Circuit description of CCM420 monitor Application NoteAN97032
Philips Semiconductors
2
Abstract
The CCM420 demo monitor is a full I2C-bus controlled 17” colour monitor. It’s extensive geometry control andexcellent video performance with a high level of integration make it a high-performance monitor at moderatecost and easy application.
© Philips Electronics N.V. 1997All rights are reserved. Reproduction in whole or in part is prohibited without the prior written consent of thecopyright owner.The information presented in this document does not form part of any quotation or contract, is believed to beaccurate and reliable and may be changed without notice. No liability will be accepted by the publisher for anyconsequence of its use. Publication thereof does not convey nor imply any license under patent- or other indus-trial or intellectual property rights.
Purchase of Philips I2C components conveysa license under the I2C patent to use the com-ponents in the I2C system, provided the systemconforms to the I2C specifications defined byPhilips.
Circuit description of CCM420 monitor Application NoteAN97032
Philips Semiconductors
3
APPLICATION NOTE
Circuit description of CCM420monitor
AN97032
Author:
Hans Verhees
Philips Semiconductors Systems Laboratory Eindhoven,The Netherlands
Keywords
Colour MonitorGeometry control
EHT supplyI2C control
17” HiRes
Date: 97-10-14
Number of pages: 50
Circuit description of CCM420 monitor Application NoteAN97032
Philips Semiconductors
4
Summary
This application note includes a brief description of the circuits of the CCM420 demo monitor excluding thevideo part (see references); complete circuit diagrams plus printed circuit board lay-out and parts list as well ashints on the pcb lay-out are given. Debugging of the main printed circuit board and alignment in a completemonitor is also included in the report. Highlights of this design are the I
2C controlled monitor deflection controller
TDA4854, I2C controlled video controller TDA4885, full-bridge vertical deflection booster TDA8354, monitor
Microcontroller P83C181* and the control software CCM420S. Combining this board with the CMTM41EHN323X145 and video board completes the CCM420 monitor.
* The Microcontroller P83C181 is pruned. It can be replaced by the P83C180. This device however has 42 pins(additional DACs are included) which requires a redesign of the pcb. See also appendix CICT IC newsletter no.17
Circuit description of CCM420 monitor Application NoteAN97032
Philips Semiconductors
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CONTENTS
1. INTRODUCTION .......................................................................................................................................... 7
1.1 CCM420 Specification ........................................................................................................................... 8 1.2 List of abbreviations............................................................................................................................... 9
2. BLOCK DIAGRAM ...................................................................................................................................... 12
3. CIRCUIT DESCRIPTIONS.......................................................................................................................... 14
3.1 Switched mode power supply .............................................................................................................. 14 3.2 Microcontroller..................................................................................................................................... 14 3.3 I2C-bus autosync deflection controller for PC/TV monitors TDA4854.................................................... 14
3.3.1 Brightness uniformity .................................................................................................................. 15 3.4 Horizontal deflection output stage ........................................................................................................ 15
3.4.1 B+ supply ................................................................................................................................... 153.4.2 Line driver and output stage........................................................................................................ 153.4.3 Linearity and S-correction control................................................................................................ 15
3.5 Vertical deflection output stage ............................................................................................................ 16 3.6 EHT supply.......................................................................................................................................... 16
3.6.1 Grid 1 supply .............................................................................................................................. 173.6.2 Grid 2 supply .............................................................................................................................. 173.6.3 Focus supply .............................................................................................................................. 17
3.7 Rotation circuit..................................................................................................................................... 17 3.8 Sound circuit........................................................................................................................................ 17
4. CIRCUIT DIAGRAMS ................................................................................................................................. 18
4.1 Last minute changes............................................................................................................................ 18
5. PARTS LIST............................................................................................................................................... 25
5.1 Resistors and potentiometers .............................................................................................................. 25 5.2 Capacitors ........................................................................................................................................... 28 5.3 Transistors .......................................................................................................................................... 29 5.4 Diodes................................................................................................................................................. 30 5.5 Integrated circuits ................................................................................................................................ 31 5.6 Wire-wound components ..................................................................................................................... 31 5.7 Miscellaneous...................................................................................................................................... 31
6. PRINTED CIRCUIT BOARD LAYOUT................................................................................................ ........ 33
6.1 Lay-out hints........................................................................................................................................ 33
7. ALIGNMENT PROCEDURE ....................................................................................................................... 38
7.1 Equipment ........................................................................................................................................... 38 7.2 Alignment ............................................................................................................................................ 38
8. DEBUGGING PROCEDURE......................................................................................................... .............. 40
9. REFERENCES............................................................................................................................................ 42
Circuit description of CCM420 monitor Application NoteAN97032
Philips Semiconductors
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1. INTRODUCTION
The CCM420 demo monitor is a full I2C bus controlled monitor. Extensive geometry control, a very wide deflec-
tion frequency range (horizontal: 15 - 84 kHz; vertical: 50 - 160 Hz), wide bandwidth video channels (maximumpixel rate 180 Mhz) with perfect grey scale tracking, a full mains range supply combined with complete softwarecontrol result in a monitor with outstanding specifications while maintaining an economic design.
The CCM420 demo monitor is meant to show the latest products of Philips Semiconductors and Philips Com-ponents. Key components are:
• monitor microcontroller P83C181
• CCM420S monitor control software
• I2C-bus autosync deflection controller for PC/TV monitors TDA4854
• I2C-bus controlled octuple eight bit DAC TDA8447
• full bridge vertical booster TDA8354
• 150 Mhz video controller with I2C-bus TDA4885
• hybrid video output stage CR6927
• low power line driver transformer CU15/35
• monitor line deflection transistor BU2532AL
• DC controlled linearity corrector PE4025/01
• EHT transformer AT2097/M1
• 0.27 mm dot triplet pitch CRT M41EHN
• Optionally available is an active convergence control circuit with the vector processor TDA4845
The monitor microcontroller P83C181 has a DDC interface, auto-sync detection and a hardware sync proces-sor. The DDC interface is DDC2AB compliant. The hardware mode detector has 12 bit resolution for the hori-zontal and vertical frequency, polarity detection and sync presence detection. The built-in sync processor alsohas a free-running mode. In this design the microcontroller runs with newly developed software CCM420S. Thissoftware allows extensive user control of geometry and colour adjustment.
The autosync deflection controller for PC/TV monitors TDA4854 is fully I2C-bus controlled and in this application
operating with a horizontal frequency range of 15 to 90 kHz (maximum 150 kHz; maximum ratio 6.5 :1). It al-lows very extensive control of geometry both horizontally and vertically, built-in B+ control part and focus sec-tion. Built-in soft-start as well as controlled shut down for B+ and deflection drive signals safeguard the outputstages at power-up and power-down, while smooth caption of horizontal frequency during mode-changes en-sures adequate protection of the line output stage. The B+ control part is used in the feed-forward mode withoutany feedback (omitting loop stability problems). The focus section has a fixed correction for the delay in the highvoltage output stage.
The vertical booster is the newly introduced TDA8354. This is a LVDMOS full bridge current driven output stagefor 3.2 Ampere peak-peak maximum and a flyback supply voltage of 68 Volt maximum.
The horizontal output stage is separated from the EHT supply to get maximum front of screen performance.The line driver uses a low-power design with the CU15/35 driver transformer and a high-speed switching lineoutput transistor BU2532AL. To obtain optimum scan performance six S-correction switches and a newly de-signed DC-controlled linearity corrector PE4025/01 are used.
The separate EHT supply section is synchronised with the horizontal deflection and uses a dedicated trans-former AT2097/M1. Incorporated in this application are a number of protections to prevent spot burn-in.
Circuit description of CCM420 monitor Application NoteAN97032
Philips Semiconductors
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The M41EHN tube is fitted with a rotation control coil. The tilt adjustment in this monitor allows an additionalcontrol of the bottom line (Tilt respectively NS trapezium).
Front of screen performance is further enhanced by means of a brightness-uniformity circuit which can beswitched on/off via I
2C.
1.1 CCM420 SpecificationGeneral
• Mains voltage 90 - 264 Volts AC
• Mains frequency 50 - 60 Hz
• Power consumption 100 W typical
• Operating ambient temperature 10 °C to 40 °C
• Weight 20 kg
• Dimensions (W x H x D) 417 x 426 x 446 mm3
Picture tube
• Type M41 EHN 323 x 145 2F01R
• Horizontal deflection impedance 130 µH (max. hor. freq. 84 kHz)
• Vertical deflection impedance 7.7 Ω
• Dot triplet pitch 0.27 mm
• Recommended active screen area 312 x 234 mm2
• Anode voltage 26.0 kV
Video
• Maximum dot rate 180 Mhz
• Video input signal 700 mVpp linear via three BNC inputs
• Video input impedance 75 Ω
• Horizontal shift range > ±12.5 mm
• Vertical shift range > ±12.5 mm
• Horizontal amplitude < 210 mm to > 340 mm
• Vertical amplitude < 160 mm to > 240 mm
• Reference white point x = 0.313; y = 0.329 (D6500)
• White point deviation ∆x < 0.01; ∆y < 0.01
• Grey scale tracking ∆x < 0.02; ∆y < 0.02
Sync signals
• Inputs Separate Horizontal/Composite and Vertical inputs via BNC
Circuit description of CCM420 monitor Application NoteAN97032
Philips Semiconductors
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• Level TTL
• Polarity Positive or negative
• Horizontal frequency 15 to 84 kHz
• Vertical frequency 50 to 160 Hz
User interface
• Control Five button keyboard plus USER/SERVICE switch
• Indication On Screen Display with 4 lines of 12 characters
1.2 List of abbreviations
A1 Auxiliary 1
A2 Auxiliary 2
A3 Auxiliary 3
A4 Auxiliary 4
AGCDIS Automatic gain control in vertical oscillator enabled/disabled
ASDC Auto-Sync Deflection Controller
BB Blue Black level
BG Blue gain
Black Lvl B Blue channel black level control register in the TDA4885
Black Lvl G Green channel black level control register in the TDA4885
Black Lvl R Red channel black level control register in the TDA4885
BLKDIS Vertical protection at ‘Clamping/blanking’ and ‘Horizontal unlock’ enabled/disabled in the TDA4854
Brightness Brightness control register in the TDA4885
CLAMP Selection of trailing/leading edge horizontal clamping pulse in the TDA4854
Contrast Contrast control register in the TDA4885
CRT Cathode Ray Tube
CT Colour temperature
DDC Display Data Channel
DISO On Screen Display enabled/disabled in the TDA4885
DISV Video signals enabled/disabled in the TDA4885
DPMS Display Power Management Signalling
EHT Extreme High Tension
ENN Fast blanking pulse for On Screen Display
EW East-West
FHMULT East-West output tracking with / independent of horizontal frequency in the TDA4854
Circuit description of CCM420 monitor Application NoteAN97032
Philips Semiconductors
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FPOL Selection of positive / negative feedback polarity in the TDA4885
G2 CRT grid 2
Gain B Blue channel gain control register in the TDA4885
Gain G Green channel gain control register in the TDA4885
Gain R Red channel gain control register in the TDA4885
GB Green Black level
GG Green gain
H Horizontal
H-corner Horizontal corner control register in the TDA4854
H-focus Horizontal focus control register in the TDA4854
H-moiré Horizontal Moiré control register in the TDA4854
H-paral Horizontal parallelogram control register in the TDA4854
H-pin Horizontal pincushion control register in the TDA4854
H-pin-bal Horizontal pin-balance control register in the TDA4854
H-pos Horizontal position control register in the TDA4854
H-Rot Horizontal Rotation or Tilt control register in the TDA8447
H-size Horizontal size register in the TDA4854
H-trap Horizontal trapezium control register in the TDA4854
HB Horizontal Pin-balance
HBC Horizontal pin-balance enable/disable
HC Horizontal Corner
HF Horizontal focus
HL Horizontal linearity
Hlin Horizontal linearity control register in the TDA8447
HP Horizontal Pincushion
HPC Horizontal pincushion enable/disable
HT Horizontal Trapezium
I2C Inter IC
LVDMOS Low Voltage Depletion Metal Oxide Semiconductor
MOD Horizontal and vertical moiré cancellation enabled/disabled in the TDA4854
NS North-South
NStrap North-South trapezium control register in the TDA8447
OC On Screen Display contrast
Oh On Screen Display Horizontal position
OSD On Screen Display
OSD Ctrst On Screen Display contrast control register in the TDA4885
Ov On Screen Display Vertical position
Circuit description of CCM420 monitor Application NoteAN97032
Philips Semiconductors
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PA Parallelogram
PEDST Pedestal blanking enabled/disabled in the TDA4885
RB Red Black level
RG Red gain
SCK Serial clock
SDI Serial data
SMPS Switched Mode Power Supply
SMPTE Society of Motion Picture and Television Engineers
SOFTST Softstart control bit in the TDA4854
STDBY Standby control bit in the TDA4854
TI Tilt
TVMOD TV mode at Fmin activated/de-activated in the TDA4854
USB Universal Serial Bus
V Vertical
V-focus Vertical focus control register in the TDA4854
V-lin Vertical linearity control register in the TDA4854
V-lin-bal Vertical linearity balance control register in the TDA4854
V-moiré Vertical Moiré control register in the TDA4854
V-pos Vertical position control register in the TDA4854
V-size Vertical size control register in the TDA4854
VB Vertical linearity balance
VBLK Selection of duration of vertical blanking pulse in the TDA4854
VESA Video Electronics Standard Association
VF Vertical focus
Vg1 Voltage on grid 1 of the CRT
Vg2 Voltage on grid 2 of the CRT
Vg2 Grid 2 voltage control register in the TDA8447
VL Vertical linearity
VLC Vertical linearity balance control enabled/disabled in the TDA4854
VOVSCN VGA vertical size control bit in the TDA4854
VPC Vertical position and Horizontal trapezium control enabled/disabled in the TDA4854
VSC Vertical linearity and Horizontal corner corrections enabled/disabled in the TDA4854
VT Vertical trapezium
Circuit description of CCM420 monitor Application NoteAN97032
Philips Semiconductors
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2. BLOCK DIAGRAM
Circuit description of CCM420 monitor Application NoteAN97032
Philips Semiconductors
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Remarks to the block diagram:
1. The Dynamic convergence circuit is optional. The Vector Processor TDA4845 is not commercially avail-able.
2. Due to time limitation and mechanical restrictions the sound part is, although present in the printed circuitboard layout, not inserted and therefor not operational.
Circuit description of CCM420 monitor Application NoteAN97032
Philips Semiconductors
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3. CIRCUIT DESCRIPTIONS
3.1 Switched mode power supplyThe SMPS is preceded by a mains harmonic reduction coil (L1: TU305b2) in order to reduce mains harmonicsdistortion. This coil is short-circuited for mains voltages below 175 VAC (T6, T7 and TH2).
An additional connector ‘USB-supply’ is present for an optional USB supply (under development; available???;see references).
In this SMPS only DPMS level 1 is realised resulting in a burst-mode operation of the SMPS. Transistor T10and T11 act as comparator to control the burst mode. In this burst mode the mains input power reduces to lessthan 2.5 W. In case the USB supply is present, the SMPS is switched-off completely while the microcontrollersupply is maintained from the USB supply part (header X3).
DPMS level 2 is realised by using the Standby-mode of the TDA4854 activated via I2C bus.
Overcurrent protection is achieved by means of resistors R32, R33, and R34 connected to pin 13 of theTDA8380. In case of continuous short circuit diodes D32 and D33 provide extra protection by increasing thedelay time before the next slow-start is initiated.
The only adjustment is the 185 Volt output by means of potentiometer P1.
The output voltages of the supply are:
185 V horizontal deflection and EHT output stages; reference voltage for Vg2.
78 V video output stages;
18 V driver stages, rotation circuit and 12 Volt stabiliser;
11 V vertical deflection output stage, 5 Volt stabiliser and heater current;
-18 V rotation circuit.
3.2 Microcontroller
The microcontroller P83C181 controls all adjustments in the complete monitor by I2C bus. The only two adjust-
ments not accessible by I2C bus are the “SMPS 185 Volt” and the “EHT 26.0 kV”. The user interface consists of
a five button keyboard and an On-Screen-Display.
Communication with the OSD controller on the video board is via a high speed interface bus (signals ENN, SDIand SCK).
In normal operation the user has only access to the first two levels of the software program. The first level beingthe video mode information displaying horizontal and vertical frequencies and mode number/identification. Thesecond level gives access to control the brightness, contrast, degaussing, horizontal and vertical moiré cancel-lation, picture position and size. Brightness and contrast control can be directly accessed by respectively menuu/d buttons and cursor u/d buttons.
In the service mode (jumper J301 closed; service switch down on the front keyboard) the higher levels for con-trol of colour (black levels, gain, etc.) and geometry (pin-cushion, pin-balance, trapezium, etc.) can be ac-cessed.
3.3 I2C-bus autosync deflection controller for PC/TV monitors TDA4854The TDA4854 is applied here in a basic configuration. This means HSMOD, VSMOD and ASCOR pins are notused (separate horizontal deflection and EHT supply; no DC shift circuit for horizontal deflection). ASCOR isinternally connected to PLL2 (bit ACD = 1).
Circuit description of CCM420 monitor Application NoteAN97032
Philips Semiconductors
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The horizontal oscillator can be synchronised in the frequency range from 15 to 85 kHz (determined by resistorsR350 and R351 and capacitor C318). The value of R350 and R351 can be determined according to the equa-tions in appendix 3.
The B+ section is fed with the EWDRV signal from pin 11 with the FHMULT bit = 0 (multiplication with the fre-quency is achieved in the output stage). The sawtooth generator uses a current source to minimise influence ofthe supply voltage. Capacitor C312 must have a low temperature coefficient (preferably NP0) to minimise tem-perature effects. Capacitor C314 must be placed as close as possible to pins 3 and 7 to minimise EMS.
The HUNLOCK signal is used as interrupt for the microcontroller in case of a mode change and insertion ofvertical blanking pulses on the CRT grid 1 voltage (12 Volt peak). Via diode D303 the sawtooth generator of theNorth-South trapezium circuit is reset.
3.3.1 Brightness uniformity
A brightness uniformity signal can be extracted from the focus signal on pin 32. The signal is buffered by T304to drive the modulation inputs of the TDA4885 video preamplifier. The brightness uniformity function can beswitched on and off by I
2C control via IC303 register 4 and T305 (Brightness uniformity OFF: register contents
set to ‘255’; Brightness uniformity ON: register contents set to ‘0’).
3.4 Horizontal deflection output stageThe horizontal deflection output stage consists of three main parts:
3.4.1 B+ supply
The signal BDRV from the TDA4854 is buffered (T400/T401) and then fed to the PMOS output transistor. DiodeD401 and resistor R403 are added for protection.
3.4.2 Line driver and output stage
The line driver stage is built around TR401. The use of the BU2532AL results in a low power driver stage(typically 1.8 W) capable of driving the line output transistor over a wide frequency range. The stage is designedto operate from 15 to 90 kHz.
The diode D405 in the collector of T403 BU2532AL ensures the high efficiency of the driver stage. Here aSchottky-barrier type is used for it’s low forward voltage drop. In fact any diode capable of handling the peakdeflection current can be used but forward voltage drop should be minimal (in order not to deteriorate linearity).Maximum reverse voltage for D405 is the forward recovery voltage of the deflection flyback diode D404.
See also application note ETV/AN97002
3.4.3 Linearity and S-correction control
Horizontal linearity is controlled with a newly designed DC-controlled linearity corrector PE4025/01. The controlcoil is current driven by T405 under I
2C control via IC303 register 7.
S-correction is performed with five switches for the frequency range of 30 to 90 kHz and one extra switch forthe TV mode.
The S-correction capacitors are switched according to the following table:
Circuit description of CCM420 monitor Application NoteAN97032
Philips Semiconductors
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Freq.range C42347 nF
C417120 nF
C418220 nF
C419470 nF
C4201.2 µF
C4215.6µF
< 30 kHz x x x x x x30 - 34 kHz - - x x x -34 - 37 kHz - - x - x -37 - 45 kHz - - - - x -45 - 53 kHz x x - x - -53 - 61 kHz x x x - - -61 - 65 kHz x - x - - -65 - 71 kHz x x - - - -71 - 78 kHz - x - - - -78 - 85 kHz x - - - - -> 85 kHz - - - - - -
3.5 Vertical deflection output stageThe vertical deflection output stage is the new full-bridge current driven booster TDA8354 which has outputstages with low saturation voltage allowing low power dissipation (depending upon power supply voltage).
The circuit around transistor pair T418 / T419 is used as interface for the active convergence control circuit(optional).
3.6 EHT supplyThe EHT supply is in fact a flyback generator with controlled supply voltage by means of a B+ down converterto enable stabilisation of the EHT output voltage. In order to prevent any kind of visible interaction with thehorizontal deflection the EHT generator is synchronised with the horizontal deflection Although the flyback ofthe EHT generator lags the flyback of the horizontal deflection with ≈ 3µs. The high-voltage transformerAT2097/M1 is specially designed for this EHT generator: primary inductance 450 µH, circuit flyback time 3.3 µs,maximum operating frequency 84 kHz. The extreme high tension output voltage is 26.0 kVolt with a maximumaverage load current of 700µA (short term peak 1.5 mA).
The flyback transistor T109 BUT11A is driven by a one-shot circuit built around IC102A. Using the well definedsawtooth of the PWM controller IC101 and it’s temperature stable reference voltage an accurate pulse is gen-erated. The pulse length is defined by two more or less fixed intervals:
1. storage time of the flyback transistor (≈ 1.2 µs)
2. flyback time of the output stage (≈ 3.4 µs)
Increasing this period with an extra wait interval for safety a total pulse length of 7 µs is required.
The reference voltage for the X-ray sensor IC102B is increased with a small part of the supply voltage to pre-vent false triggering at power-up. This is achieved by means of R116 and R117.
The EHT output voltage is adjusted with potentiometer P101.
The following protections are included:
• No horizontal deflection (horizontal flyback voltage below 500 Voltpp): EHT generator stops; automatic softstart when horizontal deflection starts again.
• Overvoltage / X-ray: EHT generator is stopped and latched in an off-mode; a restart is only possible after amains switch-off and on again.
Circuit description of CCM420 monitor Application NoteAN97032
Philips Semiconductors
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• Overcurrent: First level protection is here the beam-current level limiter reducing the contrast of the videostages. Second level is the maximum duty-cycle of the UC3843 (≈99%) that cannot be handled by the ACcoupling of the PMOS output stage (T119 will not be driven in conduction anymore); in this situation thegenerator part will continue operating but the output voltage will drop to zero. Restart is only possible aftera mains switch-off and on again.
3.6.1 Grid 1 supply
The CRT grid 1(Vg1) voltage is fixed at -62 Volt DC with vertical blanking pulses of 12 Volt pp. Protection bypulling Vg1 to -200 Volt is activated in case of absence of horizontal deflection, HUNLOCK signal continuouslyhigh, absence of ‘11Volt’ supply voltage and/or a high vertical guard signal.
3.6.2 Grid 2 supply
The CRT grid 2 (Vg2) voltage is generated using a high voltage DC amplifier. Its input is driven by a DAC outputof the TDA8447 to allow I
2C bus control.
The range is 280 to 665 Volt.
3.6.3 Focus supply
The dynamic focus voltage from the output of the TDA4854 is amplified by a high-voltage amplifier and thenconnected to the coupling capacitor in the EHT transformer.
Resistor R173 and diodes D132 and D133 prevent cross-over distortion of the output stage.
3.7 Rotation circuitThe circuit for driving the rotation coil on the CRT is extended with a sawtooth generator (IC201 B) to allowseparate control of the top and bottom horizontal line. So the adjustment sequence is to align the top line withthe tilt control (the complete picture is rotated with this adjustment) and then the bottom line can be aligned withthe NS-trapezium adjustment.
3.8 Sound circuit
The sound part is a 2 x 1 Watt output stage with DC volume control TDA7053A. In this application 25 Ω speak-ers should be used.
Note: Due to mechanical problems it was not possible to implement the sound input connectors and the speak-ers in the cabinet. Therefor the circuit is not present in the demo monitors although the lay-out is prepared for it.
Circuit description of CCM420 monitor Application NoteAN97032
Philips Semiconductors
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4. CIRCUIT DIAGRAMSOn the next pages the following circuit diagrams are presented:
− Switched mode power supply;
− Microcontroller plus deflection controller part;
− Horizontal and vertical deflection output stages;
− CRT grid supply circuits: Vg1, Vg2, focus and dynamic focus amplifier, EHT supply;
− Rotation and sound.
4.1 Last minute changesWhen debugging the final monitor a few small changes were necessary to obtain maximum performance.
Componentnumber
Old value New value Reason
C8 470 µF / 25 V 220 µF / 25V Decrease start-up time SMPSC12 3.9 pF / NP0 18 pF / NP0 Current sense SMPSC414 (not present) 4.7 µF / 200 V Horizontal ringing damper
D19 BZX79C15 BZX79C18 Increase output power during “OFF”mode
D90 (not present) BZX79C15 Protection of T12 during mains switchingD91 (not present) BZX79C15 Protection of T12 during mains switchingD408 (not present) BYD73D Horizontal ringing damperR50 270 Ω / PR03 270 Ω / AC04 PCB may overheatR62 120 kΩ / SFR25 180 kΩ / SFR25 Increase output power during “OFF”
modeR344 56 kΩ / SMD 0805 33 kΩ / SMD 0805 Pin-cushion rangeR353 8.2 kΩ / SMD 0805 3.3 kΩ / SMD 0805 JitterR390 (not present) 3.3 kΩ / SFR25 See text and drawing belowR391 (not present) 3.3 kΩ / SFR25 See text and drawing belowR416 (not present) 2.2 kΩ / PR02 Horizontal ringing damperR432 2.7 kΩ / PR02 2.2 kΩ / PR02 Horizontal ringingR441 2.7 kΩ / PR01 2.2 kΩ / PR01 Vertical flyback
Zenerdiodes D90 and D91 have to be connected back-to-back (i.e. cathodestied together) and the two anodes must be connected to Gate respectivelySource of T12. In the circuit diagram on the right one can see how it looks.
The two zenerdiodes D90 and D91 are placed on the copperside of the board. T12
D91
D90
Circuit description of CCM420 monitor Application NoteAN97032
Philips Semiconductors
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An additional damper for the horizontal deflection cannot be combinedwith the largest S-correction capacitor. Therefor an additional damperis necessary as drawn in the circuit diagram on the left hand side.
The outputs P0.5 pin 16 and P0.7 pin 14 of IC304respectively signal “DEGS” and “DPMS” should beequipped with a pull-up resistor of 3k3 to +5 Volt.These resistors are not present in the lay-out. Bestlocation to add these resistors is near R5 and R6according to the drawing on the right:
The transistors BC375b and BC376 will be pruned. Best replacements for these types are BC337 respectivelyBC327. No further modifications are necessary.
Transistor T124 is not correctly placed in the printed circuit board design : collector and emitter connections areinterchanged on the board. The circuit diagram and parts list however are correct.
C124 and C403 are replaced with 27 nF / 250 Volt due to temporary unavailability of 22 nF / 250 Volt.
The following component on the video board has to be changed:
Video board:Componentnumber
Old value New value Reason
R29 1.0 Ω / SFR16 3.3 Ω / SFR16 Heater tensionPCB track Cut track to pin 3 of
connector 1+5 Volt of Video must be disconnectedof + 5 Volt of main board.
630VDC180nC416
200V4u7C414
PR022k2R416
BYD73D
D408
R315
R313R31 R314
C305
C304 R434
R420
SW1
X303
R439
X1
T415XT301
R4
TH1
R6
T1R5
Add this resistor:
Add this resistor:
SFR25; 3.3 kOhm
SFR25; 3.3 kOhm
Circuit description of CCM420 monitor Application NoteAN97032
Philips Semiconductors
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X1C2
275V~
220n
L1 TU305B2
R6470E
T1
BC548
R539k R4
96126
D2
R3
AC04
2E7
C1
275V~
220n
F1 SLOW
2A
R1 1M
TR1
AT4043/20
C4
250V~2n2
C3
250V~2n2
C5
275V~
220n
C6 2n2
C7 2n2
9 7
3 2TH2
MOC2A60_5
R2
PR01
270E
D31
BYD33K
D5BYD13J
SW1
R9NFR25H
10E T2
BSP145
R10
10E
R8 1k5
R7150k
T3BC547
R12
1k
D8BZX79
C33
IC1
TDA8380A
R11 AC05
10E D6
BT151-500R
R13 1M
R76
4E7
NFR25
R15
220k
R14
110k
C9
400V
220u
R24
1k
C17 2n2
R17
100k
R16
18k
R18
5k1
R20
56E
R22
NFR25
22E
D9
BYD33D
C825V 470u
R28
47k
C39
500V2n7
R32
NFR25
15k
C10
680p
C11 63V
4u7
C12
3p9
R78
PR01100k
L7 10u
D21
BZX79
C6V2
T5W9NA80 R30
1k
R31
AC04390E
C18
1kV 470pD10
BYD33M
R33
NFR25H
0E33
R34
NFR25H
0E47
T14
BC548
R46
1k2
C14
2n2
C15
22n
R47
4k7
OC1
CNX82A
C19
10nR48
1k
R51
2k2
C27 25V
470u
R49 VR
374M7 C21
250V~
4n7
C20
500V
220p
R25
PR02
220E
D26
BYR29-800
D25 BYD33G
D24
BYD73D
D23
BYV28/100
D22
BYD73D
L2 10u
R50
PR03
270E C38
680p
TR2
C22 250V
150u
C28
16V
1000u
L3 10u
L4 10u
C23
100V
47u
C24
25V
470u
L5 10u
C25
16V
1000u
L6 10u
C26
25V
470u
C29
25V
470u
D33
1N4148
F3 2AF
D20
BZX79
C6V2
D19
BZX79
C15
T13
BC548
C36
100p
R53
150k
R54
5k1
C35 4n7
P1 1k
T9BC548
R52
100E
T10 BC
558
R57
18k
T11
BC558
R56
100k
R62
120k
R61
24k
D30
1N4148
R59
100k
R58
39k
D18
1N4148 R6
4180k
D13
BZX79C5V6
T12
BSN274
R63 NFR25H
180E
R55
100EC34 16V
1000u
F4 2AF
IC2
7812
R67
NFR25
10E
R45
10k
T8BC548
R44
330E
R43
1k2
D15
1N4148
D16
1N4148
D17
BI-COLORLED
R36
100E
T6 BC548
R37
1k
T7
BC548
R39
820E
R40
22k
R38
36k
R41
680E
C13
50V
10u
R42
15E
D14
1N4148
R35
5k1
D1
4xBYW54
D3
D4
D7BZX79
C6V2
C30
16V
68u
F2 2AF
D32
1N4148
C31
330nIC
378L05
C32
16V
68u
X3 3p-HEADER
D28
1N4148
R68
1kD29
1N4148
9 7
3 2
TH1
MOC2A60_5
R65
NFR25
10E
R74
1k
R66
NFR25
10E
T17
BC548
R75
47k
DEGS
185V
185V
12V
12V
5V_USB
-18V
5V
5V
5V
5V5V
11V
11V
18V
VO
VO
78V
DPMS1
DPMS1
3
2
1
1
USB-supply
GRR
78
90-260V~
Line Power
10 16 14 18 17 11 12 13 1593456
16
15
14
13
12
11
10
98
7
6
5
4
3
2
1
Circuit description of CCM420 monitor Application NoteAN97032
Philips Semiconductors
21
IC302
PCE8582IC303 TDA8447
IC304
P83C
181
P1.7
SCL0
SDA0
SCL1
SDA1
INT1not
P3.3
ADC0 Vdd
Vss
resetOUT
P0.0
P0.1
P0.2
P0.3
P0.4
P0.5
P0.6
P0.7
VsyncOUT
VsyncIN
P1.6
HsyncOUT
HsyncIN
XTAL2
XTAL1
P2.0
P2.1
P2.2
P2.3
P2.4P2
.5
XT301
12MHz
R313
100E
C305
100p
IC305
TDA4
854
HUNLOCK
SCL
SDA
ASCOR
n.c.
VAGC
VREF
VCAP
Sgnd
HPLL1
HBUF
HREF
HCAP
HPLL2
i.c.
FOCOS
CLBL
HSYNC
VSYNC
VOUT1
VOUT2
EWDRV
Vcc
Dgnd
HDRV
PGND
BDRV
BIN
BSENSE
BOP
XRAYHFLB
R315
100E
R305
100E
R314
100E
R316
100E
R317
100E
R331
100E
R332
100E
R326
4k7
R325
4k7
R318
100E
R327
22k
C301 16V
68u
R304
100E
R362
2k2
R302
10E
R357
4k7
INTN(USB)
T304
BC548
HFLB
R319
100E
VRotS
R329
4k7
C309
100p
R330
4k7
5V
C308
100p
SCL
J302
open=VGAselftestSDA
SCL_DDC
SDA_DDC
Keyb
C307
16V
4u7
R324
100E
R323
100E
R322
100E
R321
100E
R320
100E
SC0
SC1
SC2
SC3
SC4
D303
1N4148
ENN
SDI
SCK
16kHz
DEGS
DPMS1
C304
100p
J301
closed=service_mode
HSync
R346
100E
Vg2D
VSync
C315
100p
R345
100E
R342
100E
R341
100E
R344
56k
R334
4E7
R340
10k
BDRV
C316 100p
VDEF1
HDRV
R343
100E
FCSD
R350
1%5k23
R351
1%732E
C317
12n
C318
10n
C321
100nC324
100n
R355
100E
R354
100E
R352
22k
C319
100n
C320
100n
CLMP
R333
1k
R339 27k
R353
3k3
C322
3n3
R366
100E
T301
BC558
R336 8k2
X301
7 141312111098654321
CRT_supply
R337
2k2
C312
2n2
R347
10k
R338
1k5
X307
4 3 2 1
C314 10n
R348
10k
C310
10p
12V
SDA
SCL
VBLNK
D301
C5V6
BZX79
C311
16V
68u
VDEF2
R306
10E
C303
16V
68u
R307
100E
R308
100E
5V
C306 2n7
R356
12k
12V
R361
6k8
X303
87654321
CRT_digital
BCL
SModeN
X305
654321
USB
X302
4321
DDC
X306
121110987654321
PeCoMa
78V
11V
CLMP
HBLNK
11V
Vg1
R349
270E
INTN
R301
10E
185V
R309 PR
0315E
SCL
R359 NF
R25
220E
SDA
VSaw
HBLNK
18V
-18V
SCL_DDC
5V
SDA_DDC
X304
4321
Keyboard
R358
6k8
5V_USB
5VR310
100E
SDA
5V
C302 16V
68u
SCL
ENN
SDI
SCK
HUNLOCK
SCL
T303
BC548
HSync
SDA
R328
4E7
R360
27k
R312
22k
5V
SModeN
-18V
HROT
NSTR
HLIN
Keyb
T302
BC548
VSync
HBLNK
12V
IC301
C2E C2EPCE8582
12V
C323
10n
R363
10k
FCSD T3
05BC548
R364
4k7
R365
4k7
UNIFORMITYBRIGHTNESS
(n.c.)
(n.c.)
(n.c.)
(n.c.)
(n.c.)
(n.c.)
5V_DDC(n.c.)
Circuit description of CCM420 monitor Application NoteAN97032
Philips Semiconductors
22
D405
1N5822
R421
3k9
R405
47E
C400
250V
33n
C412
250V
4n7
R432
PR02
2k7
IC401
TDA8354
X401
STOCKO7
R442
NFR25
0E47
C417 250V
120n
C419 250V
470n
C418 25
0V220n
C406
2kV
4n7
D404
459FBY
T410 10
0BBUK445
T408
100B
BUK445
R414
PRO3
270E
R419
47k
R418
150k
R427
47k
R426
150k
R423
150k
R424
47k
D409
C6V8
BZX79
T412
100B
BUK445
C427 10n
R441
PR01
2k7
D403
BYV99
R444
2k0
C403 250V
22n
C402
250V
150u
R400
100E
D402
C10
BZX79
R404
10k
R403
120E
C401
25V
47u
T400
BC375
T401
BC376
R439
10k
R429
150k
R430
47k
C420 250V
1u2
T403
BU2532AL
C407
150n
R406
2E7
TR401
CU15/35
R408
33E
R420
1k
R407
220E
T404
BC375b
C408 470n
D406
1N4148
D407
1N4148
R411
18k
C410 63
V10u
R410
100E
R409
680E
R443
3k3
R445
1E8
R446
1E8
R450
10k
R451
10k
R449
270k
R453
100E
R452
100E
C426 10n
C428 10n
T406 100B
BUK445
C429 2n7
R447
330E
T417
BC548
L403
10uH
R431
10k
T411
BC548
T413
BC548
T409
BC548
R422
10k
T415
BC548
R425
10k
T407
BC548
R433
47k
C430
1n
X402
D410
C39
BZX79
C424
50V47u
R440 5k6
C425
16V330u
L402
T419 BC
558
R455
3k9
T418
BC558
R456
3k9
R454
330k
C409
10n
R434
10k
T414 100B
BUK445
C421
160V
5u6
C416 630VDC
180n
C422 16V
68u
R435
NFR25
22E
R436
22E
R457
4k7
C431 25V
47u
T402
IRF9630
C423 400V
47n
R437
47k
R438
150k
R428
10k
T416 100B
BUK445
L401
C404
100V2n7
C405
1kV47p
D401
1N4148
R413
10E
R458
PR01
220E R4
15
PR01
27E
T405
BC548C
C411
250V
4n7
R412
47E
+HDEFL
-HDFEL
71
PE40
15/0
1
18V
12V
12V
Vguard
VM
Vcon
VpB
VoB(-)
gndB
Vflb
gndA
VoA(+)
VpA
Ii-
Ii+
Icomp
VertDeflCoil
Vguard
185V
VDEF
2
VDEF
1
VSaw
78V
11V
185V
18V
16kH
zSC0
18V
5V
11V
BDRV
HDRV
HFLB
HLIN
SC4
SC3
SC2
SC1
432 1
U20 core
1.2mH
Circuit description of CCM420 monitor Application NoteAN97032
Philips Semiconductors
23
C112
500V
2n7
D135 BYD33D
R136
150k
D113
R162
150k
R138
1M5
R139
36k
T113
MPSA44
T120
BC548
T123
BC548
R153
NFR25H
100E
R175
2k2
D121
C119
R137
1M8
R166 3k3
R168 1k
T121
BC548
C108
100n
R167
10k
C129
100V22n
D127
1N4148
D128 1N
4148
D129 1N
4148
T122
MPSA92
R171 1M
R172
120k
R151
C136
27p
C123
D120
C105
100p
T124
BC548
R124
R131
R118
R105
100E
D130
C62
BZX79
T112
MPSA42
D114
1N4148
R135
24k
R176
39k
C118
63V
R132
T111
R122
D108
D109
R129
R130
R123
R116
R128
R178 47k
R117
R133
R156
R126
D112
IC102/B
R119
D106
R109
R110
C106
R108
D133
1N4148
T106
C110
TR101
C102
470p
L102
R155
D124
T119
C124
C126
R115
NFR25H
D125
R157
R158
C125
T107
T108
R159
D122
IC102/A
R170
47k
C120
P101
C121
R154
R127
R150
100k
C116
100n
C104
C109
D132
1N4148
R114
NFR25H
R112
C107
R145
8k2
T103
D118
6V2
D131 BAS32
R142
270k
D105
R141
270k
L101
D117
BYD33M
T109
C111
R173
1kR143
1M5
D111
T115
MPSA44
R152
1k
C122
D110
T114
MPSA44
D123
R146
220kR1
47
220k
R144 1M5
C117 1kV
1n
R140 1k
R107
C103
D116 BYD33M
R163
150k
T117
MPSA44
R148 1k
T118
MPSA44
R149
3k3
R125
D107
R113
D126
T110
R177 11k
R161
10K
C127
IC101
DIL8p
UC3843p
C128
R165
R164
NFR25H
R169
1k D134
C4V7
BZX79 C1
30
250V220n
C13415p
X101
R179 15k
C135
47p
16KHZ
HUnlock
12V
VG1
VBLNK
-200V
Vguard
11V
12V
132
456
87
***
** * *
AT20
97/M
1
27E
6E8
4E7
10E
3E3
820E
270E
120E
100E
100E
BC375b
4k3
51k
BYD73D
BYD73D
BYD33M
HBLNK
13k
10u
22k
47k
Vg2D
4n7
56
BCL
BYD73G
63V
1u
BZX79C
1u
PR01
1N4148
1N4148
2k2
56k
2M7
3M3
3M3
FCSD
12V
12V
Vg2
185V
LM393
1n
680k
10k
LM393
5k6
NFR25
10u
16V
100u
120k
63V
4u7
PR01
6u8
1k1k
560k
3n3
1N4148
16V
16V
16V
68u
68u
68u
EHT
GC
1N4148
BC376
BC375
12V
1n5
1N4148
1N4148
1N4148
1k
C10
3k3
330p
C75
12V
250V
-200V
BZX79
2 1
DF
GF1n1n
GR
4k7
3n0
600M
PH2369
2n2
PH236968k
1kV
BC375b
10V
1kV
26E
BYV
11A
100u
BZD23C5V1
BUT
BYV27-200
3k3
185V
22n
33n
1k
10u
120E
250V
10k
250V
IRF9630
BZX79
Circuit description of CCM420 monitor Application NoteAN97032
Philips Semiconductors
24
C204
220n
R222
4k7
R207
56k
R203
1k8
IC201/A
LM358a
R209
100k
T203
BC548
R227
100k
R214
680E
IC201/B
LM358b
R211
43k
T204
BC558
C207
25V
47u
C208
25V
47u
C210
25V
47u
X202
R218
3E3
R220
22E
C209
25V
47u
X201
R215
NFR25H
100E
C212
100n
C217
16V
68u
R212
33k
R219
1k
R217
NFR25H
100E
C211
470n
X203
X204
R204
56k
R228
4E7
C213
16V
68u
C214
470n
R224
4k7
R223
4k7
R221
4k7
C216
100n
C215
470n
P201
10k
R216
680E
R205
180k
C203
100n
R213
100E
R208
22k
R206
39k
T202
BC558
X205
6284
+11V
VRotS
4
8
NSTR
HROT
-18V
+18V
Rs = 125 ohm
L = 65 mH
(right)
(left)
+/- to -/+ 20 mA SAW
I = +/-50 mA DC
OUTPUT
SPEAKER
OUTPUT
SPEAKER
INPUT
SOUND
Rotation coil
123
CONTROL
VOLUME
2 31
1313
5
16 13 12 9
107
14
321
123
756
IC202
TDA7053A
RL
-+-+
R-out
L-out
R-in
Vol-R
L-in
Vol-L
Circuit description of CCM420 monitor Application NoteAN97032
Philips Semiconductors
25
5. PARTS LISTThe parts list is only for the main board. No parts are listed to complete the CCM420 monitor.
5.1 Resistors and potentiometers
Note : Were no type is mentioned a SFR25 is used.
Number Value TypeR1 1MR2 270E PR01R3 2E7 AC04R4 2322 622 96126 PTCR5 39kR6 470ER7 150kR8 1k5R9 10E NFR25R10 10ER11 10E AC05R12 1kR13 1MR14 110kR15 220kR16 18kR17 100kR18 5k1R20 56ER22 22E NFR25R24 1kR25 220E PR02R28 47kR30 1kR31 390E AC04R32 15k NFR25R33 0E33 NFR25R34 0E47 NFR25R35 5k1R36 100ER37 1kR38 36kR39 820ER40 22kR41 680ER42 15ER43 1k2R44 330ER45 10kR46 1k2R47 4k7R48 1kR49 4M7 VR37R50 270E PR03
Number Value TypeR51 2k2R52 100ER53 150kR54 5k1R55 100ER56 100kR57 18kR58 39kR59 100kR61 24kR62 120kR63 180E NFR25R64 180kR65 10E NFR25R66 10E NFR25R67 10E NFR25R68 1kR74 1kR75 47kR76 4E7 NFR25R78 100k PR01R105 100ER107 3k3R108 820ER109 68kR110 560kR112 120k SMD 0805R113 100ER114 10E NFR25R115 6E8 NFR25R116 10kR117 680k SMD 0805R118 4k3R119 51k SMD 0805R122 5k6R123 56kR124 2k2R125 3k3R126 1kR127 1kR128 27 E PR01R129 3M3R130 3M3R131 2M7
Circuit description of CCM420 monitor Application NoteAN97032
Philips Semiconductors
26
Number Value TypeR132 1kR133 270ER135 24kR136 150kR137 1M8R138 1M5R139 36kR140 1kR141 270kR142 270kR143 1M5R144 1M5R145 8k2R146 220kR147 220kR148 1kR149 3k3R150 100kR151 13kR152 1k Allen BradleyR153 100E NFR25R154 47kR155 120E PR01R156 3E3 NFR25R157 10kR158 120ER159 1kR161 10kR162 150kR163 150kR164 4E7 NFR25R165 100ER166 3k3R167 10kR168 1kR169 1kR170 47kR171 1MR172 120kR173 1kR175 2k2R176 39kR177 11kR178 47kR179 15kR203 1k8R204 56kR205 180kR206 39kR207 56kR208 22k
Number Value TypeR209 100kR211 43kR212 33kR213 100ER214 680ER215 100E NFR25R216 680ER217 100E NFR25R218 3E3R219 1kR220 22ER221 4k7R222 4k7R223 4k7R224 4k7R227 100kR228 4E7R301 10ER302 10ER304 100ER305 100ER306 10ER307 100ER308 100ER309 15E PR03R310 100ER312 22kR313 100ER314 100ER315 100ER316 100ER317 100ER318 100ER319 100ER320 100ER321 100ER322 100ER323 100ER324 100ER325 4k7R326 4k7R327 22kR328 4E7R329 4k7R330 4k7R331 100ER332 100ER333 1kR334 4E7R336 8k2R337 2k2
Circuit description of CCM420 monitor Application NoteAN97032
Philips Semiconductors
27
Number Value TypeR338 1k5R339 27k SMD 0805R340 10k SMD 0805R341 100ER342 100ER343 100ER344 56k SMD 0805R345 100ER346 100ER347 10kR348 10kR349 270ER350 5k23/1% SMD 0805R351 732E/1% SMD 0805R352 22kR353 8k2 SMD 0805R354 100ER355 100ER356 12kR357 4k7R358 6k8R359 220E NFR25R360 27kR361 6k8R362 2k2R363 10kR364 4k7R365 4k7R366 100ER400 100ER403 120ER404 10kR405 47ER406 2E7R407 220ER408 33ER409 680ER410 100ER411 18kR412 47ER413 10ER414 270E PR03R415 27E PR01R418 150kR419 47kR420 1kR421 3k9R422 10kR423 150kR424 47kR425 10k
Number Value TypeR426 150kR427 47kR428 10kR429 150kR430 47kR431 10kR432 2k7 PR02R433 47kR434 10kR435 22 NFR25R436 22ER437 47kR438 150kR439 10kR440 5k6R441 2k7 PR01R442 0E47 NFR25R443 3k3R444 2k0R445 1E8R446 1ER447 330ER449 270kR450 10kR451 10kR452 100ER453 100ER454 330kR455 3k9R456 3k9R457 4k7R458 220E PR01
Potentiometers
Number Value TypeP1 1k EMP10P101 22k EMP10
Circuit description of CCM420 monitor Application NoteAN97032
Philips Semiconductors
28
5.2 Capacitors
Electrolytic capacitorsNumber Value TypeC8 470µ/25V 037C9 220µ/400V 057C11 4µ7/63V 037C13 10µ/50V 037C22 150µ/250V 057C23 47µ/100V 037C24 470µ/25V 037C25 1000µ/16V 037C26 470µ/25V 037C27 470µ/25V 037C28 1000µ/16V 037C29 470µ/25V 037C30 68µ/16V 037C32 68µ/16V 037C34 1000µ/16V 037C107 47µ/63V 037C109 100µ/25V 037C110 68µ/16V 037C111 100µ/10V 037C118 10µ/63V 037C119 1µ/250V 044
Number Value TypeC126 10µ/250V 044C127 68µ/16V 037C128 68µ/16V 037C207 47µ/25V 037C208 47µ/25V 037C209 47µ/25V 037C210 47µ/25V 037C213 68µ/16V 037C217 68µ/16V 037C301 68µ/16V 037C302 68µ/16V 037C303 68µ/16V 037C307 47µ/63V 037C311 68µ/16V 037C401 47µ/25V 037C402 150µ/250V 057C410 10µ/63V 037C422 68µ/16V 037C424 47µ/50V 037C425 330µ/16V 037C431 47µ/25V 037
Film and ceramic capacitorsNumber Value TypeC1 220n/275V~ 336-1C2 220n/275V~ 336-1C3 2n2/250V~ 336-1C4 2n2/250V~ 336-1C5 220n/275V~ 336-1C6 2n2/250V~ 336-1C7 2n2/250V~ 336-1C10 680p 730C12 10p/100V 638C14 2n2/100V 630C15 22n/100V 370C17 2n2/500V 655C18 470p/2kV MurataC19 10n/250V 370C20 220p/500V 655C21 4n7/250V~ 336-6C31 330n 370C35 4n7 630C36 100p/100V NP0C38 680p/500V 655C39 2n7/500V 655
Number Value TypeC102 470p/100V 630C103 330p 630C104 2n2 730C105 100p/100V NP0C106 3n3 630C108 100n SMD 0805/X7RC112 2n7/500V 655C116 100n/63V 370C117 1n/1kV MurataC120 4n7/1kV MurataC121 1u/63V 370C122 1n/1kV MurataC123 1n5 630C124 22n/250V 365C125 33n/250V 365C129 22n/100V 370C130 220n/250V 373C134 15p SMD 0805/NP0C135 47p NP0C136 27p SMD 0805/NP0C203 100n/63V 370
Circuit description of CCM420 monitor Application NoteAN97032
Philips Semiconductors
29
Number Type RemarksC204 220n/63V 370C211 470n/63V 370C212 100n/63V 370C214 470n/63V 370C215 470n/63V 370C216 100n/63V 370C304 100p/100V NP0C306 2n7/500V 655C308 100p/100V NP0C309 100p/100V NP0C310 10p/100V 638C312 2n2 730C314 10n/250V 370C315 100p/100V NP0C316 100p/100V NP0C317 12n SMD 0805/X7RC318 10n SMD 1210/NP0C319 100n/63V 370C320 100n/63V 370C321 100n SMD 0805/X7RC322 3n3 SMD 0805/X7RC324 100n/63V 370
Number Type RemarksC400 33n/250V 365C403 22n/250V 365C404 2n7/100V 630C405 47p/1kV 694C406 4n7/2kV 376C407 150n/63V 370C408 470n/63V 370C409 10n/250V 370C411 4n7/250V 370C412 4n7/250V 370C416 180n/630VDC 378C417 120n/250V 379C418 220n/250V 379C419 470n/250V 379C420 1µ2/250V 379C421 5µ6/160V 379C423 47n/400V 379C426 10n/250V 370C427 10n/250V 370C428 10n/250V 370C429 2n7/500V 655C430 1n/500V 655
5.3 Transistors
Number Type RemarksT1 BC548cT2 BSP145 SMDT3 BC547T5 W9NA80 (to heatsink)T6 BC548cT7 BC548cT8 BC548cT9 BC548cT10 BC558T11 BC558T12 BSN274T13 BC548cT14 BC548cT17 BC548cT103 PH2369T106 PH2369T107 BC375bT108 BC376T109 BUT11A (to heatsink)T110 BC375bT111 BC375bT112 MPSA42T113 MPSA44
Number Type RemarksT114 MPSA44T115 MPSA44T117 MPSA44T118 MPSA44T119 IRF9630 (to heatsink)T120 BC548cT121 BC548cT122 MPSA92T123 BC548cT124 BC548cT202 BC558T203 BC548cT204 BC558T301 BC558T302 BC548cT303 BC548cT304 BC548cT305 BC548cT400 BC375bT401 BC376T402 IRF9630 (to heatsink)T403 BU2532AL (to heatsink)T404 BC375b
Circuit description of CCM420 monitor Application NoteAN97032
Philips Semiconductors
30
Number Type RemarksT405 BC548cT406 BUK445-100BT407 BC548cT408 BUK445-100BT409 BC548cT410 BUK445-100BT411 BC548cT412 BUK445-100B
Number Type RemarksT413 BC548cT414 BUK445-100BT415 BC548cT416 BUK445-100BT417 BC548cT418 BC558T419 BC558
5.4 Diodes
Number Type RemarksD1 BYW54D2 BYW54D3 BYW54D4 BYW54D5 BYD13JD6 BT151-500R ThyristorD7 BZX79C6V2D8 BZX79C33D9 BYD33DD10 BYD33MD13 BZX79C5V6D14 1N4148D15 1N4148D16 1N4148D17 BICOLOUR-
LEDD18 1N4148D19 BZX79C15D20 BZX79C6V2D21 BZX79C6V2D22 BYD73DD23 BYV28/100D24 BYD73DD25 BYD33GD26 BYR29-800D28 1N4148D29 1N4148D30 1N4148D31 BYD33KD32 1N4148D33 1N4148D105 1N4148D106 1N4148D107 1N4148D108 1N4148D109 1N4148D110 BZD23C5V1D111 BYD73D
Number Type RemarksD112 BYD73DD113 BZX79C75D114 1N4148D116 BYD33MD117 BYD33MD118 BZX79C6V2D120 1N4148D121 BYD73GD122 BYD33MD123 BYV26ED124 BYV27-200D125 BZX79C10D126 1N4148D127 1N4148D128 1N4148D129 1N4148D130 BZX79C62D131 BAS32 SMDD132 1N4148D133 1N4148D134 BZX79C4V7D135 BYD33DD301 BZX79C5V6D303 1N4148D401 1N4148D402 BZX79C10D403 BYV99D404 BY459F (to heatsink)D405 1N5822D406 1N4148D407 1N4148D409 BZX79C6V8D410 BZX79C39
Circuit description of CCM420 monitor Application NoteAN97032
Philips Semiconductors
31
5.5 Integrated circuits
Number Type RemarksIC1 TDA8380AIC2 L7812 (to heatsink)IC3 78L05IC101 UC3843PIC102 LM393IC201 LM358IC202 TDA7053AIC301 PCE8582C-2EIC302 PCE8582C-2EIC303 TDA8447IC304 P83C181 see appendix 7IC305 TDA4854IC401 TDA8354 (to heatsink)
5.6 Wire-wound components
Number Type/Value RemarksL1 TU305b2 3121 218 61281L2 10µ TDKL3 10µ TDKL4 10µ TDKL5 10µ TDKL6 10µ TDKL7 10µ TDKL101 6µ8 TDKL102 10µ TDKL401 CU20 / 1.2mH 8228 001 25771L402 PE4025/01 8228 001 28021L403 10µ TDKTR1 CU20d 3112 338 32032TR2 CE425V 8228 001 23415TR101 AT2097/M1 3122 268 31292TR401 CU15/35 3128 138 35141
5.7 Miscellaneous
Optical devicesNumber Type RemarksOC1 CNX82ATH1 M0C2A60_5TH2 M0C2A60_5OthersF1 2A SLOWF2 2A FASTF3 2A FASTF4 2A FASTSW1 MAINS-
SWITCH
Circuit description of CCM420 monitor Application NoteAN97032
Philips Semiconductors
32
XT301 Crystal 12MHzConnectorsNumber Type RemarksJ3 HEADER 3pJ301 HEADER 2pJ302 HEADER 2pX1 STOCKO 3p remove middle pinX2 STOCKO 4pX201 STOCKO 3pX202 STOCKO 3pX203 STOCKO 3pX204 STOCKO 3pX205 STOCKO 3pX301 STOCKO 14pX302 STOCKO 4pX303 STOCKO 8pX304 STOCKO 4pX305 STOCKO 6pX306 STOCKO 12pX307 STOCKO 4pX401 STOCKO 7p remove middle pinX402 STOCKO 3p remove middle pin
Heatsinks:The areas of the heatsinks are:• horizontal deflection: 140 cm
2 ; Rth ≈ 4 K/W.
• vertical deflection: extruded heatsink with ≈60 cm2 ; Rth ≈ 3 K/W.
• EHT: 50 cm2 ; Rth ≈ 9 K/W.
• SMPS: 60 cm2 ; Rth ≈ 8 K/W.
Mounting studs for heatsinks:The heatsinks for horizontal deflection, EHT and SMPS are mounted on the PCB via special mounting studs.For each heatsink one of these studs is connected to the ground plane of the circuit to ensure the heatsink iscorrectly grounded. The heatsink for the vertical deflection is mounted with screws. Again one of these screwsis connected to ground to define the heatsink’s potential.
Clips for device mounting on heatsinks.
Note : the mains voltage is interrupted on the board between filter output and mains switch. This connectionmust be made by two wires soldered between the appropriate points on the board. The reason for not imple-menting this connection in the board lay-out is that it requires too much space.
Circuit description of CCM420 monitor Application NoteAN97032
Philips Semiconductors
33
6. PRINTED CIRCUIT BOARD LAYOUTOn the next pages the following drawings can be found:
− component placement with position numbers as seen from the component side;
− component placement with values as seen from the component side;
− SMD placement with position numbers as seen from the solder side;
− copper pattern of printed circuit board.
The board dimensions are: 388 mm long by 250 mm wide.
6.1 Lay-out hintsGround track:
The common ground track should be kept as clean as possible. This means that only DC currents shouldbe flowing through this track indicating that the AC current is short circuited at it’s source! Therefor youwill find resistor capacitor supply filters at every stage.
Focus:
The focus signal of the TDA4854 and it’s reference ground should be kept close to each other up to theinput of the focus output amplifier due to the high gain of this output stage (and the neighbourhood of theEHT circuit as well as the long distance between source and amplifier).
Vertical deflection:
Keep vertical drive signals of the TDA4854 close together at all places to avoid coupling of magneticfields in the loop.
Horizontal deflection output stage:
Keep flyback capacitor and diode of the horizontal deflection stage located close together to damp theforward recovery ringing of the flyback diode.
Due to the low leakage inductance of the driver transformer the tracks between transformer and line out-put transistor should be kept as short as possible.
EHT X-ray protection:
The connecting points of R129/R130 and R130/R131 are very sensitive due to their high impedance.These points should therefor be kept as small as possible and far away from points with a high voltageswing (i.e. the collector voltage of the BUT11A).
Circuit description of CCM420 monitor Application NoteAN97032
Philips Semiconductors
34
R51
R53
R54
C35
T13
D20
D8
R5
T1
R6
R10
+ C8
R47 C15
C2
TH1
C1
C5
D6
R12
R13
R14
R8
R7
R15
T3
D7
R9
+
C110
R11
+ C9
C17
C3
L5
L7
C21
D5
R25
R48-
+
C22
R24
C6C7
R31
OC1
IC30
5
+
C26
+ C25
X402
D31
C4
D3
IC1
+ C29
F3
C19
R76
TH2
D24
R22
T14
D1D2
L6
D4
D403
C10
R216
C14
C38
C20
C12
TR1
R46
+
C209
+C24
R17 R16
R18
R28
R179
R34
R33
R32
R30
F1
L403
D22
D107
D26
R4
+ C23
D25
+
C431
R400
C406
R109
C121
R108
D23
C104
R49
XT30
1
D125 L101
+
C107
R114+
C109
R116
T414 R433
C103C105
C106
R132
C112
R426
R423
R429
R430
R424
R419
R427
R418
R438
T406
T408D407
+C410
C408
C409
D406
T404
R410
R409
R411
R407
R414
R406
D405
D128
C403
D404
R405
T401 T4
00
R107
R403
R435
R432
T410
D402
R365
T403
R364
T305
T402
T412
X2
C323
TR40
1L4
02
R363
C324
R135
R362
C417
C418
T304
+
C111
D120
R138
R136
T113
D113D1
0
+
C119
R1
R163
R162
R137
D121
D110
R139
D129
D114
R128
D116
R404
R126
D122
T108
R151
D118
T109
T118
T117
C116
R408
R129
D123
R155
+
C126
T107
D126
R157
R156
C18
R161
R146
R177
R140
T119
+
C11
R158
C400
R141
R150
C123
C124
D124
R143
R145
R149
R436
+ C118
T103
R175
T123
R153
T110
D117
C122
D106
T120
R176
- +C4
02
L102
T111
R144
R131
R127
R147
R133
T115
R130
R154
R173
C125
D135
R142
C117
D108
TR10
1
D111
R148 T114
D132
R110
+
C27
D130
X205
R169
T415
D134
T122
C129
T411
T409
T413
T407
D109
R78
T121
R171
D127
R166
R168R167
R172
R170
C130
D112
L1
R74
R65
R66
D17
D29
R68
+
C213
R228
IC20
2
R227+ C217
C216
C214
C215X203
X202
X204
X201R223R221
R222R224
C212
IC20
1
T203
T204
T202
R219
R218 R213
X3
R205
R206 R208R209
R203
R212
R220R2
17
R215 R2
14
C203
T5
C204
D28
+
C208
+C2
10
D105
C211
C31
+C3
4
T17 R75
C430
C407
X1
+
C28
+
C425
R52
C36
+C424
R58
+
C207
R211
R440
R441
R454
D9
R456
T418
T419
R455
C102
R105
R457
C429
R445R446
R451
R444
L4
R439
R360
T417
R437
C423
X401
T112
C412
R115
366
T106
R159
L401
T416
C420
R309
T124
X306
X301
X303
R50
X305
X304R310
X302
R359
C421
D303R357
R358
R356
T303
T302R349
R348R347
R337
T301
D301
R336
C314
R3
C312
C419
R361
+ C311
R334
R333
C310R338
R352C320
C319
R354R355C316
C315R341
R342R343
+ C303
R306IC303
R308
R307
R304R305
SW1
IC30
4
R2
P101
P1
IC2
+ C301
F4
+C3
0
L2
F2
+C302
IC301
IC30
2
R450
R302
R301
R453R452
C428C427
C426
R449
R443
R447
IC40
1
T405R415
R413
R458
R412
C411
C404
C405
R421
R420
R422
R431
R425
R428
R434
IC10
1
R316
R317
R331
+C3
2IC
3
+
C128
R164
C39
+
C401
D409
D401
R67
L3
R178
R55
T8
D19
D18
T9
T10
R59
R63
R45
R44
R43
R64
R62R61
R57
D15D1
6
T11
+
C13
T12
R332
C308
R56
D14
D13
C309
R330
T7T6
D410
R442
R207
C416
C120
R204
R329
R326
R325
R318
J302R327
R319
R42
R41 R40
R39
+
C307
C306
R328
R320
R321
R322
R323
C304C305
R118R113
IC10
2
R165
+C127
J301
R125
R38
R37
R36
R35
D32 R2
0
TR2
R122
R324
R345
R314
R312
D33
D21
R313
+
C422
R315
R152
D133
R123
X307
R124
C135
R346
5V-USB
Circuit description of CCM420 monitor Application NoteAN97032
Philips Semiconductors
35
2k2
150k
5k1
4n7
548
BZX7
9C6
V2
BZX79C3339
k54
8
470
10
+ 25V
470u
4k7 22n
275V
220n
MOC2A60-5
275V
220n
275V
220n
500R
BT15
1
1k
1M11
0k
1k5
150k
220k
547
C6V2
BZX7
9
NFR2
5H10
E
+16V
68u
AC05
10E
+
400V
220u
500V 2n225
0V2n
2
10u
10u
250V~4n7
BYD13J
PR02
220
1k-+
250V
150u
1k
250VAC2n2
250VAC2n2
AC04
390
82A
CNX
TDA4
854
+
25V
470u
+ 16V
1000
u
st.2
p
BYD3
3K
250V
2n2
BYW5
4TD
A838
0
+25V470u
FAST2A
10n
NFR2
54E
7
MOC2
A60-
5
BYD73D
NFR2522E
548
BYW5
4
BYW5
410u
BYW5
4
BYV9
9
680p
680
2n2
680p
500V
220p
10p
AT40
43/2
0
1k2
+
25V47u
+470u
25V
100k 18k
5k1
47k
15k
0.47
NFR2
5H
NFR2
5H0.
33NF
R25H15
k
1k
slow2A
10u
BYD73D
4148
BYR29-800
2322-662-96126
+100V47u
BYD33G
+
25V47u
100
2kV4n7
68k
63V
1u
820
BYV28-100
2n2
4M7VR37
12MH
z
BZX79C10
6u8
+
63V
4u7
NFR2
5H10+
25V
100u
10k
BUK4
45 47k
330p100p
3n3
1k
2n7
150k
150k
150k
47k
47k
47k
47k
150k
150k
BUK445
BUK445
4148
+63V
10u
470n
10n
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375
100
680
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220
270
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2.7
1N58
22
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9F
47
37637
5
3k3
120
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522
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BUK4
45
BZX79C10
4k7
BU25
32AL
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548
IRF9630
BUK4
45
10n
CU15
/35
PE40
15/0
1
10k
100n
24k
2k2
250V
120n
250V
220n
548
+
100u
41481M5
150k
MPSA
44
C75BZX79
BYD3
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+1u25
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150k
150k
1M8
BYD7
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BZD23C5V1
36k
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4148
PR01
27
BYD3
3M
10k
1k
BYD33M
376
13k
C6V2BZX79
BUT11A
MPSA44
MPSA
44
100n
33
3M3
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PR01120
+
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375
4148
10k
NFR2
5H3.
3
470P
1kV
10k
220k
11k
1k
IRF9630
+
4u7
63v
120
33n
250V
270k
100k
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250V22n
200VBYV27
1M5
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3k3
22
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PH23
69
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375b
BYD3
3M
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39k
- +25
0V15
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10u
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1M5
2M7
1k
220k
270
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3M3
47k
1k
33n250V
BYD33D
270k
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4148
AT20
97/M
1
BYD73D
1k MPSA44
4148
+
25V
470u
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st.3p
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548
C4V7
MPSA
92
100V22n
548
548
548
548
4148
PR01 100k
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1M
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3k3
1k10k
120k
47k
220n/250V
BYD73D
Main
s-
TU30
5b2
1k
NFR25 10E
NFR25 10E
colo
rBi
-
LED
4148
1k
+
68u
16V
4.7TD
A705
3A
100k+68u
16V
100n
470n
470nst
.3p
st.3
p
st.3p
st.3p4k74k7
4k74k7
100n
LM35
8
548
558
558
1k
3.3 100
3p-h
eade
r
180k
39k 22k100k
1k8
33k
22NF
R25H
100E
NFR2
5H10
0E
680
100n
W9NA
80
220n
4148
+25
V47
u+
25V
47u
4148
470n
330n
+10
00u
16V
548 47k
1n
150n
st.2p
+16V1000u
+ 16V
330u
100
100p
+50V
47u
39k
+
25V47u
43k
5k6
PR01
2k7
330k
BYD33D
3k9
558
558
3k9
470p
100
4k7
2n7
1E81E8
10k
2k0 10u
10k
27k
548
47k
400V47n
st.7p
MPSA
42
4n7
NFR2
5H6.
8
100E
PH23
69
1k
U20
1.2m
H
BUK445
250V
1u2
PR0315E
548
st.-
12p
st.-14p
st.-
8p
PR03270
st.-6p
st.-4p100E
st.-4p
NFR2
522
0E
160V
5u6
41486k8
4k7
12k
548
548270E
10k10k
2k2
558
C5V6 8k2
10n
AC042E7
2n2
250V
470n
6k8
+16V
68u
4E7
1k
10p1k5
22k100n
100n
100E100E100p
100p100E
100E100E
+16V
68u
10ETDA8447
100E
100E
100E100E
Swit
ch
P83C
181
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Circuit description of CCM420 monitor Application NoteAN97032
Philips Semiconductors
36
Location of SMD parts.
Control part:
This drawing shows the SMD components underneath the deflection con-troller TDA4854 seen from the solder side.
EHT and focus part: SMD parts seen fromsolder side:
• D131: located underneath D132.
• R112, R119, C108, C134, C136: locatedunderneath IC101.
• R117: located underneath IC102.
SMPS part:
T2: located underneath D7.
(No drawing shown)
C322
R353
C317R351
R350
C318
C321
R340R339
R344
C108 R117
C136
D131
+
C134
R119
R112
+
+
+
Circuit description of CCM420 monitor Application NoteAN97032
Philips Semiconductors
38
7. ALIGNMENT PROCEDUREThis alignment procedure is written for a complete CCM420 monitor: main board, key board, video board andCRT. In case of failure refer to chapter 8: debugging procedure.
7.1 EquipmentVideo generator Quantum Data QD903:
formats ranging from 640 x 400 to 1280 x 1024 pixels;
refresh rates ranging from 60 to 85 Hz.
DMM Fluke PM2421
EHT meter Brandenburg
Oscilloscope Fluke PM3384A
Colour analyser Philips PM5639
PC min. ‘486’ with windows 3.11 with I2C interface card
Software I2C control software version 1.60 for TDA4854, TDA4885 and TDA8447.
7.2 Alignment1. Turn both potentiometers on the main board ccw.
2. Connect the video generator and apply a signal with 1024 x 768 pixels at 76 Hz refresh rate (Fh≈64kHz).Choose testpattern SMPTE.
3. Connect the EHT voltmeter between anode and aquadag of the CRT.
4. Be sure the EEPROM’s are filled with the values as given in appendix Starting values of I2C registers onpage 43.
5. If possible make use of a separate degaussing device to demagnetise the CRT.
6. Connect the mains supply voltage and switch the monitor on with the mains switch.
7. Check that the monitor displays a picture after a few seconds. If not refer to the debug section.
8. Adjust the SMPS ‘185 Volt’ output to 185.0 ± 0.20 Volt measured across C22.
9. Adjust the EHT to 26.0 ±0.2 kV.
10. Display a cross-hatch pattern.
11. Adjust static focus with the focus potentiometers on the EHT transformer.
12. Front panel switch “USER - SERV.” must be placed in SERV. position.
13. Press the Menu button once: check that the OSD shows the mode information. If not refer to the debugsection.
14. Press the Menu button again: the OSD now displays the user control menu.
15. Position the picture in the centre of the screen and adjust width and height to nominal size 312 x 234 mm2.
16. Adjust the pincushion, pincushion-balance, corner, trapezium, parallelogram, horizontal and vertical linear-ity and rotation to obtain optimum geometry.
17. Display a pattern with a 1 Nit luminance. See appendix Video drive levels on page 44.
Circuit description of CCM420 monitor Application NoteAN97032
Philips Semiconductors
39
18. Adjust grid 2 such that the brightest colour reaches the required level for a total luminance of 1.0 Nit. Note:the required level for each of the three colours for a total luminance of 1.0 Nit is: Red: 0.3 Nit; Green 0.59Nit; Blue: 0.11 Nit.
19. Then decrease the cathode voltage of the two remaining colours to their respective brightness for a totalbrightness of 1.0 Nit.
20. Display a pattern with a 10x10 cm2 box in the middle of the screen with RGB input signals of 700 mV. See
also appendix Video drive levels on page 44.
21. Adjust the gain of the three channels to a total luminance of 100 Nit with reference D6500.
22. Check the black levels again and re-adjust if necessary.
23. Display a focus pattern (i.e. Randomtext).
24. Adjust the static focus potentiometers on the EHT transformer for optimum sharpness on a screen positionin a circle of 150 mm diameter around the centre of the screen.
25. Adjust the dynamic focus for optimum sharpness on the centre and the edges of the screen.
26. Readjust static focus (and then dynamic focus) if necessary.
27. Save the settings.
Circuit description of CCM420 monitor Application NoteAN97032
Philips Semiconductors
40
8. DEBUGGING PROCEDUREThe debugging of the main board is described in a complete monitor set-up fitted with CRT M41EHN323X145and video amplifier board PR37981. Only the most common failures are described.
1. No picture:
Check: 185 Volt output of SMPS;
all other output voltages of the SMPS (+11 V; +18 V; -18 V; +78 V; limits for all output volt-ages +/- 10 %);
+12 Volt (+/- 0.75 V) on pin 10 of the TDA4854;
+5 Volt (+/- 0.25 V) on pin 24 of the P83C181;
line deflection;
EHT part;
grid voltages Vg1 (-62 +/- 2 Volt) and Vg2 (400 - 600 Volt);
vertical deflection;
2. 185 Volt output not present:
Check: mains fuse F1;
output rectifier D26;
fusible resistors R9, R22, R32, R33 and R34;
line deflection parts T402 and T403;
supply voltage of IC1;
output drive signals of IC1;
main switching device T5;
over-current protection level on pin 13 of IC1;
3. Auxiliary SMPS output voltages missing:
Check: output rectifiers D22, D23, D24, D25;
fuses F2, F3, F4;
voltage stabilisers IC2 and IC3;
4. Distorted picture:
Check: alignment;
S-correction switches (see table in chapter 3.4.3 Linearity and S-correction control);
linearity control circuit of horizontal deflection;
flyback voltage of vertical deflection (Tfb = 300 ± 50 µs; Vpeak = 43 ± 3 Volt);
all supply voltages for excess ripple voltages (185 V: < 0.200 Vpp; 11 V: < 0.800 Vpp);
5. No line deflection:
Check: presence of horizontal and B+ drive signals of TDA4854;
base drive voltage of T403;
gate drive voltage of T402;
line deflection parts T402 and T403;
Circuit description of CCM420 monitor Application NoteAN97032
Philips Semiconductors
41
6. No vertical deflection:
Check: vertical drive signals of TDA4854;
flyback supply voltage;
vertical deflection output stage;
7. EHT not present:
Note: the horizontal deflection stage must be operating!
Check: all fusible resistors R114, R115, R156 and R164;
duty-cycle of PWM output pin 6 of IC101 (< 90 %);
base drive signal of T109
X-ray output pin 7 of IC102
8. Vg1 not present:
Check: supply voltage -200 Volt;
protection signals ‘Vguard’, ‘HUNLOCK’ and presence of horizontal flyback pulses;
polarity and value of D130;
9. Vg2 not present:
Check: supply voltage on C120: 700....900 Volt;
output voltage of TDA8447 pin 16 Vg2D: 0.4 to 4.6 Volt;
polarity of D135;
base voltage of T113;
10. Dynamic focus signals not present:
Check: focus signal on pin 32 of TDA4854
supply voltage on C117: 700....900 Volt;
emitter voltage of T123;
position of D116 and D117;
11. No rotation control:
Check: fusible resistors R215, R217;
presence of vertical blanking pulse VrotS;
signals NSTR and HROT (both 0.4 to 4.6 Volt);
signal VRotS;
resistor R220.
12. No OSD:
Check: connector X303 and the cable to the video board;
signals ENN, SDI and SCK on pins 1, 2, 3 of the P83C181 while operating the key board.
Circuit description of CCM420 monitor Application NoteAN97032
Philips Semiconductors
42
9. REFERENCES
AN97072 Pin description of TDA4854 I2C controlled ASDC.
AN97039 Video amplifier board with TDA4885 and CR6927.
ETV/AN97002 Low power and low cost horizontal drive circuits with U15 core.
Data sheets:
TDA4854 I2C-autosync deflection controller for PC/TV monitors
Date of issue: 1997 Apr. 16
TDA4885 150 MHz video controller with I2C-bus
Date of issue: 1996 Mar. 13
TDA8354 Full bridge current driven vertical deflection output circuit in LVDMOS
Date of issue: 1996 July
P83C181 Microcontroller for monitor with DDC interface, auto-sync mode detection and sync processor
Date of issue: 1997 Mar. 14
TDA8447 Bus controlled octuple 8-bit DAC
Date of issue: 1996 Mar. 11
CR6927 Triple video driver hybrid amplifier
Date of issue: 1996 Apr. 19
Circuit description of CCM420 monitor Application NoteAN97032
Philips Semiconductors
43
APPENDIX 1 STARTING VALUES OF I2C REGISTERS
In the following tables the starting values for the I2C registers and the switch position are shown.
These values should either be present in the EEPROM or loaded via the I2C software control
program in the applicable device.
TDA4854 control registers and switch positions:
Register Value Switch 0/1
H-size 150 BLKDIS 0
H-pos 127 HBC 0
V-size 85 HPC 0
V-pos 63 AGCDIS 0
V-lin 8 VSC 0
V-lin-bal 8 MOD 1
H-pin 40 TVMOD 0
H-pin-bal 8 FHMULT 0
H-trap 8 VOVSCN 0
H-paral 8 CLAMP 1
H-corner 4 VBLK 0
H-focus 27 VLC 0
V-focus 6 VPC 0
H-moire 0 ACD 0
V-moire 0 STDBY 0
SOFTST 1
TDA8447 control registers:
Register Value
Hlin 127
NStrap 127
H-Rot 127
Vg2 185
Circuit description of CCM420 monitor Application NoteAN97032
Philips Semiconductors
44
TDA4885 control registers and switch positions:
Register Value Switch 0/1
Contrast 58 PEDST 1
Brightness 16 DISO 0
OSD Ctrst 15 DISV 0
Gain R 60 FPOL 1
Gain G 55
Gain B 35
Black level R 190
Black LevelG
190
Black LevelB
190
APPENDIX 2 VIDEO DRIVE LEVELS
To display a grey level of X Nit the necessary drive level at the input of the video stage can be calculated ac-cording to the following rules:
• For a given drive voltage the output luminance can be calculated according to the following equa-
tion: LUM C Vdrive= ´( )g .
• The maximum grey level is set at 100 Nit full screen at a contrast setting of 58 and nominal brightnesssetting 16
• With a maximum video input level Vdrive = 0.700 Volt for LUM =100 Nit one can derive the gain factor of
the video channel with the following equation: C LUMVdrive=
g
. Inserting above mentioned numbers,
assuming γ = 2.25 result in C = 11.061.
• The drive level in Volts for a wanted luminance level LUM can be calculated with the following formula now
that all parameters are known: Vdrive LUM C=
g /
• For example: for 1.0 Nit output, the drive level at the input should be 90.4 mV.
APPENDIX 3 TDA4854 HORIZONTAL FREQUENCY RANGE
The horizontal frequency range of the TDA4854 is determined by the value of two resistors and one capacitor.The value of resistors R350 and R351 is determined by the frequency limits of the application. The capacitorC318 (horizontal oscillator capacitor connected to pin 29) though should be 10 nF for optimum jitter perform-ance. The value of this capacitor should not be changed.
Given a specified frequency range (and C318 = 10 nF) the value of the resistors R350 and R351 can then becalculated with the following formulas:
Circuit description of CCM420 monitor Application NoteAN97032
Philips Semiconductors
45
Note: the minimum and maximum frequencies in the formulas should be inserted in ‘kHz’. Tolerance taken inaccount is 3 % for the IC, 2 % for the horizontal oscillator capacitor and 1 % for the resistors R350 and R351.
RF F
350 20 0012=
+ ´
78
min . min kΩ
RF F
'max . max
351 2
78
0 0012=
+ ´
kΩ
RR R
R R351
350 351
350 3510 8=
´
-
´''
. kΩ
Note : R’351 does not really exist; this is only for the calculation.
For a sync frequency range of 15.6 kHz to 85 kHz the resistor values become:
R350 = 5208 Ω; nearest available value: 5230 Ω (1 % SMD resistor);
R351 = 735 Ω; nearest available value: 732 Ω (1 % SMD resistor).
APPENDIX 4 USER INTERFACE
The user interface in the CCM420 monitor consists of a five button keyboard and the control softwareCCM420S. An OSD window pops up when the user operates one of the pushbuttons:
1. The MENU button gives access to the various levels of user control and service control.
2. The SHIFT left/right and ADJUST down/up perform different actions depending upon the control level:When the MENU button was not activated the SHIFT buttons give direct access to the Brightness control,while the ADJUST buttons give direct access to the Contrast control. In both cases an OSD pops up toinform the user about the action taken.
3. With the MENU button one can scroll down through the control levels. In each control level the desiredfunction can be selected by pushing the SHIFT down or up button.
The control is divided into a number of levels. Each of these levels will now be discussed shortly:
First level: Mode identification; no user control possible.First line: Horizontal frequencySecond line: Vertical frequencyThird line: Mode information; either the standard VESA identification (if applicable) is shown or
the number of this user defined mode.
Second level: User controls.First line: Brightness, Contrast, Degauss, Horizontal Moiré, Vertical MoiréSecond line Horizontal position, Horizontal size, Vertical position, Vertical sizeThird line: momentary setting of actual controlFourth line: name of actual control function.
Note : The following control levels can only be accessed if the switch on the left hand side of thekeyboard is set in "Service" position.
Third level: Video control.
Circuit description of CCM420 monitor Application NoteAN97032
Philips Semiconductors
46
First line: Red Black level (RB), Green Black level (GB), Blue Black level (BB), OSD contrast(OC), Colour temperature (CT)
Second line: Red gain (RG), Green gain (GG), Blue gain (BG), CRT grid 2 (G2)Third line: momentary setting of actual controlFourth line: name of actual control function.
Fourth level: Horizontal control.First line: Pincushion (HP), Pin-balance (HB), horizontal linearity (HL), Corner (HC), Trapezium
(HT)Second line: Parallelogram (PA)Third line: momentary setting of actual controlFourth line: name of actual control function.
Fifth level: Vertical control.First line: Vertical linearity (VL), Vertical linearity balance (VB), Vertical trapezium (VT), Tilt (TI)Second line: (not used)Third line: momentary setting of actual controlFourth line: name of actual control function.
Sixth level: Miscellaneous control.First line: Vertical focus (VF), Horizontal focus (HF), Aux 1 (A1)Second line: Aux 2 (A2), Aux 3 (A3), Aux 4 (A4), OSD Hor. pos. (Oh), OSD Vert. pos. (Ov)Third line: momentary setting of actual controlFourth line: name of actual control function.
Seventh level: Automatic save and quit.
APPENDIX 5 KEYBOARD
The circuit diagram of the keyboard to be used with this main board and software is as follows:
1k
100k620E
1k
1k
1k
1k
3k
To X304
4321
SERVICE
USERCURSOR-
ADJUST-
ADJUST+
CURSOR+
STATUS
Circuit description of CCM420 monitor Application NoteAN97032
Philips Semiconductors
47
APPENDIX 6 I2C CONTROL MENUS
This software can be used in a debugging phase of the hardware for instance in case no µControlleris available (mind the setting of the S-correction switches).The I
2C Control Menus control the IC’s via a Personal Computer, which should fulfil the following
system requirements:
Hardware Requirements:- 80486 compatible PC or a Pentium with a microprocessor running at least 100 Mhz- a hard disk- Centronics parallel printer port- One of the following I
2C -bus interfaces:
- Hardwareless- Single Master (OM 4777; external +5Volt power supply needed)- Multi Master (OM 1022; external +5Volt power supply needed)- HighspeedBoard (Philips PC-MIO board)
Software Requirements:- MicroSoft MS-DOS version 3.1 or later- MicroSoft Windows 3.0 or later in standard or enhanced mode
GENERAL INFORMATION.
ERROR MESSAGES:When starting an I
2C-Control Menus program an hard- and software test is performed to test whether
the Interface card is connected correctly and to test the I2C transfer channel. If one of these tests
fails an Error Message Window will be displayed, explaining the type of error. If such an error occursat start-up the program will run in the “demo-mode’, which means that all functions can be controlledbut there will be NO I
2C data transfer. To be able to control the IC’s you should stop the program,
solve the problem mentioned in the Error Message Window and restart the program again.
SAVING DEFAULT SETTINGS:There are two types of savings:
- Application Settings- Set-up Settings
The settings of all controls (Potentiometers & CheckBoxes) can be saved within a file called‘filename.DEF’, in this way several default settings for different Applications can be saved. (The‘filename’ information can be defined by the user).The Program Environment can be saved by saving the Set-up Settings into a file called‘program_name.INI’ (The ‘program_name’ will be defined by the program itself, and will correspondto the name of the Program Name). The set-up settings include the following information:
- I2C data (Interface type, PrinterPort Number, Device address etc.)
- Last loaded Application Default File- Screen Position of the Menu Window
Both saving actions can be performed via the ‘File’ Menu.
Circuit description of CCM420 monitor Application NoteAN97032
Philips Semiconductors
48
LOADING DEFAULT SETTINGS:Loading Application Default settings can be performed by activating the “Load Application Settings”Menu Item within the “File”-Menu.When the IC’s are situated within the CCM420 monitor, it is also possible to load the actual defaultsettings of the Monitor, which are saved within the EPROM of the monitor. Before the program isable to perform this action it must be initialised to know what mapping is used. This can be done byperforming the “Load Monitors Mapping EPROM File” Menu-Item within the “File”-Menu. After load-ing the mapping file, called ‘filename.MAP’, a test is performed to control this function. If this test issuccessful the “Read Defaults CCM420”-Button will become visible in the Menu Window.
MENU WINDOW SIZE:The I
2C Control menus written for the IC’s used in the CCM420 monitor can be displayed in two or
more appearances. The first one shows all Controls that can be performed, either by Potentiome-ters or by CheckBoxes, and the Information Box showing what actual I
2C data is transferred. By
pressing the Expand-Button the Menu Window will show more detailed information, such as RegisterContents, etc. Within the I
2C-Control menus shown below, the Expand Button(s) are indicated by
the characters “A” and/or “B” and the several Visible Areas are separated by Vertical Black Line(s).
I2C-CONTROL MENU OF THE DEFLECTION CONTROLLER IC TDA4854.
Circuit description of CCM420 monitor Application NoteAN97032
Philips Semiconductors
49
I2C-CONTROL MENU OF THE VIDEO CONTROLLER IC TDA4885
I2C-CONTROL MENU OF THE D-A CONVERTER IC TDA8447
APPENDIX 7 CICT IC NEWSLETTER NO. 17
Circuit description of CCM420 monitor Application NoteAN97032
Philips Semiconductors
50
P83Cx81 will not be taken to RFS
CICT has decide not to proceed with plans to make available the P83Cx81 family of DDC monitor microcontrol-lers. This family was originally intended to serve the market for DDC monitors which were I
2C bus controlled.
The P83Cx81 was positioned as a cost down version of the P83Cx80 family.
However for the following reasons this positioning no longer makes sense:
• most customers do not think the P83Cx81 32 pins are enough and they prefer the 42 pins P83Cx80 ver-sions.
• the actual cost difference between the P83Cx80 and the P83Cx81 is very small.
• the P83Cx80 family can also be easily used for I2C bus controlled designs, it is not only for DC controlled
designs.
• we have no customer orders currently for P83Cx81.
Therefore we will not proceed with the development of this family. The P83Cx80 family are of course not af-fected by this decision.
If you have any customer interest in the P83Cx81 family please inform them of this decision ASAP.
For those customers investigating the CCM420 demo monitor (which uses P83Cx81) from SLE please be in-formed that functionally the P83Cx81 is a subset of the P83Cx80 so the CCM420 software can also be run onthe P83Cx80.
If you have any further questions please contact me directly.
Ian Jackson
IPM Monitor Microcontrollers
Consumer IC Taipei