Great Company Great People
2005.06.27
Jinha Hwang
E-Mail: [email protected]
Training Manual (PDP)Training Manual (PDP)Training Manual (PDP)
Display Div. SCR Gr.Display Div. SCR Gr.
Great Company Great People
No image in the specific area (see the screen location2)
1. Check the related X-Board’s Power connector.2. Check the signal cable between Controller PCB & X-Board3. Replace X-Board
Correlation between screen & X-Board
1) Top left 3/10 X Top-Right/ Bottom-left board
2) Center Top 2/5 X-Center Top board
3) Top right 3/10 X Top-left/Bottom right board
X Top-left/Bottom right board4) Bottom left 3/10
X-Center Bottom board5) Center Bottom 2/5
6) Bottom right 3/10 X Top-right/Bottom left board
Screen Location X-Board
2. Known Tips as to no data and partial display No image/Data COF IC.
1) Caused by X-Board’s having no power or connections
Data COF is totally or partially not displayed
2) Check the connector between COF IC & X-Board3) Data COF IC is defective , replace the related X-Boards
Examples.
2 3
4 5 6
1
Non-image
Non-image white
Partially displayed
Fig #1Fig #1
Fig #2Fig #2
Regular vertical line with one or more Data COF IC
Great Company Great People
1) Check the related X Board’s power connector.2) Check the signal cable between Controller PCB & X-Board.3) Replace X-Board
1) This is caused by X Board out put IC being defective. When COF IC’s have data this means the data transfer between theController PCB and X Board is missing
2) Check all related X Board connections.3) Replace that X Board or CTRL PCB or both if needed.
3
4 5 6
1
Fig #3Fig #3
2 Correlation between screen & X-Board
1) Top left 3/10 X Top-Right/ Bottom-left board
2) Center Top 2/5 X-Center Top board
3) Top right 3/10 X Top-left/Bottom right board
X Top-left/Bottom right board4) Bottom left 3/10
X-Center Bottom board5) Center Bottom 2/5
6) Bottom right 3/10 X Top-right/Bottom left board
Screen Location X-Board
Partial error or total error with One or moreIC’s defective
Fig #4Fig #4
Great Company Great People
Related X-Board power supply voltage checkRelated X-Board power supply voltage check
Related X Board Connector checkRelated X Board Connector check
Related X Board & Connector checkRelated X Board & Connector check
Related X-Board replacementRelated X-Board replacement
Module (Panel) checkModule (Panel) check
Address Bar (Vertical) & Partial no-picture
Bottom left 3/10 of the screen with vertical bar Bottom left 3/10 of the screen with no-picture
Controller Board
X-RightX- Left
Y-SUS Z-SUS
X- Left
X Top - RightX- Left X Top - Center
VSC
V setup -Vy
-Ve
VS
VaVSC Board
Tuner Board
Fig #5Fig #5 Fig #6Fig #6
Fig #7Fig #7
<XL_TOP B/D>
<XL_BOTTOM B/D>
<XR_TOP B/D>
<XR_BOTTOM B/D>
As the above, the space charging screen display is allocated for each X Board ( XL_TOP, XL_CNT, XL_BOT, XR_TOP, XR_CNT, XR_BOT ).
Thus, if the occurring screen problems are limited only to the space X B/D, For example, regular vertical line or abnormal screen in Data COF IC unit, Data COF unit can be the problems of X B/D.The inspection method will be explained in next chapter how to inspect when screen display doesn’t work at all about each X B/D, giving examples of XL_Top B/D.
<XC_TOP B/D>
<XC_BOTTOM B/D>
screen screenscreen
screenscreen
screen
Address Bar (Vertical) & Partial no-picture
Great Company Great People
Great Company Great People
X X
Y
X X
Y
X
Y
X
60” 50”
42” 40”
10. Grid X and Y Layout by screen size
X X X
Y
71”
Vertical Lines
9. Verticla Data copy1) This happens when scan wave is not reproduced property
2) Replace Y-BoardFig #8Fig #8
Great Company Great People
Only bottom image is displaying
Only Top image is displaying
Y-Board & Y-Drive Board Connector checkY-Board & Y-Drive Board Connector check
Y-Drive Board (TOP) Drive IC checkY-Drive Board (TOP) Drive IC check
Y-Drive Board replacementY-Drive Board replacement
Bar (Horizontal) half-picture
Controller Board
X-RightX- Left
Y-SUS Z-SUS
X- Left
X Top - RightX- Left X Top - Center
VSC
V setup -Vy
-Ve
VS
VaVSC Board
Tuner Board
Fig #10Fig #10
Fig #9Fig #9
Fig #10Fig #10
Great Company Great People
Vertical Lines
6.One or more vertical lines in the screen
1) Irregular vertical lines is not related to controller PCB or X-Board) 2) It is mainly caused by the followings open (or short)
-. Panel tsself defect-. Data COF FPC attached to panel is open or short.-. Data COF attached to panel itself is defective.
7. One or more horizontal lines in the screen
1) Irregular vertical line is not related to Controller PCB or Y-Board.2) It is mainly caused by the followings open (or short)
-. Y FPC Connector -� reinsertion-. Open because of Y-Drive’s connector dry joint �Drive Board replacement-. Panel itself is defective, Y-FPC attached to panel itself is open or short
8. Regular vertical lines in the whole screen. (mainly in one specific color, regular line is flicking)1) This problem is related to CONTROL PCB2) Replace CONTROL PCB
Regular vertical lines in the whole screen.
There can be several horizontal lines.
There can be several line in ¼ inch wide areaIt can be screen on the both side, right and left.The area is sometimes over ¼ inch wide
Fig #11Fig #11
Fig #12Fig #12
Fig #12Fig #12
Module Control Inspection Method
☞. Regular vertical lines occurs at regular intervals on whole screen.
(Generally, regular flickering phenomenon occurs in specific color)
1) Occurring regular vertical lines at regular intervals is the problem related to DA of Controller B/D.
2) Because DA is related to IC202, 205(Red), IC201,204(Green), IC200,203(Blue), confirm if these parts are soldered smoothly.
※ Confirm the parts related to the color of vertical lines occurring on the screen mainly and see the below as to related parts.
3) Confirm if the connection between above parts are Shorted with 3.3v or Ground.
4) Confirm if the adjacent two pins are shorted each other in connection with above parts.
5) Confirm if specific pin is not soldered in connection with above parts.
6) Confirm if the pin connected IC200-IC205 of DA is generated well and soldered smoothly.
7) Check the PCB pattern .
8) Change the Controller B/D.
※ display type of screen
Vertical lines occurs at regular intervals on whole screen
The color of vertical line
RED
GREEN
BLUE
IC202, 205
IC201, 204
IC200, 203
※ The relation between color of vertical lineoccurring on screen and SGRAM (IC200-IC205)
Great Company Great People
Dark picture
10. Input signal pattern is displayed bud the screen is dark.1) It happens when Z Board is not operating well2) Check whether Z-Board’s power connector is plugged properly3) Check whether the signal connector between Controller PCB & Z-Board is plugged.4) Replace Z-Board Controller PCB
11. Input signal is white pattern but other colors are displayed in spots, missing data.
1) Check the slope & waveform of Y-Board and set up, set down 2) Check the slope of Z-Board’s ramp waveform3) Measure each Board’s output waveform by over 200MHz Oscilloscope and reference Fig12 and 13.
It is possible to control Y-Board’s set up slope by adjusting VR2 and Z-Board’s ramp slope by adjusting VR1.
Fig #12Fig #12
Y-Board measurement point : B61 (SUS_UP OUT PUT)
V-setup(200V~240V)
Vs(170~185V)
OV
140uS 170±5uS
10V
Vcc(90~110V)20±5uS
Fig #13Fig #13
Z-Board measurement point : B61 (SUS_UP OUT PUT)
Vs(170~185V)
3±2uS
23uS
Z-Ramp voltage waveY Sustain voltage wave
Great Company Great People
Panel TestingEtching Correction (Activating Heat Run) for Defective Panel
To enter in to White Balance (Heat Run), Press Power On (1).Then,Press adjust right(2) to activate Blue, Green and Red.With the Heat Run activated on White Balance run for 6 hoursAnd check color background by pressing adjust right(2) forTesting picture quality. Complete and repeat if needed not to exceed 24 hours.
OLD NEW
Panel Testing (Adjustment)
Z-Board Operation Principles☞. The structure and operation of Z B/D circuit
Z BOARD receives switch open and shut order signal from CONTROL BOARD and makes single SUS_OUT output wave form of
high voltage.
The switches used for forming wave form are 6 kinds and POWER FET for high voltage-high current is used.
6 signals connected from CONTROL BOARD ( SUS_UP, SUS_DN, E/R_UP, E/R_DN, RAMP, Z_BIAS ) adds to the gate of each
FET through buffer(IC1) and FET DRIVER IC (HCPL314J). The rest of 4 switch excluding RAMP and Z_BIAS have high
frequency of drive and many current frequency and much heat, so it is module type with IC and this module has FET and FET
DRIVER IC (IR2113S).
On the other hand,when SUS_UP and SUS_DN comes in HIGH at the same time,it is supposed to Shut-down the FET
DRIVER IC (IR2113S) to prevent them from turning ON at the same time.
The condenser for E/R (Energy Recovery) is fixed for pin 16(ER_COM)of IC4,5,6 to raise energy efficiency,and coils are put in
the passage to the SUS_OUT line to fix output ascending and descending roll off when E/R part switching.
The SUS_OUT output formed in Z BOARD is supplied to all the ROW of every panel equally.
Z Board BLOCK DIAGRAM
Vs(170-190V)
SUS_UP
SUS_DN
E/R_UP
E/R_DN
RAMP Connected to PANEL.
`
3
1-b
2-b
1-a
2-a
Vz ( Vs-12V )
Z_BAIS
4
Z_SUS_OUT
Z-Board Operation Principles
ER_UP
ER_DN
SUS_UP
SUS_DN
Vs
Vs
IPM for Sustain Pulse Generation and ER
The part for Ramp of Erase Pulse
L
SUS_OUT
LM317VzbVs
The part for Vzb
VR
Z bias
RAMP
_UP
■Schematic Diagram of Z Sustain Board
Great Company Great People1
Great Company Great People1
Picture is dark and wrong discharge(phenomenon) Picture is dark and wrong discharge(phenomenon)
IPMCheck the B+ terminal & Cable connectorCheck the B+ terminal & Cable connector
Connector of badness : Picture is dark & has too much noise
Connector of badness : Picture is dark & has too much noise
Check the Z-Board and cable connectorCheck the Z-Board and cable connector
Z-Board
Great Company Great People1
Insert to Z-Board and X-Board linking connector is badPicture is dark and wrong discharge(phenomenon)
Z-Board
Controller Board
X-RightX- Left
Y-SUS Z-SUS
X- Left
X Top - RightX- Left X Top - Center
VSC
V setup -Vy
-Ve
VS
VaVSC Board
Tuner Board
Check the B+ teminal & Cable connectorCheck the B+ teminal & Cable connector
Connector of badness : Picture is dark & has too much noise
Connector of badness : Picture is dark & has too much noise
Check the Z-Board and cable connectorCheck the Z-Board and cable connector
Y-Sustain Board
Vs
Vsetup
Vsc
-Ve
+
+
+
-Vy
+
Er_up
Er_dn
Sus_up
Sus_dn
Pass_top
Pass_btm
Ramp_up
Ramp_dn SW
SE
SE
SCAN
NSCAN
FGND
FGND2
+15V(F2) 15V(F2)
15V(F5)
15V(F)
FGND5
SUS_UP
15V(F)
15V(F)
FGND3
15V(F3)
FGND4
15V(F4)15V(F)
voltage LEVEL : Vs, Vsc, Vsetup, -Vy, Ve, +5V, +5V(F),15V, GNDFGND, +15V(F), FGND2, +15V(F2), FGND3, +15V(F3)FGND4, +15V(F4), FGND5, +15V(F5), VPP
I P MI P M SCAN DRIVER IC
(SN755864APZP)
YSUS_DN
■ Schematic Diagram of Y Board
Y-Sustain Board
Y0V
Set-up Scan Sustain
Set-upSet-up □It is the process of charge form in internal wall and initial reset.
□It affects greatly wall charge form part.
ScanScan
SustainSustain
■ Role of Y Board
□It is for PDP Module brightness and graduation form.
(ex. If it has more Sustain , it gets brighter and it indicates graduation and luminance.)
□It is also called address section , confirms if there is X part data.(It is the section that determines existence of operation in sustainsection due to the first discharge.
Y-Sustain Board
<Set down stage>
the state sagging the voltage gradually and decreasing the formed wall charge in uniform cost without discharge
the stage preparing for Scan ,having uniform cost of wall charge in discharge space
< Scan stage >
the stage other line Scanned Nothing happens
< Scan stage >
the stage present line is scanned
External operation discharge occurs by the voltage authorized to polarity inversion and wall charge of Y polarity inversion part
< Sustain stage >
surface charge occurs between Y polarity inversion and Z polarity inversion by the voltage authorized to Y polarity inversion and wall charge of Y polarity inversion part
< Sustain stage >
surface charge occurs between Y polarity inversion and Z polarity inversion by the voltage authorized to Z polarity inversion and wall charge of Z polarity inversion part
< Erase stage >
the stage
swelling the
voltage gradually
and dissipating
all the wall
charge
< Set up state >
the stage swelling the voltage gradually and increasing the amount of wall charge
Scan polarity inversion(Y)
A2 wave form
Common sustain polarity inversion (Z)
Data polarity inversion (Y)
180 V
180 V
280 V
70 V
70 V
180 V
180 V
Setup Scan ( Address ) Sustain Erase
Set downSet up
X
Y Z460 V 180 V
X
Y Z180 V 180 V
0 VX
Y Z0 V 180 V
0 VX
Y Z70 V 180 V
70 VX
Y Z0 V 180 V
70 VX
Y Z180 V 0 V
0 VX
Y Z0 V 180 V
0 VX
Y Z0 V 0 V
0 V
(1) (4) (5)(3) (7) (8) (9)
(9)(8)(7)(5)(4)(3)(2)(1)
(2)
the stage wall charge has
increased by scan stage
X
Y Z180 V 0 V
0 V
(6)
(6)
Y-Sustain Board
PDP
CRT
..... .....
brig
htness
brig
htness
time
time
1/60 seconds
1/60 seconds
Mechanism of brightness(graduation) expressionDisplay Device
PDP vs. CRT
◈ In the case of PDP, luminance control by current is difficult because of ultraviolet rays saturation by current and visible rays saturation to the ultraviolet lays . Discharge occurs all over the screen period and discharge frequency indicates luminous intensity.(luminance ∝ discharge frequency)
◈ CRT indicates luminous intensity by electron beam intensity and one pixel brightens only once on one screen.
4. The control method of VR position such as Y-Board V-Setup voltage, VSC voltage, -Vy voltage and voltage
V-SET UP voltage
R89 both end CHECK
VY,VE voltageR8,R9 both end CHECK
VSC voltageR60 both end CHECK
ONE POINT Check Method 42” KK
Flicker is bad Flicker is bad
Y Board
Controller Board
X-RightX- Left
Y-SUS Z-SUS
X- Left
X Top - RightX- Left X Top - Center
VSC
V setup -Vy
-Ve
VS
VaVSC Board
Tuner Board
Check the VS, V-SETUP, confirmation of voltageCheck the VS, V-SETUP, confirmation of voltage
When there is wrong discharge effect andPicture doesn’t appear
When there is wrong discharge effect andPicture doesn’t appear
Check the Y-Sustain Board and cable connectorCheck the Y-Sustain Board and cable connector
ONE POINT SVC Guide
Great Company Great People1
Flicker is badFlicker is bad
Y Board
Controller Board
X-RightX- Left
Y-SUS Z-SUS
X- Left
X Top - RightX- Left X Top - Center
VSC
V setup -Vy
-Ve
VS
VaVSC Board
Tuner Board
Check the VS, V-SETUP, confirmation of voltageCheck the VS, V-SETUP, confirmation of voltage
When there is wrong discharge effect andPicture doesn’t appear
When there is wrong discharge effect andPicture doesn’t appear
Check the Y-Sustain Board and cable connectorCheck the Y-Sustain Board and cable connector
ONE POINT SVC Guide
ONE POINT Check Method
1. The contents to check surely before Z-Board check when screen darkness generates
1) Check the signal Line generated at Module Control Board
2) Check the Cable connected from Module Control Board to X-Board
3) Check the X-Board
4) Check the Cable connected from X-Board to Z-Board
2. The contents to check when voltage of Module Control Board 15V Line is sagged
1) Check the Module Control Board 15V Line Short
2) Check the Y-Driver Board Short
3) Change the Y-Board and Z-Board at the same time when 15V Line voltage is sagged about 8~9V. If only Y-Board is changed, badness can generates again.
3. Module changing, if UP Greade S/W is pressed at VSC Board, LED lamp isn’t turned on and flickered gradually inside VSC Board
42” KK
Great Company Great People1
Y-Driver Board Inspection Point
☞. The screen isn’t displayed at all Scan FPC wise.
1) If the screen isn’t displayed Scan FPC wise, it may be the problems between relevant Scan FPC and Y DRV B/D
2) Check if the connector of Scan FPC corresponding to the part that isn’t displayed is connected well with Y DRV B/D
3) Check if the Clock, Data signal of relevant Scan FPC input signal of Y DRV B/D is shorted with +5V or Ground.
4) Check if the output buffer of Y B/D related to relevant Scan Drive IC works normally.
5) Check if the signals are authorized well to relevant Scan Drive IC.
6) Check if the relevant Scan Drive IC Failed.
7) Check the PCB pattern.
※ examples of display type of screen
Normal part
The part that isn’t displayed at all
Great Company Great People
CURTAIN BAR Trouble Types
In the case of
Curtain Bar
In the case of
Curtain Bar
When setting up to Y-
Driver Board, Diode
Check the Down terminal,
it has a Short-circuit
When setting up to Y-
Driver Board, Diode
Check the Down terminal,
it has a Short-circuit
In the case of
wrong discharge
In the case of
wrong discharge
When setting up to Y-DriverBoard, Diode Check the Down terminal, it has aShort-circuit
When setting up to Y-DriverBoard, Diode Check the Down terminal, it has aShort-circuit
Both end Diode Check (when Short-circuiting,it has a problem)
ONE POINT SVC Guide
CURTAIN BAR Trouble Types
- 84 -Great Company Great People QAS 365QAS 365
ONE POINT SVC Guide
Great Company Great People1
Picture when signal is input Horizontal bar
Check the Y-Drive board connection state moduleOr an alien substance
Check the Y-Drive board connection state moduleOr an alien substance
Badness : horizontal barBadness : horizontal bar
Check the Y-Drive Board and module connection filmCheck the Y-Drive Board and module connection film
Controller Board
X-RightX- Left
Y-SUS Z-SUS
X- Left
X Top - RightX- Left X Top - Center
VSC
V setup -Vy
-Ve
VS
VaVSC Board
Tuner Board
ONE POINT SVC Guide
Controller Board
X-RightX- Left
Y-SUS Z-SUS
X- Left
X Top - RightX- Left X Top - Center
VSC
V setup -Vy
-Ve
VS
VaVSC Board
Tuner Board
Great Company Great People1
Specific part is black and has no picture Specific part is black and has no picture
Check the SCAN Drive IC Check the SCAN Drive IC
Check the connectionCheck the connection
Y-Drive Board Y-Drive Board
ONE POINT SVC Guide
Controller Board
X-RightX- Left
Y-SUS Z-SUS
X- Left
X Top - RightX- Left X Top - Center
VSC
V setup -Vy
-Ve
VS
VaVSC Board
Tuner Board
Great Company Great People1
Picture when signal is inputPicture when there’s no signal
Diode check Y-Sustain UP Terminal Diode check Y-Sustain UP Terminal
Diode check Y-Sustain Down TerminalDiode check Y-Sustain Down Terminal
Y-Drive Board Scan Drive IC bad , broken or short Y-Drive Board Scan Drive IC bad , broken or short
Y-Drive Board Y-Drive Board
ONE POINT SVC Guide
Module Control Board
4EA
4EA
Differntial input
TMDS 4Pair
LVDS 10Pair42” 5Pair
TMDSLVDS
SPTC4021
Frame Memory(1 Dealy)
3EA(arranged deletion)
3Bit(Serial communication)
Flash Mem
16
100MHz(OSC)
SSC
DA/MEM4011
DA/MEM4011
16*3(12*3)
16*3(12*3)
A
A
A
B
SF Mem(3)
SF Mem(3)
X, Y, Z Contro 8*3SF Mem(3)
SF Mem(3)8*3
8*3
8*3
Flash DownloadB
Temp Sense
Micom4
19
A74AC74
Demultiply dircuit
A
A
74LVTH541
Delay
74LVTH541
Delay
X Data((6*2)*11=132bit
X Data((6*2)*11=132bit
X clock Delay
X clock Delay
50/60KK CTRL Block chart
- 67 -Great Company Great People QAS 365QAS 365
Controller Board
X-RightX- Left
Y-SUS Z-SUS
X- Left
X Top - RightX- Left X Top - Center
VSC
V setup -Vy
-Ve
VS
VaVSC Board
Tuner Board
Great Company Great People QAS 365QAS 365
Module Control Board
Flicker is bad
ONE POINT SVC Guide Module Control Board
- 69 -
Check the controller board connectionCheck the controller board connection
Check the controller board B+ VoltageCheck the controller board B+ Voltage
Replace controller board Replace controller board
Great Company Great People1
Module Control Board
MCM IC Problem
BARS appears at regular intervals
Check the controller board connectionCheck the controller board connection
Check the controller board B+ VoltageCheck the controller board B+ Voltage
Replace controller board Replace controller board
Module Control Board ONE POINT SVC Guide
Great Company Great People QAS 365QAS 365
Module Control Board
ONE POINT SVC Guide Module Control Board
- 71 -
BARS appears at regular intervals
Control board & VSC connect cable CheckControl board & VSC connect cable Check
Check the controller board B+ VoltageCheck the controller board B+ Voltage
Replace controller board Replace controller board
Great Company Great People1
VSC Board Flicker is bad
VSC Board
Controller Board
X-RightX- Left
Y-SUS Z-SUS
X- Left
X Top - RightX- Left X Top - Center
VSC
V setup -Vy
-Ve
VS
VaVSC Board
Tuner Board
Control board & VSC connect cable CheckControl board & VSC connect cable Check
Check the VSC B+ VoltageCheck the VSC B+ Voltage
Replace VSC board Replace VSC board
#. VSC : Video scan controller
ONE POINT SVC Guide
Great Company Great People1
Bad work film is torn.When black ADD BAR appears
Controller Board
X-RightX- Left
Y-SUS Z-SUS
X- Left
X Top - RightX- Left X Top - Center
VSC
V setup -Vy
-Ve
VS
VaVSC Board
Tuner Board
Check the firm linking X-board & moduleCheck the firm linking X-board & module
Check the COF resistorCheck the COF resistor
Replace moduleReplace module
Check the firm linking X-board & control boardCheck the firm linking X-board & control board
ONE POINT SVC Guide
Great Company Great People1
Controller Board
X-RightX- Left
Y-SUS Z-SUS
X- Left
X Top - RightX- Left X Top - Center
VSC
V setup -Vy
-Ve
VS
VaVSC Board
Tuner Board
Check & Adjust : PFC /VS /VA Voltage topanel specification
Check & Adjust : PFC /VS /VA Voltage topanel specification
Check Y-Sustain Sub-amp waveformCheck Y-Sustain Sub-amp waveform
Replace Y-Sustain amp Replace Y-Sustain amp
Not Resolved? Replace Control boardNot Resolved? Replace Control board
ONE POINT SVC Guide
Great Company Great People1
Controller Board
X-RightX- Left
Y-SUS Z-SUS
X- Left
X Top - RightX- Left X Top - Center
VSC
V setup -Vy
-Ve
VS
VaVSC Board
Tuner Board
Check & Adjust : PFC /VS /VA Voltage topanel specification
Check & Adjust : PFC /VS /VA Voltage topanel specification
Check Y-Sustain Sub-amp waveformCheck Y-Sustain Sub-amp waveform
Okey? Replace Y-Sustain amp Okey? Replace Y-Sustain amp
Not Resolved? Replace Control boardNot Resolved? Replace Control board
ONE POINT SVC Guide
Great Company Great People1
Controller Board
X-RightX- Left
Y-SUS Z-SUS
X- Left
X Top - RightX- Left X Top - Center
VSC
V setup -Vy
-Ve
VS
VaVSC Board
Tuner Board
Check & Adjust : PFC /VS /VA Voltage topanel specification
Check & Adjust : PFC /VS /VA Voltage topanel specification
Check Y-Sustain Sub-amp waveformCheck Y-Sustain Sub-amp waveform
Okey? Replace Y-Sustain amp Okey? Replace Y-Sustain amp
Not Resolved? Replace Control boardNot Resolved? Replace Control board
ONE POINT SVC Guide
Great Company Great People1
Controller Board
X-RightX- Left
Y-SUS Z-SUS
X- Left
X Top - RightX- Left X Top - Center
VSC
V setup -Vy
-Ve
VS
VaVSC Board
Tuner Board
Check & Adjust : PFC /VS /VA Voltage topanel specification
Check & Adjust : PFC /VS /VA Voltage topanel specification
Check Y-Sustain Sub-amp waveformCheck Y-Sustain Sub-amp waveform
Okey? Replace Y-Sustain amp Okey? Replace Y-Sustain amp
Not Resolved? Replace Control boardNot Resolved? Replace Control board
Y-Sustain waveform test point Y-Sustain waveform
ONE POINT SVC Guide
Great Company Great People1
Controller Board
X-RightX- Left
Y-SUS Z-SUS
X- Left
X Top - RightX- Left X Top - Center
VSC
V setup -Vy
-Ve
VS
VaVSC Board
Tuner Board
Check & Adjust : PFC /VS /VA Voltage topanel specification
Check & Adjust : PFC /VS /VA Voltage topanel specification
Check the connection VSC & Control boardCheck the connection VSC & Control board
Okey? Replace VSC BoardOkey? Replace VSC Board
Not Resolved? Replace Control boardNot Resolved? Replace Control board
VSC Connector VSC Board Control Board
ONE POINT SVC Guide
Great Company Great People1
Check & Adjust : PFC /VS /VA Voltage topanel specification
Check & Adjust : PFC /VS /VA Voltage topanel specification
Check the X-board waveformCheck the X-board waveform
Okey? Replace X- BoardOkey? Replace X- Board
Not Resolved? Check for C.O.F IC ShortNot Resolved? Check for C.O.F IC Short
Waveform C.O.F CheckX-board connection
ONE POINT SVC Guide
Check & Adjust : PFC/VS/ VA Voltage to panelSpecification
Check & Adjust : PFC/VS/ VA Voltage to panelSpecification
Check Y-Sustain Sub-amp wave formCheck Y-Sustain Sub-amp wave form
Okay? Replace Y-Sustain AmpOkay? Replace Y-Sustain Amp
Not Resolved? Replace Controller BoardNot Resolved? Replace Controller Board
Not Resolved? PanelNot Resolved? Panel
Y Sustain waveform test point Y Sustain waveform Control board
ONE POINT SVC Guide
In the case of wrong discharge trouble
ONE POINT SVC Guide