R

TV-1800B (NTSC)(KX-523)

(without price)

FEB. 1997

< TUNING >

CONTENTS

Page

SPECIFICATIONS..................................................................................... 1

BLOCK DIAGRAM .................................................................................... 2

CIRCUIT OPERATIONS ........................................................................... 3

PRINTED CIRCUIT BOARDS ................................................................... 4

PARTS LIST .............................................................................................. 6

EXPLODED VIEW ..................................................................................... 9

SCHEMATIC DIAGRAMS ....................................................................... 11

WAVEFORMS ......................................................................................... 13

— 1 —

Item Specification

1. Power voltage DC 6.0 V

2. Power consumption Approx. 3.6 W

3. Current consumption Approx. 600 mA

4. Battery life (with alkaline batteries) Approx. 2.5 hours

Batteries : 4 × LR6 (D) size batteries

5. Power supply Car adaptor : CA-K65

AC adaptor : AD-K65

Earphone jack : 3.5 ø mini

6. Connection terminals External power jack : 6.0 V DC IN

External antenna jack : 3.5 ø mini

7. Screen size 2.5 inches

8. No. of picture element 118,800 (540 × 220) dots

9. Dimensions 135 mm (H) × 91 mm (W) × 38 mm (D)

10. Weight 240 g without batteries

AC adaptor : AD-K65

11. Options Car adaptor : CA-K65

Antenna matching device : AS-35S

SPECIFICATIONS

Color System TV System Channel

NTSC M / M US VHF: 2 ~ 13 ch UHF: 14 ~ 69 ch

— 2 —

Antenna

1 TU200 2 Q2003 IC200

7

TuningVoltageGenerator

VR600

VolumeControl

4 IC600 Speaker

IC300

IC700

CommonDriver

LCD

SegmentDriver

ChromaCircuit

Osc.Display ControlA-D ConverterAuto-Tuning Control

5

6

8 Q800 ~ Q806, Q810, Q811VR800

DisplayVoltageGeneratorBrightness

Control

VCC2 (4.3 ± 0.02 V)VCC7 (41.6 ~ 51.6 V)VEE1 (-6.5 ~ -8.0 V)

IC500

PowerSupply

AudioAmp.IF Amp.Tuner

VideoSound Det. FMAFT CircuitAGC Circuit

1 — Color Tuner: TU200 TEPE5-02Selects a desired radio wave and changes it to the video IF signal.

2 — Video IF Amp.: Q200 2SC4238Amplifies the video IF signal output from the tuner TU by 10 times (20 dB).

3 — Video Det./Sound Det./FM Det./AFT/AGC: IC200 M51348FPEliminates the carrier wave in the video IF signal, and picks up the video signal and the sound IF signal.Also, the sound signal is picked up from the sound IF signal by FM detection.

4 — Audio Amp.: IC600 NJM2070MSound amplification.

5 — Chroma Circuit: IC300 M52045FPGenerates the tricolor (red, green, and blue) from the video signal.

6 — Osc./A-D Converter/Display Control/ Auto-Tuning Control : IC700 MSM6625-01 GSK-640EConverts the color signal into a digital signal.Also, generates the clock pulse for the display and controls the display.

7 — Tuning Voltage Generator: IC500 MSC1169MS-KGenerates the tuning voltage with the tuning pulse (TU) output from 6.

8 — Display Voltage Generator: IC800 BA10358F, Q800 ~ Q806 Q810 Q811 2SD1149-S,2SD601A-R×3, 2SB709A-RGenerates the display voltages V0 ~ V4 with VEE1 and VCC7 outputs from the power supply.

BLOCK DIAGRAM

— 3 —

Signal Name Function Signal Name Function

D1 ~ D6 Display data output terminal MTB Mute control terminal

SNB Data latch signal TU Tuning control pulse output terminal

CDB Scanning start signal VLB VHF High/Low channel select signaloutput terminal

CFB Output voltage changeover signal UHF VHF/UHF select signal

CNB Scanning signal shift lock signal AVBKCB Key input terminalKDB

SCB Brightness modulation pulse control AFT AFT voltage input terminal

STB Sampling start signal M1 ~ M10 Mode select signal input terminal

ECB Signal input terminal controlling the TE1 ~ TE6 Test terminalsegment drive terminal to "H" duringno display

CK1, CK2 Clock pulse output terminal R, G, B Original color

OSC1 Oscillator frequency control terminal RLL "L" level voltage input terminal ofOSC2 video signal

PD Clock pulse adjustment terminal RHH "H" level voltage input terminal ofvideo signal

C-S Synchronizing pulse input terminal PS1 Mode control signal

HDB Horizontal synchronizing signal input VSS1 Power supply voltage input terminalterminal

VDD1 VDD voltage input terminal

CIRCUIT OPERATIONS

IC700

AD2

AD1

R

G

B

RLL

VDD2

RHH

M7

M8

M9

M10

PSi

VSS1

A/D

ModeControl

Test Control Mode ControlAFT

Control

VSS2 TE1TE2

TE3TE4

TE5TE6

M6 M5 M4 M3 M2 M1 AFT

KDBKCB

UHFAVB

MTB

VLB

TU

VDD1C-SPD

OSC1

OSC2

KeySwitchControl

MuteControl

SynchronismJudgment

FrequencySeparator

PhaseComparator

OscillatorFrequencyDivider

Horizontalpositioning

Control

Verticalpositioning

ControlData Output

ChannelbarControl

Tuning VoltageUP/DOWN Counter

Pulse WidthModulation D/A

SweepControl

FrequencyDivider

Tuning Control

TestCircuit

DisplayControl

D1 D2 D3 D4 D5 D6 CDB CFB CNB ECB SNB SCB STB HDB CK1 CK2

— 4 —

TU200

T100

C100

FU

100

C309JK100

D180 CN

701

H300

R313

R342

C30

5

C30

6

R734

D705

R733

C760

R705 R738

C756

R719C761

L705

C750

C755

R703

C741R704

R726

R727R725R700

D703 R808

C70

0

C80

8 C80

6D803

C810C845

R825R824

C831C832

VR800

VR600

L202

R247

R133

R314

C11

2

C115

L101

C113 T201 T200

C110L102

C105

SW

100

CN

700

C606

F20

1

F20

2

C210

C208C205

C207

R222

C60

0JK600

C60

3

F200

C236R207

C20

2JK200R210

R209

C233

C751

F20

3

C836

T950

C950C951

R950L950

C92

7

C92

5

PRINTED CIRCUIT BOARDS

TOP VIEWS

Linear

Back Light

— 5 —

R246

C261

D500

C263C262

C264R230C257 R241

R55

0R

541

R223

R236

R224C259

R212

C245C246

R215C243

R202

R204L200

C23

7

Q200R205R203R201

C234

R502R501 R500

CP204

R101

D100

Q100

Q101R102

R103

C550

C545R545

R111

R115C140

C145

R117

Q111

D150

R311

L700

C776R730

R810R809

Q802

R81

9

R833

Q806Q805

D805R827

R830

Q804

C830R229

R641

R610

R611

C642

R615

R645

R208

C240

C13

5

C265C235

HP200

C249

R606

R607

IC800

IC600

IC200

IC700

R312CP700

VR700

CP703IC300

VR100

IC500

CP240

CP245

C630

Q811

Q810

R822

R821 C840

R820

R834

R835R836

R740

C185R330

R331

C350

C351

R325

C346

R322C345

R343

R307

VR301

C347

R305

R306C291

C290

CP221

C742C740

D700

Q803Q801

Q800

R816R815

R817

C835

C765

VR200

D155

D152

R310C340

R326

R335

R336

Q300C335

C301VR300 +

SW700SW701

FU

901

FU

900

BOTTOM VIEWS

Linear

Back Light

PARTS LISTLINEAR PCB

Item Code No. Parts Name Specification Applicable Q R

DiodesD100 2390 1176 Chip diode MA152WK-(TX) Common 1 CD150 2390 1176 Chip diode MA152WK-(TX) Common 1 CD152 2390 1176 Chip diode MA152WK-(TX) Common 1 CD155 2390 1302 Chip diode MA153A-(TX) Common 1 CD180 2390 2450 Chip diode SC016-2-TE12RA Common 1 CD500 2360 1344 Chip zener diode MA3330-M(TX) Common 1 CD700 2390 0469 Chip diode MA157A-(TX) Common 1 CD703 2390 0469 Chip diode MA157A-(TX) Common 1 CD705 2390 1358 Variable diode MA329-(TX) Common 1 CD803 2390 0469 Chip diode MA157A-(TX) Common 1 CD805 2390 1253 Chip diode MA152WA-(TX) Common 1 C

FuseFU100 3632 0245 Fuse ATSCR0.80A Common 1 B

ICsIC200 2114 1827 Linear IC M51348FP-T1 Common 1 CIC300 2114 3332 Linear IC M52042FP-T1 Common 1 CIC500 2114 2842 Linear IC MSC1169MS-KR1-620 Common 1 CIC600 2114 2464 Linear IC NJM2070M-T1 Common 1 CIC700 2011 2695 LSI MSM6625-01GSK-640E Common 1 CIC800 2116 0119 OP AMP BA10358F-T1 Common 1 C

JacksJK100 3501 6846 Jack HEC2500-010110 Common 1 CJK200 3501 5439 Jack HSJ1456-01-210 Common 1 CJK600 3501 5439 Jack HSJ1456-01-210 Common 1 C

TransistorsQ100 2210 8026 Chip transistor 2SB709A-R(TX) Common 1 BQ101 2230 7011 Chip transistor 2SD601A-R(TX) Common 1 BQ111 2253 0308 Chip transistor 2SD1119-R(TX) Common 1 BQ200 2252 0707 Chip transistor 2SC4238-(TX) Common 1 CQ300 2210 8026 Chip transistor 2SB709A-R(TX) Common 1 CQ800 2230 7011 Chip transistor 2SD601A-R(TX) Common 1 CQ801 2210 8026 Chip transistor 2SB709A-R(TX) Common 1 CQ802 2230 7011 Chip transistor 2SD601A-R(TX) Common 1 CQ803 2230 7011 Chip transistor 2SD601A-R(TX) Common 1 CQ804 2230 7011 Chip transistor 2SD601A-R(TX) Common 1 CQ805 2253 0476 Chip transistor 2SD1149-S(TX) Common 1 CQ806 2230 7011 Chip transistor 2SD601A-R(TX) Common 1 CQ810 2210 8026 Chip transistor 2SB709A-R(TX) Common 1 CQ811 2230 7011 Chip transistor 2SD601A-R(TX) Common 1 C

SwitchSW100 3412 0938 Slide switch ESD-11V231 Common 1 C

ConverterSW100 3065 0469 DC-DC converter LC12U-31 Common 1 B

TunerTU200 1013 5511 Tuner TEPU5-02 Common 1 C

Variable resistorsVR600 2765 0616 Volume RK09H11T-10KB Common 1 CVR800 2765 1582 Volume RK09H11T-100KB Common 1 C

Notes: Q – Quantity used per unitR – Rank

— 6 —

BL PCB

Item Code No. Parts Name Specification Applicable Q R

LampLA900 3851 1484 Fluorescent lamp 8.76AD1P2-CA11 Common 1 A

FusesFU900 3632 0308 Temperature fuse EYP-1BF102L Common 1 CFU901 3632 0308 Temperature fuse EYP-1BF102L Common 1 C

TransistorsQ950 2253 0287 Chip transistor 2SD965-R Common 1 BQ951 2253 0287 Chip transistor 2SD965-R Common 1 B

SwitchesSW700 3412 1029 Switch SKHHAL Common 1 CSW701 3412 1029 Switch SKHHAL Common 1 C

TransformerT950 3012 1001 Inverter trans NT-04 Common 1 B

Notes: Q – Quantity used per unitR – Rank

— 7 —

COMPONENT

Item Code No. Parts Name Specification Applicable Q R

1 6611 6550 Display plate BXM-K523 K440953-1 Common 1 C2 6600 2220 Adhesive tape A-K52 K451-5 Common 2 X3 6608 7271 Adhesive tape B-K502 K410903A-2 Common 2 X4 6608 6560 Switch knob A-K526 K311299-1 Common 1 X5 6611 6511 Upper case BXM-K523 K110681A-7 For U.S.A., Canada 1 X5 6611 9281 Upper case BIM-K523 K110681A-11 Others 1 X6 3831 0854 Speaker 28-8F-03 Common 1 C7 6608 6330 Tuning button A-K526 K311318-1 Common 1 X8 6608 6340 Ribbon K526 K411841-1 Common 1 X9 6608 6301 Battery spring C-K526 K311313A-1 Common 2 X

10 6608 6311 Battery spring D-K526 K311314A-1 Common 1 X11 6608 6200 Side case A-K526 K110691-1 For U.S.A., Canada 1 X11 6611 6610 Side case A-K523 K110691-2 Others 1 X12 6610 9432 BL ass'y K211111B*1 Common 1 B

12-1 3851 1484 Fluorescent lamp 8.76AD1P2-CA11 Common 1 A12-2 3632 0308 Temperature fuse EYP-1BF102L Common 2 C12-3 6608 0170 Flat cable A-K541 K411565-1 Common 1 C13 6608 6360 Battery spring A-K526 K311321-1 Common 1 X14 6608 6370 Battery spring B-K526 K411830-1 Common 1 X15 6611 6476 Linear PCB ass'y K340720*1 Common 1 B16 3851 1463 Rod antenna VR60114FA Common 1 C17 6608 6190 Lower case BAA-K526 K110682-2 For U.S.A., Canada 1 X17 6611 6600 Lower case BXM-K523 K110682-4 Others 1 X18 6608 6350 Battery cover A-K526 K211023-1 For U.S.A., Canada 1 X18 6611 6620 Battery cover A-K523 K211023-2 Others 1 X19 6606 2130 Stand A-K331 K310518-1 For U.S.A., Canada 1 C19 6611 2300 Stand A-K503 K310518-7 Others 1 C20 6611 6630 Rating plate BXM-K523 K440954-1 Common 1 X21 6611 6491 Display unit K340722*1 Common 1 C22 5860 2380 Screw PS3 1.7X3.5 Bk Common 2 C23 5860 0420 Screw BT3 1.7X4 Ni Common 7 C24 5860 1449 Screw BT3 1.7X8 Bk Common 5 C25 6605 0011 Screw A-K334 K410096A-1 Common 1 C

Notes: Q – Quantity used per unitR – Rank

— 8 —

— 9 —

12-2

1

2

3

6

45

21

239

10

12

23

23

23

24

20

17

25

1314

15

23

16

18

19

24

22

24

11

7

12-1

12-3

2

3

8

EXPLODED VIEW

— 11 —

SCHEMATIC DIAGRAMSLINEAR

Audio Amplifier Circuit

IF detection Circuit

1

3

2

4

8

567

910

12

14

11

13

IF pad

Antenna

Tuner

BatteriesDC in

Power Switch

Chroma CircuitPower Supply Circuit

Tuning Voltage Generator Circuit

Speaker

Display Voltage Generator Circuit

Display Controller Circuit

To

LCD

To

Bac

k Li

ght

EarphoneJack

External AntennaJack

— 12 —

BACK LIGHT

— 13 —

WAVEFORMS

600

mV

3.2

V4.

0 V

63.5 µs 63.5 µs 63.5 µs

112

mV

10 V

2.8

V

100 ns

3.2

V

360 ns

1 Q200 Collector 2 IC200 Pin 19

5 IC300 Pins 10, 11, 12

3 IC200 Pin 18

6 IC300 Pin 5

9 Q111 Collector

4 IC300 Pin 23

B IC700 Pin 14A IC700 Pin 17

D IC700 Pin 12C Q806 Base

0 Q111 Base

8 IC300 Pin 17 IC300 Pin 4

0.9

V

0.24 µs

3.0

V

63.5 µs

2.0

V

63.5 µs

0.8

V

63.5 µs 63.5 µs 5.6 µs

5.6 µs

130 µs 63.5 µs

600

mV

2.8

V60

0 m

V

8-11-10, Nishi-ShinjukuShinjuku-ku, Tokyo 160, JapanTelephone: 03-3347-4926

MA0300271A

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