Casio EV-510S, EV-510L Service manual

EV-510S (KX-609S)

INDEX

EV-510L (KX-609L)

SEPT. 1997

UHF VHF

4681012

CH CH

(without price)

< TUNNING >

EV-510S

CONTENTS

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

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

PRINTED CIRCUIT BOARDS ....................................................................... 3

EXPLODED VIEW ......................................................................................... 6

PARTS LIST .................................................................................................. 7

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

WAVEFORMS.............................................................................................. 14

SPECIFICATIONS

Item Specification

1. Reception channels VHF: 1 ~ 12 ch UHF: 13 ~ 69 ch

2. Power voltage DC 6.0 V

3. Power consumption Approx. 3.8 W

4. Current consumption Approx. 633 mA

Batteries : 3 AA size batteries

5. Power supply Car adaptor : CA-K65 AC adaptor : AD-K65

Earphone jack : 3.5ø mini

6. Connection terminals External power jack : 6.0 V DC IN External antenna jack : 3.5ø mini Audio / Video jack : 3.5ø

7. Screen size 2.5 inches

8. No. of Picture element 61,380 (220 × 279) dots

9. Dimensions 75 (W) × 37 (D) × 121 (H) mm

10. Weight 195 g excepting batteries

AC adaptor : AD-K65, 64

11. Options Car adaptor : CA-K65 RF connector : CF-13 Antenna matching device : AS-35S

TUV

Areas whose signals this TV cannot receive.

— 1 —

Antenna

BLOCK DIAGRAM

Power Supply

1 TU200 2 Q200

IF Amp.Tuner

IC290

Tuning Voltage Generator

VCC2 (4.5 ± 0.02 V) VCC7 (27.21 ~ 33.21 V) VCC6 (10.26 ~ 12.54 V) VEE1 (–8.36 ~ –6.84 V) VEE2 (–20.36 ~ –16.66 V)

3 IC200

Video Sound FM AFT Circuit AGC Circuit

Chroma Circuit

Display Control Auto-Tuning Control

Det.

IC700

4 IC600 Speaker

VR600

Audio

Amp. Volume Control

IC300, IC400

LCD

1 — Color tuner: TU200 TEPU5-01

Selects a desired radio wave and changes it to the video IF signal.

2 — Video IF amp.: Q200 2SC4238

Amplifies the video IF signal output from tuner TU200 by 10 times (20 dB).

3 — Video det./Sound det./FM det./AFT/AGC: IC200 M51348FP

Eliminates 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 NJM2070M

Sound amplification.

5 — Chroma circuit: IC300 M51403FP/IC400 M51404AFP

Generates the tricolor (red, green, and blue) from the video signal.

6 — Display control/Auto-tuning control: IC700 MSM6770CGS

Controls the display.

7 — Tuning voltage generator: IC290 BA10358F

Generates the tuning voltage with the tuning pulse output from 6.

— 2 —

TOP VIEWS Linear

PRINTED CIRCUIT BOARDS

SW100

L101

C120

JK200

TU200

F204

F205

F206

R777

C773

C202

L740

C118

R252

R253

R254

F202

R256

F203

C116

C208

F201

C751

R275 R274 R273 R230

R759

R607 R606

HP900

Q750

C758

C205

R270

C791

R271

R610

F200

R292

C600

C207

R291

C790

R267

R290

C261

C796

R771

L102

D200

R239

R247

R223

T200

T201

CN700

VR600

L202

C210

F207

C255

FU100

JK100

C100

C101

D180

615BL

R720

C150

CN702

L158

D158

C137

D154

R736

R737

L950

C146

D156

C145

— 3 —

L156

Q111

Q951

R950

L152

D152

L150

D150

Q950

R150

C925

C110

C269

R280

Q210

C214

R281

T950

VR720

JK201

C271

JK600

CN950

C927

+ 11 hidden pages