Casio EV-600B Service manual

EV-600B(NTSC)

(KX-613)

SEPT. 1997

(without price)

R

CONTENTS

SPECIFICATIONS ......................................................................................... 2

BLOCK DIAGRAM ........................................................................................ 3

TROUBLESHOOTING................................................................................... 4

PRINTED CIRCUIT BOARDS ....................................................................... 5

EXPLODED VIEW ......................................................................................... 7

PARTS LIST .................................................................................................. 8

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

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

— 1 —

SPECIFICATIONS

Item Specification

1. Reception channels

2. Power voltage DC 6.0 V

3. Power consumption Approx. 3.8 W

4. Current consumption Approx. 630 mA

5. Battery life (with alkaline batteries) Approx. 2.0 hours

6. Power supply Car adaptor : CA-K65

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

VHF: 2 ~ 13 ch UHF: 14 ~ 69 ch

Batteries : 3 AA size batteries
AC adaptor : AD-K64

Earphone jack : 3.5ø mini
External antenna jack : 3.5ø mini

Audio / Video jack : 3.5ø

8. Screen size 3.0 inches

9. No. of Picture element 75,816 (234 × 324) dots

10. Dimensions 125.0 (W) × 32.0 (D) × 101.2 (H) mm

11. Weight 290 g excepting batteries

AC adaptor : AD-K65,64

12. Options Car adaptor : CA-K65
RF connector : CF-13
Antenna matching device : AS-35S
AV cord : AV-C1

— 2 —

Antenna

Power
Supply

TU200 Q200

1

Tuner

IC501

7

Tuning
Voltage
Generator

VCC2 (5.0 ± 0.02 V)
VCC7 (28.8 ± 2.9 V)
VCC6 (9.1 ± 0.5 V)
VEE1 (–20.0 ± 2.0 V)
VEE2 (–8.1 ± 0.8 V)

BLOCK DIAGRAM

IC200

24

IF Amp.

3

Video
Sound Det.
FM
AFT Circuit
AGC Circuit

5

Chroma
Circuit

6

Display
Control
Auto-Tuning
Control

VR600

Volume
Control

IC300

IC400

IC600

Audio
Amp.

Speaker

LCD

1 — Color tuner: TU200 TEPU5-02

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 M51348AVP

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 IR3P90Y

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

6 — Display control/Auto-tuning control: IC400 LZ93BA5

Controls the display.

7 — Tuning voltage generator: IC501 BA10358F

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

— 3 —

TROUBLESHOOTING

Symptom Cause Solution

No power supply Defective power switch (SW100). Replace.

No picture and
no sound

Picture OK but
no sound

No reception of
VHF or UHF

Defective DC-DC converter (T100). Replace.

Defective tuner (TU200). Replace.

Defective Q200. Replace.

Defective IC200. Replace.

Defective IC300. Replace.

Defective IC400. Replace.

Defective IC501. Replace.

Defective IC200. Replace.

Defective IC600. Replace.

Defective phone jack (JK600). Replace.

Defective tuner (TU200). Replace.

Defective IC501. Replace.

Defective power switch (SW100). Replace.

— 4 —

TOP VIEW

PRINTED CIRCUIT BOARD

Linear

C160

C120

VR301

CN400

IC502

R570 R569

C510

R580

C561

C119

C551

CN500

D501

C556

L505

C432

R555

C315

C116

IC501

R566

L403

C552
D504

D500

R577

R557

R550

C550

C553 R553 R568

JK300

C500

C452
R452

C405

C403

Q503

L205

D503

R578

C901

SW900

CN901

Q900

C911

R950

T201

R951

R905

L951

C312

T200

CN900

C313

C927

C910

L305

C310

T950

C352

F201

C351

L300

L950

R324

C300

C358

F203

SW100

FU100

T100

C100

JK100

C131

C115

CN101

C610

C118

— 5 —

F200

F202

C256

JK200JK600

CN600

BOTTOM VIEW
Linear

CP310

R329

R303

Q300

CP308

L203

Q951 Q950

C951

R305

R242

CP218

R230

R300

R301

C301

R313

R225

C950

C257

IC300

R308

R232

CP213

R321

CP339

C362

IC200

R319

CP324

R312

C952

C249

R904

IC900

C364

C368

R901R902

C373

VR302

R315

C262

R222

C953

R903

C375

CP332

L307

L306

R250

C206

CP334

R208

R442

C458

VR405

R400

CP336

L506

R572
R571

L201

C236

R567

R401

Q501

L200

C430

Q504

D502

R433

R405

L500

IC400

C405

VCC2

R441

C431

C511

R551

VR100

R410

C153

L110

R431

C433

R552

Q500

D402

D406

R411

C150

CP421

R102

C143

VR400

C565

R224

C446

L507

R579

IC100

C447

CP343

Q103

C436

R426

R425

CP452

R562

C445

C558
R585

R565
R564

C250

D114

CP465

CP457

CP408

CP426

C434
R416

R420

CP240

CP602

CP320

D115

C156

C142
R103
C141

CP239

C202

C200

CP237CP238

C231

C230

C271

CP230

C233C232

C152

R639

C630

IC600

R600

C633

D105

CP102

R130

— 6 —

EXPLODED VIEW

1

33

12

13

2

3

32

33

14
15

16

10

33

32

3-1

7

4

33

9

5

8

32

18

6

20

23

24

26

27

21

12

17

17-1

18

19

22

25
33

31

30

28

10-1

29

32

11-1

11

11-2

32

— 7 —

PARTS LIST

LINEAR PCB

Item Code No. Parts Name Specification Applicable Q R

Diodes

D105 2390 2450 DIODE/CHIP SC016-2-TE12RA

D110, D111,D113 7101 1194 DIODE/CHIP MA111-(TX)

D112 2390 1379 DIODE/SCHOTTOKY MA729-(TX)

D114,D406,D500 2390 1470 DIODE/CHIP MA143A-(TX)

D115 2360 2303 DIODE/ZENER MA8091-M(TX)

D200,D405,D501 2390 0455 DIODE/CHIP MA142K-(TX)

D400 2360 1876 DIODE/ZENER MA8100-M(TX)
D402 2390 1358 DIODE/ZENER MA329-(TX)
D403 2360 2296 DIODE/ZENER MA8056-M(TX)
D502 2390 1183 DIODE/CHIP MA142WK-(TX)
D503 2390 1477 DIODE/CHIP MA142WA-(TX)

Fuse

FU100 3632 0322 FUSE NT1-1A

ICs

IC100 2114 3150 IC MB3776APNF-EF
IC200 2114 2471 IC/LINEAR M51348AVP-T1
IC300 2114 3633 IC/LINEAR IR3P90Y-1
IC400 2114 3367 IC LZ93BA5-1
IC402 2114 5766 OP AMP NJM3414AM-T1
IC403 2259 2733 TRANSISTOR ARRAY FMC1A-T148
IC404 2114 2674 OP AMP NJM2107F-TE1
IC500 2114 3374 IC SED3950FOC
IC501 2116 0119 OP AMP BA10358F-T1
IC502 2105 0777 IC/L-MOS TC4S81F-TE85L
IC600 2114 2464 IC/LINEAR NJM2070M-T1
IC900 2114 1736 IC BA10393F-T1

Jacks

JK100 3501 8281 JACK HEC0811-010010

JK200,JK600 3501 5439 JACK HSJ1456-01-210

JK300 3501 3773 JACK HSJ6063-01-410

Transistors

Q103,Q950,Q951 2253 0308 TRANSISTOR/CHIP 2SD1119-R(TX)

Q200 2252 0707 TRANSISTOR/CHIP 2SC4238-(TX)

Q300,Q500,Q504 2252 0637 TRANSISTOR/CHIP 2SC4081-T106R

Q400 2253 0665 TRANSISTOR/CHIP 2SC4182-T2T33,34
Q501 7911 0126 TRANSISTOR/DIGITAL DTC144EUA-T106

Q502,Q503 2259 2625 TRANSISTOR/DIGITAL DTC144TUA-T106

Q900 7911 3045 TRANSISTOR/DIGITAL DTA114YUA-T106

Switches

SW100 3412 0798 SWITCH/SLIDE ESD-11H231
SW900 3412 0840 SWITCH/SLIDE ESD-11H121

Converter

T100 3701 0637 DC-DC CONVERTER CEE98-04
T950 3012 1078 INVERTER TRANS ETJ-11K010AM

Tuner

TU200 1013 5511 TUNER TEPU5-02

Variable resistor

VR301 2775 0077 RESISTOR/SEMI-FIXED H0614D-47KB

EV-600B Common
EV-600B Common
EV-600B Common
EV-600B Common
EV-600B Common
EV-600B Common
EV-600B Common
EV-600B Common
EV-600B Common
EV-600B Common
EV-600B Common

EV-600B Common

EV-600B Common
EV-600B Common
EV-600B Common
EV-600B Common
EV-600B Common
EV-600B Common
EV-600B Common
EV-600B Common
EV-600B Common
EV-600B Common
EV-600B Common
EV-600B Common

EV-600B Common
EV-600B Common
EV-600B Common

EV-600B Common
EV-600B Common
EV-600B Common
EV-600B Common
EV-600B Common
EV-600B Common
EV-600B Common

EV-600B Common
EV-600B Common

EV-600B Common
EV-600B Common

EV-600B Common

EV-600B Common

1C
3C
1C
3C
1C
3C
1C
1C
1C
1C
1C

1B

1C
1C
1C
1C
1C
1C
1C
1C
1C
1C
1C
1C

1C
2C
1C

3C
1C
3C
1C
1C
2C
1C

1C
1C

1B
1B

1C

1C

Notes: Q – Quantity used per unit

R – Rank

— 8 —

KEY PCB

Item Code No. Parts Name Specification Applicable Q R

LED

D120 2370 1260 LED SLC-22VR3F

Switch

SW300,SW301,SW302 3412 1029 SWITCH SKHHAL

Variable resistors

VR303 2765 0623 VOLUME RK09H11T-20KB
VR600 2765 1582 VOLUME RK09H11T-100KB

EV-600B Common

EV-600B Common

EV-600B Common
EV-600B Common

1C

3C

1C
1C

Notes: Q – Quantity used per unit

R – Rank

— 9 —

COMPONENT

Item Code No. Parts Name Specification Applicable Q R

1 6611 5990 CASE/UPPER K110721-2
2 6608 8860 BUTTON/TUNING K311429-1
3 6612 4662 HOOD ASS'Y K311459*3

3-1 6608 8790 SPRING K411897-1

4 6608 8810 FRAME/DISPLAY K211097-1
5 6608 8830 KNOB/LOCK K311427-1
6 6608 8840 SPRING K411896-1
7 6612 4690 LABEL/CHANNEL K411906-2
8 2725 0945 LCD LQ3GE17
9 6608 8880 CABLE/FLAT K411903-1

10 6611 5817 BL ASS'Y K240581*1

10-1 3851 1554 LAMP/FLUORESCENT K-CA613-2CAS

11 6612 4661 PCB ASS'Y/KEY K311458A*2
11-1 6607 5530 INSULATION SEAL K411407-1
11-2 6608 8900 CABLE/FLAT K411902-1

12 6608 8970 CUSHION K411959-1

13 6612 4711 LABEL/DIRECTION K412056A-2

14 6608 8960 HOLDER/BATTERY K211098-1

15 6608 8890 WIRE/SPEAKER K411901-1

16 3831 0847 SPEAKER 23-4F-03

17 6612 4657 PCB ASS'Y/LINEAR K311457A*2
17-1 6608 8980 CABLE/FLAT K411924-1

18 6608 8650 KNOB/SWITCH K311428-1

19 3851 1547 ANTENNA/ROD YH830106

20 6608 8940 SPRING/BATTERY K411905-1

21 6608 8930 SPRING/BATTERY K411904-1

22 6608 8950 WIRE/BATTERY K411900-1

23 6020 7658 SPRING/BATTERY P408A-1

24 6603 8924 KNOB/C K3741D-1

25 6612 4680 CASE/LOWER K110722-3

26 6608 0920 LABEL/CAUTION K411564-2

27 6611 5840 COVER/BATTERY K211101-2

28 6612 4670 PLATE/RATING K411907-3

29 6611 5820 STAND K211102-2

30 6609 9680 CAP/JACK K340237-1

31 6605 0010 SCREW K410096-1

32 5860 0420 SCREW BT3 1.7X4 Ni

33 5860 1022 SCREW BT3 1.7X6 Bk

EV-600B Common
EV-600B Common
EV-600B Common
EV-600B Common
EV-600B Common
EV-600B Common
EV-600B Common
EV-600B Common
EV-600B Common
EV-600B Common
EV-600B Common
EV-600B Common
EV-600B Common
EV-600B Common
EV-600B Common
EV-600B Common
EV-600B Common
EV-600B Common
EV-600B Common
EV-600B Common
EV-600B Common
EV-600B Common
EV-600B Common
EV-600B Common
EV-600B Common
EV-600B Common
EV-600B Common
EV-600B Common
EV-600B Common
EV-600B Common
EV-600B Common
EV-600B Common
EV-600B Common
EV-600B Common
EV-600B Common
EV-600B Common
EV-600B Common
EV-600B Common

1X
1X
1X
1X
1X
1X
1X
1X
1C
1X

1B
1A
1X
1X
1X
2X
1X
1X
1X
1C
1B
1X
2X
1C
1X
1X
1X
1X
1X
1X
1X
1X
1X
1C
2X

1C
10 C
10 C

Notes: Q – Quantity used per unit

R – Rank

— 10 —

LINEAR

5

1

2

10

11

13

14

15

12

8

9

3 4

6

7

16

17

SCHEMATIC DIAGRAMS

Notes:

1. All resistance values are indicated in "ohms" (k=10 ohms, M=10 ohms).

2. All capacitance values are indicated in "µF" (p=10 µF).

3

-6

3. All inductance values are indicated in "µH".

6

— 11 —

BL

Notes:

1. All resistance values are indicated in "ohms" (k=10 ohms, M=10 ohms).

2. All capacitance values are indicated in "µF" (p=10 µF).

3

-6

6

3. All inductance values are indicated in "µH".

— 12 —

0.9 V

WAVEFORMS

63.5 µs

1 Q200 collector

63.5 µs

4 IC200 pin 18

125 µs

2 IC300 pin 20

1.2 V

5 IC300 pins 32, 34, 36

4.4 V

63.5 µs

63.5 µs

6.8 µs

4.0 V

3 IC200 pin 19

4.4 V

6 IC300 pin 21

0.75 V

320 mV

63.5 µs

4.4 V

64 µs

10 V

6.8 µs

7 IC300 pin 39

0 IC400 pin 3

C IC400 pin 22

17 ms

63.5 µs

8 Q103 base

4.4 V

A IC400 pin 4

4.4 V

D IC400 pin 25

63.5 µs

63.5 µs

9 Q103 collector

4.4 V

4.4 V

63.5 µs

B IC400 pin 8

4.4 V

4.4 V

150 ns

E IC400 pin 26

— 13 —

4.4 V

F IC400 pin 27

150 ns

150 ns

2.2 V

G IC400 pin 28

— 14 —

MA1000271A