Sharp CD C621H Service Manual

FOR A COMPLETE DESCRIPTION OF THE OPERATION OF THIS UNIT, PLEASE REFER TO THE OPERATION MANUAL.

SPECIFICATIONS

CD-C621H

General

Power source: AC 230 V, 50 Hz Power consumption: Stand-by; 0.6 W

Power on; 89 W

Dimensions: Width; 270 mm (10-5/8")

Height; 300 mm (11-13/16") Depth; 351 mm (13-13/16")

Weight: 6.2 kg (13.7 lbs.)

Amplifier section

Output power: PMPO; 576 W (Except for UK) MPO; 144 W (72 W + 72 W)

(DIN 45 324) RMS; 80 W (40 W + 40 W) (DIN 45 324) RMS; 66 W (33 W + 33 W) (DIN 45 500)

Output power: RMS; 80 W (40 W + 40 W) (For UK) (10 % T.H.D.)

RMS; 66 W (33 W + 33 W) (0.9 % T.H.D.)

Input terminal: Video/Auxiliary (audio signal);

500 mV/47 kohms

Output terminals: Front speakers; 6 ohms

Surround Speakers; 16 ohms Headphones; 16-50 ohms (recommended; 32 ohms)

Compact disc player section

Type: 3-disc multi-play compact disc

player

Signal readout: Non-contact, 3-beam semi-

conductor laser pickup

D/A Converter: 1-bit D/A converter Frequency response: 20 - 20,000 Hz Dynamic range: 90 dB (1 kHz)

Tuner section

Frequency range: FM; 87.5 - 108 MHz

AM; 522 - 1,620 kHz

CD-C621H

Cassette deck section

Type: Compact cassette tape Frequency response: 50 - 14,000 Hz (Normal tape) Motor: DC motor with electronic

governor x 1

Signal/noise ratio: 55 dB (TAPE 1, playback)

50 dB (TAPE 2, recording/

playback)

Bias and erasure system: AC Tape speed: 4.76 cm/sec. (1-7/8 ips.) Wow and flutter: 0.2 % (DIN 45 511, playback) (Except for UK) Wow and flutter: 0.15 % (WRMS) (For UK) Heads: TAPE-1: Playback x 1

TAPE-2: Record/Playback x 1

Erase x 1

CP-C621H

Front speaker section

Type: 2-way [13 cm (5-1/4") woofer

and 5 cm (2") tweeter]

Maximum input power: 60 W Rated input power: 30 W Impedance: 6 ohms Dimensions: Width; 220 mm (8-11/16")

Height; 300 mm (11-13/16") Depth; 217 mm (8-9/16")

Weight: 2.6 kg (5.7 lbs.)/each

GBOXS0025AWM1

Surround speaker section

Type: 10 cm (4") full range speaker Maximum input power: 20 W Rated input power: 10 W Impedance: 16 ohms Dimensions: Width; 170 mm (6-3/4")

Height; 170 mm (6-3/4") Depth; 88 mm (3-1/2")

Weight: 0.4 kg (0.9 lbs.)/each

Specifications for this model are subject to change without prior notice.

– 3 –

CD-C621H

TROUBLESHOOTING (CD SECTION)

When the CD does not function

When the CD section does not operate When the objective lens of the optical pickup is dirty,this section may not operate.Clean the objective lens,and check the playback operation.When this section does not operate even after the above step is taken,check the following items. Remove the cabinet and follow the troubleshooting instructions. "Track skipping and/or no TOC (Table Of Contents) may be caused by build up of dust other foreign matter on the laser pickup lens. Before attempting any adjustment make certain that the lens is clean. If not, clean it as mentioned below."

Turn the power off. Gently clean the lens with a lens cleaning tissue and a small amount of isopropyl alcohol. Do not touch the lens with the bare hand.

Dust gradually accumulates on the objective lens during use, and it may degrade performance. To avoid this problem, use a cleaning disc designed for CD optical pickup lenses.

HOW TO USE

1. Using the brush in the cleaner cap, apply 1 or 2 drops of the cleaning fluid to the brush on the CD cleaner disc which has the mark next to it.

2. Place the CD cleaner disc onto the CD disc tray with the brush side down, then press the play button.

3. You will hear musicfor about 20 seconds and the CD player will automatically stop. If it continues to turn, press the stop button.

CAUTION

The CD lens cleaner should be effective for 30 - 50 operations, however if the brushes become worn out earlier then please replace the cleaner disc. If the CD cleaner brushes become very wet then wipe off any excess fluid with a soft cloth. Do not drink the cleaner fluid or allow it to come in contact with the eyes. in the event of this happening then drink and / or rinse with clean water and seek medical advice. The CD cleaner disc must not be used on car CD player or on computer CD ROM drives. All rights reserved. Unauthorized duplicating, broadcasting and renting product is prohibited by law.

Cleaner Liquid

Cleaning Disc PARTS CODE: UDSKA0004AFZZ

Figure 38

– 38 –

• When the turntable fails to stop.

5V

Is from 5 V till 2.5V down pulse (approx. 300 ms)

2.5V 0V

input into the IC701 pin 21 when the turntable is rotating?

Yes

Is there following voltage input on the IC701 pin 21 in the specific state? When the CD mechanism is moved up: 0V

In other states: 4.3V

Yes

Check IC2 pin26 Q91 and Q93 and the periphery.

Yes

IC701 defective.

No

CD-C621H

Check the SWM3 and the wiring from the IC701 pin 21 to the SWM3.

Check the MECHA UP SW and the wiring from the IC701 pin 21 to the MECHA UP SW.

• When turntable fails to move.

Is there following voltage input on the IC701 pin 21 in the specific state? When the CD mechanism is moved up: 0V In other states: 4.3V

Yes

Is L output from the IC2 pin 26 during SEC when the disc skip switch is pressed?

Yes

Is 4V output from the Q91 emitter during operation stated above?

Yes

Check turntable motor and turntable mechanism.

No

Check the MECHA UP SW and the wiring from the IC701 pin 21 to the MECHA UP SW.

Check the wiring of IC2 pin 26 and Q93 pin 2.

OK

IC2 defective.

Check Q91, Q93 and the periphery.

– 39 –

CD-C621H

• When the CD tray fails to open or close.

Is there following voltage input in specific state of IC701 pin 19?

Open state: 0V Close state: 0V Intermediate state between open state and close state: 4.3V

Yes

Is H output to IC2 pin 24 or 25 for 7 seconds when the OPEN/ CLOSE key is pressed?IC91 is defective. Replace it.

Yes

Is 4V output between IC91 pins 3 and 7 during operation stated above?

Yes

Check the loading motor (M1) and the loading mechanism.

• The CD function will not work.

The CD operating keys don't work.

No

Check the OPEN CLOSE SW and the wiring from the IC701 pin 19 to the OPEN CLOSE SW.

Check the wiring of the IC2 pins 24 and 25, IC91 pins 1 and 3.

OK

IC2 defective.

Check the periphery of IC91.

OK

IC91 defective.

Yes

Check the CD, DSP, power supply, and 16.93 MHz clock, and reset terminal.

Yes

Check the waveform of SCK, SO (DATA) and SI (COMM).

Yes

See if the pick-up is in the pick-up in PICKUP IN SW position.

Yes

If the items mentioned above are OK, check the main microcomputer IC701.

• The CD operating keys work.

Check the Focus - HF system.

Playback can be performed without a disc.

Yes

Does the pick-up move up and down twice?

No

0.5s

0.50 V IC1 16 FD

0.5s

0.50 V IC1 7 TE

Yes

Focus search OK

Figure 40

Focus search is performed two times when play operation is done without disc.

1 2

Does the output waveform of IC1(16)(FD) match that shown in Fig. 40?

No

Check the IC1(50)(CLK) line, 4MHz. Check the microcomputer data on pins (51)(CL), (52)(DAT) and (53)CE.

Yes

Check the area around IC5-CNP2.

– 40 –

• Playback can only be performed when a disc is loaded.

CD-C621H

Is the Focus servo active? (Can you hear it working?)

Yes

Does the DRF signal change from "L" to "H"?

Yes

Is HF waveform normal (see the Fig.41-1, 2)?

Yes

Check the tracking system.

HF

1.0V/DIV

0.5µsec/DIV(DC) (When playing back the disc)

Figure 41-1

• Check the tracking system.

No

0.5s

1.00 V IC1 16 FD

0.5s

10.0 V IC2 13 CLV+

0.5s

10.0 V IC1 54 DRF

0.5s

2.00 V IC1 7 TE

Check the laser diode driver. Check the area around IC1(16) - (21) (focus servo circuit).

If the disc is not turning, the DRF should not change to "H".

Level is abnormal.

Waveform is unstable.

Yes

Figure 41-2

Check the spin system.

Check the periphery of IC1 pins 41 and 42.

Check the spin system.

Waveform in case of normal play-back

2 1

3 4

Check waveform of IC1 pin 7 (TE).

The waveform shown in Fig.41-3 appears, and nodisc state appears soon.

Play is possible in TEST mode.

Data cannot be read.

5ms

1.00 V IC1 7 TE

5 ms

5.0 V IC1 54 DRF

Yes

Tracking servo is

Yes

inoperative.

Although IL is possible, play is impossible.

Yes

Check the periphery of IC 1

Yes

Check the VCO-PLL system.

pin 8 to pin 15, and IC 5 to CNP2.

Normal jump is impeded, and the program top cannot be reached.

Check the periphery

Yes

of IC 1 pin 14.

4

3

Figure 41-3

– 41 –

CD-C621H

• Checking the spin system.

Play operation is performed without disc.

Yes

The turntable rotates a little.

No

The turntable fails to rotate or rotates at high speed.

• Checking the VCO-PLL system

Play operation is performed when disc exits.

Yes

Although HF waveform is normal, TOC data cannot be read.

Stop --> Play

As VCO frequency is locked at

0.5s

1.00 V IC2 3 PDO

0.5s

1.00 V IC2 16 FD

4.32 M Hz, voltage of PDO rises and stabili- zes.

2

Yes

The spin driver circuit is normal.

Check the periphery of IC1 pins 23 to 27, pin 39, and pin 40, IC2 pin 12 and pin 13, IC5 to CNP3.

Check PDO waveform (Fig. 42).

Abnormal

Check the IC1 pins 43 and 44, IC2 pins 3, 5, 7, 10, and 11.

3

Figure 42

• Although HF waveform is normal and the time indication is normal, no sound is emitted.

Check IC 2 pin 48 (EFLG).

Yes

Check IC2 pins 37, 40.

Abnomal

Check IC 401 and POWER AMP IC 801.

No

Usually, the number of pulses of flawless disc is 100 pulses/sec or less.

– 42 –

CD-C621H

VOLTAGE

PIN NO.

10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50

51 52 53 54 55 56 57 58 59 60 61 62 63 64

1 2 3 4 5 6 7 8 9

IC1

VOLTAGE

2.5V

2.5V 0V

2.5V

2.3V

2.3V 0V 0V

5.0V

5.0V 0V 0V

1.6V

2.4V

2.4V 0V

2.5V

2.5V 0V 0V

2.4V

4.6V

4.6V 0V 0V

5.0V

2.5V

1.0V

2.2V

4.2V 0V

5.0V

PIN NO.

10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64

1 2 3 4 5 6 7 8 9

IC2

VOLTAGE

0V 0V 0V 0V

1.9V

5.0V 0V 0V

2.5V

2.4V 0V 0V 0V

5.0V 0V 0V

5.0V

5.0V 0V 0V

2.5V 0V

5.0V 0V 0V 0V 0V 0V 0V

5.0V

2.5V 0V 0V 0V

5.0V

4.6V

1.9V 0V 0V

1.9V

4.6V

5.0V

2.1V

2.1V 0V

0.1V

2.3V 0V

2.5V 0V

2.5V 0V 0V 0V

4.6V

4.7V 0V

2.3V

2.3V 0V 0V 0V

PIN NO.

10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42

PIN NO.

10 11 12 13 14 15 16 17 18 19 20 21 22 23 24

1 2 3 4 5 6 7 8 9

IC3

VOLTAGE

2.5V

2.6V

2.9V

3.3V

3.3V 0V 0V 0V 0V 0V 0V 0V

3.3V

3.0V

7.2V

5.0V

2.5V 0V 0V 0V

7.2V

2.5V

3.3V

11.2V 0V 0V 0V 0V 0V 0V 0V

5.3V

3.3V

7.2V

0.1V

IC101

VOLTAGE

0V (0V) 0V (0V)

0.5V (0.5V)

4.3V (4.3V)

0.2V (0.3V)

1.3V (1.3V) 0V (0V)

0.6V (0.6V)

4.1V (4.1V)

4.0V (4.0V) 0V (0V) 0V (0V)

8.1V (8.1V)

4.8V (4.8V) 0V (0V)

4.1V (4.1V)

0.6V (0.6V) 0V (0V)

2.5V (2.6V)

0.2V (0.3V)

4.3V (4.3V)

0.5V (0.5V) 0V (0V) 0V (0V)

PIN NO.

1 2 3 4 5 6 7 8

PIN NO.

1 2 3 4 5 6 7 8

PIN NO.

1 2 3 4 5 6 7 8

PIN NO.

1 2 3 4 5 6 7 8

9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24

FE301

VOLTAGE

0V (0V) 0V (0V)

2.6V (0V) 2V (1.1V)

8.5V (0V) 0V (0V) 0V (0V) 0V (0V)

IC562

VOLTAGE

0.12V

0.1V

0.13V –11.2V

0.1V

6.2V

IC563

VOLTAGE

0.2V

0.2V –9.8V

0.2V

6.2V

ICT21

VOLTAGE

2.6V(0.3V)

2.6V(0V)

5.1V(0V) 0V(0V)

2.6V(0V)

2.6V(0.2V) 0V(0V) 0V(0V) 0V(0.3V)

0.1V(0.3V)

2.6V(0V)

2.5V(0V)

5.1V(0V) 0V(0V) 0V(0.4V) 0V(0.3V)

0.2V(0.3V)

0.2V(0.4V)

0.1V(4.5V)

4.1V(4.1V) 0V(0V)

0.5V(0.5V) 0V(0V)

PIN NO.

10 11 12 13 14 15 16 17 18 19 20 21 22

PIN NO.

10 11 12 13 14 15 16 17 18 19 20

PIN NO.

1 2 3 4 5 6 7 8 9

1 2 3

IC302

VOLTAGE

2.6V (2.6V) 0V (0V) 0V (0.5V) 0V (0V)

4.1V (4.1V)

4.7V (4.7V)

0.2V (11.8V)

0.5V (0.1V)

0.2V (0.2V) 0V (0V)

5.1V (5.1V)

2.5V (2.5V)

5.1V (5.1V) 0V (0V) 0V (2.5V)

2.5V (0V)

5.1V (5.1V)

0.9V (0.9V)

1.9V (1.1V) 0V (0V)

2.5V (2.5V)

IC601

VOLTAGE

0V 0V 0V 0V 0V 0V 0V 0V 0V

2.7V

0.2V –2.7V 0V 0V 0V 0V 0V 0V 0V 0V

IC704

VOLTAGE

5.0V 0V

5.0V

PIN NO.

10 11 12 13 14 15 16 17 18 19 20 21 22 23 24

PIN NO.

10 11 12 13 14 15

PIN NO.

10 11 12 13 14 15 16 17 18

1 2 3 4 5 6 7 8 9

IC303

VOLTAGE

2V (2V) 5V (5V) 2V (2V) 0V (0V) 5V (5V) 5V (5V)

5.1V (5.1V)

2.9V (3.5V)

5.1V (5.1V)

0.1V (0.1V)

3.9V (1.2V)

2.2V (2.2V)

1.1V (1.1V)

1.1V (1.1V) 2V (2V)

0.2V (0.1V)

2.0V (0.8V) 0V (1.8V)

0.4V (0.8V)

2.6V (2V)

5.1V (5.1V)

3.6V (3.6V)

IC901

VOLTAGE

–30.4V –30.4V

30.5V 0V 0V 0V 0V –29.4V

29.4V –0.1V –0.1V –28.0V –0.1V

0.1V 0V

IC703

VOLTAGE

0V 0V 0V 0V

0.8V

0.9V

0.8V

0.7V 0V 0V 0V

9.8V

9.8V 0V

5.0V

VOLTAGE

NO. NO.

4.8V

1

4.8V

2

4.8V

3

0V

4

0V

5

0V

6

0V

7

0V

8

0V

9

4.0V

10

2.3V

11

2.3V

12

0V

13

4.9V

14

0V

15

4.9V

16

0V

17

4.8V

18

0V

19

4.8V

20

4.8V

21

0V

22

0V

23

0V

24

0V

25

0V

26

0V

27

0V

28

0V

29

0V

30

5.0V

31

5.0V

32

5.0V

33

4.8V

34

5.0V

35

4.7V

36

5.0V

37

4.8V

38

4.9V

39

0V

40

4.7V

41

0V

42

3.6V

43

11.3V

44

11.3V

45

4.8V

46

4.7V

47

4.7V

48

4.7V

49

0V

50

51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99

100

Q821

IC701

PIN NO.

1 2 3

VOLTAGE

11.3V

6.2V

1.2V

PIN NO.

Q823

PIN NO.

1 2 3

VOLTAGE

12V

19.6V

11.3V

PIN NO.

VOLTAGE

Q822

VOLTAGE

1 2 3

Q824

VOLTAGE

1 2 3

4.8V

4.8V 0V

4.8V 0V 0V 0V

4.7V

4.8V

4.7V 0V

4.8V

5.0V

5.0V –28V –28V –28V –28V –28V –28V –28V –28V –20V –28V –22.6V –25.4V –22.6V –27.8V –25.4V –25.3V –25.3V –22.5V –25.3V –22.7V –27.3V –22.7V –17.4V –20V –25.4V –25.4V –25.4V –25.4V –25.4V –25.4V –25.4V –25.4V –25.4V –25.4V –25.4V

19.6V

1.3V

7.3V

19.6V 0V

12.0V

– 36 –

1

PLAY

TCD-712

5s 100mV SLD

1

2

5ms

0.50 V IC1 20 F.E

5ms

5.0 V IC1 54 DRF

WAVEFORMS OF CD CIRCUIT

STOP PLAY

FOCUS SERCH

0.5ms

6

10.0 V JP+

0.5ms

7

10.0 V JP-

0.5ms

8

0.50 V

3 1

JP

0.5ms

9

1.00 V TE

CD-C621H

0.5ms

3

1.00 V HF

0.5ms

4

5.0 V HFL

0.5ms

5

5.0 V TES

0.5ms

1.00 V

3

HF

0.5ms

4

5.0 V HFL

0.5ms

5

5.0 V TES

50ms

6

10.0 V JP+

50ms

7

10.0 V JP-

50ms

8

0.50 V JP

50ms

9

1.00 V TE

CUE

1 2

3

REVIEW

1 2

3

CUE

10

11

10

11

12

20ms

1.00 V SPO

20ms

2.00 V CLV+

50ms

1.00 V SPO

50ms

2.00 V CLV+

PLAY

NORMAL DISC TN0=01

PLAY

TCD-712 (140mm) TN0=01

0.5ms

10.0 V

6

JP+

0.5ms

10.0 V

7

JP-

0.5ms

0.50 V

8

JP

0.5ms

9

1.00 V TE

50ms

10.0 V

6

JP+ 50ms

10.0 V

7

JP50ms

8

0.50 V JP

50ms

9

1.00 V TE

REVIEW

12

0.5s 100mV SLD

1

– 37 –

CD-C621H

47P

C129 470P

C131

C130

C132

2

0

U

A

B

P27 12 - C

TO CD SERVO PWB

C

D

E

PLAYBACK HEAD R-CH

L-CH

F

PLAYBACK HEAD

ERASE HEAD

R-CH

L-CH

G

CNS11

CNP11

TAPE1

TAPE2

RECORD/

1 2 3 4 5 6

R-CH A_GND L-CH

CD_GND +7V

+12V

P22 1 - E

TO POWER SECTION

CNS101

TAPE1_R

1

A_GND

2 3

TAPE1_L

CNS102

M_GND

1

ERASE

2

TAPE2_R2

3

A_GND

4

TAPE2_R1

5

TAPE2_L1

6

TAPE2_L2

7

BI601

1 2 3 4 5 6

12

13

1 2

3

10

2

14

1 2 3

CNP102 CNP101

1 2 3 4 5 6 7

+B

CD_+B

CD_GND

L

A_GND R A_12V

A_GND M_GND

+B

FM SIGNAL

R635

330

R636 330

Q109 ~ Q111: SWITCHING

C102

0.001 C101

0.001

C106 180P

C105 180P

Q603 2SC3331

R615

2.7K

Q604

R616

2.7K

2SC3331

PLAYBACK SIGNAL

R621

C635

10K

0.0047

C625

0.001

R645

100K

R619

2.2K R620

2.2K

C626

0.001

R622 10K

0V

R646 100K

C627

R625

22/25

22K

C109

0.047 R113

10K

9.3V Q109

2SA1318

9.3V

0V

0.7V

Q104

R104

2.2K

0V

2SC2389 SE

R106

3.3K

0.7V

Q106

2SC2389 SE

Q105

2SC2389 SE

0V

0.7V

R105

3.3K

0V

R103

2.2K

Q103

0V

2SC2389 SE

Q103 ~ Q108: SWITCHING

Q601 2SC3331

Q602

2SC3331

C634

0.0047

R114 10K

R115

4.7K

8.6V

0.7V

C623

0.001

C624

0.001

C629 22/25

R109

R107

R613 10K

R617

2.2K

R108

R110

4.7K

0V

47K

4.7K

C621

0.1/50

R618

2.2K

Q110

KRC104 M

0V

2

1

0V

2

KRC104 M

R112 10K

R102 1K

R101 1K

0V

Q108

0V

Q107

2SC3331

C603

4.7/50

R611 330

R614 10K

R628

22K

3.4V 3

3

3.4V

Q111

C108 0.001

2SC3331

C107

0.001

C601

4.7/50

C605

4.7/50

C622

0.1/50

R111 10K

RECORD SIGNAL

R639 47K

R607 1.5K R605 1.5K R603 1.5K R601 1.5K C611 0.033

C615

C613

0.22

C617

2.2K

R609

10/50

C619

0.022

R155 150

R173

5.6K

C153 100/16

R171 220K

Q113

2SC3331

R169

680

R120

56

C118

0.033 R122

100K C116 47/25

L108

R118

2.2mH

1K

C112 330P

C111 330P

R117

C113

1K

330P

C115 47/25

R121 100K C117

0.033 R119

56

1 2 3 4 5 6

IC601

7 8 9

10 11

R623

5.6K ZD601 MTZJ2.4B

R629 560(1/2W)

Q114

R170

C155

3.3/50

680

C120 560P

R124

3.9K

C114 330P

222324

21

–

112K

+

Hich=T1

+

112K

–

4 3 2 1

L107

2.2mH

R123

3.9K

C119 560P

R131 33K

20

R608 1.5K

19

R606 1.5K

18

R604 1.5K

17

R602 1.5K

16

C612 0.033

15

C614 0.22

14

M62439SP

13 12

AUDIO PROCESSOR

R610 10K

15K

R612

R175 1K

R174

5.6K

R172 220K

2SC3331

C154

R134

1920

6

0.022

R135

8.2K

R136

68K

C128

8.2K

R138

3.3/50

R137

47/16

6.8K

18

7

6.8K

R132

R126

5.6K

C122 1/50

C121 1/50

R125

5.6K

C156

33K

5

3.3/50

C127

C616

M

H

• NOTES ON SCHEMATIC DIAGRAM can be found on page 16.

1

23456

Figure 20 SCHEMATIC DIAGRAM (1/9)

– 20 –

CD-C621H

IC601

2

3

9K

3

9K

SIGNAL

20

R608 1.5K

19

R606 1.5K

18

R604 1.5K

17

R602 1.5K

16

C612 0.033

15

C614 0.22

14

M62439SP

13 12 11

AUDIO PROCESSOR

R610 10K

15K

C156

33K

5

3.3/50

C127

R134

1920

6

0.022

R135

8.2K

R612

R136

68K

C128

8.2K

3.3/50

R623

5.6K

.4B

W)

R175 1K

R174

5.6K

R172 220K

2SC3331

70

0

R132

P

R126

5.6K

.

C122 1/50

21 16 K

K

4

C121 1/50

.

R125

5.6K

9

R131 33K

C154

47/16

R138

6.8K

18

R137

7

6.8K

C616

MUTING

2SC3331

0V

CD SIGNAL

C602

4.7/50

C606

4.7/50

C604

4.7/50

4.7P

C618

C620

0.022

10/50

Q122

0.7V

R142

56

C130

470P

R140 560

C136

C132

0.001

C134 22/25

17

– +

Hich=CHROME

+ –

8

C133 22/25

C131

0.001 R141

C135 0.068

R139 560

C129 470P

R156 220K

R154 10K

0.068

56K 56K

56

R626 2.2K

–B

(1/2W)

R630

560

R624 330

ZD602

MTZJ2.4B

–B

R146

10K

C140

0.0033

C142

1/50

15 14 13

ALC 10 11 12

9

C141 1/50

R145 10K

C139 0.0033

R642 47K

R640 47K

C628

0.22

REC_R

R153 10K

0.7V Q121 2SC3331

MUTING

C146

C145

22/25

RIPPLE

Nor/CrO2

ALC

GND

220/10

Vcc

R641 47K

C653

R653

220K R638 220K

R655

5.6K

R637 220K

REC_L

0V

R157 220K

0V

R158

220

Q124

SWITCHING

2SA1015 GR

L103

IC101

AN7345K

100µH

PLAYBACK AND

R167 100K

RECORD/PLAYBACK AMP.

R166 47K

C654

4.7/50

Q651 2SC3331

11.7V

0V

R160 150

BIAS OSC

KTC3203 Y

C150

0.0039

C151

0.027 (ML)

R164

4.7K

R651

2.2K C651

3.3/50

R162 47K

11.6V

Q128

R656

330µH

C652 47/16

1K

0V

1

2

Q126

KRC104 M

BIAS

0V

R168 12

L104

+B

R633

C631 390P

C632 390P

22K

R634 22K

D601

1SS133

D602

1SS133

D_GND

A_12V A_GND

TUN_L

TUN_R

TUN_SM

CLK

A_GND

TUN_SM

VF1

-VP VF2

HI_CUT S_MUTE SP_DET SP_RLY

T_T1 T2

T_BIAS

REC/PLAY

D_GND

M_12V

SPA_SIG

–15V

+5V

M_12V

–15V VF1 –VF VF2

+5V SP_DET SP_RLY

C630

0.022

CLK

DO

CE

DI

DO CE

DI

SPN_P

CNP701

R631

22K R632

22K

R652

220K

R654

5.6K

Q650 2SC3331

R652

2.2K C650

3.3/50

–B

+B

3

0V

+B

C152 47/25

+B

–B

1 2 3 4 5 6 7 8 9

10

1 2 3 4 5 6 7 8 9

10 11 12 13 14 15 16 17 18 19 20 21 22

7 6

17 15 16

8 4 5

L-CH

JK601 VIDEO IN

R-CH

CNS303

P22 1 - E

TO POWER SECTION

CNP303

P28 6 - C

TO TUNER PWB

CNS701

P24 1 - D

TO DISPLAY PWB

MAIN PWB-A1(1/2)

7

8 9 10 11 12

Figure 21 SCHEMATIC DIAGRAM (2/9)

– 21 –

CD-C621H

F832

T500mA

L 250V

D821

1SS133

D820

1SS133

C909

2200/50

R830

680 (2W)

C910

2200/50

C918

47/50

C936

0.1

(ML)

R934

4.7

D904

1SS133

D903

1SS133

D906 1SS133

Q907

2SC3331

Q906

2SC3331

R928

1K

R930

10K

Q904

2SC3331

R936

56K

C938 47/50

R925

0.1(1W)

D833

1SS133

D832

1SS133

C828

0.1

(ML)

C827

0.1

(ML)

C833

0.1

(ML)

Q822

KIA7806P 31

Q821

AN78L05

1

Q824 KIA7812P 3 1

R827

22K

C826

47/25

C829

3300/25

R825

33

R832

22K

C825

22/25

C824

0.047(ML)

IC901

STK4074B

POWER AMP.

Q823

KTD2058 Y

C904

10/50

R912 100(1/4W)

C907

10/50

R916

1K

R917 56K

C916

15P

C915 120P

C917 47/50

R918

680

R921

22K

R922

680

R923

56K

C924

15P

R924

1K

C923 120P

D803

1N4004S

D806 1N4004S

D805 1N4004S

D804

1N4004S

ZD80 MTZJ

C804

47/50

Q801

KTA1274

R806

22K

1234

5

6

7

8

9

10

11

12 13

14

15

Q905

2SC3331

R931

10K

R929

1K

C921

0.022

R938

56K

R939

56K

C920

0.022

R926

0.1 (1W)

R803

47K

C802

100/35

ZD801

MTZJ6.2A

C803

47/50

R802

10

2

C830

47/25

C821

0.047(ML)

R837

10K

C832

0.1(ML)

C831

47/25

2

C911 100/50

C912 100/50

R913

100 (1/4W)

Fusible

R966

22K

C905

220P

C902

220P

R903

100K

R901

100K

C903

1/50

C901

1/50

R904

68K

R902

68K

R905

1K

R907

1K

1

2

3

4 5

6

7

8

9

10

11

12

13

14 15 16 17

2

3

CNP8

R801

12K

NC

A_GND

D_GND

M_12V

–15V

SP_RLY

A_GND

L

R

SP_DET

CD_GND M_GND

A_12V

+5V

–VF VF2 VF1

CD_+B

(2Ch)

+

+ –

–

–Vcc

+Vcc

Ch1

Ch2

Ch1

Ch2

Out

+B1

+B2

+B

–B

U

AC _

+

CNS806

P25 12 - E

TO DISPLAY PWB

MAIN PWB-A1(2/2)

FM SIGNAL

P20 2 - D, P21 12 - G

TO MAIN SECTION

4

3

2

1

D801 TS6B04GM

Fusible

VOLTAGE

REGULATO

VOLTAGE

REGULATOR

VOLTAGE

REGULATOR

VOLTAGE

REGULATOR

C934

0.1

(ML)

A

B

C

D

E

F

G

H

• NOTES ON SCHEMATIC DIAGRAM can be found on page 16.

1

23456

Figure 22 SCHEMATIC DIAGRAM (3/9)

– 22 –

CD-C621H

1K

R960

150

+B

D960

R967

150

+B

C950

0.001

+B

T801

POWER TRANSFORMER

Q908 KRC107 M

T4A L 250V

0.22

T4A L 250V

0.22

T2A L 250V

1N4004S

C813

100/50

D808

1N4004S

R946

330(1/2W)

RL901

2

F802

F803

F805

D907 1SS133

1

3

R941

R944

6.8

C940

0.022 C942

0.022

4.7K

CNP802

4.7K

R942

L902

0.29µH

R950

6.8

C944

0.022

C946

0.022

R949

330(1/2W)

1 2 3 4 5 6 7 8

L901

0.29µH

R943

6.8

C941

0.022 C943

0.022

CNS802 1 2 3 4 5 6 7 8

R945

6.8

C945

0.022 C947

0.022

14

15

23

0P

15P

C924

56K

R938

R939

C934

0.1

(ML)

R936

56K

D801 TS6B04GM

D806 1N4004S

D805 1N4004S

C803

ZD801

R802

MTZJ6.2A

KTA1274 Y

VOLTAGE

REGULATOR

C936

0.1

(ML)

R934

4.7

ZD802 MTZJ30B

47/50

10

Q801

Q906

2SC3331

C938

47/50

+B

1N4004S

2

1N4004S

47K

R803

R801

12K

D803

D804

C802

100/35

C935

(ML)

C937

(ML) R937

C804

47/50

R806

0.1

4.7

C805

C806

2.2K

+B

C807

C808

–B

0.22

D807

C812 100/50

C811 220/50

D809

1N4004S

1SS133

15K

R961

C960

C951

C953

0.001

T.F

10/50

0.001

R951

C961

47/50

100/50

68

R963

1K

R962 68K

WTM801

C954

C956

100/50

R952

68

C952

0.001

C962

CNS804

CNP804

2

11

Q960

2SC3331

FW801 1 2 3 4 5

5

8

SP_REAR_L-CH SP_REAR_R-CH

7

SP_REAR_L-CH_GND

6

SP_REAR_R-CH_GND

5

SP_L-CH

4

SP_R-CH

3

SP_L-CH_GND

2

SP_R-CH_GND

1

SO901

SPEAKER

TERMINAL

D961

1SS133

270P

1

2

CNP801

CNS801

M901

M

FAN MOTOR

HEADPHONES PWB-A5

1

L970

2.2mH

D962

RL801

D802

1SS133

C971

C970

100P

6 OHMS/CH

TO TAPE MECHANISM CHASSIS

1SS133

L801

SO801

AC INPUT

JK970

HEADPHONES

16 OHMS/CH

C801

0.0047

AC POWER SUPPLY CORD AC 230V/50Hz

1

AC _RLY_CON

2 3

CNS806

4

P25 12 - E

CNP806

TO DISPLAY PWB

7

+B

+5V

UN_SW_5V

D_GND

D818

Q802

KRC107 M

2

1

3

1SS133

D815

C815

1SS133

1000/6.3

C814

10/16

R808

220

AN78L05

3

Q803

2

D816

1SS133

1

D810

1N4004S

D811

1N4004S

C810

470/35

D813

1N4004S

D812

1N4004S

T802

C809

0.047(ML)

POWER TRANSFORMER

+B

POWER PWB-A2

When Servicing, pay attention as the area enclosed by this line ( ) is directly connected with AC main voltage.

8 9 10 11 12

Figure 23 SCHEMATIC DIAGRAM (4/9)

– 23 –

CD-C621H

R750

O

R

5

E E

G5

C

G05

3

9

A

B

C

D

E

F

G

TO MAIN PWB

M

MM1

TAPE MOTOR

SWM3 F.P.

SWM4 F.A.S

SOLM1

SOLENOID

SWM5 CAM

P21 12 - F

CNP701

TAPE MECHANISM PWB-F

FWM1

2+

–

2

13

CNPM2

FWM2

VLOAD (–VP)

PHM1

4

RUN PALS SENSOR

CLK

A_GND

TUN_SM

VF1

VF2

SPN_P

HI_CUT

S.MUTE

SP_DET

SP_RLY

T_T1 T2

T_BIAS

REC/PLAY

D_GND 12V M

SPA SIG

–15V

DISPLAY PWB-A3

R721 100K

Q705 2SC3331

1K

R706

CNS701

1

DO

2

CE

3 4

DI

5

6

7 8 9

10 11 12 13 14 15 16 17 18 19 20 21

5V

22

CNPM1

MOTOR

1

2

3

GND

4

+12V

5

T2 RUN

6

7

FPA

8

9

T1 RUN

10

SOLENOID

11

CAM SW

12

CNSM1

+B

–B

+B

–B

+B

R722 100K

Q706 2SC3331

1K

R707

R551

10K R556

R553

1SS133

R560 470K

33K R558

68K

12K

D551

R555 56K

Q707 2SC3331

R708

R562 390K

C551 270P

C557 270P

C559

0.0027

C553

0.0027

C555

0.0068 C556

0.0068 R567 270K

R561 15K

1K

C561

0.022

R723 100K

C562

0.022 R573 560K

R568 220K

R564

R566

R570 220K

390K

2.2M

R572

2.2M

R716 33

R717

10K

2 3

5 6

IC563

OPE AMP.

KIA4558P

2 3

5 6

IC562

KIA4558P

OPE AMP.

C720 47/50

R719

R575

FL701

FL DISPLAY

F F F

P21

P22

1 2 3 4

C702 1/50

R724

R578 100K

R579 100K

SPEANA1

0.022

SPEANA3

SPEANA2

R580

100K

10K

R726

+B

R758

1.2K

+B

10K

R720

–B

R574

330

D554

4

1SS133

1

C566

2.2/50 D555

8

1SS133

7

C567

2.2/50

–B

D556

4

1SS133

1

C568

2.2/50

8 7

C563

0.022

C569

ZD551 MTZJ6.2C

10K

R727

10K

6

5

R760 10K

12V

KTA1271 Y

12V

10K

R759

P20

7

+B

Q703

P18

P19

8

9

12V

Q702 KTA1273 Y

0V

12V

P17

10

D716 1SS133

P15

P16

11

R702 1K R703 1K

R712 22K R713 1K R714 1K

R715 1K

P10

P11

P12

P13

P14

12 13 14

15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31

80 79 78 77 76 75 74 73 72 71 70 69 68 67

R701

66

1K

65 64 63 62

R705 1K

61 60

R709

59

1K

58 57 56 55 54 53 52 51

+B

C705 47/25

+B

GND

MOTOR

+12V

12

3

P07

P08

P09

P9

VLOAD P11 P12 P13 P14 P15 P16 P17 P18 P19/DIST1 P20/DIST2 P21/DIST3 P22/DIST4 NC DISTOUT SPN_P SP_DET SPRLY

HI-CUT

S MUTE

DIST0 T_T1T2 T-BIAS

FPA

TIFAS

R730 1K

R731 1K

T2 RUN

T1FAS

FPA

4

6 5

P05

P06

CAM SW

R732 1K

SOLENOID

7

P01

P02

P03

P04

P1

P2P3P4P5P6P7P8

80

P10

IX0281AW

SYSTEM CONTR

MICROCOMPUTE

DIST0 L:DEMOSTART DIST0 H:ECOSTART

52

REC/PLAY

51

AC RLY-CON

U/D SW

TIMER LED

VDD

T_MOT

T_SOL

R734 2.2K

R733 2.2K

R736 1K

R735 1.8K

LED722

SLI342UCJ

10K

R747

+B

R752

10K

R753 10K

R754 10K

+B

CAM SW

BI701

8

G11

G10

P10

P11

IC701

DNO SW

VSS

R737 1K

10K

R748

G08

G09

9493929190898887868584838281

G9

VDD

1

30

T2 RUN

REMOCON

SYS STOP

3738394041424344454647484950

R738 1K

R739 10K

R740 1K

R749

10K

+B

G06

G07

95

G6G7G8

C

O/C SW

PUIN SW

36

R741 1K

R75 10K R756 10K R757 10K

L

H

• NOTES ON SCHEMATIC DIAGRAM can be found on page 16.

1

23456

Figure 24 SCHEMATIC DIAGRAM (5/9)

– 24 –

CD-C621H

R736

1K

U/D

SW

P1

P01

G11

G10

52627282930313233343536 373839

9

P10

P11

IC701 X0281AW EM CONTROL

OCOMPUTER

L:DEMOSTART H:ECOSTART

Y

CON

DNO SW

VSS

2

R737 1K

R748

R753 10K

754

0K

G08

G09

VDD

1

30

T2 RUN

REMOCON

SYS STOP

R738 1K

R739 10K

10K

R749

+B

9493929190

O/C SW

3738394041

R740 1K

10K

R755 10K R756 10K R757 10K

+B

G05

G06

G07

CD DSP RWC

CD DSP WRQ

CD DSP COIN

CD DSP CQCK

CD DSP RES

PUIN SW

R741 1K

R750

10K

+B

LED716 SLI342YCJ

LED717 SLI342YCJ

G02

G03

G04

99

98979695

CLK

LCK1

RESET

VPP

VDD

PCCL

SQOUT

FRF(DRF)

SLD+ SLD–

AVSS SPEANA3 SPEANA2 SPEANA1

KEYIN1

KEYIN2

AVDD

33343536

R742 1K

R743 1K

G01

100

G1G2G3G4G5G6G7G8G9

DO

DI

CE

X2 X1

KEYIN3

3132

R751

RD01 820

SW701

POWER

1 2 3 4 5 6 7 8 9

10 11

XL701

12

4.19 MHz

13 14 15 16 17 18 19 20

21

22

23 24 25 26

27

28

29

R761 1K

30

1K

R744

3.3K

F F F

C706 1/50

R778 1K R777 1K R776 1K R775 1K

R774 1K

R772 1K

R771 1K

R769 1K R768 1K R767 1K R766 1K R765 1K R764 1K R763 1K R762 1K

R745

1K

C708

18P

R770 1K

RD10 820

SW710

REV

SW702

STATION

STOP PLAY

C707

15P

RD02

1.2K

RD21 820

SW722

FF

RD11

1.2K

SW711

REC

PAUSE

SW703 CLOCK

C709

0.022

+B

C710 220/10

+B

L702

+B

100µH

C723

0.1/50

RD22

RD23

1.2K

1.5K

SW724

SW723

TUNINGUPTUNING

DOWN

RD12

RD13

1.5K

1.8K

SW713

SW712

STOP

MEMORY/

SET

RD03

SW704

1.5K TIMER/

SLEEP

R787 1K R786 1K

D717

RD04

1.8K

1SS133

C711

0.01

RD24

1.8K

PLAY

RD14

2.2K

SW714

TUNER/

BAND

5V BACK UP

D723 1SS133

KRC102 M

R795

4.7K 2

VOLUME DOWN

SW715

Q704

3

1

D718

1SS133

RD25

2.2K SW726 SW725

RD15

3.3K

11

R711

4.7K

IC704

KIA7042AP

RESET

C712

3.3/50

RD26

3.3K

SW727

VOLUME UP

RD16

3.9K

SW716

TAPEVIDEO

8 8

FW702

+B

R797

100K

+B

X-BASS/ DEMO

+B

3 1

2

C713

0.022 C722

10/50

RD28

RD27

6.8K

3.9K

SW728

SW729

SW730

EQUAL

DIMMER

IZER

RD17

RD18 12K

PTY/TI SEARCH

RD05

2.2K

DISC1

RD19 22K

EON

SW706 SW705

RD06

3.3K

6.8K

SW717 SW718 SW719 SW720 SW721

CD

D720 1SS133

RX701

2 3 1

ASPM

R780 10K

D721

1SS133

REMOTE SENSOR

RD20 68K

RD07

3.9K

SW707

DISC3 DISC2

D719

1SS133

R798

100

C714

0.022

DISPLAY MODE

+B

D722

1SS133

RD09

6.8K

SW708 DISC

SKIP

+B

C715

+B

SWITCH PWB-A4

+B

47/25

C719

RS712 1.2K

+B

C718 47/25

SW709

OPEN /CLOSE

+B

RS711

1.5K

0.022

OE

Q11

VDD

VSS

CLOCK

DATA

1 2 3 4

+B

Q9Q7Q8

Q10

LCK

6

5

RS702 470

RS701 470

LED701

L1154GT4

LED702

SLI342YCB

NIGHT RIDER 1

NIGHT RIDER 2

NIGHT RIDER 6

NIGHT RIDER 7

LED707

L1154GT4

RS706

470

RS707 470

101112131415161718

Q6

Q5

Q4

Q3

Q2Q1Q0

8

9

7

RS703 470

RS704 470

RS705 470

LED703

SLI342DCB

LED704

SLI342UCB

NIGHT RIDER 4

NIGHT RIDER 5

NIGHT RIDER 3

RWC(DSP)

1

WRQ(DSP)

2

CO IN(DSP)

3

SQ OUT(DSP)

4

CQ CK(DSP)

5

RES(DSP)

6

DRF(ASP)

7

D_GND

8

SLD+

9

SLD–

10

PUIN SW

11

OPEN/CLOSE

12

DISC NO

13

UP/DOWN

14

PCCL

15

BI702

CNS12

+5V

1

AC_RLY CON

2

UN_SW 5V

3

D_GND

4

BI703

CNS806

+B

LED706

SLI342YCB

IC703

BU2092F

INPUT/OUTPUT EXPANDER

LED705

SLI342DCB

+B

CNP12

P27 7 - G

TO CD SERVO PWB

CNP806

P23 7 - G

TO POWER PWB

7

8 9 10 11 12

Figure 25 SCHEMATIC DIAGRAM (6/9)

– 25 –

CD-C621H

P

1

A

B

C

D

E

F

G

LD

LT0H30M1

TR+ FO+

FO– TR–

ACTUATOR

PICKUP UNIT

CD MOTOR PWB-D

M1

SPINDLE

M

MOTOR

M2

SLED

M

MOTOR

SW4

PICKUP

IN

5

K E

4

A

3

B

2 1

F

K E B LD GND

A F C

CNS1B

+

–

+

–

MON

TR– TR+ FO+ FO– GND PD VR LD

CNS1A

1 2 3 4 5

CNS2B

1 2 3 4 5

CNP1

1 2 3 4 5 6 7 8

CNP3A

6 5 4 3 2 1

K A B E F

5

K

4

E

3

A B

2

F

1

TR–

1

TR+

2

FO+

3

FO–

4

GND

5 6

PD

7

VR

8

LD

CNS2A

1

2 3 4

5 6

7

8

CNS3B 1 CNS3A

6

5

4

3

2

2 1

1 2 3 4 5 6 7 8

6 5 4 3 2 1

PD

LD

CNP2

CNP3

0.01

C15

R2 1K

C2

0.01

0.1/50

TE

C54

0.001 R11

6.8K

R13

1K

R14 27K

C12

TR– TR+ FO+ FO–

C36

100/16

C55

100/16

CD_GND

SP+ SP– SL_+ SL_– CD_PUIN

0.1

C4

R16

3.3K

R22

C1

47/16

2SA1318

9

R9

100K

R12

C9

0.047

820

Q1

R10

2.2K

100

R15 12K

8

R20 R21

R1

22 C3

1/50

1 2 3

4 5

R8

15K

6 7

C5

0.033 8

C6

0.033 9

C7

0.1/50

1

0

C8

0.068

11 12

C10

180P

13 14 15 16

R17 33K

C11

0.1

1K

R19

1.5K

VREF

C76

0.022

R56

+B

FIN2 FIN1

EREF

F TB TE–

TE

TESI

SCI

TH

TD– TD

JP TO FD

R18 15K

1 2 3 4 5 6 7 8 9

10

11 12

13

14

15

16 17 18 19 20 21

22K

REF

NC

64

63 62

LDS

VCC1

–

+

–

+

REF

+

GEN

REF

–

+

FD–

17

1

TO FD FO (GAIN) FO+ FO– TR+ TR–

SL– SL+ SLD VCC1 STANDBY Vref MUTE

C34

C33

0.33/50

0.47/50 C32

560

R46

61

60

59

BHI

–

PHI

LDO

+

RF

FE1

–

+

REF

VCR

–

+

–

VCR

+

VCR

–

+

–

+

–

REF

+

–

TGL1

REF

–

REF

FA

18

R23

R24

47K

IC3

THDL

THD

JP

FSC

+

FOSTA

REF

–

+

–

REF

+

–

19

10K

M63001FP

REF

TO

GEN

+

–

REF

–

+

GEN

FE

FA–

FE–

23

21

22

20

C13

330P

R26

82K

C14

0.01 R25

1.5K

LD_M+

42

LD_M–

41

VCC4

40

M+

39

M–

38

SOL–

37

SOL+

36 35 34 33

GNDGND

32 31 30

/SLED DRIVER

29

VCC3

28

FOCUS/TRACKING/SPIN

SP+

27

SP–

26

SPO

25

(SPN)VCC2

24

SOLD

23

SOL–

22

0.01 C31

58

VR

LF2

+

–

REF

+

–

+

–

LA9241M

SERVO AMP.

VCC

+

REF

GL

REF

FE1

+

REF

SP

SPI

AGND

24

25

C16

0.0047

R31

R27

1.2K

39K

+B

C82

100/16

C77

100/16

+B

220/6.3

57

REF1

DEF HFL

DRF

IC1

–

FSTA

S.Q.R

–

+

–

SPG

26

10K

R28

C18

0.47/50

C30

REF

SP–

C17

0.001

R30

6.8K

0.1/50

56

VCC2

2

JP

R29

56K

27

55

FSS

10

54

DRF

EFBAL FOSTA TOSTA 2FREQ LASER FSTA 8/12CM

SLOF

+

–

+

–

SLOF

REF

SLEO

SPO

28

R33

1.2K

C20

53

CE

CV– CV+ JP–

JP+ JPCLO

OR

REF

47/16

R32

10K

52

R34

DAT

1K

51

CL

CE CL

LATOH

REF

SLOF

5

SLOF

+

–

SLD

29

1/50

C19

50

FSC

4

49

R45

4.7K

48

NC

CLK

DEF

TBC

47

46

DGND

45

REF

SLI

44

SLC

3

43

RFS–

42

–

+

C24

RFSM

RF

41

TP1

CV+

40

CV–

39

SLOF

38

HFL

37

TES

36

TOFF

35

+

TGL

–

34

JP+

33

JP–

SL–

SL+

32

31

30

R36

220K

C21

0.0033

R35

220K

R37 82K

C28

0.1

C29

4.7/50

R44

C26

33K

0.033

C27

0.001

R41

R42

47K

C25

R40

R39

27P

5.6K

1K

R38

56K

R43

2.2P

470

HF

6

C23

0.0027

C22

220P

7

GND

C35 1/50

D1

1SS133

+B

C57

0.001

+B

10K

+B

R47

C37

0.022

O

RES(DSP)

WRQ(DSP)

RWC(DSP)

CQ CK(DSP)

CO IN(DSP)

SQ OUT(DSP)

DRF(ASP)

D_GND

SLD+

SLD–

PUIN SW

CNP12

4 3 2 1

TO DISPLAY PWB

8

6 5

7

CNS12

P25 12 - B

10

12

11

9

H

• NOTES ON SCHEMATIC DIAGRAM can be found on page 16.

1

23456

Figure 26 SCHEMATIC DIAGRAM (7/9)

– 26 –

CD-C621H

R57 1K R58 1K R59 1K

R61 1K R62 1K R63 1K

+B

8

R44 33K

R42 47K

39 K

23

027

C22

220P

C39

0.047

R51

3.3M

+B

C57

0.001

R52

27K

11

R50 680

C40

0.047

R53

1.2K

C56

0.022

10 11 12 13 14 15 16

1 2

3 4

5

6 7 8 9

C38

0.01

DEF1 TA1

PDO

VVSS ISET

VVDD FR

VSS EFMO

EFMIN TEST2

CLV+ CLV_ V/P HLF TES

64

TEST1

R60

63

62

/CS

TEST5

SLICE LEVEL

CONTROL

CLV

DIGITAL

SERVO

COMMAND

TOFF

TGL

17

18

1K

61

4M

JP+

19

59

60

NC

16M

VCO CLOCK

JP_

PCK

21

20

C46

100P

(CH)

56

54 53

57

58

55

NC

/RES

RWC

COIN

/CQCK

SQOUT

µ-COM

TEST11

INTERFACE

2KX8

RAM

ERROR COERECT

FLAG CONTROL

OSC CONTROL

SYNC-DETECT

EFM DEMODULATE

IC2

LC78622NE

SERVO/SIGNAL

CONTROL

FSEQ

NC

CONT1

CONT2

VDD

25

22

23

24

R88 1.2K

R89 1.2K

+B

52

NC

WRQ

FSX

EXTERNAL

OUTPUT

CONT3

CONT4

26

27

R91 1K

R90 220

C44

100P(CH)

51

50

SFSY

SBCK

SUB-CODE

GENERATOR

NC

EMPH

CONT5

28

29

C45

100P(CH)

NC

X-TAL

4FS

DIGITAL

FILTER

NC

C2F

30

C47

49

NC

PW

DIGITAL

OUT

DOUT

31

C48

100P(CH)

MUTER

RVDD RCHO

DAC

@

1BIT

MUTEL

TEST4

NC

TEST3

32

100P

EFLG

SBSY

XVSS

XOUT

XVDD

RVSS

LVSS

LCHO LVDD

NC NC

XIN

NC

C49

100P(CH)

48 47

46

45 44

43 42 41 40 39

38 37 36 35 34 33

+B

R72

2.7K R71

2.7K

R65

1K

+B

C83

0.022

C71

10/50

C43

330/6.3

0.022

10/50

0.82µH

C50

+B

C72

D81

R55

100

L61

R93 220

1SS133

R74

100K

R73

100K

CD SIGNAL

X1

16.934 MHz

D82

1SS133

C74

220P

C73 220P

+B

+5V

C51

100/16

+B

CD_RCH

A_GND

CD_LCH

Q52

KTC3203 Y

R64

22

C52

100/16

R66 220

ZD61

R-CH

A_GND

MTZJ5.6B

+B

C75

0.001

L-CH D-GND

+12V

+B

+7V

CNP11

1

2 3 4

5 6

P20 1 - B

CNS11

TO MAIN PWB

D1

1SS133

B

WRQ(DSP)

RWC(DSP)

10K

R47

RES(DSP)

CQ CK(DSP)

CO IN(DSP)

SQ OUT(DSP)

4 3 2 1

6 5

P25 12 - B

TO DISPLAY PWB

C37

0.022

DRF(ASP)

D_GND

SLD+

8

9

7

CNS12

10

SLD–

PUIN SW

11

OP/CLOS

14

13 12

PCCL

DISC NO. UP/DOWN

15

D92

R82 390

1SS133

390

R83

2 3

D93

KRC102 M

1

Q51

R80 820

R81 820

R84

2.2K

D91

1SS133

CD_D_NO

+B

CD SERVO PWB-B

SOLM2

SOLENOID

LOCK

BIM05

1

SOL+ SOL– M– M+ GND(D) DISC NO.

OPEN CLOSE

GND(D) MECHA UP GND(D)

CNS10

1

2

3

4

5

6

6 7 8 9

10

1 1 2 2

CNS5

M3 T/T

–

UP/DOWN

M

LOADING

+

SW1 OPEN CLOSE

SENSOR PWB-E

SW2 MECHA UP

DISC NO

SW3 DISC NUMBER

1 2

M–

3

M+

4 5 6 7 8 9

10

CNP10

• The numbers 1 to 12 are waveform numbers shown in page 37.

7

8 9 10 11 12

Figure 27 SCHEMATIC DIAGRAM (8/9)

– 27 –

CD-C621H

A

LT22

2.2µH

RT35 220K

RT36 220K

RT37 220K

B

CT36

0.022

QT21

KTC3199 GR

RT32

10K

C

RT33

RT34

56K

CT37

0.022

D

E

R363 47K

R364 47K

C373

0.015

C374

0.015

R357 470K

TP302

C366 0.001 C365 0.022 C364 10/16

C363 0.022 C361 0.022

C343 33P

R358

8.2K

C342

R361

C371

0.022

1.2K

1/50

C369 27P

R356 1K

L354

C362

3.3/50

VR351

10K(B)

Q353

KTC3199 GR

R362

1.2K

C372

1/50

C368 1/50

X351 456KHz

FILTER

LOW PASS

R350

2.7K

L353

1mH

FM MUTE

LEVEL

R365

10K

MO/ST

13141517 1618192021222324

L-CH OUT R-CH OUT

MPX IN

MPX VCO

C367

1/50

FM/AM OUT

AM LOW CUT

VSM

AM RF IN FM AFC

AM OSC OUT

FM IF DET./

FM MPX./AM IF

F

C332

0.022

C331

0.047

C330

15P

FM SIGNAL

MW SIGNAL

(CH)

T302

C323

MW ANT.

0.022

G

D301

DS1SS133

C338

0.001

D302

TUNER PWB-C

H

MW LOOP ANTENNA

• NOTES ON SCHEMATIC DIAGRAM can be found on page 16.

C375

3.3/50

R368

R367

1K

AM MIX OUT

R351

5.6K

IC303

LA1832

VD301

SVC348S

DS1SS133

L341

CNP301

CT28

TP TP

TP

RT28 1K RT29 1K RT30 1K

R366

10K

33K

PHASE (FM/AM)

PHASE IF OUT

VCC

FM DET STEREO

SD

GND

AM IF IN

REG

AM OSC IN

FM IF IN

C335

560P

BALUN

1

47/10

CT29

0.022

RT26 1K

D353 DS1SS133

Q354

KTC3199 GR

C358

1/50

1011 12 9

R353 270

8 7

6 5

4 3 2 1

R352 1K

T306

2

R355

CT27

22P

(CH)

XT21

4.332 MHz

XIN

131415

VDDD VSSD T6

16

T7

17

SYNC

181920

RDS-ID

DO

CL

21222324

DI CE SYR

DZ5.1BSB

R354

3.9K

C370 1/50

3.3K

C357

2.2/50 C356

CF351

C354 0.022

C353

0.022

CF352 3

1

T351

C350 0.022

C344 33P C352 10/16 C351 0.022

CF302

3

1

R336 10K

R323

68K

C334

MW OSC.

C337

0.022

XOUT

FLOUT

VSSA

VDDA

MPXIN

VREF

CT43 10/16

ZDT21

RT48

390

0.001

2

27P

(UJ)

D303

DS1SS133

CIN

T2 T1

T5 T4 T3

C355

2

RT49

22P

CT26 22P

ICT21

10 11 12

LC72720

9

RDS DECORDER

8 7 6 5

RT21 100K

4 3 2 1

CT24

0.022

CT23 10/16

ZD351

DZ5.1BSB

390

L352

100µH

C398 100/10

C399

0.022

R393

1K

AM IF

D304

DS1SS133

C301

0.001

CT25 560P

CT22

0.022

C395

0.022

C396

100/10

R398

1.2K

C387

0.022

C394

C397

R344 470 C347 0.022

C345 0.022

C321 100/16 C346 0.022

SO301

ANTENNA

TERMINAL

FM

75 ohms

CT21

47/10

R391

R392

390

R377 47K

L351

C380

10/16

C392

0.001

47/16

C393

1/50

R381

10K

0.022 R382

150

33 R349

R348 680

CF301 2

R301 330

R345 4.7K

R383

390

Q360

KTA1266 GR

C385

100µH

R379

2.2K

R380

1.5K

Q301

2SC380-O

R347

6.8K

3

1

5.6K

0.01

R346

R359

1.8K

330

LT21

2.2µH

R385

5.6K

R378 82K

C386

330P

IF IN

121314151617

SD

TUN_MUTE

AM IN

FM IN VDD

PD

1819

AIN

AOUT

20

VSS

21

X OUT

22

C381

12P(CH)

C391

R395 47K

ST IND

MO/ST

X352

4.5MHz

L342

2.2mH

R369 15

B01

X IN

47/16

R384

5.6K

DO CL

CE

DI

C341

0.022

R360

4.7K

R375

R370 1K

R376

68

1K

10 11 9

8

7

6

5

4 3 2 1

D352

DS1SS133

C382

15P(CH)

IF OUT

GND F OUT VT

4 3 2 1

5

VCC

6

GND

7

GND

8

ANT

R387

22K

D351

DS1SS133

ZD352

DZ3.9BSB

3

1

Q361

KRC107 M

2

R371 1K

IC302

LC72131

PLL(TUNER)

R372 1K R373 1K R374 1K

C384

0.001

FE301

FM FRONTEND

Q371

KTA1266 GR

D GND

CLK

A+12V

A GND

CNP303

DO

4 3 2 1

CE

5

DI

6

CNS303

7

P21 12 - D

8 9

10

TO MAIN PWB

L R

SM

1

23456

Figure 28 SCHEMATIC DIAGRAM (9/9)

– 28 –

CD-C621H

D302 D301

C337

MW LOOP ANTENNA

D303

C338

C323

T302

D304

C330

12

CNP301

C321

C331

C332

L341

R347

R348

C341

VD301

R349

Q301

E

C B

3 2 1

L342

C346

ANTENNA

TERMINAL

8 7

R369

C347

R346

4

R344

3 2

CF301

1

SO301

6 5

C345

FE301

R301

FM

75 Ohms

C397

R380

R345

C394

R381

R336

C381

C380

R379

C393

R398

C392

L351

C385

C301

X352

R373

R374

R378

1 2

C387

3 4

5 6 7 8 9

10 11

IC302

C386

C382

R360

R376

R372

R371

B C

Q371

E

22 21 20 19 18 17 16 15 14 13 12

C363

C365

R357

C368

C362

L354

R356

CT37

QT21

C364

C374

B C E

L353

R358

C361

R350

C367

C369

C371

C372

Q354

BCE

R366

RT34

RT33

RT32

T306

C343 C344

C350

24 23

R351

22 21 20 19 18 17 16 15 14 13

X351

C373

R361

BCE

R362

CT36

C366

C353

Q353

R365

C334 R323

CF302

1 2 3

4

5 6 7 8

IC303

9

10 11 12

ZDT21

CT23

C351

R352

C399

C357

R364

LT21

C335

FM MUTE

LEVEL

T351

CF352

C352

CF351

R353

C358

R355

R363

R393

CT43

CT25

CT21

CT24

VR351

C398

C356

RT21

R354

D353

CT26

12 11 10

9 8

7 6 5 4 3 2 1

123

C354

R359

R368

C342

C370

C375

CT29

ICT21

CT22

R395 L352

R367

XT21

13 14 15 16 17 18 19 20 21 22 23 24

R385

C355

RT49

LT22

RT28

RT30

R377

Q360

BCE

R392

ZD351

RT48

CT27

R383

ZD352

CT28

RT29

R387

C395

RT26

R384

C384

D351

C391

123

R391

C396

RT37

D352

Q361

RT35 RT36

R382

R370

1 2 3 4 5 6

CNP303

7 8 9

10

TO MAIN PWB

CNS303

P31 9 - A

TUNER PWB-C

7

8 9 10 11 12

Figure 29 WIRING SIDE OF P.W.BOARD (1/7)

– 29 –

CD-C621H

C808

2

W

A

COLOR TABLE

RD(R)

B

WH(W)

C

M901

FAN MOTOR

D

E

F

G

SO901

SPEAKER

TERMINAL

BR

BROWN

OR

ORANGE

YL

YELLOW

GR

GREEN BL VL

GY

BLUE

VIOLET

GRAY

WHITE

BK

BLACK

PK

PINK

CNS804

RD

2 1

BR

SURROUND

16 OHMS

MIN.

FRONT

6 OHMS

MIN.

RED

JK601

VIDEO IN

L-CH R-CH

R-CH

L-CH

+

– –

+

– –

P33 8 - H

TO DISPLAY P

CNS701

1

MAIN PWB-A1

P35 12 - D

TO CD SERVO PWB

CNP11

CNS11

1 2 3 4 5 6 RDWHWHWHWH

FC701

WH

C615

C622

R628

R617

R936

R611

C620

C619

C623

R618

C938

R939

C616

C625

C624

R912 C907

Q906

C605

R629

R642

R613

Q602

C912

R938

C601

ZD602

C621

R612

C618

R610

R623

C654

R654

R650

BCE

Q603

BCE

Q601

C635 R621

R615

E C

R646

B

C634

1

2 3 4 5 678 9

C911

R913

R931

C921

E C B

D906

D903

C651

R637

R638

R652

ECB

Q650

Q604

R614

R656

C602

R630

R645

R635

BCE

C626

R622

R905

R926

Q905

C650

R620

R902

IC901

R925

R930

R929 D904

C901

C902

C915

R928

E C B

R616 R636

R901

10 11

R917

R918

Q904

C916

R916

C920

C917

R904

12

C903

C905

13 14

C924

R921

1

6

R903

R923

R924

BI601

15

C923

R922

R907

C918

D801

1

2

3

4

5

6

7

8

9

10

11

12

13

CNP701

14

15

16

17

18

19

20

21

22

Q8

32

C821

C830

C826

C831

R609

R639

R603

C611

R607

C617

ZD601

C613

10

C652

ECB

Q651

C653

R651

R655

R641

R653

R605

R601

15

IC601

C627

R944

C628

R619

R960

C935

R950

R626

R640

R625

C960

BCE

E C B

Q907

111520

R624

C629

R962

C904

R942

R941

C606

R608

R606

R604

R602

C603

C614

R634 R632

C632 C631 R631 R633

C630

CNP804

C612

C604

D601 D602

1 2

BCE

Q960

R963

C942

R937

C946

C944

L902

D960 R961

C937

C940

L901

C961

+

C956

C954

+

C950

C951

C953

R945

C947

C945

C934

C943

C941

C936

123

R952

R951

C952

H

1

23456

Figure 30 WIRING SIDE OF P.W.BOARD (2/7)

R943

R934

Q908

RL901

D907

R949

R946

C910

R966

R830

C909

– 30 –

R928

C902

P33 8 - H

TO DISPLAY PWB

CNS701

CD-C621H

R616

R636

901

R901

10 11

1

R917

E C B

Q904

C909

FC701

R904

C916

R916

R918

C920

C917

12

1

C903

C905

13 14

C924

R921

1

6

R903

R923

R924

15

C923

R922

R830

BI601

R907

C918

D801

2 4 6

8 10 12 14 16 18 20 22

1 3 5 7

9 11 13 15 17 19 21

Q821

321

C821

C830

C826

C831

22

R157

CNP701

12345678910

D821

D820

C825

C824

R832

C827

C828

R827

D833

C832

R837

C833

C808

C807

CNS303

Q823

R825

D832

P29 12 - F

TO TUNER PWB

CNP303

Q114

B

C

E

R172

R170

R153

B C E

Q121

F832

T500mA L 250V

F802

B C E

1 2

Q824

3

1 2

Q822

3

R156

Q122

C130

R136

BCE

R140

C142

R154

C145

C146

R134

R174

C141

R158

C154

CNP802

12345678

F803

D803

T4A L 250V

D805

C803

C813

C804

ZD802

C812

D807

D808

D809

C156

C136

C134

C140

R146

R138

13 15

12

10

R145

R137

C129

R135

R173

Q113

F805

T4A L 250V

D804

D806

C805

C802

R803

ZD801

E C

Q801

B

C811

D962

D961 C962

R142

IC101

C139

R141

R139

B

C

E

C132

C806

R801

R806

R132

R126

R124

R111

C122

L108

20

C113

5

C128

C131

C133

R123

R125

R131

C155

C135

R169

1 2 3

R171

Q126

WTM801

5 4 3 2 1

T2A L 250V

TRANSFORMER

R802

C120

R122

C116

C114 C112

24

R119

1

C121

C111

C127

L107

R121

C119

Q124

BCE

R162

R164

R175

P34 2 - B

CNS802

TO POWER

C118

R102

C117

L103

R155

Q103

B

C

E

R105

Q105

R120

R118

CNP102

7

654321

C107

E

C

B

R117

Q107

C108

Q108

C102

R107

R101

1 2 3

CNP101

C115

R160

1

2

Q111

3

5

C970

L970

C971

HEADPHONES

HEADPHONES PWB-A5

Q104

R103

R112

R108

C101

L104

R168

C152

C109

Q110

FW801

JK970

E C B

R104

C106

C105

C151

C153

R115

ECB

R113

R114

E C

Q106

B

R106

TO TAPE MECHANISM

R110

R109

C150

TO TAPE MECHANISM

R166

Q128

R167

Q109

1

P34 5 - D

CNS102

TAPE2 HEAD

P34 4 - D

CNS101

TAPE1 HEAD

7

8 9 10 11 12

Figure 31 WIRING SIDE OF P.W.BOARD (3/7)

– 31 –

CD-C621H

R

3

R

SWITCH PWB-A4

A

SW709

OPEN/CLOSE

B

DISPLAY PWB-A3

SW729

EQUALIZER

C718

RD09

RS712

SW708

DISC SKIP

C719

COLOR

TABLE

RS707

10

15

9

LED707

5

IC703

18

1

RS706

RS705

3839 3036

LED706

37

323334

35

LED705

RS711

28

26

29

31

27

RS704

LED704

25

RS703

24

2223

21

B

LED70

1819

17

20

RD28

C713

C

SW730

DIMMER

IC704

R749

R750

D719

D722

RD27

SW728

X-BASS/

DEMO

D720

D721

D

E

C711

R795

D723

R711

C712

1 2 3

R579

R578

R562

C566

D554

IC563

R570

C557

1 4

C551

R568

C556

C555

R555

R553

R551

RD26

VOLUME UP

C706

C720

D718

R797

C723

C722

C567

Q704

R564 C559 C553

8 5 R572

R566

SW727

Q706

321

D717

D555

D556

IC562

1 4

R560

R558

D551

E

C

E

Q705

B

C B

E

CB

Q707

L702

C568

R580

C569

R573

R567

C562

C561

8 5

R556

C563

R574

R727

ZD551

R561

R716

RD21

R575

TUNING UP

RD22

C710

SW722

SW723

R770

R769

R768

R774

R771

R767

R766

R765

R778

RD23

R777

R721

R706

R776

R722

R707

R775

R723

R708

C709

C708

R772

RD24

C707

XL701

R764

SW725

PLAY

100

1

R763

R762

FL701

95

5

80

81

85

75

70

90

10

65

60

55

IC701

25

30

R744

R757

SW713

STOP

45

40

35

31

R740

R741

R755

R742

R743

R745

15

20

SW724

F

1

RD25

BI703

1

4

SW726

VOLUME DOWN

TUNING

DOWN

BI702

15

C705

BI701

D716

R759

B C E

18

G

RDWHWH

WH

1234

CNS806

CNP806

P34 1 - F

TO POWER PWB

CNS12

H

1

23456

BLBLBLBLBLBLBLBLBLBLBLBLBL

RD

10111213

CNP12

P34 12 - B

TO CD SERVO PWB

1415

BL

WH

GY

WH

121110 9 8 7

TO TAPE MECHANISM PWB

GY

WH

6543

CNPM1

P34 6 - A

GY

WH

21456231789

Q703

RD

LED717

Q702

R758

E C B

R724

CNSM1

R760

LED716

R786

1

Figure 32 WIRING SIDE OF P.W.BOARD (4/7)

– 32 –

CD-C621H

S704

C707

708

Q703

1

XL701

R764

SW725

PLAY

R758

LED704

25

100

R763

R762

LED717

Q702

E C B

R724

24

R760

FL701

81

95

5

10

COLOR

TABLE

2223

21

85

90

15

20

LED716

R786

RS703

20

80

75

70

IC701

35

25

30

R744

R757

SW713

STOP

BR

BROWN

LED703

RS702

1819

17

65

60

55

45

40

31

R741

R742

R743

13

16

141511

51

50

R740

R739

R737

R756

R755

R745

R761

R787

1

3 5 7 9 11 13 15 17 19 21

2 4 6 8 1012 14 16 18 20 22

RD(R)

RED

LED702

RD07

12

R736

R734

R733

R780

CNS701

ORANGE

9

10

R732

R731

R735

R738

R752 R753

R754

R751

R715

OR

RS701

8

6

7

R730

R748 R747

RD12

RD13

SW712

MEMORY/

SET

YL

YELLOW

FW702

4

5

R702

R709

R705

R720

SW710

RD10

RD11

SW711

REC PAUSE

R713

LED701

R701

R712

GR

GREEN

1

3

2

R726

R703

R717

R719

1

R798

SW714 TUNER (BAND)

BL

BLUE

C714

RD02

SW702

STATION

R714

VIOLET

SW707

RX701

21

3

SW721

DISPLAY

MODE C702

RD14

SW715

VIDEO/AUX

VL

DISC3

RD20

RD15

RD06

LED722

SW720 ASPM

C715

RD17

SW717

GY

GRAY

SW706

RD19

CD

WH(W) BK

WHITE

DISC2

RD05

SW719

EON

RD01

SW704 TIMER/

SLEEP

RD03

RD18

SW718

PTY/TY

SEARCH

SW716

TAPE

BLACK

SW705

DISC1

RD04

SW703 CLOCK

SW701

POWER

PK

PINK

1

FW702

8

RD16

1

RD

22

FC701

1

CNSM1

CNP701

P31 8 - A

TO MAIN PWB

B

7

8 9 10 11 12

Figure 33 WIRING SIDE OF P.W.BOARD (5/7)

– 33 –

CD-C621H

A

TAPE MECHANISM PWB-F

B

1 2 3 4 5 6 7 8

RDBLRDYLYLBRBK

C

RD

D815

D802

R808

D

E

F

CNP806

1 2 3 4

3 2 1

Q803

P32 1 - H

TO DISPLAY PWB

CNS10

PHM1

4

1 2

3

P31 10 - E

TO MAIN PWB

CNP802

CNS802

RL801

D818

C815

Q802

3 2 1

C814

D816

D810

C809

C810

D813

CNS806

MECHA UP

OR

10

BR

9

WH

8

GY

7

WH

6

GY

5

WH

4

GY

3

WH

2

RD

1

FWM1

BR

T801 POWER TRANSFORMER

BL

1 2

1 2 CNP801

C801

D811

D812

T802

POWER TRANSFORMER

SW2

CNS5

2 1

OPEN/CLOSE

BK

SW1

SWM3 F. P.

12

WH

-

+

CNS801

L801

POWER PWB-A2

1

BIM5

6

SOLM1 SOLENOID (254-8)

MM1 TAPE MOTOR(254-7)

SO801 AC POWER INPUT

2 1

SW3 DISC NUMBER

SENSOR PWB-E

M3 T/T UP/DOWN LOADING

-

+

12

FWM2

BK WH

When Servicing, pay attention as the area enclosed by this line ( ) is directly connected with AC main voltage.

101112

CNPM2

SWM5

CAM

TAPE 1

PLAYBACK HEAD(254-6)

WH PK

PK

CNP101

P31 12 - C

TO MAIN PWB

AC POWER SUPPLAY CORD AC 230 V/50Hz

SOLENOID SOLM2

123456789

CNPM1

SWM4 F. A. S

ERASE HEAD(254-5)

BK

WH

CNS101

M1

SPINDLE

MOTOR

R

TAPE MECHANISM

ASSEMBLY

TAPE 2

RECORD/PLAYBACK

WH BK

GYGY

YL

BK

PK

BK

WH

7654321231

CNP102

P31 12 - B

TO MAIN PWB

GY

WH

PICK UP IN

+

P32 5 - H

CNSM1

TO DISPLAY PWB

HEAD(254-6)

YL

WH

BL

GY

BL

CNS102

CNS3A

123456

RD

GY

WH

123456

CNS3B

CNP3A

123456

-

SW4

M2

SLED MOTOR

PK

+

G

-

YL

COLOR

TABLE

BR

BROWN

RD(R)

RED

OR

ORANGE

YELLOW

GR

GREEN

BL

BLUE

VL

VIOLET

GY

GRAY

WH(W) BK

BLACK

WHITE

PK

PINK

CD MOTOR PWB-D

H

1

23456

Figure 34 WIRING SIDE OF P.W.BOARD (6/7)

– 34 –

CD-C621H

5

R63

R50

R52

C28

R61

R57

R62

C44

C49

C45

R58

64

60

5

1

C56

R44

C22

C29

R45

4849

50

45

55

10

16

R16

C76

5

IC1

15

R13

1

R20

R17

R21

20

R22

17

C11

R18

40

35

30

25

C13 R26 R25

R24

R23

C55

21

20

22

C36

X1

4849

50

55

IC2

10

20

15 16

R93

45

40

33

35

32

30

25

17

R90

R36

R35

R88

R54

R55

R89

C43

C50

R91

R65

L61

D82

C83

R72

C72

C74

R74

C73

R73

R71

C71

CNP12

D81

CNS12

P32 3 - H

TO DISPLAY PWB

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1

11

5

R29

42

R32

R33

C17

C19

R34

C18

R31

R30

R80

R82

1 2 3 4 5 6 7 8 9 10

D91

R81

R83

Q52

R84

E C

B

D93

D92

R64

R66

3 2 1

CNP10

Q51

C52

C51

C75

C77

ZD61

CNP11

6 5 4 3 2 1

6

7

CNS11

P30 5 - A

TO MAIN PWB

C21

33

32

C20

R19

C14

R56

C16

R27

R28

1

10

15

5

IC3

30

25

40

35

C82

C37

C48

R41

C27

R51

C26

R42

C39

C40

R47

C23

C47

C38

C25

R39

R38

R40

C46

C57

R59

R60

R53

R43

C24

3

D1

4

2

9

8

C30

C31

B C

Q1

E

C3

C2

R2

12345

C4

R8

C54

R12

C8

C32

C35

C34

R46

R1

C1

C15

R9

R11

C7

R37

C33

C12

CNP1

C5

CNP2

8765432

12346

CNP3

60

64

1

C10

R15

R10

C9

R14

C6

1

CNS1A

BK

1

WH

2

PK

3

YL

4

BL

5 1

2 3 4 5 6 7 8

• The numbers 1 to 12 are waveform numbers shown in page 37.

7

8 9 10 11 12

Figure 35 WIRING SIDE OF P.W.BOARD (7/7)

– 35 –

10

PICKUP UNIT(306)

CNS1B

BL

1

PK

2

WH

GY

RD

WH

GY WH GY WH GY WH

3

YL

4

BK

5 1

2 3 4 5 6 7 8

CNS2BCNS2A

CD SERVO PWB-B