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49

1. Mode:  Playback

2. Turn the adjustment screw and check output peaks. If the peaks

do not match for L-CH and R-CH, turn the adjustment screw
so that outputs match within 1dB of peak.

3. Mode:  Playback

4. After the adjustments, apply suitable locking compound to

the pats adjusted.

Screw
position

L-CH
peak

within
1dB

Output
level

L-CH
peak

R-CH
peak

within
1dB

Screw
position 

R-CH
peak

0 dB=0.775 V

−

1. Demagnetize the record/playback head with a head

demagnetizer.

2. Do not use a magnetized screwdriver for the adjustments.

•

P-4-A063

6.3 kHz, -10 dB

Azimuth Adjustment

−

°

°

°

°

•

1. Clean the following parts with a denatured-alcohol-moistened

swab :

record/playback head

pinch roller

erase head

rubber belts

capstan

idlers

2. Demagnetize the record/playback head with a head

demagnetizer. (Do not bring the head magnetizer close to the
erase head.)

3. Do not use a magnetized screwdriver for the adjustments.
4. After the adjustments, appiy suitable locking compound to

the parts adjusted.

5. The adjustments should be performed with the rated power

supply voltage unless otherwise noted.

•

•

FWD

CQ-403A

more than 100 g

(more than 3.53 oz)

2.95 – 6.86 mN • m

(30 to 70 g • cm)

(0.42 – 0.97 oz • inch)

0.15 – 5.39 mN • m

(1.5 to 5.5 g • cm)

(0.021 – 0.076 oz • inch)

more than 5.89 mN • m

(more than 60 g • cm)

(more than 0.83 oz • inch)

more than 5.89 mN • m

(more than 60 g • cm)

(more than 0.83 oz • inch)

CQ-102C

CQ-102C

CQ-201B

CQ-201B

FWD

FWD

back tension

FF

REW

50

+
–

BD board

TP (RFACI)
TP (VC)

oscilloscope 

(DC range) 

1. Connect oscilloscope to TP (RFACI) and TP (VC) on the BD

board.

2. Press the

I/

1 button to turn the power ON, and press

the A (CD) button to open the CD disc tray.

3. Set disc (YEDS-18) on the tray and press the

CD

 7 button

to playback.

4. Confirm that oscilloscope waveform is as shown in the figure

below. (eye pattern)
A good eye pattern means that the diamond shape (

◊) in the

center of the waveform can be clearly distinguished.

±

1.

CD Block is basically constructed to operate without adjustment.

2.

Use YEDS-18 disc (3-702-101-01) unless otherwise indicated.

3.

Use an oscilloscope with more than 10 M

Ω impedance.

4.

Clean the object lens by an applicator with neutral detergent when the

signal level is low than specified value with the following checks.

5.

Check the focus bias check when optical pick-up block is replaced.

Adjustment Location: Record/Playback/Erase Head

51

AMP board

THERMISTOR board

PANEL (1) board 

PANEL (2) board 

HEADPHONE board

ANALOG-IN board

POWER board

AU-TC board

MAIN board 

SW, DISC board

SW (B) board

SW (D) board

SW (A)  board

ELV MOTOR board

MOTOR board

BD board

RELAY board

MOTOR LOD board

52

For Schematic Diagrams.
Note:
• All capacitors are in 

µ

F unless otherwise noted.  (p: pF)

50 WV or less are not indicated except for electrolytics and
tantalums.

• All resistors are in 

Ω

  and 

1

/

4

 

W or less unless otherwise

specified.

•        

 f

: internal component.

•  

2

: nonflammable resistor.

•

1

: fusible resistor.

•

C

: panel designation.

•

A

: B+ Line.

•

B

: B– Line.

• Voltages and waveforms are dc with respect to ground

under no-signal (detuned) conditions.
– BD Board/MOTOR Section –
No mark : CD PLAY
– AUDIO Section –
No mark : TAPE PLAY
– MAIN Board –
No mark : FM
(           ) : CD PLAY
[           ] : TAPE PLAY
– Other Section –
No mark : FM

*

: Impossible to measure

• Voltages are taken with a VOM (Input impedance 10 M

Ω

).

Voltage variations may be noted due to normal production
tolerances.

• Waveforms are taken with a oscilloscope.

Voltage variations may be noted due to normal production
tolerances.

• Circled numbers refer to waveforms.

• Signal path.

F

: TUNER

J

: CD

f

: AUDIO

d

: PB (TAPE)

G

: REC (TAPE)

h

: DIGITAL OUT (CD)

L

: ANALOG IN

• Abbreviation

CND

: Canadian model

CET

: East European and Russian model

For Printed Wiring Boards.
Note:
•

X

: parts extracted from the component side.

•

Y

: parts extracted from the conductor side.

•        

f

: internal component.

•

: Pattern from the side which enables seeing.

• Indication of transistor.

Caution:
Pattern face side: Parts on the pattern face side seen from
(Conductor Side)

the pattern face are indicated.

Parts face side:

Parts on the parts face side seen from

(Component Side) the parts face are indicated.

The components identi-
fied by mark 

0

  or dot-

ted line with mark 

0

 are

critical for safety.
Replace only with part
number specified.

Les composants identifiés
par une marque 

0

 sont cri-

tiques pour la sécurité.
Ne les remplacer que par une
piéce por tant le numéro
spécifié.

C

B

E

Q

B

C

E

B

C

E

Q

B

C

E