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– 13 –

load impedance

32 

Ω

output signal level

0.25 V (–10 dB)

WS-48A

3 kHz, 0 dB

tape speed adjustment

Procedure:
Mode: playback

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 demagne-

tizer. (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, apply suitable locking compound to the

parts adjusted.

5. The adjustments should be performed with the rated power

supply voltage unless otherwise noted.

FWD

CQ-102C

30 – 70 g • cm

(0.42 – 0.97 oz • inch)

FWD

CQ-102C

1.5 – 5.5 g • cm

Back Tension

(0.021 – 0.076 oz • inch)

FF

CQ-201B

more than 60 g • cm

(more than 0.83 oz • inch)

REW

CQ-201B

more than 60 g • cm

(more than 0.83 oz • inch)

FWD

CQ-403A

more than 100 g

(more than 3.53 oz)

1. Make sure that the value indicated on the frequency counter

falls into the specification.

2. If out of specification, adjust so that the value on the frequency

counter is 3 kHz.

2,985 to 3,015 Hz

Adjust so that the frequency at the beginning and that at the end of
tape winding are between 2,955 to 3,045 Hz.

phones jack

set

32 

Ω

test tape
WS-48A
(3 kHz, 0 dB)

digital frequency
counter

TAPE SPEED
Adjustment

– 14 –

Frequency Display

87.5 MHz

108 MHz

(65 MHz)

Reading on Digital voltmeter

1.8 

±

 0.2 V

5.6 

±

 0.2V

(0.9 

±

 0.2 V)

(7.3 

±

 0.2 V)

Adjustment Part

L6

<confirmation>

Adjust for a maximum reading on level meter.

L5

CT1

87.5 MHz (68 MHz)

108 MHz (102 MHz)

Frequency Display

531 kHz

1,611 kHz

Reading on Digital voltmeter

0.9 

±

 0.1 V

5.6 

±

 0.2V

Adjustment Part

L2

CT2

Adjust for a maximum reading on level meter.

L9

CT4

621 kHz

1,404 kHz

Frequency Display

153 kHz

279 kHz

Reading on Digital voltmeter

0.6 

±

 0.1 V

5.3 

±

 0.2V

Adjustment Part

CT3

<confirmation>

Adjust for a maximum reading on level meter.

L10

CT5

162 kHz

261 kHz

(       ) : East European model

Adjustment Location: See page 15.

µ

Setting:
BAND switch: FM

22.5 kHz frequency
deviation by 400 Hz signal
output level : as low as possible

Setting:
BAND switch: MW or LW

30% amplitude
modulation by
400 Hz signal

• Repeat the procedures in each adjustment several times, and the

frequency coverage and tracking adjustments should be finally
done by the trimmer capacitors.

TP (FM ANT)

FM RF signal
generator

0.01 

µ

F

set

Put the lead-wire
antenna close to
the supplied MW/LW
loop antenna.

AM RF signal
generator

phones jack

set

32 

Ω

level meter
(range: 0.5–5 V ac)

digital
voltmeter

100 k

Ω

TP (VT)

– 15 –

Adjustment Location: main board

–main board (component side)–

MW

FREQUENCY

COVERAGE

Adjustment

CT3

LW

FREQUENCY

COVERAGE

Adjustment

FM

TRACKING

Adjustment

TP (VT)

CT1

L6

FM

FREQUENCY

COVERAGE

Adjustment

L5

LW

TRACKING

Adjustment

CT5

L10

CT2

L2

MW

TRACKING

Adjustment

CT4

L9

TP

(FM ANT)

R31

– 16 –

A

0V

A=B

B

1. Perform Traverse adjustment in test mode.

After adjustment, be sure to release test mode.

2. Perform adjustments in the order given.
3. Use the disc (YEDS-18, Part No. 3-702-101-01) only when so

indicated.

4. Short the both sides of R714 on the CD board for stop operation

of anti-shock circuit. (See page 19.)

• Switch position
FUNCTION switch : CD

1. Short the solder bridge the TP801 (TEST) on the key board.
2. Insert the AC power plug.

    Release the shorted solder bridge the TP801 (TEST), the test mode
   is release.

Put the set into test mode and perform the following checks. Repair
if there are any problems.

Press the 

±

, 

≠

 buttons and confirm that the optical pick-up

moves smoothly from the innermost to outermost circumference
and back smoothly and with no catching or abnormal noises.

±

 : Optical pick-up moves to the outer circumference

≠

 : Optical pick-up moves to the inner circumference

1. Push the 

fl button. (Focus search operation is performed

continuously.)

2. Look at the optical pick-up objective lens and confirm the it moves

up and down smoothly, with no catching or abnormal noises.

3. Push the 

π

 button.

Confirm that focus search operation stops. If it does not, push the

π

 button again longer.

This adjustment is to be done when the optical pick-up block is
replaced.

1. Connect the oscilloscope between TP (TE) and TP (VC).
2. Put the set into test mode.
3. Push the CD lid to open and insert disc (YEDS-18).
4. Close the CD lid.
5. Press the 

±

 and 

≠

 buttons to move the optical pick-up to

the center.

6. Push the 

fl button.

7. Push the 

π

 button.

8. Push the 

fl button.

9. Adjust RV702 so that the oscilloscope traverse waveform is

symmetrical, as shown in the figure below.

10. Release test mode after adjustment is completed.

–key board (conductor side) –

 

See page 19.

oscilloscope
(DC range)

CD board

TP (TE)
TP (VC)

TP801

 (TEST)