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– 13 –

2

 guide (C)

1

 three claws

two precision screws
(P2 

×

 2)

capstan/reel motor
(M901)

30˚

– 14 –

This set have the test mode function. In the test mode, FM Auto
Scan/Stop Level and AM Auto Scan/Stop Level adjustments can
be performed easier than it in ordinary procedure.

<Set the Test Mode>
1. Set the “power select” switch (S600) is “A (ON)” position.
2. Turn ON the regulated power supply. (All LEDs on the set

lights up, and the clock is displayed.)

 Press the 

[OFF]

 button, if the clock is not displayed.

3. Push the preset 

[4]

 button.

4. Push the preset 

[5]

 button.

5. Press the preset 

[1]

 button for more than two seconds.

6. Then the display indicates all lights, the test mode is set.

<Release the Test mode>
1. Push the 

[OFF]

 button.

2. Return the “power select” switch (S600) to initially set posi-

tion.

Procedure:
1. Put the set into the FWD PB mode.
2. Adjust adjustment resistor for inside capstan motor so that the

reading on the speed checker or frequency counter becomes in
specification.

Specification: Constant speed

Adjustment Location: See page 18.

See the adjustment location from on page 18 for the
adjustment.

0 dB=0.775 V

Speed checker

Frequency counter

–1.5 to +2.5%

2,955 to 3,075 Hz

set

+

–

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

LINE OUT REAR jack (CN780)

10 k

Ω

speed checker

or

frequency counter

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

swab:

playback head

pinch roller

rubber belt

capstan

idler

2. Demagnetize the playback head with a head demagnetizer.
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 power supply

voltage unless otherwise noted.

Mode

Tension Meter

Meter Reading

Forward

CQ-403A

more than 90 g

(more than 3.18 oz)

Reverse

CQ-403R

more than 90 g

(more than 3.18 oz)

Mode

Torque Meter

Meter Reading

Forward

CQ-102C

30 – 65 g•cm

(0.42 – 0.90 oz•inch)

Forward

CQ-102C

0.5 – 4.5g•cm

Back Tension

(0.01 – 0.06 oz•inch)

Reverse

CQ-102RC

30 – 65 g•cm

(0.42 – 0.90 oz•inch)

Reverse

CQ-102RC

0.5 – 4.5g•cm

Back Tension

(0.01 – 0.06 oz•inch)

FF, REW

CQ-201B

60 – 200 g•cm

(0.83 – 2.78 oz•inch)

– 15 –

[SHIFT]

 button

: ON (light up SET UP and

PLAY MODE)

Preset 

[4]

 (PLAY MODE)

n 

[5]

 (

n) buttons

: NR off

SOUND (BAS) button

: Center

SOUND (TRE) button

: Center

SOUND (BAL) button

: Center

SOUND (FAD) button

: Center

SOUND (VOL) button

: Maximum

Procedure:
1. Put the set into the FWD PB mode.
2. Adjust RV230 (L-CH) and RV240 (R-CH) so that the level

meter reading is –6±0.5 dB (0.37 to 0.41 V).

Adjustment Location: See page 18.

 0 dB=1µV

When the tuner unit is defective, replace it by a new one be-
cause its internal block is difficult to repair.

 Adjust the tuner section in the sequence shown below.

1. FM Auto Scan/Stop Level Adjustment
2. FM Stereo Separation Adjustment (WIDE)
3. FM Stereo Separation Adjustment (NARROW)
4. AM Auto Scan/Stop Level Adjustment

[SOURCE]

 button

: FM

FREQUENCY SELECT switch (E model): FM 200 k

Procedure:
1. Set to the test mode. (See page 14)
2. Push the 

[SOURCE]

 button and set to FM.

Display

3. Push the preset 

[3]

 button.

Display

4. Adjust with the volume RV2 on TUX10 so that the “FM” indi-

cation turns to “FM0” indication on the display window.
But, in case of already indicated “FM0”, turn the RV2 so that
put  out light “0” indication and adjustment.

Display

Adjustment Location: See page 18.

set

+
–

test tape
P-4-D400
(400Hz, 0 dB)

level meter

MAIN board

TP (DOLBY-L)/
TP (DOLBY-R)

      

set

antenna jack

FM RF signal

generator

Carrier frequency

: 97.9 MHz

Output level

: 22 dB (12.6 

µ

V)

Mode

: mono

Modulation

: 1 kHz, 22.5 kHz deviation (30%)

0.01 

µ

F

SHUF

SHUF

SHUF

– 16 –

[SOURCE]

 button

: FM

FREQUENCY SELECT switch
(E model)

: FM 200 k

[SHIFT]

 button

: ON (light up SET UP and

PLAY MODE)

Preset 

[4]

 (PLAY MODE)

n 

[5]

 (

n) buttons

: WIDE mode

L-CH Stereo separation: A-B
R-CH Stereo separation: C-D
The separations of both channels should be equal.

Specification: Separation more than 24 dB

Adjustment Location: See page 18.

FM Stereo

Level meter

Level meter

signal generator

connection

reading (dB)

output channel

L-CH

L-CH

A

B

R-CH

L-CH

Adjust RV3 on TUX10

for minimum reading.

R-CH

R-CH

C

D

L-CH

R-CH

Adjust RV3 on TUX10

for minimum reading.

FM RF signal

generator

Carrier frequency : 97.9 MHz
Output level

: 70 dB (3.2 mV)

Mode

: stereo

Modulation

: main : 1 kHz, 33.75 kHz deviation (45%)
  sub : 1 kHz, 33.75 kHz deviation (45%)

:

 19 kHz pilot: 7.5 kHz deviation (10%)

0.01 

µ

F

set

antenna jack

+
–

LINE OUT REAR jack 
(CN780)

level meter

10 k

Ω

[SOURCE]

 button

: FM

FREQUENCY SELECT switch
(E model)

: FM 200 k

[SHIFT]

 button

: ON (light up SET UP and

PLAY MODE)

Preset 

[4]

 (PLAY MODE)

n 

[5]

 (

n) buttons

: NARROW mode

L-CH Stereo separation: A-B
R-CH Stereo separation: C-D
The separations of both channels should be equal.

Specification: Separation more than 18 dB

Adjustment Location: See page 18.

FM RF signal

generator

Carrier frequency : 97.9 MHz
Output level

: 70 dB (3.2 mV)

Mode

: stereo

Modulation

: main : 1 kHz, 33.75 kHz deviation (45%)
  sub : 1 kHz, 33.75 kHz deviation (45%)

:

 19 kHz pilot: 7.5 kHz deviation (10%)

0.01 

µ

F

set

antenna jack

+
–

LINE OUT REAR jack 
(CN780)

level meter

10 k

Ω

FM Stereo

Level meter

Level meter

signal generator

connection

reading (dB)

output channel

L-CH

L-CH

A

B

R-CH

L-CH

Adjust RV4 on TUX10

for minimum reading.

R-CH

R-CH

C

D

L-CH

R-CH

Adjust RV4 on TUX10

for minimum reading.