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– 9 –

0 dB=0.775 V

1. The adjustments should be performed in the order given in the

service manual. (As a general rule. Playback circuit adjust-
ment should be completed before performing recording cir-
cuit adjustment.)

2. The adjustments should be performed for both L-ch and R-ch

unless otherwise indicated.

•

Switch and control position
FUNCTION switch ............................. TAPE (RADIO OFF)
BALANCE control ............................. center click
MEGA BASS control ......................... mechanical center
BALANCE control ............................. center click
PRESET MODE switch ...................... MANUAL
VOLUME control ............................... maximum

Procedure:
Mode: FWD/REV playback (DECK A)

FWD playback (DECK B)

1. Set playback mode (normal speed).
2. Make sure that the value indicated on the frequency counter

falls into the specification.

3. If out of specification, adjust RV303 so that the value on the

frequency counter becomes 3 kHz.

Specifications: 2,985 to 3,015 Hz

4. Adjust so that the frequency at the beginning and that at the

end of tape winding are between 2,970 and 3,030 Hz.

5. Set high speed dubbing mode.
6. Confirm so that the value on the frequency counter is between

5,300 and 6,300 Hz.

7. Confirm frequency difference the beginning and the end of

the tape should be within 1%.

Adjustment Location: MAIN board (See page 11)

SP Out

Phones

Load impedance

6 

Ω

32 

Ω

Output  level

0.775 V (0 dB)

0.25 V (–10 dB)

Type

Signal

Used for

WS-48B

3 kHz, 0 dB

Tape speed adjustment

+

–

set

32 

Ω

frequency 
counter

PHONES jack (J301)

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

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

swab:

record/playback head

pinch rollers

playback head

rubber belts

erase head

idlers

capstan

2. Demagnetize the record/playback head with a head demagne-

tizer. (Do not bring the head demagnetizer 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.

Mode

Torque Meter

Meter Reading

Playback

CQ-102C

30 – 75 g•cm

(0.42 – 1.04 oz•inch)

Back tension

CQ-102C

1.5 – 6.0 g•cm

(0.021 – 0.083 oz•inch)

Rewind

Deck-A: More than 60 g•cm

CQ-201B

(More than 0.84 oz•inch)

Fast forward

Deck B: More than 50 g•cm

(More than 0.70 oz•inch)

Tension Meter

Meter Reading

CQ-403A

Deck-A: More than 90 g (3.18 oz)

Deck-B: More than 100 g (3.53 oz)

– 10 –

0 dB=1 µV

Setting:
FUNCTION switch : RADIO
BAND switch : FM

Setting:
FUNCTION switch : RADIO
BAND switch : MW

Setting:
FUNCTION switch : RADIO
BAND switch : SW1/SW2
FINE TUNING knob ...................................... mechanical center

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

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

(

): Saudi Arabia model

FM  FREQUENCY  COVERAGE  ADJUSTMENT

Adjust for a maximum reading on level meter.

L2 (L21)

86.5 MHz (87.35 MHz)

CT2

109.5 MHz (107.8 MHz)

FM  TRACKING  ADJUSTMENT

Adjust for a maximum reading on level meter.

L1

86.5 MHz (87.35 MHz)

CT1

109.5 MHz (107.8 MHz)

AM  IF  ADJUSTMENT

Adjust for a maximum reading on level meter.

T1

455 kHz

MW  FREQUENCY  COVERAGE  ADJUSTMENT

Adjust for a maximum reading on level meter.

L4

520 kHz (516 kHz)

CT4

1,680 kHz (1,630 kHz)

MW  TRACKING  ADJUSTMENT

Adjust for a maximum reading on level meter.

L3

600 kHz

CT3

1,400 kHz

SW1  FREQUENCY  COVERAGE  ADJUSTMENT

Adjust for a maximum reading on level meter.

L6

2.2 MHz

CT6

7.3 MHz

SW1  TRACKING  ADJUSTMENT

Adjust for a maximum reading on level meter.

L5

2.2 MHz

CT5

7.3 MHz

SW2  FREQUENCY  COVERAGE  ADJUSTMENT

Adjust for a maximum reading on level meter.

L8

6.8 MHz

CT8

22.5 MHz

SW2  TRACKING  ADJUSTMENT

Adjust for a maximum reading on level meter.

L7

6.8 MHz

CT7

22.5 MHz

Procedure:
1. Connect the frequency counter to pin 4 and 7 of IC1 as shown

the figure below.

2. Tune the set to 98 MHz.
3. Adjust RV1 for 76 kHz reading on the frequency counter.

Specifications: 75.95 kHz to 76.05 kHz.

Adjustment Location: TUNER board (See page 11)

Put the lead-wire
antenna close to 
the set.

AM RF SSG

30% amplitude modulation by
400 Hz signal
output level: as low as possible

FM RF SSG

0.01 

µ

F

TUNER board

CNP1

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

AM RF SSG

12 pF

30% amplitude modulation by
400 Hz signal
output level: as low as possible

TUNER board

CNP1

+
–

set

32 

Ω

PHONES jack (J301)

level meter

0.001 

µ

F

FM RF SSG

Carrier frequency : 98 MHz
Modulation

: no modultion

Output level

: 0.1 V (100 dB)

TUNER board

CNP1

+
–

TUNER board

IC1 pin 

4

+

IC1 pin 

7

1 

µ

F

33 k

 

Ω

frequency counter

FM  IF  ADJUSTMENT

Adjust for a maximum reading on level meter.

T2

10.7 MHz

– 11 –

IC201

RV303 : Tape Speed Adjustment

[ MAIN BOARD ] 
(Component side)

IC1

1

4
7

SW1 Frequency 
Coverage
Adjustment 

CNP1
FM/SW telescopic
antenna terminal

L3: MW Tracking Adjustment







L6 

CT6

SW2 Frequency 
Coverage
Adjustment 







L8 

CT8

MW Frequency 
Coverage
Adjustment 







L4 

CT4

SW1 Tracking 
Adjustment 







L5 

CT5

SW2 Tracking 
Adjustment 







L7 

CT7

CT3:  MW Tracking Adjustment 

T1: AM IF Adjustment 

) L2 : Except Saudi Arabia model

L21: Saudi Arabia model

FM Tracking
Adjustment

L1 

CT1







FM Frequency
Coverage Adjustment

CT2 

L2/L21







T2: FM IF Adjustment 

RV1: FM VCO Adjustment 

[ TUNER BOARD ] 
(Component side)

– 13 –

– 14 –

18

20

16

13

19

24

22

FM

FRONT-END

FM IF/

DISCRI

DECORDER

AMP

SWITCH

1/2

COUNTER

1/2

COUNTER

AM IF/

DET

PD1

VCO

PD2

AM

FRONT-END

FINE TUNIG

CONTROL

Q1

BAND

SELECTOR

Q2

14

FM RF
IN

FM/AM

FE OUT

CF1, 2

CF3

FM
RF

26

FM
DISCRI

FM
IF IN

6

5

L-CH

OUT

R-CH

OUT

R-CH

TUNER L-CH

4

27

29

1

2

3

ST IND

AM
IF IN

PILOT DET

LPF2

15

BAND

SELECT

PILOT DET

LPF2

PLL

LPF1

PLL

LPF2

VCO

AM OSC

CT4

L4

MW OSC

VREF

VREF

L3

MW

FERRITE-ROD

ANTENNA

ANT1

FM/SW

TELESCOPIC

ANTENNA

L8

SW2 OSC

L6

SW1 OSC

CV4

VR1

FM OSC

AM RF
IN

L2 (Except Saudi Arabia model)

L21 (Saudi Arabia model)

FM OSC

L1

FM RF

FM/AM FRONT-END,

FM/AM DET, MPX

IC1

CV3

CT3

L7

SW2

ANT

CT7

L5

SW1

ANT

CT5

CT1

CT8

CT6

S1 (7/8)

S1 (8/8)

S1 (6/8)

S1 (2/8)

S1 (3/8)

S1 (4/8)

S1 (1/8)

CV1

CT2

CV2

FINE TUNING

CV1 – CV4

TUNING

CV1 – CV4

TUNING

MW

SW2

SW1

FM

S1

BAND

MW

SW2

SW1

FM

S1

BAND

MW

SW2

SW1

FM

S1

BAND

MW

SW2

SW1

FM

S1

BAND

+

RV1

FM VCO

CT8, L8

SW2 FREQUENCY

COVERAGE

CT6, L6

SW1 FREQUENCY

COVERAGE

CT2, L2

CT2, L21

FM FREQUENCY

COVERAGE

CT4, L4

MW FREQUENCY

COVERAGE

CT3, L3

MW

TRACKING

CT7, L7

SW2 TRACKING

CT1, L1

FM TRACKING

T1

AM IF

T2

FM IF

CT5, L5

SW1 TRACKING

L.P.F.

B.P.F.

B.P.F.

+

AUDIO B+

D3

S1 (5/8)

A

MUTING

B

(Page 15)

(Page 15)

• SIGNAL PATH

: FM/SW

: MW

05

R-ch: Same as L-ch.