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– 5 –

Setting:
BAND switch: FM

Setting:
BAND switch: AM

Repeat the procedures in each adjustment several times, and the
frequency coverage and tracking adjustments should be finally done
by the trimmer capacitors.

FM  FREQUENCY  COVERAGE  ADJUSTMENT

Adjust for a maximum reading on level meter.

L4

CT4

86.5 MHz

109.5 Hz

FM  TRACKING  ADJUSTMENT

Adjust for a maximum reading on level meter.

CT3

Frequency max

AM FREQUENCY  COVERAGE  ADJUSTMENT

Adjust for a maximum reading on level meter.

L2

CT2

520 kHz

1,650 kHz

AM  TRACKING  ADJUSTMENT

Adjust for a maximum reading on level meter.

L1

CT1

600 kHz

1,400 kHz

AM  IF  ADJUSTMENT

Adjust for a maximum reading on level meter.

T1

455 kHz

+
–

FM RF SSG

±

 22.5 kHz frequency

deviation by 400 Hz
signal

FM lead wire antenna terminal

speaker terminal

0.01 

µ

F

set

level meter

+
–

AM RF SSG

Put the lead-wire
antenna close to
the set.

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

set

speaker terminal

level meter

• Adjusting Location: RADIO board (Component Side)

Confirm that the reading on the frequency counter is 900       Hz.

If frequency is higher, change capacitor value of C101.
If frequency is lower, change resistor value of R101.

+
–

frequency counter

10 pF

IC101 pin 

@¶

+ 200
– 100

T1:AM IF

ADJUSTMENT

L1: AM TRACKING

ADJUSTMENT

CT3:FM TRACKING

ADJUSTMENT

CT1:AM TRACKING

ADJUSTMENT

CT4:FM FREQUENCY

COVERAGE
ADJUSTMENT

CT2:AM FREQUENCY

COVERAGE
ADJUSTMENT

L4: FM FREQUENCY

COVERAGE
ADJUSTMENT

L2: AM FREQUENCY

COVERAGE
ADJUSTMENT

IC1

– 7 –

– 8 –

Ref. No. Location

D101

F-4

D201

F-6

D202

F-6

D203

C-7

D204

G-4

D205

G-3

IC1

D-4

IC101

G-4

LED101

H-4

Q1

F-2

Q201

D-6

Q202

D-7

• X

: parts extracted from the component side.

• Y

: parts extracted from the conductor side.

•

W

: indicates side identified with part number.

•

¢

: internal component.

• b

: Pattern from the side which enables seeing.

– 9 –

– 10 –

1

2

3

4

5

6

7

8

9

10

15

14

13

12

11

FM

DISCRIMINATOR

AF POWER AMP

AM FE

FM IF

TUNING

METER

AM IF DET AGC

FM FE

23

22

21

20

24

25

19

18 17 16

29 28 27 26

30

GND

GND

AF OUT

VCC

RIPPLE

FIL

TER

AF IN

DET OUT

AFC AGC

AFC AGC

IF GND

METER

N.C

FM IF IN

AM IF IN

FM/AM BAND

SELECT

FM/AM

IF OUT

FE GND

N.C

AM RF IN

FM RF

REG OUT

FM OSC

FM RF IN

AFC

AM OSC

VOL

NF

FM DISCRI

GND

GND

Note on Schematic Diagram:
• All capacitors are in µF unless otherwise noted.  pF: µµF

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.

•

¢

: internal component.

•

C

: panel designation.

•

U

: B+ Line.

•

H

: adjustment for repair.

• Voltages are dc with respect to ground under no-signal

(detuned) conditions.
no mark : FM
(

) : AM

∗

: Impossible to measure

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

Ω

).

Voltage variations may be noted due to normal produc-
tion tolerances.

• Signal path.

F

: FM

f

: AM

Note:
The components identi-
fied by mark 

!

 or dotted

line with mark 

!

 are criti-

cal for safety.
Replace only with part
number specified.

Note:
Les composants identifiés par
une marque 

!

 sont critiques

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

– 11 –

Les composants identifiés par une
marque 

! sont critiques pour la

sécurité.
Ne les remplacer que par une pièce
portant le neméro spécifié.

The components identified by
mark 

! or dotted line with mark

! are critical for safety.

Replace only with part number
specified.

• Items marked “*” are not stocked since they

are seldom required for routine service. Some
delay should be anticipated when ordering
these items.

• The mechanical parts with no reference num-

ber in the exploded views are not supplied.

• Accessories and packing materials are given

in the last of the electrical parts list.

NOTE:

• -XX and -X mean standardized parts, so they

may have some difference from the original
one.

• Color Indication of Appearance Parts

Example:
KNOB, BALANCE (WHITE) . . . (RED)

↑

↑

Parts Color Cabinet's Color

Ref. No.

Part No.

Description

Remark

Ref. No.

Part No.

Description

Remark

1

3-930-826-01 BUTTON

2

3-930-823-21 CABINET (UPPER)

3

3-930-827-01 KNOB (FUNCTION)

4

1-535-804-11 SNAP, BATTERY

* 5

A-3679-957-A RADIO BOARD, COMPLETE

6

3-922-610-01 HOLDER (ANTENNA)

7

7-685-647-79 SCREW +P 3X10 TYPE2 NON-SLIT

8

3-930-828-01 KNOB (TUNING)

9

3-919-268-01 KNOB (VOL)

10

3-930-829-01 POINTER (INCLUDING 

rA: MARKER)

! 11

1-769-339-22 CORD, POWER

12

3-930-824-01 CABINET (LOWER)

13

7-685-154-19 SCREW +P 3X35 TYPE2 NON-SLIT

14

3-368-852-01 FOOT

15

3-369-135-21 LID, BATTERY CASE

16

3-899-693-61 PLATE, INDICATION

SP1

1-504-748-21 SPEAKER (6.6CM)

! T101

1-427-927-11 TRANSFORMER, POWER

not supplied

r

A

SP1

T101

not supplied
(SECONDRY board)

not supplied
(PRIMARY board)

(including 

r

A)