Sony ICF-M60LRDS / ICF-M60SRDS Service Manual ▷ View online
ICF-M60LRDS/M60SRDS
4
• This set can be disassembled in the order shown below.
3-1.
DISASSEMBLY FLOW
SECTION 3
DISASSEMBLY
SET
3-2. CABINET (FRONT) ASSY
(page 4)
3-3. CHASSIS BLOCK
(page 5)
3-5. KEY BOARD
(page 6)
3-4. MAIN BOARD
(page 5)
Note:
Follow the disassembly procedure in the numerical order given.
3-2.
CABINET (FRONT) ASSY
1
six screws
(BTP 3
(BTP 3
×
14)
7
Remove two solders.
8
Remove a solder.
9
cabinet (front) assy
5
2
button (tune)
6
ring spring (jog)
3
button (vol)
4
button (tone)
ICF-M60LRDS/M60SRDS
5
3-4.
MAIN BOARD
3-3.
CHASSIS BLOCK
1
Remove two solders.
1
Remove four solders.
6
chassis block
4
claw
5
antenna contact plate
2
screw (BTP 3
×
14)
3
telescopic antenna (ANT1)
3
Remove
eight solders.
eight solders.
9
main board
8
harness
5
Remove seven solders.
main board
7
Remove
four solders.
four solders.
1
four claws
2
4
flexible board
(8p)
(8p)
6
flexible board
(7p)
(7p)
ICF-M60LRDS/M60SRDS
6
3-5.
KEY BOARD
3
claw
4
chassis block
5
key board
2
two screws
(BTP 3
(BTP 3
×
10)
1
arm (jog)
7
ICF-M60LRDS/M60SRDS
no mark: M60LRDS
(
): M60SRDS
MW VCO VOLTAGE ADJUSTMENT
Adjustment Part
Frequency Display
Reading on Digital Voltmeter
L5
531 kHz
2.55
± 0.05 V (2.7 ± 0.05 V)
Confirmation
1602 kHz
8.7
± 0.5 V (9.6 ± 0.5 V)
no mark: M60LRDS
(
): M60SRDS
MW TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter
L6-1 (L4)
603 kHz
CT2
1404 kHz
LW VCO VOLTAGE ADJUSTMENT (M60LRDS)
Adjustment Part
Frequency Display
Reading on Digital Voltmeter
CT5
153 kHz
2.35
± 0.05 V
Confirmation
279 kHz
9.6
± 0.5 V
LW TRACKING ADJUSTMENT (M60LRDS)
Adjust for a maximum reading on level meter
L6-2
162 kHz
CT3
243 kHz
SW VCO VOLTAGE ADJUSTMENT (M60SRDS)
Adjustment Part
Frequency Display
Reading on Digital Voltmeter
L8
5800 kHz
2.6
± 0.05 V
Confirmation
15900 kHz
9.6
± 0.5 V
SW TRACKING ADJUSTMENT (M60SRDS)
Adjust for a maximum reading on level meter
L7
5800 kHz
CT6
15900 kHz
FM VCO VOLTAGE CONFIRMATION
Adjustment Part
Frequency Display
Reading on Digital Voltmeter
Confirmation
87.5 MHz
1.3
± 0.3 V
Confirmation
108 MHz
8.5
± 1.5 V
FM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter
L1, 2
87.5 MHz
CT1
108 MHz
Adjustment Location: MAIN board (See page 9)
0 dB=0.280 mV
[AM (MW/LW)]
Setting:
BAND button : MW or LW
BAND button : MW or LW
[AM (SW)] (M60SRDS)
Setting:
BAND button: SW
BAND button: SW
[FM]
Setting:
BAND button: FM
BAND button: FM
• Repeat the procedures in each adjustment several times, and the
tracking adjustments should be finally done by the trimmer ca-
pacitors.
pacitors.
• Remove FM antenna in FM adjustment.
SECTION 4
ELECTRICAL ADJUSTMENTS
AM IF ADJUSTMENT
Adjust for a maximum reading on level meter
T1
450 kHz
AM RF signal
generator
30% amplitude
modulation by
400 Hz signal
Output level:
as low as possible
modulation by
400 Hz signal
Output level:
as low as possible
Put the lead-wire
antenna close to
the set.
antenna close to
the set.
+
–
–
level meter
set
8.0
Ω
JACK board
TP (SP OUT –)
TP (SP OUT –)
JACK board
TP (SP OUT +)
TP (SP OUT +)
AM RF signal
generator
30% amplitude
modulation by
400 Hz signal
Output level:
as low as possible
modulation by
400 Hz signal
Output level:
as low as possible
+
–
–
level meter
JACK board
TP (SP OUT –)
TP (SP OUT –)
JACK board
TP (SP OUT +)
TP (SP OUT +)
set
8.0
Ω
11 pF
MAIN board
TP (GND)
TP (GND)
MAIN board
TP (ANT IN)
TP (ANT IN)
FM RF signal
generator
22.5 kHz frequency
deviation by 400 Hz
signal
Output level:
as low as possible
deviation by 400 Hz
signal
Output level:
as low as possible
+
–
–
level meter
JACK board
TP (SP OUT –)
TP (SP OUT –)
JACK board
TP (SP OUT +)
TP (SP OUT +)
set
8.0
Ω
0.01
µ
F
MAIN board
TP (GND)
TP (GND)
MAIN board
TP (ANT IN)
TP (ANT IN)
digital voltmeter
TP (VT)
TP (GND)
100 k
Ω
MAIN board