Sony ICF-C111 Service Manual ▷ View online
5
ICF-C111
• The equipment can be removed using the following procedure.
SECTION 3
DISASSEMBLY
Note : Follow the disassembly procedure in the numerical order given.
3-1. PANEL (FRONT)
Set
Panel (Front)
Cabinet (Upper) Assy
Chassis Section
Main Board
1
screws (P 3x10)
claw
claw
claw
claws
2
panel (front)
6
ICF-C111
3-2. CABINET (UPPER) ASSY
3-3. CHASSIS SECTION
1
screws (P 3x30)
3
cabinet (upper) assy
2
screws (P 3x30)
2
screw (P 3x10)
3
chassis section
1
CN701
from MAIN board
from speaker
7
ICF-C111
3-4. MAIN BOARD
1
screw (P 3x10)
2
MAIN board
claw
claw
8
ICF-C111
FM FREQUENCY COVERAGE ADJUSTMENT
Adjust for a maximum reading on level meter.
L4
CT4
86.5 MHz
109.5 MHz
FM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
L3
CT3
86.5 MHz
109.5 MHz
AM IF ADJUSTMENT
Adjust for a maximum reading on level meter.
T1
455 kHz
AM FREQUENCY COVERAGE ADJUSTMENT
Adjust for a maximum reading on level meter.
L2
CT2
520 kHz
1,750 kHz
AM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
L1
CT1
600 kHz
1,400 kHz
FM SECTION 0 dB = 1 µV
Setting:
BAND switch: FM
VOLUME switch: MIN
BAND switch: FM
VOLUME switch: MIN
AM SECTION
Setting:
BAND switch: AM
VOLUME switch: MIN
BAND switch: AM
VOLUME switch: MIN
SECTION 4
ELECTRICAL ADJUSTMENTS
FM lead wire
antenna terminal
antenna terminal
0.01
µ
F
FM RF signal
generator
generator
400Hz, 30% FM modulation
frequency deviation
frequency deviation
±
22.5kHz
Output level: as low as possible
set
Put the lead-wire
antenna close to
the set.
antenna close to
the set.
AM RF signal
generator
generator
400Hz, 30%
AM modulation
Output level: as low as possible
AM modulation
Output level: as low as possible
• Connecting Level Meter (FM and AM)
Repeat the procedures in each adjustment several times, and the
frequency coverage and tracking adjustments should be finally done
by the trimmer capacitors.
frequency coverage and tracking adjustments should be finally done
by the trimmer capacitors.
speaker terminal
set
16
Ω
level meter
(range: 0.5–5 V ac)
(range: 0.5–5 V ac)
Adjustment Location: See page 9.
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