Read Sony ICF-C620L Service Manual online
– 1 –
SERVICE MANUAL
Radio section
Frequency range :
FM : 87.5 – 108.0 MHz
MW : 530 – 1,605 kHz
LW : 153 – 255 kHz
MW : 530 – 1,605 kHz
LW : 153 – 255 kHz
Tape player section and general
Time display
UK model
12 hour
AEP model
24 hour
Track system :
2 track, 1 channel, monaural
Frequency response :
125 – 10,000 Hz with
normal (TYPE I) tapes
Speaker :
Approx. 7.7 cm dia. 8 ohms.
Power output :
Radio section : 350 mW (at 10% harmonic
distortion)
Player section : 300 mW (at 10% harmonic
distortion)
Power requirements :
220 V – 230 V AC, 50 Hz
For the power backup function : 9 V DC, one
6F22 battery
For the power backup function : 9 V DC, one
6F22 battery
Battery life :
Approx. 80 hours (for clock backup),
using Sony battery S-006P (U)
Dimensions :
Approx. 240
×
124
×
100 mm
(w/h/d) incl. projecting parts and controls
Mass :
Approx. 870 g not incl. battery
Design and specifications are subject to change
without notice.
without notice.
SPECIFICATIONS
FEATURES
• High quality sound by tape playback.
• You can choose from 3 different wake-up
• You can choose from 3 different wake-up
modes ; tape, radio, and buzzer alarm.
• Power backup to keep the clock during a
power interruption with a 6F22 battery (not
supplied) installed.
supplied) installed.
Model Name Using Similar Mechanism
NEW
Tape Transport Mechanism Type
MR-620
FM/MW/LW CASSETTE PLAYER
CLOCK RADIO
CLOCK RADIO
MICROFILM
AEP Model
UK Model
ICF-C620L
– 2 –
TABLE OF CONTENTS
1. SERVICE NOTE
...............................................................
2
2. GENERAL
..........................................................................
3
3. DISASSEMBLY
3-1. Cabinet (Rear) Assy ........................................................... 4
3-2. Power Transformer ............................................................. 4
3-3. Main Board ......................................................................... 5
3-4. Lid (Cassette) ..................................................................... 6
3-5. Machanism Deck Assy ....................................................... 6
3-6. Pointer Setting .................................................................... 7
3-2. Power Transformer ............................................................. 4
3-3. Main Board ......................................................................... 5
3-4. Lid (Cassette) ..................................................................... 6
3-5. Machanism Deck Assy ....................................................... 6
3-6. Pointer Setting .................................................................... 7
4. MECHANICAL ADJUSTMENTS
................................
8
5. ELECTRICAL ADJUSTMENTS
5-1. Tape Player Section ............................................................ 8
5-2. Radio Section ..................................................................... 9
5-2. Radio Section ..................................................................... 9
6. DIAGRAMS
6-1. Printed Wiring Boards ...................................................... 10
6-2. Schematic Diagram .......................................................... 13
6-2. Schematic Diagram .......................................................... 13
7. EXPLODED VIEWS
7-1. Rear Cabinet Section ........................................................ 16
7-2. Front Cabinet Section ....................................................... 17
7-3. Mechanism Deck Section ................................................. 18
7-2. Front Cabinet Section ....................................................... 17
7-3. Mechanism Deck Section ................................................. 18
8. ELECTRICAL PARTS LIST
...................................
19
SECTION 1
SERVICE NOTE
• SETTING THE POWER CORD
Set the power cord as illustrated below, then install the lower cabi-
net.
net.
Power cord
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY MARK
!
OR DOTTED LINE
WITH MARK
!
ON THE SCHEMATIC DIAGRAMS AND IN
THE PARTS LIST ARE CRITICAL TO SAFE OPERATION.
REPLACE THESE COMPONENTS WITH SONY PARTS WHOSE
PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR
IN SUPPLEMENTS PUBLISHED BY SONY.
REPLACE THESE COMPONENTS WITH SONY PARTS WHOSE
PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR
IN SUPPLEMENTS PUBLISHED BY SONY.
– 3 –
This section extracted from
instruction manual.
instruction manual.
SECTION 2
GENERAL
– 4 –
SECTION 3
DISASSEMBLY
Note : Follow the disassembly procedure in the numerical order given.
3-1. CABINET (REAR) ASSY
3-2. POWER TRANSFORMER
Note : When installing, position the battery snap wire
as shown in Fig. 1.
1
P 3x12
4
claw
5
CN150
6
cabinet (rear) assy
3
P 3x12
4
shield plate (trans A)
5
battery snap
1
claw
Fig. 1
2
LOCK board
2
P 3x12
3
P 3x12
6
power transformer