Sony ICF-C255RC (serv.man2) Service Manual ▷ View online
ICF-C255RC
— 11 —
— 12 —
4-2.
SCHEMATIC DIAGRAM
Note on Schematic Diagram:
• All capacitors are in µF unless otherwise noted. pF: µµF
• All capacitors are in µF unless otherwise noted. pF: µµF
50 WV or less are not indicated except for electrolytics
and tantalums.
and tantalums.
• All resistors are in
Ω and
1
/
4
W or less unless otherwise
specified.
•
f
: internal component.
• C : panel designation.
• U : B+ Line.
• H : adjustment for repair.
• Voltages are dc with respect to ground under no-signal
• H : adjustment for repair.
• Voltages are dc with respect to ground under no-signal
(detuned) conditions.
no mark : FM
(
no mark : FM
(
) : MW/LW
∗
: 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.
tion tolerances.
• Signal path.
F
: FM
f
: MW/LW
The components identified by mark 0 or dotted
line with mark 0 are critical for safety.
Replace only with part number specified.
line with mark 0 are critical for safety.
Replace only with part number specified.
• Waveform
2Vp-p
1
IC100 wf (XOUT)
1V/div
14
µsec
10
µsec/div
— 15 —
Ref. No.
Part No.
Description
Remarks
Ref. No.
Part No.
Description
Remarks
SECTION 6
ELECTRICAL PARTS LIST
NOTE:
•
•
Due to standardization, replacements in the
parts list may be different from the parts
specified in the diagrams or the components
used on the set.
parts list may be different from the parts
specified in the diagrams or the components
used on the set.
•
-XX, -X mean standardized parts, so they
may have some difference from the original
one.
may have some difference from the original
one.
•
Items marked “*” are not stocked since they
are seldom required for routine service.
Some delay should be anticipated when
ordering these items.
are seldom required for routine service.
Some delay should be anticipated when
ordering these items.
•
CAPACITORS:
uF: µF
uF: µF
•
RESISTORS
All resistors are in ohms.
METAL: metal-film resistor
METAL OXIDE: Metal Oxide-film resistor
F: nonflammable
All resistors are in ohms.
METAL: metal-film resistor
METAL OXIDE: Metal Oxide-film resistor
F: nonflammable
•
COILS
uH: µH
uH: µH
The components identified by mark 0 or
dotted line with mark 0 are critical for safety.
Replace only with part number specified.
dotted line with mark 0 are critical for safety.
Replace only with part number specified.
•
SEMICONDUCTORS
In each case, u: µ, for example:
uA...: µA... , uPA... , µPA... ,
uPB... , µPB... , uPC... , µPC... ,
uPD..., µPD...
In each case, u: µ, for example:
uA...: µA... , uPA... , µPA... ,
uPB... , µPB... , uPC... , µPC... ,
uPD..., µPD...
When indicating parts by reference number,
please include the board name.
please include the board name.
1-674-952-11 FERRITE-ROD ANTENNA BOARD
**************************
< CAPACITOR >
C451
1-109-982-11 CERAMIC CHIP
1uF
10.00% 10V
C454
1-163-227-11 CERAMIC CHIP
10PF
0.50PF 50V
C455
1-163-019-00 CERAMIC CHIP
0.0068uF
10%
50V
C456
1-163-989-11 CERAMIC CHIP
0.033uF
10%
25V
C457
1-163-021-91 CERAMIC CHIP
0.01uF
10.00% 50V
C459
1-136-682-11 FILM
0.0039uF
5.00%
100V
C460
1-163-133-00 CERAMIC CHIP
470PF
5%
50V
< IC >
IC451
8-759-599-59 IC U4226B-MFSG3
< COIL >
L401
1-754-082-11 ANTENNA, FERRITE-ROD (LW)
< RESISTOR >
R453
1-216-295-91 SHORT
0
R456
1-216-295-91 SHORT
0
R458
1-216-295-91 SHORT
0
R459
1-216-295-91 SHORT
0
R460
1-216-097-91 RES-CHIP
100K
5%
1/10W
R461
1-216-121-91 RES-CHIP
1M
5%
1/10W
< VIBRATOR >
X451
1-767-219-11 FILTER, CRYSTAL
*************************************************************
1-676-850-11 KEY BOARD
*********
< CONNECTOR >
* CN200
1-580-187-11 SOCKET, CONNECTOR 8P
< JUMPER >
JC200
1-216-296-91 SHORT
0
< SWITCH >
S200
1-692-014-11 SWITCH, KEY BOARD (+)
S201
1-692-014-11 SWITCH, KEY BOARD (-)
S202
1-692-014-11 SWITCH, KEY BOARD (OFF)
S203
1-692-014-11 SWITCH, KEY BOARD (BAND)
S204
1-692-014-11 SWITCH, KEY BOARD (ON)
S205
1-692-014-11 SWITCH, KEY BOARD (M1)
S206
1-692-014-11 SWITCH, KEY BOARD (M2)
S207
1-692-014-11 SWITCH, KEY BOARD (M3)
S208
1-692-014-11 SWITCH, KEY BOARD (M4)
S209
1-692-014-11 SWITCH, KEY BOARD (M5)
S210
1-692-014-11 SWITCH, KEY BOARD (D.S.T)
S211
1-692-014-11 SWITCH, KEY BOARD (SNOOZE)
S212
1-692-014-11 SWITCH, KEY BOARD (A-RESET)
S213
1-692-014-11 SWITCH, KEY BOARD (CLOCK)
S214
1-692-014-11 SWITCH, KEY BOARD (TIME+)
S215
1-692-014-11 SWITCH, KEY BOARD (TIME-)
**************************************************************
1-676-852-11 LED BOARD
*********
< DIODE >
D9
8-719-079-31 LED SLI-342YCT32-RS (B)
D10
8-719-079-31 LED SLI-342YCT32-RS (A)
**************************************************************
*
A-3663-591-A MAIN BOARD, COMPLETE
*********************
< FILTER >
BPF1
1-236-022-11 FILTER, BAND PASS
< CAPACITOR >
C1
1-163-253-11 CERAMIC CHIP
120PF
5.00%
50V
C2
1-163-133-00 CERAMIC CHIP
470PF
5%
50V
C3
1-163-251-11 CERAMIC CHIP
100PF
5.00%
50V
C4
1-163-141-00 CERAMIC CHIP
0.001uF
5%
50V
C5
1-163-021-91 CERAMIC CHIP
0.01uF
10.00% 50V
C6
1-163-227-11 CERAMIC CHIP
10PF
0.50PF 50V
C7
1-163-141-00 CERAMIC CHIP
0.001uF
5%
50V
C8
1-126-964-11 ELECT
10uF
20.00% 50V
C9
1-126-963-11 ELECT
4.7uF
20.00% 50V
C10
1-126-964-11 ELECT
10uF
20.00% 50V
C11
1-163-085-00 CERAMIC CHIP
2PF
50V
C13
1-163-021-91 CERAMIC CHIP
0.01uF
10.00% 50V
C14
1-163-809-11 CERAMIC CHIP
0.047uF
10%
25V
C15
1-164-489-11 CERAMIC CHIP
0.22uF
10.00% 16V
C16
1-163-989-11 CERAMIC CHIP
0.033uF
10%
25V
C17
1-163-021-91 CERAMIC CHIP
0.01uF
10.00% 50V
C18
1-163-021-91 CERAMIC CHIP
0.01uF
10.00% 50V
C19
1-128-551-11 ELECT
22uF
20.00% 25V
C20
1-163-021-91 CERAMIC CHIP
0.01uF
10.00% 50V
C21
1-163-231-11 CERAMIC CHIP
15PF
5.00%
50V
MAIN
FERRITE-ROD ANTENNA
KEY
LED
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