Read Sony ICF-SW40 (serv.man3) Service Manual online
02
2
3
4
5
6
7
A
1
B
C
D
E
F
[KEY BOARD]
BCE
BCE
BCE
BCE
11
(11)
1-671-939-
S207
POWER
S201
LIGHT
S208
PRESET/
MANUAL
S209
ENTER
/CLOCK
S206
SW
STANDBY MODE
S205
DISPLAY
MODE
S203
LW/MW
STANDBY TIME1
S202
FM
STANDBY TIME2
S204
SLEEP
D204
TUNE
A
MAIN BOARD
CN1
S211
NORMAL
FINE
CN201
1
5
2
15
10
19
18
1
5
10
15
21
LCD201
LIQUID CRYSTAL
DISPLAY
R269
R268
C218
C216
C215
C214
JC201
JC207
JC219
JC218
JC213
JC210
JC217
JC216
JC215
JC205
JC203
JC208
JC206
JC204
S210
HOLD
OFF
nON
D203
(BACK-LIGHT)
Q207
Q204
C212
C213
C210
C211
C205
C203
C235
C209
C217
C222
C221
C220
C232
C230
C223
C208
C204
R211
R212
R248
R264
R265
R231
R259
R209
R209
R219
R220
R221
R223 R222
R220
R221
R223 R222
R207
R201
R205
R206
R206
R202
R229
R230
R255
R230
R255
C900
R232
R233
R234
R235
R236
R237
R238
R239
R240
R241
R233
R234
R235
R236
R237
R238
R239
R240
R241
R242
R243
R244
R245
R246
R256
R261
R251
R252
R252
R263
R213
R214
R214
R215
R216
R216
R267
R226
R210
R217
R218
R272
R224
R271
R225
R227
R228
R262
R247
R257
R270
JC221
JC211
JC214
R208
R203
R260
R258
R204
C219
C231
C229
C227
C228
C228
C226
C225
C207
C224
C201
S
D
G
B E
C
JC212
3
2
1
2
1
3
2
1
2
1
IC203
IC202
R903
C234
JC209
3
2
1
2
1
IC204
D202
R266
Q202
Q201
C202
Q203
Q205
D201
JW204
JW203
JW201
JW202
C233
JC202
X201
Q206
Q208
IC201
1
5
10
14
15
20
25
28
29
30
35
40
42
43
45
50
55
56
TP101
– 13 –
– 14 –
– 11 –
– 12 –
Note:
• All capacitors are in
• All capacitors are in
µ
F unless otherwise noted. pF:
µµ
F
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.
•
U
: B+ Line.
• Power voltage is dc 4.5V and fed with regulated dc power
supply from external power voltage jack (J2).
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
no mark : FM
(
no mark : FM
(
) : MW/LW
<
> : SW
• Voltages are taken with a VOM (Input impedance 10 M
Ω
).
Voltage variations may be noted due to normal produc-
tion tolerances.
tion tolerances.
• Waveforms are taken with a oscilloscope.
• Circled numbers refer to waveforms.
• Abbreviation
• Circled numbers refer to waveforms.
• Abbreviation
EA
: Saudi Arabia
IT
:Italian
Note:
•
•
X
: parts extracted from the component side.
•
b
: Pattern from the side which enables seeing.
Abbreviation
EA
EA
: Saudi Arabia
IT
:Italian
r
WAVEFORMS
1
IC201
@¢
(XO)
VOLT/DIV : 0.5 V AC
TIME/DIV : 5
TIME/DIV : 5
µ
sec
1.8 Vp-p
75 kHz
r
PRINTED WIRING BOARDS (KEY SECTION)
r
SCHEMATIC DIAGRAM (KEY SECTION)
D201
E-3
D202
E-3
D203
A-6
D204
B-3
IC201
D-5
IC202
B-5
IC203
B-5
IC204
E-3
Q201
E-4
Q202
E-4
Q203
D-4
Q204
C-3
Q205
E-5
Q206
E-6
Q207
B-6
Q208
E-6
Ref. No.
Location
r
Semiconductor
Location
ICF-SW40
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