Sharp WF-2100BK, Service Manual

Page: 10 / 24

WF-2100W
– 10 –
A
B
C
D
E
F
G
H
1 2
3 4 5
6
• NOTES ON SCHEMATIC DIAGRAM can be found on page 8.
Figure 10 SCHEMATIC DIAGRAM (1/2)
D101
1N4148
D102
1N4148
SW101-C
BAND
SELECTOR
SW101-F
BAND
SELECTOR
IC101
LA1186N
FM FRONT END
BAND PASS
FILTER
BP101
C101
0.001
C104 0.001
L102
C106
15P(CH)
VC2
TC2
C102
0.001
R122
10
C103
10/16
C139
0.022
D103
1N4148
C140
0.1
T108
R102
33
C107 15P(CH)
VC1 TC1
C108
20P(CH)
L101
C109
5P(CH)
R103
220K
R104
820K
C110
0.022
C138
220/16
C137
0.022
C142
330P(CH)
T106
R101
100
R105
100
L103
T101
T102
C143
15P
(CH)
TC4
SW101-E
BAND
SELECTOR
R121 3.9K
CT104
10P
CT103
10P
C144
5P(CH)
VC3
CF101
C136
0.0022
(ML)
R120 2.7K
C135
0.0082(ML)
C133 3.3/50
C134
470P
C131
0.0015(ML)
R119 15K
VR102
10K(B)
SW203-B
DUBBING
SPEED
C132 3.3/50
R118
100K
IC102
C121
0.022
C123 0.022
C124 22/16
CF102
T107
R125
100K
R123
1.2K
C125
0.0082
C126
0.0082
C127 1/50
R113 27K
R114 4.7K R116 4.7K
R115 27K
C128 1/50
R117
10
C129
1/50
C130
0.022
R126
100
VD101
1S2638
C116
0.022
R106
100K
R108
10K
C117
0.022
R107
100K
CON101
CN101
SW101-D
BAND
SELECTOR
C115
5P
(CH) VC4
C112 30P(CH)
C111
330P(CH)
C105
8P(CH)
C113
0.0015(ML)
C114
0.0047(ML)
TC3
CT102
10P
CT101
10P
C118
0.022
R111
47
R110
47
T103
T104
T105
SW101-A
BAND
SELECTOR
R112
47
C119
0.022
C120
10/16
C122
0.022
R109 22K
VR101
100K(B)
IC102
LA1805
FM/AM IF MPX.
SW501-
FUNCTIO
SELECTO
S
FU
SE
R266
4.7K
R265
4.7K
R264
47K
R263
47K
JK202
LINE INPUT
D201
1N4148
R259
220
C280
1/50
R230 10K
R261 18K
R262 18K
MIC1
BUILT-IN
MICROPHONE
JK201
MIC
CN206
IC202
BA15218F
MIC AMP.
R273
2.2K
C243
2.2/50
R271
1K
Q208
SS8050
R274
10K
C245
220/16
C260 150P C247 150P
C248
100P
R248
270
R281
10K
R249 33K
C263
100/16
C281
10/16
R275 4.7K
R272
1M
D212
1N4148
R252 3.3K
C242
1/50
R241
2.2K
D203
1N4148
C244
10/16
R200
4.7K
R242
560
R243
10K
Q203
2SC945 AP
R254
10K
SW203-A
DUBBING
SPEED
D211
1N4148
D202
1N4148
R290 10K
R285
22K
R255
4.7K
Q212
KTC3875 GR
R256
22K
R283
10K
Q207
SS8550
D205
1N4148
C249
100/16
R299 10K
R298 10K
R260 10K
C250
100/16
C251
100/16
D207
1N4148
D209
1N4148
C257
47/16
D510
1N4148
D509
1N4148
R245
10K R232 10K
SW501-A
FUNCTION
SELECTOR
R229
2.2K
Q206
KTC3875 GR
D213
1N4148
R225 47K C518
0.0027(ML)
R508 3.9K
R509
330
Q504
SS8550
R510
100K
Q505
2SC2412 KR
Q506
2SC2412 KR
VR501
500(B)
C509
100/16
R514
10K
C508 0.022
R224 47K C517
0.0027(ML)
R222
12K
R512
10K
R511
10K
R226
10K
R227 10K
C262 100/16
C288
330/16
R217
100K
R215
1.2K
R218
100K
R216
1.2K
R250
3.3K
R251
3.3K
Q202
2SC2412 KR
Q201
2SC2412 KR
C225 10/16
R253 22K
R228 2.2K
D214
1N4148
R279 150
Q213
SS8550
R280
56K
D215
1N4148
R277
33K
D216
1N4148
R282
10K
D218
1N4148
C222
2.2/50
C220
0.001
R214 470K
C270 0.015
C218
10/16
R247
390
R212
1K
C253
0.0022(ML)
R210
180K
C267
330P
C230 47/16 R221 1M
C221
2.2/50
C219
0.001
R257
150
R220 10K
R213 470K
R244 390
C271 0.015
C217
10/16
R209
180K
R211
1K
C246
0.0022(ML)
R219 12K
C252 47/16
C213
2.2/50
C223 2.2/50
C224 330/16
Q204
KTC3875 GR
C261
82P
C228
0.0015
L202
47mH
R235
15K
C216
2.2/50
R284
47K
R206 180K
R208 5.6K
C214 2.2/50
R204
4.7K
C210
0.033
(ML)
R202
47
R520
56K
C208 22/16
C204 220P
C206
220P
R205
180K
C205 220P
C203
220P
C207 22/16
R207 5.6K
R521
56K
R201
47
C209
0.033
(ML)
R203
4.7K
IC201
IC201
TA8189N
RECORD/
PLAYBACK AMP.
C202
470P
C201
470P
R296
1K
R297
1K
R276
1K
R278
1K
R288
1K
R289
1K
C232 820P
CON201
CON202
R237 47K
Q220
KTC3875 GR
Q221
KTC3875 GR
R236 47K
C231 820P
Q217
KTC3875 GR
R295
4.7K
R294
3.3K
R293
3.3K
R292
4.7K
D219
1N4148
Q218
KTC3875 GR
Q219
KTC3875 GR
Q216
KTC3875 GR
L201
47mH
R234
15K
C215
2.2/50
C227
82P
C226
0.0015 C234 150P C233 150P
SW202-A
BEAT
CANCEL
C235
180P(CH)
C237
0.0022(ML)
D217
1N4148
R287
1.8K
Q205
3DA8050
R239
10
C240
0.0022(ML)
C239
0.001(ML)
R238
33K
C238
0.022(ML)
C241
100/16
T201
BIAS OSC.
R286
47K
R240
2.2K
R223
12K
R131
10K
R129 3.3K
R128
33K
C269
10/16
R524
4.7K
L203
2.7mH
L204
2.7mH
C268 330P
FM/SW
ROD
ANTENNA
FM
MW
SW1
SW2
FM
MW
SW1
SW2
1
2
3
1
2
3
1
2
3
1 2 3 4 5 6 7 8 9
FM IF
SW2
SW1
MW
FM
24 23 22 21 20 19 18 17 16 15 14 13
12 11 10 9 8 7 6 5 4 3 2 1
TP5
TP3
TP4
TP2
TP1
FM(ST)/
HIGH
FM(ST)/
NORMAL
FM(MONO)/
MIC
AM
OSC
STB
+VCC
AM RF
FM
DET DET OUT
AM IN
IF AD
MPX IN
MO/ST
VCO
NC AM/FM R-CH L-CH GND GND AM IF AGC AM MIX FM IF IN
SW101-B
BAND SELECTOR
FM
MW
SW1
SW2
1 3 2
1 3 2
FM
MW
SW1
SW2
FM
MW
SW1
SW2
FINE
TUNING
FINE TUNING
PWB-A3
CD/LINE
(ON)
RADIO
(ON)
TAPE
(STAND-BY)
CD/LINE
(ON)
RADIO
(ON)
TAPE
(STAND-BY
R-CH
L-CH
CD/LINE_IN(R)
CD/LINE_IN(L)
MIC_OUT(R)
MIC_OUT(L)
1
2
GND
5
6
7
8
4
3
2
1 VCC
GND
FM(ST)/HIGH
FM(ST)/
NORMAL
FM(MONO)/
MIC
CD/LINE
(ON)
RADIO
(ON)
TAPE
(STAND-BY)
TAPE
SPEED
1 2 3 4 5 6 7 8 9 10 11 12
13 14 15 16 17 18 19 20 21 22 23 24
CH2/A CH2/B MATAL
OUT
PRE OUT
MIX OUT
REC OUT
NF
GND1
M/N
GND
ALC VCC A/B NF CH1/B CH1/A REC IN REC NF REC OUT PRE OUT MATAL OUT
REC
NF
REC
IN
3
2
1
3
2
1
5
4
1
2
3
5
4
1
2
3
A B
R-CH
R-CH
L-CH
L-CH
SIDE-A
SIDE-B
SIDE-A
SIDE-B
A
A
B
B
TAPE 2
PLAYBACK HEAD
TAPE 1
RECORD/PLAYBACK HEAD
ERASE HEAD
SW1-A
TAPE 2
DIRECTION
SW1
TRACKING
fH
fL
CT104
T101
SW1 BAND
COVERAGE
fH
fL
CT102
T104
MW
TRACKING
SW2 BAND
COVERAGE
fH
fL
CT101
T105
MW BAND
COVERAGE
SW2
TRACKING
fH
fL
CT103
T102
+B
+B
+B
MW BAR ANT.
SW1 ANT.
SW2 ANT.
MW OSC.
SW1 OSC.
SW2 OSC.
AM IF
FM DET.
FM
TRACKING
FM OSC.
VCO
FM SIGNAL MW/SW1/SW2 SIGNAL
PLAYBACK SIGNAL
RECORD SIGNAL
MIC SIGNAL
CD/LINE SIGNAL