1.2 @ 530
7 @ 1710
PG2 D/1
+10V
+10V
+5V
+5V
PG2 C/1
2.2 (FM) 0 (AM)
7 (FM) 0 (AM)
1.3 @ 87.7
6.8 @ 107.9
PG2 C/1
PG2 D/1
0 (AM)
10 (FM)
Q101
146818
Q102
187601-001
10 (AM)
0 (FM)
PG2 C/4
+10V
PG2 C/1
PG2 B/1
PG2 C/4
3.5
8.5
3.5
3.5
8.5
8.5
1.2
4
4
5
5
10
11
12
13
14
15
_FMIFIn
1
_AMMixOut
2
3
_FMIFBypass
4
_AMIFIn
5
_Gnd
_Tu_LED
6
_St_LED
7
_Vcc
8
_FM_Disc
9
_AM_NB_CF
_FM_SMeter
1
_AM_SMeter
_IFBufOut
_PLL_LPF
4
_Pilot
U101
254561-001
FMSDAdj_
AMRFIn_
AM_AGC_
AMDetOut_
FMDetOut_
LDecOut_
RDecOut_
RAmpIn_
PG2 C/4
AMOsc_
VReg_
AFC_
DecIn_
LAmpIn_
LOut_
ROut_
2.2 (FM)
2 (AM)
30
29
6
28
27
26
25
24
23
22
22
21
20
20
19
19
18
17
17
16
6
3.5
3.5
3.5
3.5
0.5 (AM)
0.5 (AM)
3.2
2.8
3.2
3.2
4.2
4.2
4.1
4.1
+10V
PG2 D/7
PG2 C/8
PG2 C/8
+10V
PG2 C/4
PG2 D/2
PG2 C/4
+10V
6
8
1/2
7
4
5
U104
148584
SD256131 REV 01
SHEET 1 OF 3
AV28 SERVICE MANUAL 264563
+10V
+5V
+5V
+5V
+10V
+5V
+5V
+5V
+5V
+10V
+12V
+5V
+5V
1
2
3
4
5
6
7
8
9
10
1
11
12
13
14
15
16
17
18
19
20
21
22
24
23
2.5
5 (FM)
5 (AM)
0.2 (FM)
10 (AM)
2.3 (FM)
5 (FM)
0.2 (AM)
5 (FM)
0.2 (AM)
5
5
2.4 (AM)
2.2 (FM)
5
2
2.4
PG3 D/5
PG3 B/3
PG1 B/2
PG1 B/1
VRAW (+33V)
VRAW (+33V)
PG1 A/5
PG1 B/4
Q209
146817
PG1 A/5
PG1 B/5
PG1 B/6
PG1 A/5
U103
260347-001
Q208
147561-3
PG1 C/4
PG1 D/2
Q207
146819
PG1 B/5
PG1 D/6
PG1 B/7
+5V
VRAW (+33V)
8.3
147239
D203
3
2
D202
148582
1
U104
148584
PG1 B/5
3.5
V_RAW (+33V)
U302
178352-10
U301
193846-001
3
_OSC
1
12
_OUT
2
_OUT
3
4
_GND
_GND
5
_GND
6
_GND
7
34
_VCC
8
_VCC
9
22
_BOOT
10
SYNC_
COMP_
SS_
V5. 1_
GND_
GND_
GND_
GND_
VFB_
INH_
4
20
12.6
19
5
18
17
16
15
14
3.3
13
2.1
12
11
PG2 D/8
D301
193847-001
+12V
1
2
3
+10V
+5V
2.8
2.8
2.8
2.8
3
2
U303
194024
2.8
1
D302
147249
D303
147249
2.4
2.6
5
7
7
6
U303
194024
2.4
10
9
8
U303
194024
0.6
PG2 C/8
+5V
12
4
4
2.8
14
11
11
13
U303
194024
C201-NV C202-NV
C204-NV
Q203-N
V
R160-NV
R161
R162-NV
R
1
6
3
R202-NV
R203-NV
Y
201-NV
C205-NV
C207-NV
C208-NV
Q204-NV
C216C217
C219
J105
L203
L20
5
C203-NV
C213
C319
C320
C32
1
C322
C324
C325
C326
D203
D302
L302
L3
03
R201-NV
R208-NV
R306
R3
07
R30
8
R309
R311R312
R313
R320
U303
C21
4
C221-NV
C222
C223C224
F
B
1
J104
L201-
N
V
L202-NV
Q
205-N
V
R206-NV
R207-NV
C308
C302
C303
R301
Q201-NV
Q206-N
V
Q
210-NV
1
C145
C323
D204-NV
R14
5
R
Q103
B
R
C118
268895-001
C121
C122
C127
TEC
FCT
T/U
ICT
T/A
0
C211-NV
Q202-NV
R161
C209-NV
R204-NV
R20
5-NV
RR201
C216C217
C328-NV
C319
C320
C32
1
C322
C324
C325
C326
L302
L3
03
R306
R30
8
R309
R311R312
R
314
R
317
R31
8
R320
C206-NV
C210-NV
C21
4
C220-NV
C221-NV
C222
C223C224
F
B
1
J101
J104
L202-NV
L204-NV
R207-NV
R214-NV
C104-NV
C149
D20
2
D303
R158-N
V
R164
R171-NV
R209
R210
R
2
1
1
R212
R
213
R216
R
218
R310
R315
R316
R319
U104
C103
C14
6
C151
C
212
FM-TNR101
Q207
Q20 8
R142
R14
6
R148
R
21
5
J102
D103-NV
R103
R152-NV
R154-NV
R155-N
V
R156-NV
R157-NV
R32
1
T
1
0
2
C102
C105
C106
C107
C108
C112
C114
C115
C1
16
C123
C124
C125
C
126
C130
C131
CF101
CF102
Q102
R
10
1
R102
R10
4
R10
5
R
106
R
1
07
R108
R
1
09
R110
R111
R112
R113 R114
R
122
R12
3
R12
8
R153-N V
T
1
0
3
U1
0
1
T
101
J
1
03
R
T1
C109-NV
C110-NV
C111
C113
C117
C119
C120
C128
C129
C133
C148
Q101
Q104-NV
Q209
R115
R11
6
R
1
1
7
R118
R
1
1
9
R120
R121
R
124
R12
5
R12
6
R127
R
129
R131-NV
R137
R13
8
R139
R
1
4
0
R150
R151
R
1
59
R165
T104
C132
L101
T105
C3
0
1
C312
C313
L304
U302
C134-NV
C135-NV
C136-NV
C137-NV
C140-NV
C14
1
C142
C143
C144
C152
R132-NV
R133-NV
R13
4
R1
3
5
R136
R1
41
R149
R16
9
R2
17
R219-NV
U102-NV
U1
03
Y102
C138-NV C139-NV
R130
Y
101-
N
V
C3
1
0
D3
0
1
L3
0
1
C304
C305
C3
0
6
C307
C309-NV
C314
C315
C316
C317
C327
R302
R303-NV
R304
R305
R32
2
U301
C308
C302
C303
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