Panasonic SAHT280 - RECEIVER, Service Manual

Page: 67 / 96

To SURROUND
CIRCUIT(W1205)
on SCHEMATIC
DIAGRAM-5
A
L ch
R ch
CD
JK402
L ch
R ch
L ch
R ch
L ch
R ch
L ch
R ch
L ch
R ch
JK402
JK402
JK402
JK402
JK402
R401
1K
R402
1K
A
R405
1K
R406
1K
R407
1K
R408
1K
R409
1K
R410
1K
R414
1K
JK351
JK351
JK351
2
1
3
4
5
6
7
8
9
R411
1K
R412
1K
R413
1K
C329
47P
R303
75
R301
75
C330
47P
R302
75
C419 330P
R428
1K
R429 100K
C420
50V3.3
R362
75
C373
16V47
R373
10K
C374
16V47
R374
10K
C375
16V47
R375
10K
R359
75
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
R
4 3 2 1
8 7 6 5
4 3 2 1
8 7 6 5
IC1208
M62490FPE1
SOUND CONTROLLER
(VOLUME CONT.)
A
B
C
D
E
F
G
H
I
12
10
J
IC1202
NJM4580DD
VREF
IC1203
NJM4580DD
BUFFER AMP
C
F
GND
SW FMIX
L DSP
R DSP
R DOUT
L DOUT
CK VR
DT VR
SW DSP
SW LPF IN
B
CN1205
R1221
100K
R1220
1K
R1256
47K
C1242
50V4.7
C1275
0.047
R1222
2.2K
C1218 16V10 C1219
0.01
R1226
3.3K
R1224
100K
R1286
47K
C1287 25V10
D1281
MTZJ10BTA
R1282
2.2K
C1288
0.01
C1290
0.01
C1249
0.47
C1285 16V10
R1281
47K
IN/OUT TERMINAL CIRCUIT
SCHEMATIC DIAGRAM-1
IC1201
NJM2060D
BUFFER AMP
AUDIO
REC(OUT)
PLAY(IN)
TAPE
TV IN
OUT
IN
VCR
VIDEO
VCR
DVD IN
TV MONITOR
OUT
TV IN
AUDIO
SUB WOOFER
OUT
R1223
6.8K
C1236
0.1
R1225
10K
C1216
16V33
A
B
C1295
16V22
C1221
0.22
Q1201
2SD2137PQTA
REGULATOR
C1294
0.01
4 5 6 7 1 2 3
11 10 9 8 14 13 12
Vcc
Vss
C1274 16V33 R1294
47K
R1210
3.3K
R1214
3.3K
C1298
50V2.2
R1218
47K
C1210
390P
C1206
470P
R1230
2.7K
R1208
3.9K
C1282
50V4.7
R1219
2.2K
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 20 19
Vcc
Rch
IN
Rch
OUT
V
DD
NC
CLK1
DT1 GND Lch
OUT
Lch
IN
H
D
E
G
J
K
I
C1283
50V4.7
C1284
50V4.7
C1273
16V33
R1293
47K
R1209
3.3K
C1209
390P
R1213
3.3K
C1297
50V2.2
R1217
47K
C1205
470P
R1207
3.9K
R1229
2.7K
C1222 3300P
C1248 3300P
R1203
1K
R1201
33K
C1203
16V33
C1201 3300P
R1204
1K
R1202
33K
C1204
16V33
C1202 3300P
C1293
0.039
C1292
100P
R1284
1K
C1291
100P
R1285
1K
11
K
V
DD
+B(9)
C1286 16V10 C1289
0.01
C1281
50V4.7
C1212
0.01
C1214 16V10
R1215
5.6K
R1216
5.6K
C1213 16V10
C1211
0.01
C1217
0.01
IN
OUT
NOTE: The number which noted at the connectors on the schematic diagram as
"SCHEMATIC DIAGRAM-1" or "SCHEMATIC DIAGRAM-2"
indicates the schematic diagram serial number located on the left corner in the schematic diagram.
:NEGATIVE VOLTAGE LINE
:POSITIVE VOLTAGE LINE :FM/ AM SIGNAL LINE
:SUB WOOFER SIGNAL LINE
9.2V
4.9V
14.4V
9.2V
4.9V
-16.2V
-16.2V
8.6V 8.6V
9.2V 4.6V 4.6V 4.6V
9.2V 14.4V
9.8V
14.4V 0V 0V
0V 0V -16.2V
14.4V 0V 0V 0V 0V
-16.2V 0V 0V 0V 0V
0V 4.9V 4.6V 4.5V 4.6V 4.6V 9.2V
4.6V 4.6V 4.6V 4.6V 4.6V 0V 0V