
HCD-GTR88
HCD-GTR88
29
29
6-12.
SCHEMA
TIC DIAGRAM - POWER
AMP
Board -
• See page 43 for W
aveforms. • See page 44 for IC Block Diagrams. • See page 48 for IC Pin Function Description.
D1300
123456789
10
11
12
13
14
15
16
17
18
19
20
21
22
IC1300
+VH
+VL
+REF
-REF
-VL
-VH
SUB-GND
+OUTPUT1
-OUTPUT1
-OUTPUT2
+OUTPUT2
-PRE
+PRE
R-IN
R-NF
STBY
L-NF
L-IN
TD
GND
LIM1
LIM2
100V
3300
C1301
D1301
D25XB60
D25XB60
100V
3300
C1300
100V
C1304
0.1
100V
0.1
C1305
100V
0.1
C1306
100V
0.1
C1307
100 1/2W
R1300
100 1/2W
R1301
0.1
R1347
1k
R1304
1k
R1305
100k
R1306
100k
R1307
0.1
R1346
MA2J1110GLS0
D1306
MC2836
D1307
470p
C1310
470p
C1311
50V
4.7
C1312
50V
4.7
C1313
56k
R1310
56k
R1311
1k
R1312
1k
R1313
68k
R1315
RY1300
12
34
56
1k
R1345
ISA1235AC1TP-1EF
PROTECTOR
Q1306
Q1306
Q1304
2SC3052EF-T1-LEE
PROTECTOR
100k
R1317
47k
R1318
22k
R1319
C1318
0.1
C1317
0.1
0.1
C1319
0.1
C1320
1
8
3
4
5
6
7
NO1301
8P
SW PWR GND
SW DC-DETECT
SW L-GND
-VL
+VL
SW R-GND
SW-OVERLOAD
1
R1324
220k
R1325
220k
R1326
220k
R1327
220k
R1328
56k
R1331
56k
R1332
10V
47
C1322
10V
47
C1323
100k
R1334
100k
R1335
4.7k
R1337
RT1P441C-TP-1 STK STANDBY
STK STANDBY
Q1309
JW1301
JW1305
JW1302
JW1303
MA2J1110GLS0
D1310
JW1304
1
3
4
5
6
7
8
9
10
11
12
13
14
NO1300
13P
VH
VH
VL
PWR GND
PWR GND
VL
VH
VH
AC3
AC3
VG
VF+
VF-
33k
R1344
CL1300
CL1301
CL1302
CL1303
CL1304
CL1305
CL1306
CL1307
CL1308
CL1309
CL1310
CL1314
CL1317
CL1319
CL1320
CL1321
CL1322
CL1323
CL1324
CL1325
CL1326
CL1327
CL1328
CL1329
CL1330
CL1331
CL1332
CL1333
CL1334
CL1335
CL1336
CL1337
CL1338
CL1339
CL1340
CL1341
+
-
+
-
TB1301
1
2
3
4
+
-
+
-
TB1300
1
2
3
4
TH1301
56k
R1314
CL1343
CL1344
CL1345
CL1346
CL1347
CL1348
CL1349
CL1350
4p
C1325
4p
C1324
UDZW-TE17-11B
D1305
UDZW-TE17-11B
D1304
39k
R1339
DC DETECT
2SC3052EF-T1-LEF
THERMAL DETECT
Q1305, Q1307
Q1305
Q1307
2SC3052EF-T1-LEF
Q1308
2SC3052EF-T1-LEF
Q1303, Q1302
Q1302
Q1303
2SC3052EF-T1-LEF
OVERLOAD DETECT
Q1300, Q1301
Q1301
Q1300
1200p
C1314
1200p
C1315
100V
10
C1308
100V
10
C1309
10V
100
C1321
50V
2.2
C1316
1
2
3
4
5
6
7
8
9
10
10P
CN1300
Fan+12V
VF-
VF+
VG
AC3
AC3
AC3
AC3
AC3
AC3
CL1351
CL1352
CL1353
1
2
3
3P
CN1302
FAN+12V
GND
3.3k
R1338
CL1354
CL1355
CL1356
CL1357
CL1358
CL1359
CL1360
CL1361
CL1362
CL1363
CL1364
CL1365
CL1366
CL1367
CL1368
CL1369
CL1370
25V
47
C1327
CL1371
CL1372
CL1373
CL1374
CL1375
CL1376
CL1377
CL1378
CL1379
1
2
3
4
5
6
7
8
9
10
11
11P
CN1303
M+9V/UNREGULATOR
MAIN GND
FL-IN
AGND
FR-IN
PROTECT
STK-MUTE
FRONT RELAY
HP-L
HP-GND
HP-R
47k
R1309
47k
R1308
*R1329, *R1330
680: EXCEPT MX
820: MX
*R1329
*R1330
470p
C1328
470p
C1329
470p
C1330
470p
C1331
470p
C1332
470p
C1333
470p
C1334
30PRA20FC
D1302
30PRA20FC
D1303
1W
3.3k
R1302
1W
3.3k
R1303
R1316
10
10
R1320
18k
R1333
63V
3300
C1302
63V
3300
C1303
STK412-750-E
ET1301
ET1302
E
(CHASSIS)
E
(CHASSIS)
POWER AMP
BOARD
L
R
SATELLITE
SPEAKER
L
R
FRONT
SPEAKER
MAIN BOARD (3/3) CN200
(Page 33)
C
TRANS BOARD CN1250 (Page 38)
MAIN BOARD (3/3) CN100
(Page 33)
H
D
SUBWOOFER
BOARD CN803 (Page 40)
I
IC1300
POWER AMP
0
0
0
-0.2
-0.2
3.2
-0.2
-0.2
75.5
-75.5
0
0
0
0
-77.5
-48.2
-36.6
36.6
48
77.5
0
0
8.5
8.5
0
0
8.9
0
9
0
0.7
8.8
0
0
0
0
0
3.5
0
8.7
9
8.8
DC FAN
M101
1
2
3
4
5
6
7
8
9
10
11
14
15
12
13
A
B
C
D
E
F
G
H
I
J