NAD T748 Service Manual page 54

SCHEMATIC DIAGRAM ( AMP PART )
FL_FB1
+B
1.MUTE_P MUTE_P
FL+SIG
2. N.C
3.HEAT (N.C)
SIGNAL_CHK
4. N.C
5. N.C
6.CLIPPING_ON CLIPPING_ON
7.P_GND P_GND
8.P_GND
FL_FB1
1.FL_FB1
+B
2.+B
FL_FB2
+B
3.+B
FL+SIG
4.FL+SIG
FL_FB2
5.FL_FB2 FL-SIG
FL-SIG
6.FL-SIG
-B
7.-B
-B
8.-B
-B
CNT_FB1
+B
CNT_FB1
1.CNT_FB1
+B
2.+B
+B
3.+B
CNT+SIG
4.CNT+SIG
CNT_FB2 CNT+SIG
5.CNT_FB2
CNT-SIG
6.CNT-SIG
-B
7.-B
-B
8.-B
FR_FB1
1.FR_FB1
+B
2.+B
+B
3.+B
FR+SIG
4.FR+SIG
FR_FB2
5.FR_FB2 CNT_FB2
FR-SIG
6.FR-SIG
-B
7.-B
-B CNT-SIG
8.-B
-B
FR_FB1
+B
SL_FB1
1.SL_FB1
+B
3.+B
+B
3.+B
SL+SIG
4.SL+SIG
FR+SIG
SL_FB2
5.SL_FB2
SL-SIG
6.SL-SIG
-B
7.-B
-B
8.-B
BSL_FB1
1.BSL_FB1
+B
2.+B
+B
3.+B
BSL+SIG
4.BSL+SIG
BSL_FB2
FR_FB2
5.BSL_FB2
BSL-SIG
6.BSL-SIG
-B
7.-B FR-SIG
-B
8.-B
-B
SR_FB1
1.SR_FB1
+B
2.+B SL_FB1
+B
+B
3.+B
SR+SIG
4.SR+SIG
SR_FB2
5.SR_FB2
SR-SIG
6.SR-SIG
-B
7.-B SL+SIG
-B
8.-B
BSR_FB1
1.BSR_FB1
+B
2.+B
+B
3.+B
BSR+SIG
4.BSR+SIG
BSR_FB2
5.BSR_FB2
BSR-SIG
6.BSR-SIG
-B
7.-B
-B SL_FB2
8.-B
SL-SIG
-B
2-52
R8003 R8005
B+
75 18(1/4W)
Q8001
Q8004
A1360Y
2SD2390
R8017
+1.2V
Q8003 Q8006
OVER
KTC3200GR 22K
D1691Y R8011 3.3(1/4W)
R8014
22K
FL_CH
R8007
10
R8010
P_GND
VR800 360
220
R8012 3.3(1/4W)
R8018 47(1/4W)
-1.2V Q8005
2SB1560
Q8002 SL
R8019 47(1/4W)
C3423Y
R8004 R8006 L8000 0.5uH
B-
75 18(1/4W)
R8103 R8105
B+
75 18(1/4W)
Q8101
A1360Y
Q8104
2SD2390
R8117
+1.2V Q8103
Q8106 OVER
D1691Y R8111 3.3(1/4W) KTC3200GR 22K
R8114 22K
CNT_CH
R8107
10
R8110
P_GND
VR810 360
220 R8112
3.3(1/4W)
R8118 47(1/4W)
-1.2V Q8105
2SB1560
CNT
Q8102
C3423Y R8119 47(1/4W)
R8104 R8106 L8100 0.5uH
B-
75 18(1/4W)
R8203 R8205
B+
75 18(1/4W)
Q8201
Q8204
A1360Y
2SD2390
+1.2V R8217
Q8203
Q8206
OVER
KTC3200GR 22K
D1691Y R8211 3.3(1/4W)
R8214
22K
FR_CH
R8207
10
R8210
P_GND
VR820 360
220
R8212 3.3(1/4W)
R8218 47(1/4W)
-1.2V Q8205
2SB1560
Q8202 SR
R8219 47(1/4W)
C3423Y
R8204 R8206 L8200 0.5uH
B-
75 18(1/4W)
R8303 R8305
B+
75 18(1/4W)
Q8301
A1360Y Q8304
2SD2390
R8317
+1.2V Q8303
Q8306 OVER
KTC3200GR 22K
D1691Y R8311 3.3(1/4W)
R8314 22K
SL_CH
R8307
10
R8310
P_GND
VR830 360
220
R8312 3.3(1/4W)
-1.2V Q8305 R8318 47(1/4W)
2SB1560
FL
Q8302
R8319 47(1/4W)
C3423Y
R8304 R8306 L8300 0.5uH
B-
75 18(1/4W)
SR_FB1
+B
R8403 R8405
75 18(1/4W)
SR+SIG Q8401
A1360Y Q8404
2SD2390
+1.2V Q8403
D1691Y R8411 3.3(1/4W)
R8414
22K
R8407
10
R8410
P_GND
VR840 360
220
R8412 3.3(1/4W)
SR_FB2
R8418 47(1/4W)
-1.2V Q8405
2SB1560
Q8402
SR-SIG
R8419 47(1/4W)
C3423Y
R8404 R8406 L8400 0.5uH
-B 75 18(1/4W)
BSL_FB1
+B
R8503 R8505
75 18(1/4W)
BSL+SIG Q8501
A1360Y
Q8504
2SD2390
+1.2V Q8503
D1691Y R8511 3.3(1/4W)
R8514 22K
R8507
10
R8510
P_GND
VR850 360
220 R8512
BSL_FB2 3.3(1/4W)
R8518 47(1/4W)
-1.2V Q8505
2SB1560
BSL-SIG Q8502
C3423Y R8519 47(1/4W)
R8504 R8506 L8500 0.5uH
-B 75 18(1/4W)
BSR_FB1
+B
R8603 R8605
75 18(1/4W)
BSR+SIG Q8601
A1360Y
Q8604
+1.2V 2SD2390
Q8603
D1691Y R8611 3.3(1/4W)
R8614
22K
R8607
10
R8610
P_GND
VR860 360
220
R8612 3.3(1/4W)
BSR_FB2
R8618 47(1/4W)
-1.2V Q8605
2SB1560
BSR-SIG Q8602
R8619 47(1/4W)
C3423Y
R8604 R8606 L8600 0.5uH
-B 75 18(1/4W)
2-53
B+
R8417
Q8406
OVER
KTC3200GR 22K
SR_CH
FR
B-
B+
R8517
Q8506 OVER
KTC3200GR 22K
BSL_CH
BSL
B-
B+
R8617
Q8606
OVER
KTC3200GR 22K
BSR_CH
BSR
B-