NAD T 187 Service Manual page 49

FRONT INPUT BOARD
M9302
J-TR-ST03007
2
MIC/MP IN
3
1
TO CHGND
J9003
J9001A
TO J9001B
M9304
3 2
FRONT C Y
5 4
CG YG
S-VIDEO INPUT
G
J9001B 1 R9303
75
TO J9001A
DGND_V
M9305
FRONT 1
2
R9304
COMPOSITE INPUT
75
J9002A
TO J9002B
DGND_V
M9306
R9305 0
FRONT 3
D9307
2
5.1V
R(MONO) INPUT
1
AGND
R9340
M9307
4.7
FRONT 3
2
L INPUT
1
J9002B
TO J9002A
AGND
C9320
22u 16V
0
R9329
C9318
R9334 R9330
R9311
100p
N.I. 33k
C9321
22u 16V
R9328 0
C9319 R9335
R9331
100p N.I. 33k
AGND
C9303
2.2uF 50V
C9304
D9301 D9303
2.2uF
5.1V 5.1V
50V
R9302
D9302 D9304
75
5.1V 5.1V
C9325 1u
R9336 R9337
0 0
C9305
2.2uF 50V D9305
5.1V
D9306
5.1V
R9338
C9328
0
0.1uF
C9313
CHGND_VIDEO
J9304
220p
C9307
R9307
22u 16V
33k
C9306
R9306
100p
N.I.
D9308
5.1V
AGND AGND
AGND
C9309
R9308
0
22u 16V
R9309 C9308 R9310
N.I. 100p 33k
AGND AGND
AGND
D9309
5.1V
D9310
5.1V
R9339 C9329
0.1uF
4.7
J9305
CHGND_AUDIO
C9326
0.01u
DGND_V
+5V_V6 +5V_V6
R9312
N.I.
E
Q9301
B
DTA114EKA
47K
5V
C
R9333
1k
3.1V
C9327
R9313
22uF
18k
16V R9314
2.2k
AGND AGND
2V
U9301-A
NJM5532M
R9326
C9314
3
+
1
2
10k
-
R9332
2.2uF 50V
33k
43k
R9317
C
Q9305 2SC4695
C9322 33p
B
2SC4695
R9327
4.7k
E
-12V_A
R9316
AGND
2.2k
Q9302 AGND
R9320
DTA114EKA
R9319
4.7k
R9318
10k
300
+26dB GAIN
AGND AGND
+12V_A
C9323
0.1uF
U9301-C 8
NJM5532M
4
AGND
J9301
C9324
0.1uF
AGND
-12V_A
49
-12V_A
MIC_BIAS:
H: MP3
L: MIC
R9321 R9322
C9315
470 470
22u 16V
Q9303 Q9304
2SC4695
R9324 R9325
100k 100k
C9316 C9317
R9323
0.1uF 0.1uF
4.7k
AGND
+12V_A +5V_V6
J2005B
To MCU J2005A
1
+5V_V6
2
3
MIC_BIAS 4
+12V_A 5
-12V_A 6
J2006B
To MCU J2006A
V6_Y
1
DGND_V
2
V6_C
3
DGND_V 4
V6_V 5
DGND_V 6
J9004B
TO CONN#1 J9004A/05A
MP3_L 1
AGND 2
MP3_R 3
AGND 4
MIC
5
J9006B
TO CONN#1 J9006A
V6_L 1
AGND 2
V6_R 3
AGND
DGND_V