NAD T748 Service Manual page 52

SCHEMATIC DIAGRAM ( INPUT/ VOL PART)
R3001 ANALOG1_L
470
L
D3780 1SS355
ANALOG 1 D3781 1SS355 HD RADIO AUDIO PART
R3780 4.7
C3780
R 0.1 *Not Use*
R3002 ANALOG1_R
470
ANALOG2_L C1331
R3005
L 470 OPEN
D3701 1SS355 (HD Radio)
D3702 1SS355 R1341
OPEN
C1339
ANALOG2 R3701 (HD Radio)(B)
4.7
C3701 0.1 OPEN C1347
R (HD Radio)
R3006 ANALOG2_R
HDRADIO_L OPEN
JK301 +5VA R1345 R1346
470
HDRADIO_M OPEN
ANALOG3_L OPEN
R3011 (HD Radio)(B)
(HD Radio)(B)
HDRADIO_R C1348
L 470
D3771 1SS355
OPEN
D3772 1SS355
(HD Radio)(B)
ANALOG3
R3771
4.7
C1340
R1340
C3771 0.1
R
OPEN OPEN
R3012 ANALOG3_R
(HD Radio) (HD Radio)(B)
C1332
470
R3033 RECOUT1_L
OPEN
(HD Radio)
470
L
D3703 1SS355
D3704 1SS355
REC OUT1
R3703 4.7
C3703
0.1
R
R3034 RECOUT1_R
JK302 470
R3015 ANALOG4_L
OPEN
L D3709 OPEN
D3710 OPEN
REC_MUTE *Not Use*
ANALOG4
R3709 OPEN
R3171
C3709
OPEN
R RECOUT2_L OPEN
R3016 ANALOG4_R
OPEN
1 2 3
ANALOG5_L
R3021
OPEN
L
D3711 OPEN
D3712 OPEN
ANALOG5 6 5 4
R3711
OPEN RECOUT2_R
C3711 OPEN
R
R3022 ANALOG5_R OPEN
OPEN R3172
JK303
R3175
ANALOG6_L
R3025
3.9K
OPEN RECOUT1_L
L
D3705 OPEN
D3706 OPEN
ANALOG6 1 2 3
R3705
OPEN
C3705 OPEN
R
R3026 ANALOG6_R
6 5 4
OPEN
RECOUT2_L
R3037 RECOUT1_R
OPEN
L D3707 OPEN
R3176
D3708 OPEN
REC OUT2 3.9K
ANALOG6_L
R3706 OPEN
C3706 ANALOG6_R
OPEN
R
ANALOG5_L
R3038 RECOUT2_R
ANALOG5_R
OPEN
JK304
ANALOG4_L
*N ot U s e*
ANALOG4_R
ANALOG3_L
ANALOG3_R
ANALOG2_L
ANALOG2_R
ANALOG1_L
ANALOG1_R
TUNER_L
TUNER_R
FROM MCU PAGE
IPOD_L
IPOD_R
+12V
D3181 1SS355
Q3181
KRC107S
FUNC_MUTE
(Active "L")
Q3184
OPEN
MULTI_MUTE
(Active "L")
Q3187
KRC107S
SB_MUTE
(Active "L")
Q3190
KRC107S
SW_MUTE
(Active "L")
FUNC_MUTE
ZONE2_MUTE
SB_MUTE
SW_MUTE
MUTE_P
REC_MUTE
Q3195
KRC107S
REC_MUTE
(Active "L")
2-48
HVD1SR159-200
+7V
D3101
IC307
+12V
KIA7808
C1333 C1335 L3099 HVDRB160L60TE25
R1331
D3097 D3095
OPEN 1 IN OUT 3
OPEN OPEN
(HD Radio)(B) (HD Radio)(B)
(HD Radio) CLZ9Z014Z HVD1SR159-200
COMMON
R1333 2
OPEN
(HD Radio)(B)
4 3 2 1
IC132
(HD Radio)(B)
OPEN
5 6 7 8
R1334
1
OPEN -12V
(HD Radio)(B) GND
L3098 HVD1SR159-200
D3096 D3094
+5VA
2 IN OUT 3
C1334 C1336
R1332 HVDRB160L60TE25
CLZ9Z014Z
OPEN
OPEN OPEN
(HD Radio)(B)
(HD Radio)(B) (HD Radio) IC308
KIA7908
D3100
HVD1SR159-200
C3177
R3177
OPEN OPEN
REC MUTE2
R3178 C3178
OPEN OPEN
R3053 R3054
0 0
C3179
R3179 FRONT_L
FROM MCU PAGE
FRONT_R
560 10/16V
REC MUTE1
XM/DAB L
N.C
XM/DAB_L
FROM XM/DAB
XM/DAB R SBLC
XM/DAB_R
BSL OUT
C3180
R3180 N.C
R3051 100K AGND
N.C
560 10/16V
R3052 100K BSR OUT
N.C
SBRC
N.C
AGND
ANALOG6 L
ANALOG6 R
SL OUT
ANALOG5 L
AGND
ANALOG5 R
SR OUT
ANALOG4 L
SRC
ANALOG4 R IC301
ANALOG3 L
R2A15218FP SWC
ANALOG3 R
SW OUT
ANALOG2 L
(8CH E.VOLUME
AGND
ANALOG2 R
C OUT
11 INPUT SELECTOR
ANALOG1 L
ANALOG1 R
TONE CONTROL)
AGND
TUNER L
TUNER R
FL OUT
IPOD L
AGND
IPOD R
FR OUT
N.C
AGND
AD IN R
BASSL1
MUTE High AD IN L
FUNC_MUTE BASSL2
N.C
Q3183
TREL
KRA107S
AVEE
MUTE AVCC
Q3182
KRC107S
-12V
R3183
1M
C3079
-7V
100P
MULTI_MUTE
C3080
Q3186 MUTE High
OPEN
100P
C3081
100P
Q3185
OPEN
R3186 *N ot U s e*
OPEN
MUTE High
SB_MUTE
Q3189
KRA107S
Q3188
KRC107S
R3089
1M FROM MCU
MUTE High
SUB_MUTE
Q3192
KRA107S
Q3191
KRC107S
R3192
1M
TO CODEC
MUTE High
REC_MUTE
Q3194
KRA107S
1M
R3193
KRC107S
Q3193
R3521
-12V R3211
0
C3161 C3167
0 R3165 R3169
OPEN 0ohm 10/16V 560
C3165
OPEN
4 3 2 1
6dB
OPEN
IC316
5 6 7 8
C3166
OPEN
C3162 R3166 C3168 R3170
OPEN R3212 0ohm 10/16V 560
R3522
0
0
R3523
R3213 +12V
0
C3141 0 C3147
R3145 R3149
OPEN 0ohm 10/16V 560
C3145
OPEN
4 3 2 1
6dB
OPEN
IC314
5 6 7 8
C3146
OPEN
C3142 C3148
R3146 R3150
OPEN R3214 0ohm 10/16V 560
R3524
0
0
R3525 R3215
OPEN OPEN
C3121 R3125 C3127 R3129
10/16V 10K 10/16V 560
20dB
C3125
1000P
4 3 2 1
AZ4580M
IC312
5 6 7 8
C3126
6dB
OPEN
R3527
C3122 R3126 OPEN C3128 R3130
OPEN 560
OPEN R3216 10/16V
R3526
0 R3528
0 0
R3529
R3217
0
N.C
C3059 C3401 C3107
0 R3105 R3109
100/16V BSL_OUT OPEN 0ohm 10/16V 560
BSR_OUT C3105
C3060
OPEN
100/16V
4 3 2 1
C3061
SLC
SL_OUT
100/16V
6dB
OPEN
IC310
SR_OUT
C3062 5 6 7 8
100/16V
C3106
N.C C3063
OPEN
100/16V SW_OUT
C3102 R3218 R3106 C3108 R3110
OPEN 0 0ohm 10/16V 560
CT_OUT
R3530
C3064
CC 0
100/16V
C3065
FLC
FL_OUT
100/16V
FR_OUT
C3066
FRC
100/16V
N.C C3076
R3074
C3075
0.15uF 4.7K
C3074
0.047u
0.022u
N.C
+7V
+12V
CLIPPING PART
-12V
3 2 1
C3426
R3425
3.6K 0.01
4 5 6
Q3427
Q3424
KTC3875S
R3174 KTA1504S
SB_MUTE
3.9K
C3418
0.01
R3415 D3417 R3416
2.2K 1SS355 2.2K
D3411 D3412
1SS355 1SS355
FUNC_MUTE D3413 D3414
1SS355 1SS355
D3407 D3408
1SS355 1SS355
D3409 D3410
3 2 1
1SS355 1SS355
D3405 D3406
1SS355 1SS355
4 5 6
D3401 D3402
1SS355 1SS355
D3403 D3404
R3154
1SS355 1SS355
FUNC_MUTE
3.9K
FUNC_MUTE
1SS355 D3133
SUB_MUTE
D3136
1SS355
R3137
OPEN
Q3442
560
3 2 1
R3136
ACTIVE "L"
3.9K
Not Use
Q3136
4 5 6
KTC2875B
R3134
FUNC_MUTE
3.9K
FUNC_MUTE
3 2 1
4 5 6
R3114
FUNC_MUTE
3.9K
2-49
CLIPPING_ON
OVER_CURRENT_CHK
PREOUT_BSL
PREOUT_BSR
PREOUT_SL
PREOUT_SR
PREOUT_SW
PREOUT_CNT
PREOUT_FL
PREOUT_FR