NAD T 748, Руководство по обслуживанию

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MULTI_MUTE
SW_MUTE
SB_MUTE
V
2
1
-
V
2
1
-
V
2
1
-
V
2
1
-
MUTE High
MUTE High
MUTE High
MUTE High
(Active "L")
(Active "L")
(Active "L")
(Active "L")
TO MCU P
A
RT
L
L
L
R
R
R
REC OUT1
ANALOG2
L
R
ANALOG4
ANALOG3
R
L
ANALOG 1
DA
C.
FL
DA
C.
FR
DA
C.
C
DA
C.
S
W
DA
C.
S
L
DA
C.
S
R
DA
C.
B
S
L
DA
C.
B
S
R
IPOD L
IPOD R
N.C
AGND
AD IN R
AD IN L
N.C
AVEE
MUTE
N.C
N.C
N.C
H
D
R
AD
IO R
H
D
R
AD
IO L
RE
C
2 R
RE
C
2 L
MI
C R
MI
C L N.
C
N.
C
N.
C
N.
C
N.
C
BAS
S
R
1
BAS
S
R
2
TR
E
R
N.
C
SB
L I
N
2
SB
R I
N
2
C I
N
2
SW
I
N2
SL I
N
2
S
R
IN
2
F
L
IN
2
F
R
IN
2
SB
RC
IN
SB
LC
IN
SU
B
L
SU
B
R
DG
N
D
DA
T
A
CL
O
CK
AVCC
N.C
TREL
BASSL2
BASSL1
N.C
FRC
FR OUT
AGND
FL OUT
FLC
AGND
CC
C OUT
AGND
SW OUT
SWC
N.C
SRC
SR OUT
AGND
SL OUT
SLC
AGND
SBRC
BSR OUT
AGND
BSL OUT
SBLC
N.C
F
R
ON
T R
IN
FR
O
N
T
L
I
N
BSL_OUT
BSR_OUT
SL_OUT
SR_OUT
SW_OUT
CT_OUT
FL_OUT
FR_OUT
ANALOG6
R
L
ANALOG5
R
L
(8CH E.VOLUME
11 INPUT SELECTOR
TONE CONTROL)
REC OUT2
R
L
ANALOG6 L
ANALOG6 R
ANALOG5 L
ANALOG5 R
ANALOG4 L
ANALOG4 R
ANALOG2 L
ANALOG2 R
ANALOG1 R
ANALOG1 L
XM/DAB L
XM/DAB R
TUNER R
TUNER L
ANALOG3 L
ANALOG3 R
TO CODEC
FROM MCU
FROM MCU
FROM MCU PAGE
6dB
6dB
6dB
6dB
FROM XM/DAB
FROM MCU PAGE
F
R
OM MCU PAGE
CLIPPING PART
Not Use
HD RADIO AUDIO PART
N.C
N.C
ACTIVE "L"
20dB
*Not Use*
ON
LY
FOR
4OHM
REC MUTE2
REC MUTE1
(Active "L")
REC_MUTE
MUTE High
*Not Us e*
*Not Use*
*Not Us e*
FUNC_MUTE
R3113
3.
9K
R3114
3.9K
R3109
560
R3110
560
C3105
OPEN
C
3111
OP
E
N
C
3112
OP
E
N
R3103 OP
E
N
R3104
OP
E
N
C3102
OPEN
C3401
OPEN
R3102
OP
E
N
R3401 OP
E
N
R3107 100K
R3108 100K
C3107
10/16V
C3108
10/16V
R3105
0ohm
R3106
0ohm
C3106
OPEN
8 7 6 5
4 3 2 1
IC310
OPEN
R3136
3.9K
Q3136
KTC2875B
1 2 3
4 5 6
Q
3111
H
V
TK
TC
8
1
2
TB
R3133
3.
9K
R3134
3.9K
R3129
560
R3130
560
C3125
1000P
C
3131
0.
1/16V
C
3132
0.
1/16V
R3123
1.
2K
R3124
OP
E
N
C3122
OPEN
C3121
10/16V
R3122 OP
E
N
R3121
47Koh
m
R3127 100K
R3128 100K
C3127
10/16V
C3128
10/16V
R3125
10K
R3126
OPEN
C3126
OPEN
8 7 6 5
4 3 2 1
IC312
AZ4580M
R3137
560
1 2 3
4 5 6
Q
3121
H
V
TK
TC
8
1
2
TB
R3153
3.
9K
R3154
3.9K
R3149
560
R3150
560
C3145
OPEN
C
3151
OP
E
N
C
3152
OP
E
N
R3143 OP
E
N
R3144 OP
E
N
C3142
OPEN
C3141
OPEN
R3142 OP
E
N
R3141 OP
E
N
R3147
100K
R3148
100K
C3147
10/16V
C3148
10/16V
R3145
0ohm
R3146
0ohm
C3146
OPEN
8 7 6 5
4 3 2 1
IC314
OPEN
1 2 3
4 5 6
Q
3141
H
V
TK
TC
8
1
2
TB
R3173
3.
9K
R3174
3.9K
R3169
560
R3170
560
C3165
OPEN
C
3171
OP
E
N
C
3172
OP
E
N
R3163 OP
E
N
R3164 OP
E
N
C3162
OPEN
C3161
OPEN
R3162
OP
E
N
R3161 OP
E
N
R3167 100K
R3168 100K
C3167
10/16V
C3168
10/16V
R3165
0ohm
R3166
0ohm
C3166
OPEN
8 7 6 5
4 3 2 1
IC316
OPEN
1 2 3
4 5 6
Q
3161
H
V
TK
TC
8
1
2
TB
Q3184
OPEN
Q3185
OPEN
Q3186
OPEN
R3184
OP
E
N
Q3187
KRC107S
Q3188
KRC107S
Q3189
KRA107S
R3187
10K
Q3190
KRC107S
Q3191
KRC107S
Q3192
KRA107S
R3190
10K
Q3181
KRC107S
Q3182
KRC107S
Q3183
KRA107S
R3181
10K
R3183
1M
R3186
OPEN
R3089
1M
R3192
1M
C
3016
OP
E
N
R3018 OP
E
N
R3015
OPEN
C
3015
OP
E
N
R3017 OP
E
N
C
3012
220P
R3012
470
R3014 100K
R3011
470
C
3011
220P
R3013 100K
C
3095
150u
F
/10V
C
3096
150u
F
/10V
99 98 97 96 95 94 93 92 91 90 89 88 87 86 85 84 83 82 81
80
79
78
77
76
75
74
73
72
71
70
69
68
67
66
65
64
63
62
61
60
59
58
57
56
55
54
53
52
51
50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
100
IC301
R2A15218FP
C3060
100/16V
C3061
100/16V
C3062
100/16V
C3063
100/16V
C3064
100/16V
C3065
100/16V
C3066
100/16V
C3059
100/16V
C3711
OPEN
R3711
OPEN
D3712 OPEN
D3711 OPEN
C3709
OPEN
R3709
OPEN
D3710 OPEN
D3709 OPEN
C3705
OPEN
R3705
OPEN
D3706 OPEN
D3705 OPEN
C3703
0.1
R3703
4.7
D3704 1SS355
D3703 1SS355
C3701
0.1
R3701
4.7
D3702 1SS355
D3701 1SS355
C
3002
220P
R3002
470
R3004 100K
R3001
470
C
3001
220P
R3003 100K
R3027 OP
E
N
C
3025
OP
E
N
R3025
OPEN
R3028
OP
E
N
R3026
OPEN
C
3026
OP
E
N
R3016
OPEN
C1347
OPEN
C1348
OPEN
(HD Radio)(B)
C
1349
OP
E
N
(HD
Ra
di
o)
(B
)
C1333
OPEN
(HD Radio)(B)
8 7 6 5
4 3 2 1
IC132
OPEN
(HD Radio)(B)
C1332
OPEN
(HD Radio)
R1345
OPEN
(HD Radio)(B)
R1346
OPEN
(HD Radio)(B)
R1341
OPEN
(HD Radio)(B)
C1339
OPEN
(HD Radio)
R1343
OP
E
N
(HD
Ra
di
o)
(B
)
C
1343
OP
E
N
(HD
Ra
di
o)
(B
)
R1344
OP
E
N
(HD
Ra
di
o)
(B
)
C
1344
OP
E
N
(HD
Ra
di
o)
(B
)
R1340
OPEN
(HD Radio)(B)
C1340
OPEN
(HD Radio)
R1332
OPEN
(HD Radio)(B)
R1334
OPEN
(HD Radio)(B)
C1334
OPEN
(HD Radio)(B)
R1333
OPEN
(HD Radio)(B) R1337
OP
E
N
(H
D
Ra
di
o)
(O
PT
IO
N)
(B
)
C1335
OPEN
(HD Radio)
C1336
OPEN
(HD Radio)
R1338
OP
E
N
(HD
Ra
di
o)
(O
PT
IO
N)
(B
)
R3081
100
R3080
100
R3079
100
C1331
OPEN
(HD Radio)
R1331
OPEN
(HD Radio)(B)
R3023 OP
E
N
C
3021
OP
E
N
R3021
OPEN
R3024 OP
E
N
R3022
OPEN
C
3022
OP
E
N
C
3032
220P R3032 100K
C
3031
220P R3031
100K
R3007 100K C
3005
220P
R3005
470
R3008 100K
R3006
470
C
3006
220P
C
3036
OP
E
N
R3036 OP
E
N
C
3035
OP
E
N
R3035
OP
E
N
R3033
470
R3034
470
R3037
OPEN
R3038
OPEN
GND
IN OUT 2
1
3
IC308
KIA7908
COMMON
IN OUT
1
2
3
IC307
KIA7808
C
3099
100/16V
C
3098
100/16V
L3099
CLZ9Z014Z
L3098
CLZ9Z014Z
D3097
HVD1SR159-200
D3096
HVD1SR159-200
D3095
HVDRB160L60TE25
D3094
HVDRB160L60TE25
C
3093
0.
1
C3426
0.01
C3418
0.01
D3417
1SS355
R3419
2.
2K
R3420
2.
2K
R3421
560K
R3415
2.2K
R3416
2.2K
R3425
3.6K
Q3427
KTA1504S
Q3424
KTC3875S
D3412
1SS355
D3411
1SS355
D3414
1SS355
D3413
1SS355
D3408
1SS355
D3407
1SS355
D3410
1SS355
D3409
1SS355
D3406
1SS355
D3405
1SS355
D3402
1SS355
D3401
1SS355
D3404
1SS355
D3403
1SS355
C
3422
1/50V
C
3423
1/50V
Q3442
OPEN
R3441
OP
E
N
C
3442
OP
E
N
R3442 OP
E
N
R3051 100K
R3052 100K
R3091
100K
R3092
100K
R3093
100K
R3094
100K
R3095
100K
R3096
100K
R3097
100K
R3098
100K
R3131
18K
D3181 1SS355
C
3097
0.
1
R3171
OPEN
R3172
OPEN
1 2 3
4 5 6
Q
3171
H
V
TK
TC
8
1
2
TB
R3175
3.9K
R3176
3.9K
1 2 3
4 5 6
Q
3172
H
V
TK
TC
8
1
2
TB
Q3193
KRC107S
Q3194
KRA107S
R3193
1M
C
3100
0.
1
C
3101
0.
1
C3706
OPEN
R3706
OPEN
D3708 OPEN
D3707 OPEN
D
3099
HVD
RB
160L60T
E
2
5
D
3098
HVD
RB
160L60T
E
2
5
D3101
HVD1SR159-200
D3100
HVD1SR159-200
C3180
10/16V
C3179
10/16V
C3178
OPEN
C3177
OPEN
R3177
OPEN
R3178
OPEN
R3179
560
R3180
560
C3079
100P
C3080
100P
C3081
100P
C3780
0.1
R3780
4.7
D3781 1SS355
D3780 1SS355
R3422
22K
Q3195
KRC107S
R3194
10K
D3133
1SS355
D3136 1SS355
JK301
JK302
JK303
JK304
C3771 0.1
R3771
4.7
D3772 1SS355
D3771 1SS355
R3211
0
R3212
0
R3213
0
R3214
0
R3215
OPEN
R3216
0
R3217
0
R3218
0
R3053
0
R3054
0
R3521
0
R3522
0
R3523
0
R3524
0
R3525
OPEN
R3526
0
R3529
0
R3530
0
R3527
OPEN
R3528
0
C
3073
0.
15u
F
C
3071
0.
022u
C
3072
0.
047u
R3071
4.
7K
C3076
0.15uF
C3074
0.022u
C3075
0.047u
R3074
4.7K
FUNC_MUTE
FUNC_MUTE
FUNC_MUTE
FUNC_MUTE
SW_MUTE
SB_MUTE
ZONE2_MUTE
FUNC_MUTE
FUNC_MUTE
MULTI_MUTE
SB_MUTE
SUB_MUTE
FUNC_MUTE
FUNC_MUTE
PREOUT_FL
PREOUT_FR
PREOUT_CNT
PREOUT_SW
PREOUT_SL
PREOUT_SR
PREOUT_BSL
PREOUT_BSR
SB_MUTE
SUB_MUTE
XM/DAB_R
XM/DAB_L
TUNER_L
TUNER_R
-7
V
+7V
+7V
-7V
+5VA
AD
_
R
IN
AD
_
L
IN
DA
C_FR
DA
C_FL
DA
C_SR
DA
C_SL
DA
C_SW
DA
C_CN
T
DA
C_B
S
R
DA
C_B
S
L
MA
IN
_V
O
L
_MU
T
E
MA
IN
_V
O
L
_CL
K
M
AIN
_
V
OL
_
D
ATA
-12V
-12V
-12V
+12V
+12V
FRONT_L
FRONT_R
HDRADIO_L
HDRADIO_M
HDRADIO_R
ANALOG1_R
ANALOG1_L
ANALOG2_R
ANALOG2_L
ANALOG3_L
ANALOG4_R
ANALOG4_L
ANALOG5_R
ANALOG5_L
ANALOG6_R
ANALOG6_L
RECOUT2_L
RECOUT2_R
MUTE_P
+5VA
IPOD_R
IPOD_L
-12V
+12V
CLIPPING_ON
OVER_CURRENT_CHK
ANALOG3_R
+12V
RECOUT1_R
RECOUT1_L
RECOUT2_R
RECOUT2_L
REC_MUTE
REC_MUTE
REC_MUTE
ANALOG6_R
ANALOG6_L
ANALOG5_L
ANALOG5_R
ANALOG4_R
ANALOG4_L
RECOUT1_R
RECOUT1_L
ANALOG3_R
ANALOG3_L
ANALOG2_R
ANALOG2_L
ANALOG1_R
ANALOG1_L
2-48 2-49
SCHEMATIC DIAGRAM ( INPUT/ VOL PART)