NAD C 326BEE Service Manual page 17

MAIN BOARD (2)
CZ11B CZ11A
8pin 8pin
1 1
CZ11-1 CZ11-1
2 CZ11-2 2 CZ11-2
3 3
VFB-L-CH VFB-L-CH
Q125
4 4
MMBT5087
C148
5 5
CZ11-5 CZ11-5 47U
35V
6 6
CZ11-6 CZ11-6
7 7
CZ11-7 CZ11-7
8 8
CZ11-8 CZ11-8 R192
22K
R191
22K
R190
Q127
MMBT5210
100
C147
R189
47U
22K
35V
J105A J105B
D111
1 1
1N4148 R194
1K
2 2
C144
R188
Q129
10U16V 22K
M109-A MMBT5210
C145
R187
R181
1
L
470 100
0.1U
C210
MAIN-IN
2 R718
R180 N.I.
22K
220K
CZ11-2
R
3
VFB-L-CH
Q123 Q124
2SA1015 2SC1815
MAIN-IN-R
R195
C155
J305A J305B
220U 1K
1 1
35V
2 2
R196
R182 R186
1K8
100 100
D110 R183
33K
18V
D116
10V
R197
2K2/2W
R184
R178
1K1
C146
30K
10U
25V
C214 C222
R185 39P 470P
1K1
OFF
6
5
4
3
2
1
ON
SW101-A SW101-B
R385
1K1
DGND
CZ21-1
Q325
C346
MMBT5087
R384 C348
10U
47U
1K1 25V
35V
D310 R383
R392
18V 33K
22K
R391
22K
R382 R386
100
100
R390
Q327
MMBT5210
100
C347
47U
R389
35V
22K
D311
1N4148 R394
1K
Q323 Q324
2SC1815 2SA1015
R388 Q329
22K MMBT5210
C345
R381 R387
MAIN-IN-R
100
470 0.1U
C410
R380 R818
N.I.
C344 CZ21-2
220K 22K
VFB-R-CH
10U16V
R395
1K
C355
220U
CZ21B CZ21A
8pin 8pin 35V
R396
1 1
CZ21-1 CZ21-1 1K8
2 2
CZ21-2 CZ21-2
3 3
VFB-R-CH VFB-R-CH
4 4 D316
10V
5 5
CZ21-5 CZ21-5
R397
6 6 2K2/2W
CZ21-6 CZ21-6
7 CZ21-7 7
CZ21-7
8 8
CZ21-8 CZ21-8
D139 D141 R206
100/1W FS
3.3V 1W 1N4007
C206 C152
C207
R205 220U
22n
R193
82 0.1u
63V
R703
MF 63V
22
5%
560
C150 D114
R207 R208
IN4148
10U 16V N.I. N.I. R225
820
Q130 D117
N.I.
MMBT5087 Q136
Q126
MMBT5210
MMBT5087
R297
100
D112
1N4148 Q137
MMBT5210
R204 Q138
D113
10 C219 MMBT5087
1N4148
4700p C159 NZT660
100P
Q128 R224
Q131
MMBT5087 R223 75
KSA1220
330
D118 Q139
N.I.
MMBT5087
C151
C149 39P
R203
15P
100K
R222 R221
MF
2K2
330
CZ11-6
R219
2K2
C205
C153 330P
100P
C154 N.I.
R202
R299 L104
100 3.3uH
330
R712
R201 27K
C218 C203
R711 100P 220P
D119
22K
1K
N.I.
R702 R214
N.I.
N.I.
C204
R199 R211
150p
Q135
N.I.
R213 R215
22K
Q132 N.I.
N.I. N.I.
R198 MMBT5551
22K
D137
N.I.
C156 R704 1K
47U
R209 C158 U103
25V D138
R212
N.I. N.I. N.I.
N.I. R200
N.I.
120
D140 D142 R210
3.3V 1W 1N4007 100/1W FS
C208
0.1u
63V
C157
220U
63V
P P CB MOUNTED VERTICAL
R406
D339 D341
3.3V 1W 1N4007 100/1W FS
C406
C407
R405
22n
R393
0.1u
82
R803
63V
MF 22
5%
560
D314
R407 R408
C350 IN4148
N.I. R425
N.I.
10U 16V
C352 820
220U D317
N.I. Q336
63V
Q326
MMBT5210
MMBT5087
R497
100
D312
1N4148 Q337
MMBT5210
R404
Q338
D313 10 Q340
C419 MMBT5087
1N4148
NZT660
4700p C359
100P
Q328 R424
MMBT5087 Q331 R423 75
KSA1220
330
D318 Q339
N.I.
MMBT5087
C351
C349 39P
R403
15P
100K CZ21-6 R422 R421
MF 2K2
330
VI-R
C405
C353 330P
100P
R419 2K2
C354 N.I.
R402 330
L304
R499
100 3.3uH
R812 R811 C418 C403
22K 1K 100P 220P
D319
R401 27K
N.I.
C404
R802 R414
150p
N.I.
N.I.
R399 R411
Q335
N.I.
R413 R415
22K N.I.
Q332 N.I. N.I.
R398 MMBT5551
22K
D337 U303
N.I. N.I.
R804 1K
C356
47U
C358
D338
25V R412
R409 N.I.
R400
N.I. N.I.
N.I.
120
D340 D342
R410
3.3V 1W 1N4007 100/1W FS
C408
0.1u
CZ21-5
63V
C357
220U
63V
PCB MOUNTED VERTICAL
MOUNTED ON HEATSINK
J102B J302B
3 3
2 2
1 1
Q160 Q360
KSC2690 KSC2690
R241 D124 IN4148
C171
R243
56 N.I.
HS
15 R245
C164
D125 8M2
C166
IN4148 200p
N.I.
hs
R242
Q142
22K
KSA1220
HS
Q146 R246
L103 KSC2690
470K
3.3uH
Q147
R231
NZT560
R244
1K
C161 R706 R248 36K D128
R226 10 FS C168
100U
R229 D122
3.3 330
560P
2M4 5V1 16V
Q140 0.5W VR103 C220
J102A
200 TP1
82n
3 2pin
C217
R240
C160 1
2 3 0.1u
100U 0.05
2
1
50V 5W
10/1W FS
V-OUT-L
D123
C200 R239
5V1
C162 R232 R252
1n
0.05
100U 511 36K
C201
5W
16V
1n
R238
22
R251
100
Q141
C169
NZT560
560P
R253
1K8
1%
R233
C163
820
10U
TP2
16V
R234 Q149 2pin
NZT660
1
10 FS
2
Q150
KSA1220
C165
R236
HS
200p
hs
C167
C
22K N.I.
B
D126
IN4148 HS
Q144
D127 E
KSC2690 Q151
NJW0281G
R237
R235 15 IN4148
56
POWER AMP L/CH
C170
C209
1000p
0.1u
+46V 63V
-46V 250V
CZ11-8
L102 N.I.
R260 R259
1 68 1% R258 100
9 0 S C 3 2 6 P R E D V R - 9 0 2 1 0 0 0
D324
R441
C371
HS N.I.
15
IN4148
C364 C366
D325
200p N.I.
IN4148
R443
56
R445
hs R442 8M2
Q342
22K
KSA1220
HS
Q346 R446
KSC2690
L303 470K
3.3uH
R431 Q347
10 FS NZT560
R444
1K
C361
R426 R448 36K
R429 100U
D322 R806
3.3 VR303
2M4 5V1 16V
0.5W 330 200
TP3
C420
J302A 2pin R449 3K6
C368 82n
3
560P
C360 R440 1
3
100U 2 0.05
C417 2
50V
5W
1 10/1W FS
0.1u V-OUT-R
C362
R438
C400 D323
100U
1n 5V1 R432 22 R451 R452
16V
100
511 36K
C401
1n
R439
0.05
5W
Q341
NZT560 C369
560P
R453
1K8
1%
R433 C363
820 10U
TP4
16V
R434 2pin
Q349
NZT660
1
10 FS
2
Q350
KSA1220
HS
C365
Q344 R436
Q351
hs 200p
KSC2690
C367
NJW0281G
N.I.
22K
HS
D326
IN4148
D327
R435
R437
15
IN4148 56
POWER AMP R/CH
C370
C409 1000p
0.1u 63V
+46V
-46V 250V
L302 N.I.
CZ21-8 R460 R459
1 68 1% R458 100
9 0 S C 3 2 6 P R E D V R - 9 0 2 1 0 0 0
17
U104
7805
D136 D135 D134
IN
+37V
1N4007 5V1 5V1
GND
3W 3W
+46V
D133
1N4148
DGND
C176
N.I.
R261 +37V
N.I.
Low voltage regulator
+18V
R266
100
R247
3W
33K
C186
D130
47U
Q152 R269
18V
C184 R271 25V
MMBT5551 2K2
Q156
47U
2K2
MMBT5551 C182
25V MF R274
R275
0.1U 680
1N4148
Q155
KSC2690 STANDBY 680
R270
R249 3K6 D1291N4148 C181 5K1
hs 0.1U
R276 D131
C172
R250 Q154
+12V KSC2690
4K7 1N4148
R267
0.1u 100V
C194
0.1U
510
L101 0.5uH
C179
DGND
10U
50V
R255
R277
3.3/1W
DGND
680
R268
Q153
C173
MMBT5551 12
0.01u
C183
100V
R254 12V_TRIG
0.1U
680K
C185 R272 C187
47U 2K 10U
C174
MF 25V
C180 -18V 25V
10U
50V
0.22u 63V
DGND
3
6
2
U102-A TP10
TL071
ISC
C376
C175
10U
DGND
25V
0.22u 63V
R466
10K
U301-A
D330
R256 R257 TL071 R475
1N4148 2
680K 1K
6
100K
3
R476
R473
4K7
R467
330K
100K
CZ11-7
C377
R474
10U
D331 2K2
25V
1N4148
TP11
R478
DGND DGND
220K
VFB-L-CH R468 R472
18K 18K
R469 R471
22K 22K
+46V
RL301-C D332 D333
1N4148 1N4148
R447 RL301-B
33K
RL301-A R470 R492
56K 56K
Q352
MMBT5551
D335 1N4148
D328 1N4148 +12V
D3291N4148
R450
C372
0.1u 100V Q353
RELAY
DTC123EKA
L301 0.5uH
R455 DGND
3.3/1W
+46V
C373
0.01u
R454 100V
680K
C374
R495 R485 R486
47k 47k 47k
C381
0.1u
D304
0.22u 63V
Q354
MMBT5401
GS1G
R487
33k
3
6
2
R489
U302-A Q356 D305 33k
D303
MMBT5551
TL071 Q355
MMBT5551
C375
1N4148
1N4148
R490
3.3k
0.22u 63V C378
47u/25V
R457
R456 C380
1K R488
680K 1u
R491
C379 47k
16V
47u/25V 33k
DGND
CZ21-7
C177
10U R464 R462
25V +18V
+18V
1K 1K 5% 1K 5%
U301-B
7
7 U302-B 7
TL071 U102-B
TL071
DGND TL071
4
4 4
C178
R465 R463
10U
-18V
-18V
25V
1K
1K 5%
OUT
+5VX
D132
GS1G
+5V
C197
100uF
DGND 16V
+37V
Q122
KSC2690 R288
33 0.5W FS
C190
R292
hs
220U 35V 680
C188
R293
R289 680 680
22P
C192
220U
Q121
50V
MMBT5551
C193
Q120
220U
MMBT5401 50V J601B
TO PSU J601A
C189
R290 680
R294
9
8
680 +22V
C191
22P
7
+5V
220U 35V R295 -37V 6
hs +5VX
680
R291
5
STANDBY
33 0.5W FS
4
Q119 3
KSA1220 I-V
2
ISC_TRIG
1
+12V
DGND
D334
1N4148
R480
R481
10K
4.3K
R477
Q357
1K
MMBT5551
D382
DGND
1N4148
R479
C421
R482
180K N.I.
TO = 80 degree
+46V
DGND
70 deg: 330 ohm max.
DGND
80 deg: 470 ohm min.
3
VR304
SPEAKER OUT
50K
J103 L-CH OUT
J104 L-CH GND
R-CH GND
J204
R-CH OUT
J203
-18V
M102
J101A J101B
5pin 5pin
PHONE SOCKET
1 1 5
R483
2 2 4
220 2W
3 3 2
4 4
R484
3
5 5
7
220 2W
8
R493
R494
100
100 1
2W
2W
C525
0.1u
J510
TO CHASSIS
C526
M501
0.1u
MP JACK
J504B
TO KEYBOARD J504A
F
1 MP_DET D
2 B
E
J508A
TO MAIN J508B
C
1 HP_SW1
A
2 HP_SW2
MP-L
3 MP-L 4
+5V
2
MP-R
1 MP-R 1
C502 C501
J505A
100p
100p
TO MAIN J505B 5
PROTECTION
HEADPHONE BOARD
R262
+18V
R263
-18V
1K 5%