NAD C 725BEE Service Manual page 21

C725BEE INPUT SELECT CIRCUIT
RL32B
6
RCA31C
4
R31
CD 5
L2
470
C31
R349
100p
22K
RL33B
6
RCA32A
4
R33
VIDEO 5
L3
470
C33
R351
100p
22K
RL34B
6
RCA32C 4
R35
AUX
5
L4
470
C35
R353
100p
22K
RL35B
6
RCA33A
4
R39
TAPE 5
L5
470
C39
R357
100p
22K
RL36B
6
4
R311
TUNER L 5
L6
470
C311
R337
1n2
22K
RL31B
6
4
5
L1
R37 470
C37
100p
RL37B
22K
R355
RCA31A
MP DOCK
R345
220K
CB35
MP-L
3
MP-R 2
1
CON3
RCA31B
MP DOCK
RL31A
RL37A R36 470 R1
C36
100P
22K
R394
3 RL32A
RCA31D 1
R32
CD 2
470
R2
C32
R350
100p
22K
RCA32B
R34
VIDEO
470 R3
C34
R352
100p
22K
RL34A
3
RCA32D 1
AUX 2
R38 470 R4
C38
R356
100p
22K
RL35A
3
RCA33B 1
R310
TAPE 2
470
R5
C310
R358
100p
22K
C358
0.1u
RL36A
3
1
R312
TUNER R 2
470
C312
R6 IC32
R341
1n2
4094
22K
R346
220K
RL38*A
3
1
2
RL38*B
6
4
5
+12V
CZ312*
RL38*C
VCC
1
7 8
2
DAB Digital IN
3
DAB TXD
4 K A
R390* 10 K A
7 8 9 AGND
5
D320* IN4148
DGND
6 DGND
3 4 5 6
CZ311*
DAB RXD R314* 10
7
1 2 DAB Analog L
8 1
DAB Analog R
9 2
Shield
10 3
CON3
DAB Connector
MP DOCK Data Port
3.5mm mini headphone jack
DGND
R313 10
PHONE3
+5.5V CZ310
1
TO DAB TXD
2
TO DAB RXD
3
TO Ipod RXD
4
TO Ipod TXD
5
CZ39
DGND 6
1
7
6
8
2 TO RS232 RXD
7
CON8
TO RS232 TXD
3 TO KEY BOARD
8
4
9
R1
5
10
DB 9
C725BEE PREAMP
C325
47u/25
R325
390 MF
C321
0.1u
C327
22n 5%
C331
R342
0.22u 5%
100K
VR303
C319
10K
0.1u 10%
R327
C323 +18V
180 MF
47u/35V
OFF 3 RL39A
CB32
TONE DEFEAT SW
2
1 ON
2
3
4 R398 560 1%
R396 30K
5
6
C367 82P
R399 560 1%
7
C326
8
47u/25
9
R326
390 MF
C324
C320
0.1u 10% C322 1K5 MF
-18V
47u/35V 0.1U
R343
C332
100K
0.22u
5%,63V
C334
1uF
VR304
5%63V
10K
R328
180 MF
6 RL39B
OFF
TONE DEFEAT SW
5
ON
R492
4K7,1%
+12V
RL31C RL32C RL33C RL34C
D37 D38 D39 D310
1N4148 1N4148 1N4148 1N4148
C351 C352 C353 C354
10n Q34 Q35 Q36
10n 10n 10n
Q33
C1815 C1815 C1815
C1815
R369 R371 R373 R375
4K7 4K7 4K7 4K7
R370 R372 R374 R376
4K7 4K7 4K7 4K7
+12V
+5V
RL37C RL39C
D321 D322
1N4148
1N4148
C370 C371
10n 10n
Q314 Q315
C1815 C1815
R315 R17
4K7 4K7
R13 R18
4K7 CZ38 4K7 CB38
CON3 CON3
+12V +12V
Q313*
C1815
R3* 4k7 R4*
C369* BAND
10nF
4k7
CB311*
1
2
3
CON3
C68
0.1u 20%
CZ61
+18V
1
LOUT
2
LIN-
3
LIN+
4
GND
5
RIN+
6
RIN-
7
ROUT
8
-18V
9
CON9
C725BEE TONE CONTROL CIRCUIT
R329
1K5 MF
C339
1u/50
C333
1uF
5%63V
R331 C337
390 MF 0.1uF
C335
+18V
1 N.I.
CB33
1
2
R397
3
N.I.
4
5
6
7
C368
8
9
N.I.
-18V
R330
C350 R388
N.I.
20k
C340
RT32B
10KA
1u/50
BASS POT
C338
0.1uF
R332
390 MF
C336
4 N.I.
Z2 IN L
-18V +18V
R367 R368
2K 2K
D313 D314
16V 16V
Z2 IN R
+5V
RL35C RL36C
R402
D311 D312
VOLUME CONTROL
10K
1N4148 1N4148
C301
MOTOR
10uF/50V
Q401
-
A1015
C355 C356
Q37 Q38 C417
10n 10n
C1815 C1815 R403 4u7/50V
1K
R377 R379
4K7 4K7
R406
1K
R378 R380
4K7 4K7
Q402
C1815
C303
220p
VOL+
VOL-
D323 D324
RL310C RL311C
1N4148 1N4148
+18V
C376 C377
10n Q317
10n
Q316
C1815
Q411
R344 R395
A1015
4K7 4K7
R448
10M
R316 R354 R451
4K7 4K7 330K
C434
100p/63V
MAIN MUTE
REC MUTE
C725BEE PREAMP SMD MODULE BOARD
Q65
A1312-GR
R68 Q69
1K C3324-GR
C62
220p R612
C64 1K
22p
R616
R62
C610 10
220 C612
R622
100p
1nF
R64 1K
2.2M
R610
430 2%
R617
Q611
10
C3324-GR
R624
620
C67
Q66
0.1u 20%
2SA1201-Y
R614
10K
RT33A
CZ34 CB31 POTALPS
2 8
TO VOLUME POT
9 1
8 2
7 3
6 4
5 5
4 6
3 7
+ 2 8
- 1 9
Moto Pots Borad
CON9 CON9
C345
0.1uF
R387
C349
20K
N.I.
C341
47u/25
PR IN L
R335
PR IN L 1 5 RL310B
68
6
VR301
R333
100
4.7K
R383 R385
560 1% 1.8
R336
PR IN R 2 2 RL310A
68
R384 R386
3
R334
560 1% 1.8
4.7K
VR302
R317
100
470
Z2 IN L 5 RL311B
5
6
C342
R318
470
Z2 IN R 8 2 RL311A
47u/25
3
PR IN R
C346
0.1uF
R365 R364 1K
R359
10k 10k
-18V
C347 100nF.63V,5%
IC34A
Q310
TL082CP/D
R363
2SK363
R366
R362
100
10K
11K,MF,1%
C361
R361
N.I.
C348
220nF,63V,5%
IC34B 11K,MF,1% +18V
TL082CP/D
R360 1K
+5V
R430
Q425
R433 10K
2SC1815
4.7K
R434
Q424
2SA1015
R432
R431
33
1K
R404
10K
Name
+
C725BEE Main Board.SCH
Q403
C418 A1015
4u7/50V R405
1K
+5V
+12V
STANDBY
R407
1K
Q404
Soft clipping
C1815
+5V
C302
220p
+12V
Unit Protect
SPK B
SPK A
-18V
+18V
-46V
R489
100K
R436
56K D423
R457
1N4148
220K
R435
390K Q39
R381
C1815
5K1
R382
-46V
22K
C66
R67
1K
0.1u 20%
C61
220p
R620
10
R61
C69
R63
220
2.2M 100p
C65
0.1u 20%
RT33B RT33C
POTALPS
POTALPS
4 5
MUTE BOARD
3
RCA34A
4
L PRE-OUT
R347
100K
C374
100pF
10
4
RCA34B
1
R PRE-OUT
R348
100K
C375
100pF
6
RCA33C
4
RECORD L
R391
100K
C317
100pF
7
RCA33D
1
RECORD R
R392
100K
C318
100pF
SUBOUT 1
SUBOUT 2
RCA35
D315
SUB-OUT
R340
C360
R393
10M
100k 100p
1N4148
+5V PHONE1A
IR OUT
10K
R460
PHONE1B
10K
R461
IR IN
330
C362
12V TRIG
10n
PHONE2
R2 10
+12V Trigger
C3 0.1uF
CZ35
MP DOCK
20
BAND
19
IR OUT
18
IR IN
17
IP SEL CLK
16
IP SEL DATA
15
IP SEL STB
14
OP SEL DATA
13
OP SEL CLK
12
OP SEL STB2
11
Unit Protect
10
9
8
7
TONE DEF
6
SPK B
5
SPK A
4
3
2
1
CON20
CZ36
CON17
L-OUT
17
16
R-OUT
15
+12V
14
13
12
C444
11
0.1uF
10
STEREO
9
TUNER
8
PLL CLK1
7
PLL D1
6
PLL D0
5
PLL CE
4
RDS CLK
3
RDS DATA
2
1
C419
N.I.
CZ37
STEREO
8
TUNER
7
PLL CLK1
6
PLL D1
5
PLL D0
4
PLL CE
3
RDS CLK
2
RDS DATA
1
CON8
Q63
A1312-GR
Q610
C3324-GR
Q67
2SC2881-Y
R611
C63 1K
22p
R615
10
C613
R623
1nF
1K
R69
430 2%
R618 R619
R625 10 10
620
R613
10K