![background image](http://html.mh-extra.com/html/nad/c-725bee/c-725bee_service-manual_703249021.webp)
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10
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9
1
2
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5
6
CZ312*
DAB Connector
DAB Analog L
DAB Analog R
DAB RXD
DAB TXD
DGND
AGND
DAB Digital IN
VCC
Shield
1
2
3
CZ311*
CON3
TO Ipod TXD
TO Ipod RXD
TO DAB RXD
TO DAB TXD
1
6
2
7
3
8
4
9
5
CZ39
DB 9
R1
10
1
2
3
4
5
6
7
8
CZ310
CON8
TO RS232 TXD
TO RS232 RXD
DGND
TO KEY BOARD
PHONE3
3.5mm mini headphone jack
MP DOCK Data Port
R313 10
R314* 10
DGND
DGND
C725BEE PREAMP SMD MODULE BOARD
C66
0.1u 20%
R620
10
1
2
3
4
5
6
7
8
9
CZ61
CON9
GND
+18V
-18V
LOUT
ROUT
RIN-
RIN+
LIN+
LIN-
C62
220p
R62
220
R64
2.2M
Q6
2
2S
K
209 G
R
R68
1K
R610
430 2%
Q65
A1312-GR
Q6
8
2S
C2881-
Y
C64
22p
R612
1K
Q66
2SA1201-Y
R614
10K
R616
10
C67
0.1u 20%
C68
0.1u 20%
C610
100p
R617
10
Q69
C3324-GR
Q611
C3324-GR
R622
1K
R624
620
C612
1nF
R619
10
C61
220p
R61
220
R63
2.2M
Q6
1
2S
K
209 G
R
R67
1K
R69
430 2%
Q63
A1312-GR
Q67
2SC2881-Y
C63
22p
R611
1K
Q6
4
2S
A
1201-
Y
R613
10K
R615
10
C65
0.1u 20%
C69
100p
R618
10
Q610
C3324-GR
Q
612
C3324-
G
R
R623
1K
R625
620
C613
1nF
+5.5V
1
2
3
4
5
6
7
8
9
CB31
CON9
Moto Pots Borad
3
7
2
8
RT33A
POTALPS
3
6
4
5
RT33B
POTALPS
9
10
RT33C
POTALPS
R390* 10
RCA31C
CD
RCA32A
VIDEO
RCA32C
AUX
RCA31A
MP DOCK
R31
470
R33
470
R35
470
C31
100p
C33
100p
C35
100p
R37 470
C37
100p
4
6
5
RL32B
4
6
5
RL33B
4
6
5
RL34B
4
6
5
RL31B
R349
22K
R351
22K
R353
22K
R355
22K
L-
CH I
NP
UT
S
C725BEE INPUT SELECT CIRCUIT
R39
470
C39
100p
4
6
5
RL35B
R357
22K
RCA31D
CD
RCA32B
VIDEO
RCA31B
MP DOCK
RCA32D
AUX
R32
470
R34
470
C32
100p
C34
100p
R38 470
C38
100p
1
3
2
RL32A
1
3
2
RL310A
1
3
2
RL34A
R350
22K
R352
22K
R356
22K
4
6
5
RL37B
R-
CH I
NP
UT
S
R310
470
C310
100p
1
3
2
RL35A
R358
22K
RCA33D
RECORD R
RCA33C
RECORD L
C325
47u/25
R321 3K
3 M
F
R323
750 M
F
R319
N
.I.
R325
390 MF
R327
180 MF
C327
22n 5%
C329
0.
1u 5% 63V
R329
1K5 MF
R331
390 MF
C331
0.22u 5%
C333
1uF
C335
N.I.
C339
1u/50
ON
OFF
TO VOLUME POT
BAL
AN
C
E PO
T
BASS PO
T
T
R
EBL
E PO
T
5%63V
C337
0.1uF
C321
0.1u
C725BEE TONE CONTROL CIRCUIT
RT
31A
10K
A
RT
32A
10K
A
RT
34A
20K
M
N
C326
47u/25
R322
3K
3 M
F
R324
750 M
F
R320
N
.I.
R326
390 MF
R328
180 MF
C328
22n 5%
C330
0.
1u 5% 63V
R330
1K5 MF
R332
390 MF
C332
0.22u
C334
1uF
C336
N.I.
C340
1u/50
TONE DEFEAT SW
OFF
ON
BAL
AN
C
E PO
T
BASS POT
T
R
EBL
E PO
T
5%,63V
5%63V
C338
0.1uF
C322
0.1U
RT
31B
10K
A
RT32B
10KA
RT
34B
20K
M
N
R407
1K
R402
10K
R404
10K
R403
1K
R405
1K
R406
1K
C417
4u7/50V
C418
4u7/50V
Q402
C1815
Q401
A1015
Q404
C1815
Q403
A1015
VOLUME CONTROL
MOTOR
+5V
C303
220p
C302
220p
C301
10uF/50V
7
8
RL31C
7
8
RL32C
7
8
RL33C
7
8
RL34C
7
8
RL35C
+12V
RCA34A
L PRE-OUT
C341
47u/25
C345
0.1uF
RCA34B
R PRE-OUT
C342
47u/25
C346
0.1uF
PHONE1A
IR OUT
PHONE1B
IR IN
PHONE2
+12V Trigger
R2
10
C3 0.1uF
R434
10K
Q425
2SC1815
R431
1K
Q424
2SA1015
R432
33
+5V
+5V
C319
0.1u 10%
C324
47u/35V
C323
47u/35V
C320
0.1u 10%
1
2
3
4
5
6
7
8
9
CB32
PREAMP SMD MO
DULE
-18V
+18V
1
2
3
4
5
6
7
8
9
CB33
PREAMP SMD MO
DULE
+18V
-18V
R345
220K
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
CZ36
CON17
STEREO
TUNER
PLL CLK1
PLL D1
PLL D0
PLL CE
RDS CLK
RDS DATA
+12V
L-OUT
R-OUT
1
2
3
4
5
6
7
8
CZ37
CON8
STEREO
TUNER
PLL CLK1
PLL D1
PLL D0
PLL CE
RDS CLK
RDS DATA
R311
470
C311
1n2
4
6
5
RL36B
R337
22K
TUNER L
R346
220K
R312
470
C312
1n2
1
3
2
RL36A
R341
22K
TUNER R
RCA33B
TAPE
RCA33A
TAPE
7
8
RL36C
Q33
C1815
Q34
C1815
Q35
C1815
Q36
C1815
Q37
C1815
R369
4K7
R371
4K7
R373
4K7
R375
4K7
R377
4K7
C351
10n
C352
10n
C353
10n
C354
10n
VI
D
EO
CD
T
APE
AU
X
T
URNE
R
R378
4K7
R376
4K7
R374
4K7
R372
4K7
R370
4K7
Q38
C1815
R379
4K7
R380
4K7
ST
R
1
D
2
CL
K
3
Q1
4
Q2
5
Q3
6
Q4
7
VSS
8
QS
9
QS
10
Q8
11
Q7
12
Q6
13
Q5
14
OE
15
VC
C
16
IC32
4094
C358
0.1u
Q39
C1815
R381
5K1
VO
L
-
VO
L
+
IR OUT
IR IN
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
CZ35
CON20
IP SEL DATA
IP SEL CLK
IP SEL STB
+5V
+12V
MP
C355
10n
C356
10n
1
2
3
4
5
6
7
8
9
CZ34
CON9
-
+
Ve
e
1
L1
2
L2
3
L3
4
L4
5
L-
C
O
M
1
6
L5
7
L6
8
L-
C
O
M
2
9
L7
10
L8
11
L-
C
O
M
3
12
ST
13
Vss
14
CL
15
DAT
A
16
R-COM3
17
R8
18
R7
19
R-COM2
20
R6
21
R5
22
R-COM1
23
R4
24
R3
25
R2
26
R1
27
Vdd
28
IC31
T
C9164CNG
OP SEL CLK
OP SEL DATA
L2
L3
L4
L1
L5
L6
L1
L2
L3
L4
L5
L6
R2
R3
R4
R5
R6
R1
R2
R3
R4
R5
R6
D313
16V
D314
16V
R367
2K
R1
R368
2K
+18V
-18V
SPK A
SPK B
VOL-
VOL+
R382
22K
VI
D
EO
CD
T
APE
AU
X
TU
R
N
E
R
MP
OP SEL STB2
O
P
S
EL C
LK
OP SE
L
DAT
A
O
P
S
EL S
TB
2
IP
S
EL D
A
TA
IP
S
EL C
LK
IP
S
EL S
TB
R461
330
R430
4.7K
+
-
IC34A
TL082CP/D
IC34B
TL082CP/D
R362
11K,MF,1%
C347 100nF.63V,5%
R365
10k
RCA35
SUB-OUT
R363
100
C360
100p
-18V
+18V
R361
11K,MF,1%
C348
220nF,63V,5%
R364
10k
R366
10K
+5V
R492
4K7,1%
C444
0.1uF
C350
N.I.
R388
20k
VR302
100
R386
1.8
R384
560 1%
C349
N.I.
VR301
100
R387
20K
R385
1.8
R383
560 1%
Q310
2SK363
R340
10M
C361
N.I.
C362
10n
R433
10K
+12V
+5V
SPK A
SPK B
Unit Protect
GND
-46V
+18V
-18V
STANDBY
Soft clipping
Name
C725BEE Main Board.SCH
Q411
A1015
R436
56K
R435
390K
R489
100K
R457
220K
R451
330K
D423
1N4148
R448
10M
C434
100p/63V
+18V
-46V
-46V
10
Z2 IN L
Z2 IN R
PR IN L
PR IN R
SUBOUT 1
SUBOUT 2
R393
100k
+18V
-18V
R460
10K
C365
47uF
/35V
C366
47uF
/35V
R396 30K
C367 82P
R397
N.I.
C368
N.I.
R398 560 1%
R399 560 1%
12V TRIG
R342
100K
R343
100K
1
3
2
RL38*A
4
6
5
RL38*B
7
8
RL38*C
A
A
K
K
D320*
IN4148
+12V
Q313*
C1815
R3*
4k7
R4*
4k7
C369*
10nF
Unit Protect
1
2
3
CB311*
CON3
MP-R
1
2
3
CB35
CON3
RL37A
RL31A
R394
22K
R36 470
C36
100P
MP-L
Front panel Input
7
8
RL37C
Q314
C1815
R315
4K7
C370
10n
R13
4K7
M
P
DO
CK
+12V
1
3
2
RL39A
4
6
5
RL39B
TONE DEFEAT SW
7
8
RL39C
Q315
C1815
R17
4K7
C371
10n
BAND
MAIN MUTE
BAND
TONE DEF
REC MUTE
MP DOCK
R333
4.7K
R335
68
R347
100K
R334
4.7K
R336
68
R348
100K
R317
470
C317
100pF
C318
100pF
R318
470
R392
100K
R391
100K
MUTE BOARD
1
2
3
4
5
6
7
8
Z2 IN R
Z2 IN L
PR IN R
PR IN L
R415
N.
I.
C419
N.I.
4
6
5
RL310B
4
6
5
RL311B
1
3
2
RL311A
C375
100pF
C374
100pF
7
8
RL310C
7
8
RL311C
Q316
Q317
C1815
R344
4K7
R395
4K7
C376
10n
C377
10n
R354
4K7
R316
4K7
RE
C MUT
E
R359
1K
R360
1K
VR304
10K
VR303
10K
D321
1N4148
D322
1N4148
D323
1N4148
D324
1N4148
D37
1N4148
D38
1N4148
D39
1N4148
D310
1N4148
D311
1N4148
D312
1N4148
D315
1N4148
R18
4K7
TON
E
D
E
F
1
2
3
CZ38
CON3
+12V
1
2
3
CB38
CON3
+12V
MAIN MUT
E
C725BEE PREAMP
Содержание C 725BEE
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Страница 12: ...CD4094 KEYBOARD IC707 IC711 MAINBOARD IC32 ...
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Страница 50: ...SERVICE MANUAL NAD 2008 C 725BEE STEREO RECEIVER NAD ELECTRONICS LTD TORONTO ...