D52
6V2
C54
47uF/25V
C535
4n7/400V
C51
10n/250V
s2
+
s1
-
D51
KBU8D
C52
10n/250V
s2
+
s1
-
D55
KBU8D
C517
15000uF/50V 10%
C518
15000uF/50V 10%
Q517
A1015
D531
TIC116D
R558
1K
R563
22K
R561
100
R562
1K
R560
1K
R559 1K
R565
100
R564 22K
R531
0.05/3W 5% CE
R532
220
Q510
A1015
Q59
A1015
R534
2K2
R533
1M
Q519
A1015
R566
4K7
D513
1N4004
R544
22K
C523
3300u/50V
C524
2200u/50V
1
2
3
4
CB54
1
2
3
CB55
!
!
F51
I-V
AC DET.
TRIG
C725BEE POWERBOARD
10%
10%
D510
DB105
1
2
3
CB56
1
3
CB57
1
2
3
4
5
CB51
1
2
3
4
5
6
7
8
9
10
CB52
1
2
3
CB58
36.4V
36.4V
0V
28.5V
28.5V
R567
15K
C53
330u/63V
C55
10uF,63V
Q58
KSC2690
R568
3K3
1
2
3
4
5
6
7
CB53
To Main board
D54
DB104
DGND
C56
0.22uF
D56
DB104
PGND
DGND
R569
330K
C531
10uF/400V
UV
1
BP
2
D
4
S
5
S
6
S
7
S
8
IC51
TNY274
C534
10nF/1KV
R572
100K/1W
D58
FR107/UF4006
T51
EE16
D59 SR540
C536
0.1uF
C533
330uF/10V
IC53
PC817
PGND
C530
0.1uF/16V
R570
100
R571
510
DGND
RL51
Relay-SPST
D533
1N4148
Standby
C539
4N7/400V
R574
4K7
Q522
C1815
R575
4K7
DGND
+5.5V
Standby
DGND
C544
10nF
+5.5V
L52
10uH
C545
330uF/10V
R576
0.33,1/4W
C546
2.2nF/250V,Y1
+46V
-46V
+39V
+37V
-37V
Q518
C1815
Q520
C1815
D53
39V
D57
4V7
D532
TIC116D
AC POWER CORD
1
2
3
4
5
6
7
8
9
10
CZ52
2.6V
40V
SW52
POWER SWITCH
BL
UE
2.6V
1
3
CZ57
Y
E
LLOW
!
1
2
3
CZ55
!
0V
RED
1
2
3
CZ58
!
ORANGE
BL
UE
!
BLACK
0V
!
Y
E
LLOW
!
!
!
1
2
3
CZ56
!
BL
ACK
1
1
2
2
AC OUTLET
1
2
3
4
5
CZ51
GRAY
PURPLE
1
2
3
4
5
6
7
CB59
To Key board
DGND
+39V
To Main board
1
1
2
2
3
3
4
4
L51
FILTER INDUCTOR,48mH
!
T2AL/250V For 230V Mains Version
T4AL/250V For 120V Mains Version
!
DGND
C725BEE TRANSFORMER
17V
10V
0V
D538
DB104
D536
DB104
IN
IC55
LM7805M
D537
DIODE
C551
100uF/16V
C552
4700uF/25V
C550
0.1uF
DGND
C553
0.1uF
C554
100uF/25V
C549
2200uF/35V
IN
IC52
LM7812M
DGND
+12V
+12V
+5.6V
Transformer Protect Det.
Summary of Contents for C 725BEE
Page 1: ...NAD SERVICE MANUAL C 725BEE STEREO RECEIVER C 725BEE STEREO RECEIVER ...
Page 12: ...CD4094 KEYBOARD IC707 IC711 MAINBOARD IC32 ...
Page 17: ...TC9164 MAINBOARD IC31 PIN CONNECTION BLOCK DIAGRAM ...
Page 18: ...TNY274 POWERBOARD IC51 PIN CONNECTION BLOCK DIAGRAM ...
Page 50: ...SERVICE MANUAL NAD 2008 C 725BEE STEREO RECEIVER NAD ELECTRONICS LTD TORONTO ...