NAD C 720BEE - Page 19

D52 15V
C54
N.I.
AC POWER CORD
C535
4n7/400V
SW52
POWER SWITCH
1 2 3
CZ55
!
!
C51
10n/250V
D51 KBU8D
C52
10n/250V
D55
KBU8D
C517
15000uF/50V 10%
C518
15000uF/50V 10%
Q518 C1815
Q517
A1015
D531
TIC116D
D532
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
2M2
Q519
A1015
Q520 C1815
R566 4K7
D513 1N4004
R544 22K
C523
3300u/50V
C524
2200u/50V
1 2 3 4
CB54
1 2 3
CB55
!
! !
!!
F51F52 F54 F53
! ! ! !
H1 H2 L1 L2 G
GND GND +46V -46V -37V +37V I-V AC DET. TRIG
NAD C720BEE POWER CIR.
10%
10%
D501 DB104
C533 4700uF/16V
C536 100uF
1 2 3
CB56
1 2 3
CZ56
F55
500mA/250V
6.3A/250V X4
RED GRAY BLACK ORANGE PURPLE
1 3
CB57
1 3
CZ57
1 2 3 4 5
CB51
1 2 3 4 5 6 7
CB52
1 2 3 4 5 6 7
CZ52
1 2 3 4 5
CZ51
1 2 3
CB58
1 2 3
CZ58
1
1
2
2
AC OUTLET
36.4V 36.4V 0V 28.5V 28.5V 8V 0V
R567 10K
C53
330u/50V
C55 10uF,50V
Q58 KSA1220
D53 30V
R568 3K3
1 2 3 4 5 6 7 8 9
10
CB53 CON10
T501
TRANSFORMER
0V 32V 0V
VFD VFD -30V 5V GND
D54 DB104
2.1V 2.1V
!
C56
0.22uF
BLUE BLUE RED RED YELLO YELLO BLACK
D56
DB104
! !!
!
! ! !
!
! !
!
3
1
2
IC51
AMS1117-5.0
SCHEMATIC DIAGRAM (2/4)
POWER SUPPLY CIRCUIT FOR Vm1.6
PCB-2: POWER BOARD FOR Vm5.0