Harman Kardon BDS 280S - Page 31

A
A
B
B
C
C
D
D
1 1
2 2
3 3
4 4
VCLKVCLK_1 VDIN_1VSTB_1 VSTB
VCLK
VDIN
VSTB
VDIN
VFD_RST
F-
38V
F+
F-
VCC_D
VFD_RST
OSC_N
38V
F+
VH_N
VH_NOSC_N
VDD_3.3V
VCC_D
VCC_D
12V
VCC_DVDD_3.3V
VFD_RST
VCLK_1 VDIN_1VSTB_1
R728270 R728270
Q644
N_2N7002
Q644
N_2N7002
G
DS
C777
0.01uF/50V/Y5V
C777
0.01uF/50V/Y5V
D702
1N4148
D702
1N4148
R675 10R675 10
R737 100R737 100
C667
NC/0.1uF/50V/Y5V
C667
NC/0.1uF/50V/Y5V
Q615
NC/NPN_3DG3904M
Q615
NC/NPN_3DG3904M
C773 100pF/50V/NP0C773 100pF/50V/NP0
R696270 R696270
Q636
NPN_MMBT8050C
Q636
NPN_MMBT8050C
L603 680uH/300mAL603 680uH/300mA
R688270 R688270
Q638
NPN_MMBT8050C
Q638
NPN_MMBT8050C
R654
200
R654
200
C666
0.1uF/50V/Y5V
C666
0.1uF/50V/Y5V
C768N
C/1800pF/50V/X7R
C768N
C/1800pF/50V/X7R
R638N
C/2.2K
R638N
C/2.2K
+
100V10ȝF
CE620
+
100V10ȝF
CE620
R72310K R72310K
D701
1N4148
D701
1N4148
R656
10
R656
10
R726 4.7KR726 4.7K
Q614
NC/NPN_3DG3904M
Q614
NC/NPN_3DG3904M
R646NC/2
K
R646NC/2
K
R7311K R7311K
R721 1.5KR721 1.5K
R729 4.7KR729 4.7K
R676 10R676 10
R742
NC/1
K
R742
NC/1
K
ZD606
BZX79C39V
ZD606
BZX79C39V
C767N
C/1800pF/50V/X7R
C767N
C/1800pF/50V/X7R
C638
39pF/50V/NP0
C638
39pF/50V/NP0
ZD704
ZMM3V3/3.3V
ZD704
ZMM3V3/3.3V
C774 100pF/50V/NP0C774 100pF/50V/NP0
R652
1K
R652
1K
+
100V10ȝF
CE618
+
100V10ȝF
CE618
U701
14-VFD162-XX0F-M
U701
14-VFD162-XX0F-M
CS
34
RESET
37
OSC
40
F-
1
TSB
26
TSA
29
DA
31
CP
32
VDD
43
VH
45
F+
51
GND
46
GND
48
R732820 R732820
C633
0.1uF/50V/Y5V
C633
0.1uF/50V/Y5V
C771 100pF/50V/NP0C771 100pF/50V/NP0
R72510K R72510K
R664NC/2
K
R664NC/2
K
R735 100R735 100
Q639
NPN_MMBT8050C
Q639
NPN_MMBT8050C
R727 10KR727 10K
Q641
NPN_MMBT8050C
Q641
NPN_MMBT8050C
Q643
NPN_MMBT8050C
Q643
NPN_MMBT8050C
C769
N
C/1800pF/50V/X7R
C769
N
C/1800pF/50V/X7R
Q613
NC/NPN_3DG3904M
Q613
NC/NPN_3DG3904M
+
CE619
100uF/6.3V
+
CE619
100uF/6.3V
R657
NC/0
R657
NC/0
R639
NC/5
10
R639
NC/5
10
+
CE617
220uF/16V
+
CE617
220uF/16V
R724 4.7KR724 4.7K
R736 100R736 100
R710270 R710270
R730 10KR730 10K
R659
0
R659
0
C632
0.1uF/50V/Y5V
C632
0.1uF/50V/Y5V
C6650.
1uF/50V/Y5V
C6650.
1uF/50V/Y5V
R640NC2
K
R640NC2
K
C772 100pF/50V/NP0C772 100pF/50V/NP0
C776
1000pF/50V/X7R
C776
1000pF/50V/X7R
R653N
C/2.2K
R653N
C/2.2K
R637N
C/2.2K
R637N
C/2.2K
Q637
NPN_MMBT8050C
Q637
NPN_MMBT8050C
R673 2KR673 2K
Q640
NPN_MMBT8050C
Q640
NPN_MMBT8050C
R658 6.2KR658 6.2K
R722 1.5KR722 1.5K
Q642
NPN_MMBT8050C
Q642
NPN_MMBT8050C
R641
NC/1
K
R641
NC/1
K
C775 0.1uF/50V/Y5VC775 0.1uF/50V/Y5V
7-5 7-5
VFD Control & Switch Board Circuit Diagram:
Harman Kardon
BDS 280 + 580 Service Manual
Page 42 of 87