Hitachi VK-S454R Service Manual page 57

1 2
2-3 CSR Schematic Diagram
G
5.0
VCO/PHASE COMPA.
5.0 5.0
0
0
5.0
5.0
F 0 0
5.0 0 5.0
FV PULSE GEN.
0
0
4.3
0
4.3
0 2.6
3.1 0
0 4.9
3.1
3.1 3.1 3.1
0
0
E
CODE PART NAME
AE 2SB1424
D
AR 2SB1462
BR 2SC4081
QC 2SC2620-QC
13 DTA143EE
26 DTC144EE
64 DTC114YE
5K XP4401
C 1SS353
J SB07-03C
C
MO MA132WA
MP MA133
S4 D1FS4
VOLTAGE: REC MODE
B
A
1 2
3 4
IC1602
SN74AHCT125PW
LEVEL SHIFT
5.0 5.0
0 0
5.0 0 3.2
5.0 5.0
0 3.0
0 0
0
0 4.9
0 5.0
0
* C1617
VK-S454R:22P
*
VK-S454ER:12P
8.1
8.1
7.5
5.4
6.0
7.5
0 7.2 8.2 8.2 0
8.1
8.2
7.6
8.2
8.1 8.1 8.1 8.1
5.0
6.2 7.5 5.4 7.5
8.2 7.3 7.2
6.0
1.5
1.5
PWM
0.9
1.5
1.5
1.1 1.3
7.9
0.8 0 1.5 0 7.9 7.9 7.9 7.9 7.9 1.5 1.5
1.5
1.1
3 4
5
0.7
0
Y/C MIX. &
VIDEO AMP 0.7
0
0 5.0
1.0
0
0
0 5.0
0.6 0
0 0
0
0.6
0
0
0
0.6
0
0.6
0
8.0
8.2 0
8.1
7.5
8.0
8.2 0
8.2
8.1
8.1
8.2
7.5
8.1
7.5
8.0
8.2 0
8.2
6.0
1.5
1.8 8.1
7.5
1.5
1.5
1.2
8.0
1.8
8.2
0
8.1
7.5
-6.8
5
- 6 -
6 7
5.0 5.0
2.4
1.7
2.5
0
2.1
1.0
0 1.7
0
0
0
1.0
2.5 3.3
0 0
0
15.2
-6.6
CSR
6 7
8
G
OUTPUT
F
E
IC1502
QP20WZ51
7.2V REG
8.4
8.4
7.2V
7.2
REG
2.7
0
GND
D
C
B
To
SP
A
PG1002
8