Switching Regulator [Csr] - Hitachi VK-S274 Service Manual

1 2
SWITCHING REGULATOR [CSR] SCHEMATIC DIAGRAM
5.0
IC1604
0 VCO/PHASE COMPA.
E
IDC-7S08[E2]
AMP 0 0
3.2 0 0
5.0
3.2 0
3.3
3.3 0
0
3.2
0
0
0
0
0
D
CODE PART NAME
AE 2SB1424R
AR 2SB1462
MPL1 MPL-1
QC 2SC2620
13 DTA143EE
26 DTC144EE
64 DTC114YE
5K XP4401
C
C 1SS353
MO MA132WA
S4 D1FS4
10L MA3100L
VOLTAGE: REC MODE
*
B
A
6 - 6
1 2
3
5.0
LEVEL SHIFT
5.0 5.0
5.0 5.0
0
0 0
3.3
5.0 0
5.0 5.0
4.2
0 0
4.2 0 2.0
0.2
0
2.6 3.2 5.0
5.0
0
8.2
7.7
7.4
9.0
8.7 7.9 7.8
8.0
8.1 6.9 6.8
7.0
7.1 5.9 5.8
7.5
7.4
7.3
8.2
7.9
7.4
8.3
0 8.1 8.1
7.3
5.0
8.1
7.3
6.0
8.2
7.7
7.4
8.3
7.8
7.3
8.0
7.5
7.0
1.5
1.5
MWM
0.9
1.5
1.5
0
8.1
0.8 0 1.5 0 8.1 8.1 8.1 8.1 1.0 1.5 1.5
1.6
1.3
1.0
3
4 5
2.4
[TYPE S/SE] Y/C MIX &
1.9
VIDEO AMP
0
5.0
Y
6dB
0
C
0
22P:[TYPE S]
12P:[TYPE SE]
2.0
2.1
2.9
1.1
2.2
C1608
[TYPE K/KE]
0.1
0
8.0
0
8.1
0
8.0
7.5
7.2
8.2
7.7
7.4
8.0
0
8.1
0
8.0
0
6.5
5.0
8.2
8.1
7.7
8.9
7.4
7.9
8.0
6.5
0
8.1
0
0
1.5
1.8
8.2
7.7
1.5 7.4
1.5
1.2
8.0
0
1.3
-10
1.8
CAM SW
8.1
8.2
7.7
7.3

SWITCHING REGULATOR [CSR]

4 5
6 7
VIDEO
5.0
5.0
2.1
2.2
1.6
2.0
2.3
1.1
1.9
0 1.6 2.1
2.0
0
2.1 3.0 0
C
18k
33k
-7.1 15.1
-7.1
2SC4081
SHORT
PROTECT
6 7
8
OUTPUT
Y
(M)
(M)
Y
C
To
SENSOR
[SP]
PG1002
8