Sony KV-32HS500 Training Manual page 51

R
1 1
G
3 3
B
5 5
12V
7 7
IK 8 8
B BOARD
D BOARD
1 1
200V
HEATER
4 4
Troubleshooting (Board Level)
(Reference Figure 5-1)
The DA-4 and DA-4X chassis's video processing circuits can be evaluated to board level simple by using the
various inputs. The following is a list of inputs versus the circuits active for that particular input.
Video Inputs 1-4: (480i Input)
CH BOARD
R
Q9009
G
Q9010
Q9001
B
Q9011
FIGURE 5-3 - DA-4 CH BOARD (HS)
IC1502 AV switch (U-board)
IC2001 and IC2200 Comb. (M-board)
IC2005 and IC2004 YCT (M-board)
IC2008 (M-board)
DRC circuit (B-board)
MID circuit (B-board)
IC2801 CRT Drive (B-board)
IC9001
V-IN
3
12V IK 200V
2 5
IC9002
V-IN
3
12V IK
2 5
IC9003
V-IN
3
12V IK
2 5
49
5. DA-4 & DA-4X Video Processing
R
8
6
G
8
200V
6
B
8
200V
6
CRT
C31P15-5-3 10/7/02