Sony KD-43X7 H Series Service Manual page 90

2020/12/12 02:35:59 (GMT+09:00)
2.3.7 No Picture – Investigation flow (WW Destination)
BKR
Video
No Picture
Check if Analog Video
Input UI is selectable?
Yes
Check waveform
before C2006.
Is it Vpp : 1.2V?
OK (Vpp: 1.2 V)
IC5000 Problem.
(Refer IC troubleshooting
manual)
SAFETY NOTES SELF DIAGNOSTIC FUNCTION
T R O U B L E S H O O T I N G
No
**Check all parts
at CVBS0P signal path.
NG (Vpp: 0 V)
[VR2000,R2138,R2139,
R2017,R2038,C2029,
C2006,C2030]
Parts Broken.
(Change Part)
TROUBLESHOOTING
S E C T I O N 3
Checking condition:
- TV ON, *RCA video cable is connected to composite source output
at TV side
- TV UI Display : AV(WW)
Check R2020 voltage.
Is it 3.3V?
OK
NG
J2002 Connector
Problem.
(Change connector)
** OK Condition : No part short-circuited
NG Condition : Part short-circuited
SERVICE ADJUSTMENT
OK (Vpp: 3.3 V)
NG (Vpp: 0 V)
DIAGRAMS PANEL HANDLING
J2002 Connectivity
Problem.
90
FACTORY DATA RESET
SYS SET