Sony XR-55A95K Service Manual page 45

TROUBLESHOOTING
4.2 No Picture
No Picture
Video
No Picture
NG
* Check J2800
Check if input OSD
Connection, VIDEO_
is GREY OUT
DET at R2841
OK if it is highlighted
OK
** Detailed check all
parts at VIDEO_DET
signal Path [R2840]
NG (Vpp: 0 V)
Check wave between
C2825 and IC1000
OK (Vpp: 0.56 V)
Muffin [IC1000]
Connector
Problem
Problem
NG (Vpp: 0V)
OK (Vpp: 3.3 V)
NG (Vpp: 0V)
OK (Vpp: 3.3V)
** Detailed check all parts
at CVBS0P signal path
[R2843/R2844/R2845
/R2852/R2853/VR2800/
J2800
J2800
Connectivity
Problem
NG
D2800
OK
Parts Broken
Condition Actions to be taken
Refer to IC troubleshooting for further
Muffin [IC1000]
investigation
Problem
J2800
Connector
Problem
Change Connector
J2800
Connectivity
Problem
Change Part
Parts Broken
*  OK Condition : No solder splash can be seen
 NG Condition : Solder splash can be seen
**  OK Condition : No part short-circuited
 NG Condition : Part short-circuited
45
SYS SET