Sony XBR-55X900H Service Manual page 54

2021/04/27 23:25:57 (GMT+09:00)
4.2 : No Picture (BM5/BM5S)
No Picture
Video
No Picture
Check if input OSD
is GREY OUT
OK if it is highlighted
OK
Check wave between
C2825 and IC1000
OK (Vpp: 0.56 V)
Muffin [IC1000]
Problem
→ OK Condition : No solder splash can be seen
*
→ NG Condition : Solder splash can be seen
SAFETY NOTES
NG Check J2800
NG (Vpp: 0V)
Connection,
VIDEO_DET at R2841
OK (Vpp: 3.3 V)
** Detailed check all
NG (Vpp: 0V)
parts at VIDEO_DET
signal Path [R2840]
OK (Vpp: 3.3V)
NG (Vpp: 0 V)
J2800 Connector J2800 Connectivity
Problem
SELF DIAGNOSTIC FUNCTION TROUBLESHOOTING
T R O U B L E S H O O T I N G
** Detailed check all parts at CVBS0P
NG
signal path [R2843/R2844/R2845
/VR2800/D2800
(NX only R2842/C2831)]
OK
Parts Broken
Problem
→ OK Condition : No part short-circuited
**
→ NG Condition : Part short-circuited
SERVICE ADJUSTMENT DIAGRAM HANDLING GUIDE
54
SYS SET