Sony KD-49X7 D Series Service Manual page 103

4.2/4.3 : No Picture ALL Destination (BFM/BM2)
[All voltage measurement using Oscilloscope]
No Picture
Video 2
No Picture
*
Check J2601
NG
Check if input OSD
Connection,
is GREY OUT
VIDEO_DET
OK if it is highlighted
At R2631
OK (Vpp: 3.3 V)
OK
** Detailed check all
parts at VIDEO_DET
signal Path [R2630]
OK (Vpp: 3.3V)
NG (Vpp: 0 V)
Check wave between
C2628 and IC1000
OK (Vpp: 1 V)
Muffin [IC1000]
J2601 Connector
Problem
Problem
 OK Condition : No solder splash can be seen
*
 NG Condition : Solder splash can be seen
NG (Vpp: 0V)
NG (Vpp: 0V)
**
Detailed check all parts
NG
at CVBS3P signal path
[D2609/R2621/C2612/R2643]
OK
J2601 Connectivity
Parts Broken
Problem
103
 OK Condition : No part short-circuited
**
 NG Condition : Part short-circuited
103