Read Sony XBR-43X830C / XBR-49X830C / XBR-49X835C / XBR-49X837C / XBR-49X839C Service Manual online
XBR-43X830C, 49X830C, 835C, 837C, 839C
106
TROUBLE SHOOTING
3-5-2. No Picture AEP Destination (BMFL/BMFW) VIDEO
Video 2
No Picture
Check wave
Between
C7515/C7518/C7520
and IC1000
**
Detailed check all parts
at signal path of:
Y1P : [D7530/R7524/C7514/
R7527]
PB1P : [VD7508/R7529/C7517/
R7530]
PR1P : [VD7509/R7532/C7519/
R7553]
OK
Check if input OSD
is GREY OUT
OK if it is highlighted
Component
No Picture
NG
*
Check J7504 Con
VIDEO_DET at
R7539,
CR_DET at R7538
Check wave between
C7512 and IC1000
**
Detailed check all parts
at CVBS3P signal path
[D7530/R7524/R7525]
Check if input OSD
is GREY OUT
OK if it is highlighted
*
Check J7504
Connection,
VIDEO_DET
At R7539
Muffin [IC1000]
Problem
OK
NG
Muffin [IC1000]
Problem
No Picture AEP
J7504 Connectivity
Problem
**
Detailed check all
parts at VIDEO_DET
signal Path [R7535]
Parts Broken
J7504 Connector
Problem
OK
NG
**
Detailed check all parts
at VIDEO_DET signal
Path [R7535] and CR_DET
signal path [R7534]
Parts Broken
J7504 Connector
Problem
OK
NG
J7504 Connectivity
Problem
**
OK Condition : No part short-circuited
NG Condition : Part short-circuited
*
OK Condition : No solder splash can be seen
NG Condition : Solder splash can be seen
OK (Vpp: 1 V)
NG (Vpp: 0 V)
OK (Vpp: 1 V)
NG (Vpp: 0 V)
[All voltage measurement using Oscilloscope]
OK (Vpp: 3.3 V)
NG (Vpp: 0 V)
OK (Vpp: 3.3 V)
NG (Vpp: 0 V)
OK (Vpp: 3.3 V)
NG (Vpp: 0 V)
OK (Vpp: 3.3 V)
NG (Vpp: 0 V)
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