Diagnosis For Picture Problem (All Over The Screen) - Panasonic TH-37PX60U Technical Manual
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Also See for TH-37PX60U:
- Service manual (210 pages) ,
- Operating instructions manual (60 pages) ,
- Technical manual (98 pages)
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Diagnosis for Picture Problem
<Diagnosis (1)>
Enter the "Internal Test Pattern Generator"
or
Is the screen "White", after disconnecting the connector "D5"? (*1)
<Result>
OK
Test Pattern
or White Picture
<Cause>
DG
( and possibly D) Board defect
IC1103
DG
MICRO
PROCESSOR
LVDS
IC4037
IC4036
LVDS
DG
GC5
TRANS
5
MITTER
<Defective Area>
Up to D Board
Diagnosis for Picture Problem
<Diagnosis (2)>
Confirm the waveform at "TPSC1" of the SC board
<Result>
Correct Waveform
OK
Waveform
<Cause>
D
Board defect
IC9500
IC9900
PICTURE
PLASMA AI
OUTPUT
LVDS
D5
S.F. PROCESSOR
RECEIVER
DISCHARGE
CONTROL
<Defective Area>
Up to SC Board
displayed
IC9500
IC9900
PICTURE
PLASMA AI
OUTPUT
LVDS
D5
S.F. PROCESSOR
RECEIVER
DISCHARGE
CONTROL
D
Video DATA (R)
DATA
Video DATA (L)
DRIVER
Scan Control Pulse
Sustain Control Pulse
(All Over the Screen)
<Result>
NG
Test Pattern
or White Picture
<Cause>
D, SC,SU,SD
SC
Test Pattern
White Picture
(*1)
D
DATA
Video DATA (R)
DRIVER
Video DATA (L)
Scan Control Pulse
Sustain Control Pulse
From D Board to Panel Drive Circuit
(*1) PX600/60Series Only
41
(All Over the Screen)
Sample of NG Waveform
<Result>
NG
Waveform
Here
<Cause>
SC,SU,SD
TPSC1
SC
SU
<Back side view>
SD
Buffer IC
Panel Drive Circuit
42
not displayed
Board defect
Refer to "Diagnosis (2)"
on next page
SU
<Back side view>
SD
Buffer IC
Buffer IC
Board defect
Refer to "Diagnosis (3)"
on next page
Buffer IC
SS
SS
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Troubleshooting
