Diagnosis by Removing the A5 Connector
IC9500
PICTURE
OUTPUT
IC9900
S.F. PROCESSOR
DATA
DRIVER
To C Board
LVDS
RECEIVER
White Picture
D
LVDS
A
MICRO
PROCESSOR
IC4510
Peaks
Lite
IC1100
HDMI I/F
PLASMA AI
VIDEO DATA
D
5
A5
<Purpose>
Symptom such as “No picture, No OSD, Sound OK”
is mainly caused by a defective A or D board. The internal
pattern generator cannot be accessed due to the loss of OSD. This method makes it possible to determine
whether the A board or the D (SC,SS) is defective.
<Block Diagram and Explanation>
1. This white pattern is generated by IC9900 on D board.
2. When the TV is plugged in after disconnecting connector A5, it turns on automatically and a white picture is
provided to the panel drive circuit.
If the panel drive section of the unit is ok, a white picture is automatically
displayed by the PDP.
D board (SC or SS)
A Board (D board)
Defective Board
No Picture
White Picture
Pattern
<Diagnosis>
Connect the TV after removing A5 Connector
<Symptom>
No picture (Sound OK)
<Position of A5 Connector>
<Model>
2007 Models ONLY
30
IC8001
Summary of Contents for Viera TH-42PX75U
Page 5: ...Troubleshooting Shutdown Problems 5...
Page 26: ...26...
Page 27: ...Troubleshooting for Picture Problems 27...
