Panel Distortion Diagrams - Sony PFM42V1 Triage & Troubleshooting Manual

Panel Distortion Diagrams

PDP-04
Address Address Address
Board Board Board
YDT
Board
&
Drive
ICs
Ysus
Scan
Board
YDB
Board
&
Drive
ICs
Address Address Address
Board Board Board
Address Address Address
Board Board Board
YDT
Board
&
Drive
ICs
Ysus
Scan
Board
YDB
Board
&
Drive
ICs
Address Address Address
Board Board Board
Address Address Address
Board Board Board
YDT
Board
&
Drive
ICs
Ysus
Scan
Board
YDB
Board
&
Drive
ICs
Address Address Address
Board Board Board
Address
Board
No Video (Horizontal Black Bar) lower 1/2 of screen
st
1 – Confirm secure connections between Ysus and
YDB boards . Check Flex Cable between YDB and
Panel Assembly for physical damge .
Xsus
Scan
Board
Replace YDB board (connections & Flex Cable OK)
Replace Panel Assembly (Flex Cable NG)
Address
Board
Address
Board
No Video (Horizontal Black Bar) upper 1/2 of screen
st
1
– Confirm secure connections between Ysus and
YDT boards . Check Flex Cable between YDT and
Panel Assembly for physical damge .
Xsus
Scan
Board
Replace YDT board (connections & Flex Cable OK )
Replace Panel Assembly (Flex Cable NG)
Address
Board
Address
Board
No Video (Vertical Black Box) 1/8 of screen
st
1 – Confirm secure connections between associated
address board and the Panel Assembly . Check driver ICs
for physical damage .
Xsus
Scan
Replace Address Board (connections & Flex Cable OK)
Board
Replace Panel Assembly (Flex Cable or Driver ICs NG)
NOTE: This same type of symptom can occur due to any
defective address boards . The black box will occur in the
lower or upper part of the screen below or above a
particular address board .
Address
Board
FWD50PX1 Troubleshooting
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