Sony PFM42V1 Triage & Troubleshooting Manual page 31

YDT
Board
&
Drive
ICs
Ysus
Scan
Board
YDB
Board
&
Drive
ICs
XL address Board
YDT
Board
&
Drive
ICs
Ysus
Scan
Board
YDB
Board
&
Drive
ICs
XL address Board
YDT
Board
&
Drive
ICs
Ysus
Scan
Board
YDB
Board
&
Drive
ICs
XL address Board
PDP-04
No Video (Vertical Black Bar ) 1/2 of screen
st
1 – Confirm secure connections
between XR , XL, and Control
Boards .
Zsus
Scan
Board
XR address Board
Single Vertical Black Line (right side of screen )
st
1 – Confirm secure
connections between XR , XL,
and Control Boards .
Zsus
Scan
Board
XR address Board
Single Vertical Black Line (left side of screen )
st
1 – Confirm secure
connections between XL Board
Zsus and the Panel Assembly .
Scan
Board
XR address Board
nd
2 – Confirm 5V and VA
rd
3
voltages to XR board .
following order .
A) Replace XR -Board
B) Replace Control Board
nd
2 – Check the drive ICs on
3
the flex cables between the XR
and Panel for physical damage .
Replace Panel Assembly for
defective flex cable ICs
3
nd
2 – Check the drive ICs on
(Flex ICs OK)
the flex cables between the XL
board and Panel for physical
damage .
Replace Panel Assembly for
defective flex cable ICs
FWD42PV1 Troubleshooting
– Replace boards in the
rd
– Replace XR board
rd
– Replace XL board
30