Sony PFM42V1 Triage & Troubleshooting Manual page 13

YDT
Board
&
Drive
ICs
Ysus
Scan
Board
YDB
Board
&
Drive
ICs
Control Board &
XL address Board
YDT
Board
&
Drive
ICs
Ysus
Scan
Board
YDB
Board
&
Drive
ICs
Control Board &
XL address Board
YDT
Board
&
Drive
ICs
Ysus
Scan
Board
YDB
Board
&
Drive
ICs
Control Board &
XL address Board
PDP-04
No Video (Vertical Black Bar ) 1/2 of screen
st
1 – Confirm secure connections
between XR and Control /XL
Boards .
Zsus
Scan
Board
XR address Board
Single Vertical Black Line (right side of screen )
st
1 – Confirm secure
connections between XR and
Control/XL Board.
Zsus
Scan
Board
XR address Board
Single Vertical Black Line (left side of screen )
st
1 – Confirm secure
connections between Control /
XL Board and the Panel
Zsus
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
board (Flex ICs OK)
the flex cables between the
Control/XL board and Panel for
physical damage .
Replace Panel Assembly for
defective flex cable ICs
PFM42V1 Troubleshooting
– Replace boards in the
rd
– Replace XR board
rd
– Replace Control/XL
12