Sony PFM42V1 Triage & Troubleshooting Manual page 51

YDT
Board
&
Drive
ICs
Ysus
Scan
Board
YDB
Board
&
Drive
ICs
XL address Brd
YDT
Board
&
Drive
ICs
Ysus
Scan
Board
YDB
Board
&
Drive
ICs
XL address Brd
PDP-04
1
between Ysus & YDT/YDB boards .
Check VS and 5V power supplies
Zsus
to Ysus board .
Scan
Board
Replace G-board (Volatge(s) NG)
Replace Ysus (Priming NG)
Replace Control Board (Priming
OK )
XC address Brd XR address Brd
Control Board
Zsus
Scan
Board
XC address Brd XR address Brd
No Video – Black Raster
st
– Check flex cable connections
Pixelization & Black Areas In Video
st
1 – Confirm connections and
power supply voltages (VS & 5V) to
Zsus board are secure .
Confirm Flex cable connections
between Zsus board and Panel .
FWD50PX2 Troubleshooting
rd
nd
3
2 – Check connections
connections to Zsus board .
between Ysus and Control
boards are secure .
Replace Zsus (connections &
Connections & Voltages OK
voltages OK )
A) Replace Ysus
B) Replace Control board
nd
2 –
A) Replace Zsus board (all connections
and voltages OK )
B) Replace G-board (voltages NG)
C) Replace Plasma Panel (Flex cable NG)
– Check all voltages and
50