Sony PFM42V1 Triage & Troubleshooting Manual page 40

Address
Board
YDT
Board
&
Drive
ICs
Ysus
Scan
Board
YDB
Board
&
Drive
ICs
Address
Board
Address
Board
YDT
Board
&
Drive
ICs
Ysus
Scan
Board
YDB
Board
&
Drive
ICs
Address
Board
Address
Board
YDT
Board
&
Drive
ICs
Ysus
Scan
Board
YDB
Board
&
Drive
ICs
Address
Board
PDP-04
Address Address Address
Board Board Board
Xsus
Scan
Board
Address Address Address
Board Board Board
Address Address Address
Board Board Board
Xsus
Scan
Board
Address Address Address
Board Board Board
Address
Address Address
Board Board Board
Xsus
Scan
Board
Address Address Address
Board Board 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 .
Replace Address Board (connections & Flex Cable OK)
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 .
Single Vertical Black Line
nd
2 – Check the drive ICs on
st the flex cables between the
1 – Confirm secure
connections between Address and Panel for physical
Address board and Panel damage .
Assembly.
Replace Panel Assembly for
defective Flex cable ICs and/or
damaged Flex cable .
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 .
Single Vertical Black Line
nd
2 – Check the drive ICs on
st
1 – Confirm secure
the flex cables between the
connections between Address
Address board and Panel for
Board and the Panel Assembly .
physical damage .
Replace Panel Assembly for
defective flex cable ICs
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 .
FWD50PX1 Troubleshooting
rd
3 – Replace Address board
(connections and ICs OK )
rd
3 – Replace Address board
(Flex cable and ICs OK)
39