Troubleshooting - Sanyo PDP-42H1EV Service Manual

I Troubleshooting
No Power
Refer to Schematic Diagram or Power Supply Line, find out the part of trouble.
In advance check the AC cord and power SW to be on.
Is LED flashed?
Yes
Is
the voltage of
all lines in Power Unit
supplied?
Yes
(or the voltage of some
lines is not supplied.)
After few seconds,
the set is switched off.
Check 'Fail' Circuit to refer
service manual.
No Picture
Refer to Schematic Diagram or Chassis Block Diagram, find out the part of trouble.
In advance check the setting mode according to Instruction Manual.
Yes
All Mode ?
No
AV1, AV2, AV3
D-SUB, AV4
Is there
Yes
signal from IC1123
(15,19,21) in Main
Unit ?
No
Check arround IC1123 in Main Unit.
Also check the line from IC1123 to
AV4, or D-SUB terminal.
No
Is fuse (F001)
in Sub Power Unit
broken?
No
(All 0V)
Check arround IC601, IC301, IC751, or
PDP panel module is broken.
Is there
video signal of
monitor out
Yes
Is there
Yes
signal from IC1124
(15,19,21) in Main
Unit ?
No
Yes
No
Check arround IC1001 or IC7101 in Main Unit.
Also check the line from IC1001 to AV1, AV2,
or AV3 terminal.
No
Check arround IC401 or IC501 in Main Unit.
Check arround IC1124 in Main Unit.
-25-
Panel Power Unit
is broken.
Check '5VSTB' line in SUB
CPU or Main Unit.
Also check Panel Power
Unit is broken.
Panel Power Unit
is broken.
Check arround IC207 in Main Unit.
No
i
480 ?
Yes