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[Power Supply trouble shooting]
No Power
(No picture, and No sound)
Is Power Indicator
orange lighted?
No
Does Power Indicator
red blink?
No
Does Power Indicator
blue blink?
No
Is Power Indicator
not lighted?
No
Power Indicator
blue is lighted normally.
Does Power Supply Unit
output +10V/12V?
No
Check Power Supply Unit. (＊
＊) Power-On control signal for Power Supply Unit
(1) AC switch : ON
(2) PoWER_1 (CN63 [6]) : High
(3) PoWER_2 (CN63 [7]) : High
(4) Vcego (CN68 [7]) : High
(5) Vsago (CN68 [8]) : High
If any control signal does not rise, PSU cannot output the voltage.
・PoWER_1/2 : not rise ----- Main-Digital PWB trouble
・Vcego/Vsago : not rise ----- PDP Panel Module (Logic PWB) trouble
However, Vcego rises when PNLRST (EC01 [43] at Main-Digital board) is High, and
Vsago rises when PNLoN (EC01 [42] at Main-Digital board) is also High.
TABLE OF CONTENTS
TROUBLESHOOTING FLOW CHARTS
Yes
Video Power Save Mode
(Input:1～3, Front)
Fan Alarm
Yes
- FAN connector disconnected, FAN trouble
or Regulator circuit (IP03 on Terminal PWB) trouble
Yes
PDP Module Alarm
- Refer to the page "PDP Panel self-diagnosis function".
Yes
Does Power Supply Unit
output +5.6V?
Check Power Supply Unit. (＊ and Fuse
or AC-Inlet / Connector
Yes
Does Power Supply Unit
output Va/Vs?
Check Power Supply Unit. (＊
PSU outputs STBY+5V.
PSU outputs +5.6V.
PSU outputs +10V and +12V.
PSU outputs Vcc+5.1V for PDP Panel.
PSU outputs Va and Vs for PDP Panel.
Yes
Check Main-Digital board.
No
Yes
Does PDP Burn-In mode
No
55
DW3U
Yes
operates normally?
No
Check PDP module.
Check Main-Digital board
or Terminal PWB
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