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CHAPTER 5.
LC32LE600E
TROUBLESHOOTING TABLE
[1] TROUBLESHOOTING TABLE
<POWER BLOCK: LC-32LE600E/RU/S>
No power supply (Front LED does not light up) and no power-up even if turned on (Front LED light up).
Is the wire harness in the unit properly connected?
Are F7001 and F7002 normal?
Is BU+5V supplied from pin(11) of connector CN7003 (PD) when
the power switch is turned off?
Is the PS_ON signal sent to pin(10) of connector CN7003 (PD)
when the power switch is turned on
Is the AC_DET signal sent to pin(9) of connector CN7003 (PD)
when the power switch is turned on?
Is the DC voltage of approx. 400V supplied to both ends of
C7015?
Is UR13V supplied from pins(1-4) of connector CN7003 (PD)
when the power switch is turned on?
Is PNL12V supplied from pins(1-2) of connector CN7004 (PL)
when the power switch is turned on?
Is 144V supplied from pins(2,4,6) of CN7007(LA2) and
pins(2,4,6,8,10,12) of CN7006 (LA1) when the power switch is
turned on?
YES
YES
YES
YES
YES
YES
YES
YES
Service Manual
NO
Reconnect and recheck the wire harness.
NO
Are L7004, L7001,L7002,BD7001 etc. faulty?
Check if the peripheral circuits are short-circuited.
NO
Check the peripheral circuits,
IC7101, T101, C7401, C7403, PC7008, etc ⋅ ⋅ ⋅.
NO
Check pin(AC11) of IC3303(VCT_P) on MAIN PWB.
NO
Check the peripheral circuits,PC7007, Q7004, PC7002,etc.
NO
Does the PFC circuit normally work?
(Check IC7002, L7003, TH7001, IC7001, Q7005, Q7006etc. and
the peripheral circuits.)
NO
Check the peripheral circuits
(T7002, D7051, L7051, PC7001)
Check the peripheral circuits (U7053, etc ⋅ ⋅ ⋅)
NO
NO
Check the peripheral circuits,
T7501, D7501, C7501, FA5511,etc ⋅ ⋅ ⋅.
5 – 1
LC-32/40/46LE600E/RU/S
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