LC-32/40/46LE600E/RU/S
5 – 4
<Backlight BLOCK: LC-40/46LE600E/RU/S>
The backlight does not light
Is either of fluorescence LEDs off?
YES
Check each fluorescent LED, and change defective parts.
(RUNTKA595WJ01, RUNTKA596WJ01, RUNTKA598WJ01
,etc.)
NO
Are all fluorescent LEDs on?
NO
Check each fluorescent LED, and change defective parts.
(RUNTKA595WJ01, RUNTKA596WJ01, RUNTKA598WJ01
,etc.)
YES
Is 3.3V supplied to pins(1) of CN7603(Driver_sub_PCB) when
the power switch is turned off?
NO
Check if the peripheral circuits are short-circuited or parts are
faulty.(U7801, U7802, etc
⋅
⋅
⋅
)
YES
YES
Refer to "No power supply (Front LED does not light up)" and
"No power-up even if turned on (Front LED light up)"
Is UR13V supplied from pins(1) of connector
CN7604(Driver_sub_PCB) when the power switch is turned on?
NO
Check if the peripheral circuits are short-circuited or parts are
faulty.
(T7102, D7507, C7514,7515,7516, PC7105, PC7106,
IC7505etc
⋅
⋅
⋅
)
YES
YES
Refer to "No power supply (Front LED does not light up)" and
"No power-up even if turned on (Front LED light up)"
Is the STB_ON/OFF signal supplied from pin(8) of CN7605 (LB)?
NO
Check the STB signal line on the MAIN_UNIT side (pin(2) of
P9602(LB), pin(D23) of IC3303(VCT_P), etc...)
and the peripheral circuits.
YES
Is each control signal of CN7605 (LB) normally function?
Pin(7) OFL (PWM light control signal input)
Pin(6) ERR (Error output)
NO
Check each control circuit.
YES
Is [LAMP_ERROR] indicated with [5] in a process mode?
NO
[LAMP_ERROR] is returned to the default value in a process
mode.
YES
Is BL_ON output to pin(2) of CN7603(Driver_sub_PCB) when
the power switch is turned on?
NO
Check the peripheral circuits (IC7054, etc
⋅
⋅
⋅
)
YES
<40LE600E/RU/S>
Is VLED(187V) supplied to pins(1-5) of CN7606(LA1) and pins(1-
5) of CN7007(LA2) when the power switch is turned on?
NO
<40LE600E/RU/S>
Check if the peripheral circuits are short-circuited or parts are
faulty.
T7102, D7516, D7517, C7528, L7501, D7525etc
⋅
⋅
⋅
<46LE600E/RU/S>
Is VLED(209V) supplied to pins(1-5) of CN7606(LA1), pins(1-5)
of CN7007(LA2), pins(1-3) of CN7608(LA3) when the power
switch is turned on?
NO
<46LE600E/RU/S>
Check if the peripheral circuits are short-circuited or parts are
faulty.
T7103, D7516, D7517, D7518, C7528, C7538, L7501, C7525,
C7526 etc
⋅
⋅
⋅
YES
YES
Refer to "No power supply (Front LED does not light up)" and
"No power-up even if turned on (Front LED light up)"
Check if the peripheral circuits are short-circuited or parts are
faulty.
IC7508, IC7601-7607, Q7601-7613, etc
⋅
⋅
⋅
Summary of Contents for Aquos LC-32LE600E
Page 50: ...LC 32 40 46LE600E RU S 6 4 2 2 IC1302 VHiMT8292N 1Y 2 2 1 Block Diagram ...
Page 62: ...LC 32 40 46LE600E RU S 6 16 2 12 IC8401 RH iXC721WJQZQ 2 12 1 Block Diagram ...
Page 75: ...LC 32 40 46LE600E RU S 7 2 2 OVERALL WIRING DIAGRAM LC 40LE600E RU S ...
Page 76: ...LC 32 40 46LE600E RU S 7 3 3 OVERALL WIRING DIAGRAM LC 46LE600E RU S ...
Page 77: ...LC 32 40 46LE600E RU S 7 4 4 SYSTEM BLOCK DIAGRAM LC 32LE600E RU S ...
Page 78: ...LC 32 40 46LE600E RU S 7 5 5 SYSTEM BLOCK DIAGRAM LC 40LE600E RU S ...
Page 79: ...LC 32 40 46LE600E RU S 7 6 6 SYSTEM BLOCK DIAGRAM LC 46LE600E RU S ...
Page 95: ...LC 32 40 46LE600E RU S 9 12 ...