Sharp LC-32GA3E Service Manual page 46

LC-32GA3E
LC-37GA3E
TROUBLE SHOOTING TABLE
Is the power LED lit up in green?
Is the Backlight off?
To "The backlight does not go on."
Is there the clock output at pin (40) of IC4602?
Does the adjustment process menu appear?
Check IC4701, IC4901 and their peripheral circuits.
No sound or picture comes out.
YES
YES
Table of power LED blinking timing at error occurrence
Power supply error
Blinking once: Slow
Lamp error
Blinking once: Fast
Panel power supply error
Blinking twice
In-set temperature error
Blinking five times
Fan error
Blinking six times
No picture comes out.
YES
YES
46
(Continued)
NO
Is the power LED blinking in red?
YES
Is the AC cord normal?
Blinking once? (At regular intervals)
NO
Check the power unit.
CCKM and D5V line are not defective.
Blinking once?
NO
To "The backlight does not go on."
Blinking twice?
NO
Check the panel power supply circuit.
Blinking five times?
NO
Check the temperature of the set.
Blinking six times?
NO
Check the fan motor and its peripheral circuits.
Blinking seven times?
Check the temperature of the 1-bit amplifier
unit.
NO
To "No picture comes out."
250ms
Type of error Power LED operation (1 cycle)
H: ON
L: OFF
H: ON
L: OFF
H: ON
L: OFF
H: ON
L: OFF
H: ON
L: OFF
NO
Check the FFC (LV, SC3200, SC4601) connections between the
main PWB and LCD control PWB.
NO
Check IC4501 and its peripheral circuits.
NO
YES
YES
YES
YES
YES
YES
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