Read Sharp LC-26GD7E (serv.man2) Service Manual online
26
Troubleshooting for LCD-Controller and MICOM-Board
H
YES
L
H and L
L and H only
NO
NO
YES
YES
NO
YES
YES
NO
NO
NO
YES
No picture comes out.
Check P2304 (RM) #4pin
Check P2304 (RM) #8pin
Check the power unit.
Blinking once? (At regular intervals)
Blinking once?
Blinking twice?
Blinking five times?
Blinking six times?
Is the Backlight off?
To "The backlight does not go on."
Is there the clock output at pin (26) of IC4601?
Does the adjustment process menu appear?
Check IC4501 and its peripheral circuits.
Check IC4701, IC4901 and their peripheral circuits.
Check the FFC (LV, SC4601) connections.
To "The backlight does not go on."
Check the panel power supply circuit.
Check the temperature of the set.
NO
YES
Blinking seven times?
Check the temperature of the 1-bit amplifier
unit.
unit.
Check the power unit.
CCKM and D5V line are not defective.
CCKM and D5V line are not defective.
YES
NO
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