Troubleshooting For Lcd-Controller And Micom-Board - Sharp LC26GD7E Service Manual

Troubleshooting for LCD-Controller and MICOM-Board

Check P2304 (RM) #4pin
Is the Backlight off?
NO
To "The backlight does not go on."
Is there the clock output at pin (26) of IC4601?
Does the adjustment process menu appear?
Check IC4701, IC4901 and their peripheral circuits.
No picture comes out.
H
YES
YES
YES
26
L
Check P2304 (RM) #8pin
H and L
Check the power unit.
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
Blinking seven times?
Check the temperature of the 1-bit amplifier
unit.
NO
Check the FFC (LV, SC4601) connections.
NO
Check IC4501 and its peripheral circuits.
L and H only
YES
YES
YES
YES
YES