8-4
FL11.4ATR
[Video Signal Section]
No
Is the "L" pulse sent out Pin(1) terminal of remote
control receiver (RS4051) when the infrared remote
control is activated?
Yes
Is the "L" pulse supplied to Pin(2) of CN4052?
Yes
Is approxi3.3V voltage supplied to Pin(3)
terminal of the remote control receiver (RS4051)?
No
FLOW CHART NO.2
Operation is possible from the unit.
Check AL+3.3V line and service it if defective.
No
Replace the IR Sensor CBA Unit
or the remote control unit.
Replace the IR Sensor CBA Unit.
Yes
Replace Digital Main CBA Unit.
When pressing each switches (SW4001~SW4007)
do the voltage of Pin(2) of CN4001 decrease?
The key operation is not functioning.
FLOW CHART NO.1
Yes
Replace Digital Main CBA Unit.
Replace the Function CBA Unit.
No
No operation is possible from the remote control unit.
Picture does not appear normally.
FLOW CHART NO.3
Is approxi24V voltage supplied to Pin(13, 14)
of CN632?
Is approxi24V voltage supplied to Pin(16, 17) of
CN632?
CL3005, Digital Main CBA Unit or LCD Module
Assembly may be defective.
Check and replace these parts.
No
No
Yes
Is approxi5.7V voltage supplied to Pin(11) of
CN632?
See FLOW CHART NO.9 <AL+5V is not output.
[Power Supply Section]>
See FLOW CHART NO.5 <P-ON+24V is not output.
[Power Supply Section]>
See FLOW CHART NO.8 <AMP+24V is not output.
[Power Supply Section]>
No
Yes
Yes
