9-4 A17FYTR
No
Is the "L" pulse sent out Pin(1) terminal of remote
control receiver (RS101) when the infrared remote
control is activated?
Check the line between Pin(1) terminal of remote
control receiver(RS101) and Pin(2) of CN3003,
and service it if defective.
Ye s
Is the "L" pulse supplied to Pin(2) of CN3003?
Ye s
Is 3.3V voltage supplied to Pin(2) terminal of the
remote control receiver (RS101)?
No
FLOW CHART NO.13
Check AL+3.3V line and service it if defective.
Are the audio signals outputted to CN3801 and
CN3802?
No
No
Replace the remote control receiver(RS101)
or the remote control unit.
Ye s
Ye s
Replace Digital Main CBA Unit.
When pressing each switches (SW101B, SW103B~
SW107B) do the voltage of Pin(4) of CN3003 decrease?
Ye s
The key operation is not functioning.
FLOW CHART NO.12
Are the contact point and installation state of the key
switches (SW101B, SW103B~SW107B) normal?
Re-install the switches (SW101B, SW103B~SW107B)
correctly or replace the poor switch.
Check the switches (SW101B, SW103B~SW107B)
and their periphery, and service it if defective.
Ye s
Replace Digital Main CBA Unit.
No
No
No operation is possible from the remote control unit.
Picture does not appear normally.
FLOW CHART NO.14
Digital Main CBA Unit, Smart Module CBA Unit or
LCD Module Assembly may be defective.
Check and replace these parts.
Digital Main CBA Unit or Smart Module CBA Unit
may be defective. Check and replace these parts.
Audio is not outputted normally.
FLOW CHART NO.15
SP801, SP802, CL3801 or CL3802 may be defective.
Check and replace these parts.
Operation is possible from the unit.
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