8-7
A91H1TR
Check SP801,SP802 and their periphery circuit,
and service it if defective.
Are the audio(L/R) signals inputted to Pin(1, 44)
of IC801?
Yes
Yes
No
Are the audio(L/R) signals outputted to CN801 and
CN802?
Check IC801 and their periphery circuit, and
service it if defective.
No
Yes
Yes
Yes
Yes
Check the line between Pin(8, 10) of CN202 and
Pin(1, 44) of IC801, and service it if defective.
Replace Digital Main CBA Unit or LCD Module
Assembly.
Yes
(Output to speakers)
Yes
(Output to audio
output terminal)
FLOW CHART NO.2
Picture does not appear normally. (Tuner input)
Are the audio(L/R) signals outputted to Pin(8, 10) of
CN202?
No
No
No
Replace Digital Main CBA Unit or LCD Module
Assembly.
Are the audio(L/R) signals outputted to Pin(4, 6) of
CN202?
No
Are the audio(L/R) signals inputted to Pin(3, 5)
of IC803?
Check the line between Pin(4, 6) of CN202 and
Pin(3, 5) of IC803, and service it if defective.
No
Are the audio(L/R) signals outputted to Pin(1, 7)
of IC803?
Check the line between Pin(1, 7) of IC803 and audio
output terminal(JK722, JK723) and service it if defective.
Replace IC803
Check the line between Pin(3, 4) of CN201 and
Pin(12, 13) of TU101, and service it if defective.
Are the DIF signal inputted to Pin(3, 4) of CN201?
Summary of Contents for 42MF439B/F7
Page 14: ...4 2 A91H1DC 2 Rear Cabinet S 1 1 Stand Assembly S 2 S 3 S 2 S 2 S 2 S 4 S 5 Fig D1 ...
Page 40: ...10 4 A91H1SCJP2 Jack Power 2 3 Schematic Diagram ...
Page 41: ...10 5 A91H1SCJP3 Jack Power 3 3 Schematic Diagram ...
Page 45: ...10 9 A91H1SCIR IR Sensor Junction Schematic Diagram ...
