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...Terminal circuit Troubleshooting diagram continued.
Follow next procedure:
(1) Select 'Maintenance' of Adjustment mode menu.
(2) Press SELECT. (while '<Display>' at "Front End" lights yellow.)
(3) Check the indication of 'Frame/MPEG Lock' line.
Check UT01 (Tuner)
No sound, abnormal sound
Are waveforms at
terminals of speaker
OK?
No
Cable/Air, Input 1/2/3/Front
Are waveforms at
pin 1(L) and pin 4(R) of Q002
OK?
No
Input 1/2/3/Front
Are waveforms at
pin 91/89/87/85(L) and
pin 92/90/88/86(R) of I001
OK?
No
Check Input terminal
TROUBLE-SHOOTING FLOW CHARTS
A
Yes
Is the indication
[LOCK] ?
No
Yes
Check Speaker
Yes
Check Main-Digital board
Yes
Check I001
Check Main-Digital board
HDMI
Check UT01 (Tuner)
39
Cable/Air
Are waveforms at
Yes
pin 83(L) and
pin 84(R) of I001
OK?
No
Yes
Are waveforms at
pin 9(SDA), 10(SCL) and
voltage at pin 2, 7, 18(+5V)
of UT01 OK?
No
Check IT06, IT07
or Main-Digital board
DW3G
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