DMTech DML-4120S, Руководство по обслуживанию

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5-3
5-2-1 No Picture (TV,VIDEO, S-VHS) DML-4120S
DML-4120SD 5-2-2 No Picture (TV, VIDEO, DVD, S-VIDEO)
5-3-1 No Sound (DML-4120S)
Check pin
2(TV),159,157(S-
VHS),1(VIDEO1),160(VIDE
02) of Q501
No
Check Tuner,VCR
Cable.
Yes
Check Q501 and related
circuit of Q501.
Check pin
2(TV),15P,157(S-VIDEO)
1(SW-CVBS), 160(AV2-CVBS)
P11, 16(R,G,B) of Q501
No
Check Tuner,VCR
Cable.
Yes
Check Q501 and related
circuit of Q501.
Check Pin
73,78(TV),Pin14,15(Video
2),Pin9,10(Video1) of
QS02
No Check Tuner,VCR
Cable.
Yes
Check Pin 39,40 of QS02.
No
Check QS02 and
related circuit of QS02.
Yes
Does proper DC 15V
appere at Pin 6,15 of
Q606?
No
Check L601,L602.
Yes
Check Pin 2,5,16,19 of
Q606.
No
Check Q606 and
related circuit of Q606.
Yes