LG LPA-172G, Service Manual

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3-13
H. OPEN/CLOSE ABNORMAL
F. PICTURE ABNORMAL G. DISC ERROR
PICTURE ABNORMAL
Check the disc.
Check MPEG_CLK
Signal of MPEG part
Refer to Servo part
YES
YES
YES
YES
Check MPEG (IC 2U1)
If OK
YES(If OK)
YES(If OK)
YES(If OK)
YES(If OK)
YES(If OK)
YES
Replace B/D
DISC ERROR
Check Disc
Replace B/D
Refer to Servo part
YES
YES
YES
OPEN/CLOSE
ABNORMAL
Check 2SW1 switch
Refer to SERVO part.
Check IC(2U1) Pin 158
NO
Check the connectin of
MD.
YES
YES
Refer to SERVO part.
YES