3-13
OPEN/CLOSE abnormal
Check SW401, SW402 switch
Refer to SERVO part.
YES
YES
Check IC(U201) Pin 130
Check the connectin of MD.
YES
Refer to SERVO part.
YES
NO
MAIN ELECTRICAL TROUBLESHOOTING GUIDE
Picture abnormal
Check the disc.
YES
YES
Refer to SERVO part
YES
Check MPEG_CLK
Signal of MPEG part
YES
Check MPEG (IC U201)
YES
Replace B/D
F. PICTURE ABNORMAL
H. OPEN/CLOSE ABNORMAL
Disc error
Check Disc
YES
YES
Refer to SERVO part
YES
YES(If OK)
YES(If OK)
YES(If OK)
(If OK)
Replace B/D
G. DISC ERROR
Summary of Contents for DP270B
Page 15: ...3 6 MEMO ...
Page 17: ...3 9 3 10 PRINTED CIRCUIT DIAGRAM TOP VIEW BOTTOM VIEW MEMO ...
Page 34: ...3 27 2 WIRING CONNECTION DIAGRAM 2 MAIN PCB KEY PCB MAIN PCB Key PCB ...
Page 51: ...3 55 3 56 1 MAIN P C BOARD TOP VIEW PRINTED CIRCUIT DIAGRAMS ...
