3-12
Audio out abnormal
Check Audio jack & mode
YES
YES
Check +9V
YES
Check signals from MPEG
YES
Replace IC(U504)
MAIN ELECTRICAL TROUBLESHOOTING GUIDE
Audio in/speaker
abnormal
Replace IC(U502)
Replace
Q501 and Q503
Check Audio jack &
mode S/W
NO
YES
YES
Is Q501
and Q503 OK.
Speakers
NO
YES
YES
Is speakers OK.
Replace
B. AUDIO OUT ABNORMAL
D. AUDIO IN/SPEAKER ABNORMAL
Video in abnormal
Refer to LCD part
Replace
(U501 IC)
Check Video jack
& mode
NO
YES
YES
Is U501 OK.
Check
R203, R202, C202
YES
YES
E. VIDEO IN ABNORMAL
Video out abnormal
Check Video jack & mode
YES
YES
Check Video signals from MPEG
YES
Check IC(U501)
YES
Check LC filter
C. VIDEO OUT ABNORMAL
Содержание DP270B
Страница 15: ...3 6 MEMO ...
Страница 17: ...3 9 3 10 PRINTED CIRCUIT DIAGRAM TOP VIEW BOTTOM VIEW MEMO ...
Страница 28: ...3 21 FIG 3 3 FIG 3 4 F U401 PIN8 F U401 PIN8 FE U201 PIN26 FE U201 PIN26 RFL U201 PIN21 RFL U201 PIN21 ...
Страница 33: ...3 26 WIRING CONNECTION DIAGRAMS 1 WIRING CONNECTION DIAGRAM 1 MAIN PCB LCD PCB MAIN PCB MAIN PCB ...
Страница 34: ...3 27 2 WIRING CONNECTION DIAGRAM 2 MAIN PCB KEY PCB MAIN PCB Key PCB ...
Страница 51: ...3 55 3 56 1 MAIN P C BOARD TOP VIEW PRINTED CIRCUIT DIAGRAMS ...
Страница 52: ...3 57 3 58 MAIN P C BOARD BOTTOM VIEW ...
Страница 53: ...3 59 3 60 2 KEY MENU P C BOARD TOP VIEW BOTTOM VIEW 3 KEY FRONT P C BOARD TOP VIEW BOTTOM VIEW ...