Troubleshooting - Daewoo DG-M12D1P-SA Service Manual

DG-M21D1D-HA HDMI_SVC 2006.10.13 11:15 AM

TROUBLESHOOTING

1. NO POWER
Check Power Cord
Check C806 +port
YES
Check if there's switching
pulse on Drain of IC802(#7)
YES
Check the Voltage of D821, D822,
D823,D824,D826,D827
YES
Check the Voltage of
Q821,Q822,Q823
Source port ,#2 of IC804
YES
Check the parts on MAIN
BOARD
˘ ` 29 mac001 1200DPI 80LPI
NO
Change Power Cord
NO
Check F801,L801,D801,D802,
D803,D804,R802
NO
Check IC802,D821,D822,D823,
D824,D826
NO
Change destroyed
Diode
NO
Check if the #6 of
P821 is over 4V in 'Power ON'mode
YES
Check Q821,Q822, Q823,IC804
29
NO
Check Micom MICOM
ON/OFF port