3-2
1. NO BOOTING
When you plug power cord and turn the unit on, LED won’t turn on, the unit won’t read disc normally.
1-1. Please check every output voltage.
1) Please check if output voltage 3.3 VA on MAIN board IC605 is normal.
If output voltage 3.3 VA is not normal, please check the working status of SMPS board.
2) Please check if output voltage 5 V on MAIN board of Q601 emitter is normal.
If output voltage 5 V of Q601 is not normal, please check 5 VA of CN602 pin3 the working status.
If output voltage 5 V is not normal, please check the working status of SMPS board.
3) Please check if output voltage 1.8 VA from MAIN board Q208 collector pin is normal.
If output voltage 1.8 V is not normal, please check the working status of MAIN board Q208.
ONE POINT REPAIR GUIDE
< MAIN board top view >
Q208
(1.8 V regulator)
Q601
(5 V regulator)
IC605
(3.3 V regulator)
jomi