Daewoo DPC-7900 Series, Руководство по обслуживанию

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28
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replace the main board.
T13 Disc drive scratches disc
Main Board
A.
Check the resistors or capacitors adjacent to IC
(U17)
to see if there is any hollow
soldering,
cold soldering, wrong part,
or misplaced soldering.
B. If the above actions are not working, replace the loader. If it is still not working,
replace the main board.
DVD ROM
A.
Check the loader to see if it is the cause of disc scratching. If so, replace the
loader.
T14 Not every disc can be played
Main Board
A.
Check the resistors or capacitors adjacent to IC(U17) to see if there is any hollow
soldering, cold soldering, wrong part, or misplaced soldering.
B. If the above actions are not working, replace the loader. If it is still not working,
replace the main board.
T15 Head does not work
Main Board
A. Remove the top cover, check the
28
-pin flat cable
and the 2-pin cable
in the
system to see if they are correctly plugged to the fixed positions, or re-plug them.
B.
Check the resistors or capacitors adjacent to IC(U17) to see if there is any hollow
soldering, cold soldering, wrong part, or misplaced soldering.
C. If the above actions are not working, replace the loader. If it is still not working,
replace the main board.
T16 Spindle does not work.
Main Board
A. Remove the top cover, check the
4
-pin flat cable in the system to see if they
are correctly plugged to the fixed positions, or re-plug them.
B.
Check the resistors or capacitors adjacent to IC(U17) to see if there is any hollow
soldering, cold soldering, wrong part, or misplaced soldering.
C. If the above actions are not working, replace the loader. If it is still not working,
replace the main board.
T21 N o video / abnormal
Main Board
A.
Remove the top cover, check all flat cables in the system to see if they are