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replace the main board.
T13
Disc drive scratches disc
Main Board
A.
Check the resistors or capacitors of J601 or U601 on the main board, or those
adjacent to IC 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 of J601 or U601 on the main board, or those
adjacent to IC 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 30-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 of J601 or U601 on the main board, or those
adjacent to IC 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 18-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 of J801 or U802 on the main board, or those
adjacent to IC 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
no video / abnormal
Main Board
A.
Remove the top cover, check all flat cables in the system to see if they are
