-
31
-
B. Remove and dis-assemble U7 with a 16Mbit SDRAM.
C
.
If the above actions are not working, replace the Main Board.
T31
Audio /left channel (AOL) no sound or abnormal sound
Main Board
A.
Remove the cover. Check
U15
on the
Main
board to see if there is any cold
soldering, hollow soldering, or damage. Rule out the problem.
B.
Check all parts following AOL to see if there is any cold or hollow soldering,
short circuit, broken circuit, parts missing, wrong parts and rule out the
problem.
C.
If the above actions are not working, replace the Main Board.
T32
Audio /right channel (AOR) no sound or abnormal sound
Main Board
A.
Remove the cover. Check
U15 on the Main board
to see if there is any cold
soldering, hollow soldering, or damage. Rule out the problem.
B.
Check all parts following AOR to see if there is any cold or hollow soldering,
short circuit, broken circuit, parts missing, wrong parts and rule out the
problem.
C.
If the above actions are not working, replace the Main Board.
T33
MP3 abnormal sound
Main Board
A.
Remove the top cover, check all flat cables 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 or cold soldering.
C
.
If the above actions are not working, replace the main board. If it is still not
working, replace the loader.
T34
Audio no waveform (sound) or waveform (sound) abnormal
Main Board
A.
Remove the cover. Check
U15
on the main board to see if there is
any cold
or hollow soldering and rule out the problem.
B.
Check all parts following AOL and AOR to see if there is any cold or hollow
soldering, short circuit, broken circuit, parts missing, or wrong parts. Rule out
the problem.
C.
If the above actions are not working, replace the Main Board.
T41
Earphone Audio no waveform (sound) or waveform (sound) abnormal
Main Board
A.
Remove the top cover, check all flat cables in the system to see if they are
correctly plugged to the fixed positions, or re-plug them.
Summary of Contents for DPC-7900 Series
Page 1: ...Portable DVD NOV 2006 DPC 7900 Series OSDPC79001...
Page 17: ...14 4 3 Exploded View 4 3 1 DVD Door Mainbody_top module...
Page 18: ...15 4 3 Exploded View 4 3 2 Keyboard Mainbody_top module...
Page 19: ...16 4 3 Exploded View 4 3 3 Mecha Mainbody_bottom module...
Page 20: ...17 4 3 Exploded View 4 3 4 Mainbody module...
Page 21: ...18 4 3 Exploded View 4 3 5 Display module Mainbody module...
Page 22: ...19 5 Regulatory Standards 5 1 Safety UL FDA 5 2 EMI CE FCC 5 3 Ergonomics Dolby LVD...
