Daewoo DPC-7900 Series, Serivce Manual

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T33 MP3 abnormal sound
T34 Audio no waveform (sound) or waveform (sound) abnormal
Earphone Test
T41
Earphone no sound or the sound has pause, abnormal sound, noise, echo
T42 Earphone (right) no sound or the sound has pause, abnormal sound, noise
T43 Earphone (left) no sound or the sound has pause, abnormal sound, noise
Function Key Test
T51
Video can’t be still or stop
T52 Can’t execute fast forward or rewind
T53 Panel button
System Setting Test
T61
Can’t enter the system setting
T62 The system can not be played or it is down after the system is set
TFT Test
T71
TFT image and color error
T72 TFT image is black and white
T73 TFT image shakes and is distorted
T74 TFT PAL color strip
6.2 Debug & Trouble Shooting
CB for any missing components and bad soldering
T01 No Power
Main Board
A.
Check for components on the Main Board
to see if there are any short circuits.
B. Check for the power adapter to see if the
12V
power is abnormal.
C. Check for components C6,C7,CE100,C3 on the Main Board to see if there are
any short circuits.
D. Check for component CN1 on the Main Board to see if the switch have function.
E
.
If none of the above actions is effective, please change Main Board.
T02 Power LED indicator not on or insufficient brightness
Main Board
A.
Open the cover of the portable DVD-player to inspect if LED functions
normally.
T75 TFT ripple