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9 Main Board
A. Open the cover of the portable DVD-player to inspect if LED（D12）functions
normally.
B. Measure pin 199 on U1 to see if the voltage is high.
C. Measure R175 to see if the voltage is high and the negative end of D12 must be
low voltage.
D. Disassemble F/W, replace with a good one or re-plug it to see if the LED lights
up when Power ON.
E. If the above actions are not working, replace the Main Board.
z T03
、
Loading time too long
9 Main Board
A. Remove the cover to see if the resistors or resistor-array adjacent to U1 and U8,
to see if there is any cold soldering, hollow soldering, misplaced soldering, or
wrong part.
B. If the above actions are not working, replace the Main Board.
z T04
、
Remote control bad sensing or sensing not functional
9 Remote control
A. If the main body of the system works normally, then making sure that the
battery of the Remote control has sufficient power, if it is not, replace the
battery.
9 Main Board
A. Remove the top cover and the panel. Check to see if U15 has short circuit,
broken circuit, hollow soldering, or other problems.
B. If the above actions are not working, replace the Main Board.
z T05
、
Stay in the Run In condition after power on, can’t be tested
9 Main Board
A. Remove the top cover and replace with another U6 F/W.
B. If the above actions are not working, replace the Main Board.
z T06
、
System down at power on
9 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. Disassemble U6 F/W, replace with a good one or re-plug it to see if the
symptom will disappear.
C. If the above actions are not working, replace the Main Board.
z T07
、
System down during play
9 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.
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