POWER DOES NOT TURN ON
Is the voltage at pin 8 and
pin 9 of CP502 about
3.3V and at pin 5 of
CP502 about 5V?
Yes
Is there waveform at
X4001 about 3.0Vp-p ?
Yes
Write DVD FIRMWARE DATA.
TROUBLESHOOTING GUIDE
No
No
D-1
Check AT+3.3V line of POWER BLOCK.
Check Q515 and peripheral circuit.
Check X4001, IC4001 and
peripheral circuit.