Troubleshooting Guide - Toshiba SD-3860SCA Service Manual

POWER DOES NOT TURN ON
Is the voltage at pin 11 of
CD502 about 3.3V and at
pin 10 of CD502 about 5V?
Yes
Is there waveform at
X4001 about 3.0Vp-p ?
Yes
Write DVD ROM DATA.

TROUBLESHOOTING GUIDE

No
No
D-1
Check AT+3.3V line of POWER BLOCK.
Check Q503 and peripheral circuit.
Check X4001, IC4001 and
peripheral circuit.