17
DV-2022
5
6
7
8
5
6
7
8
A
B
C
D
E
F
5. DIAGNOSIS
5.1 TROUBLESHOOTING
POWER DOES NOT TURN ON
Is there waveform at
X4001 about 3.0V p-p?
Write DVD FIRMWARE DATA.
Check X4001, IC4001 and peripheral circuit.
No
Yes
Yes
No
Is the voltage at pins 5
and 6 of CD502 about
3.3V and at pins 7 and 8
of CD502 about 6V?
Check AT+3.3V line of POWER BLOCK
Check IC503,T501 and peripheral circuit.
DECK DOES NOT ACCEPT
OPEN/CLOSE
No
Is the lose connection
at CP2302 to DECK ?
Yes
Yes
No
Change DVD LOADER.
Check P.CON 6V line of POWER BLOCK.
Check CP2302 connection to DECK .
Is the voltage at pin 8 and
19 of IC2301 about DC6V ?
