Disc Not Recognized - Hitachi DV-DS163E Service Manual

Details of Servicing and Troubleshooting > Troubleshooting
(3) SYSTEM Circuit
"Please wait" displayed
Continue at Power On
NO
R174 : Normal?
YES
NO
IC701 Pin19: Approx. 5.1V?
YES
Is Vcc (3.3V)
NO
supplied to
PVM02 Pin19,21?
YES
Is Vcc (1.25V)
NO
supplied to
PVM02 Pin28,30?
YES
NO
Is Vcc (2.5V)
supplied to PVM02 Pin6?
YES
NO
Is Vcc (1.8V)
supplied to PVM02 Pin10?
YES
NO
Is Vcc (5V)
supplied to PVM02 Pin23?
YES
Check MAIN P.C.B, and
replace if necessary.
Replace R174.
Check IC701, and
replace if necessary.
Check 3.3V
power supply.
Check 1.25V
power supply.
Check 2.5V
power supply.
Check 1.8V
power supply.
Check 5V
power supply.
3 - 12
(4) DVD Drive

Disc Not Recognized

NO
P1D01 Pin1 : Approx. 12V?
YES
NO
P1D01 Pin4 : Approx. 5V?
YES
NO
CABLE 5 (FFC) : Normal?
YES
Change to another disc,
and test again.
Check SMPS Circuit.
Check SMPS Circuit.
Plug in the
connector again.