Hitachi PDV-1021S Service Manual page 19

SYMPTOM: THE DVD DRIVE DOES NOT WORK
start
Pick-up lens light up OK
DVD drive does not work
Replace DVD
The operation of the DVD player stops at initializing display.
drive or main
board
Loading?displayed
Nothing on display
yes
SYMPTOM: NO IMAGE OR SOUND COMES OUT FROM THE EXTERNAL OUTPUT
Press the DISC cover switch at the center
of the DVD player and turn on the power.
Then check whether or not the optical pick-
up lens of the DVD drive lights. CAUTION:
Visible laser radiation when open and
interlock defeated. Do not stare into Laser
beam.
yes
Chec the
optical pick-up
lens?
Pick-up lens does not light up at all
Check the
connectors of
the DVD drive
and main
board?
Not OK
Secure the
connection of the
DVD drive and
main board
Insert a DVD disc
and turn on the
power
What is the
reaction of the
DVD drive?
Is there any
message
shown on
display
Does the
image output
stop during the
operation?
start
Check
operation of
the DVD drive. no
Does the DVD
drive work?
yes
Replace the main
board or the
connector
Pick up lens light up dim
OK
The DVD drive works but the initializing operation of the optical pick-up lens
does not start (the optical pick-up lens operates twice), or abnormal noise
sound
Chec the DVD
disc for
CHECK DISK?displayed
fingerprints, dirt.
DVD disc OK
no
replace DVD drive
19
Replace DVD
drive
No defect, return
set to customer
Is the DVD
DVD disc dirty
disc OK?