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DVD P.W.BOARD
OPERATION
(GENERAL
FLOW)
a
Turn on power.
2
Two-layer
DVD
I
------1 ------
lJ
I
,-
.—
a
Depress open/close
switch.
*
/
+
\
u
Place a disk
on tray,
&
=---
e------
——---
. .
Laser on.
Lowers
lens
*
----
4-------Y
'""-%"
'"-"
"LASER"
Iighta.
Lowers
lens
(approx.
400 ins).
I Aliqns tracking
balancel
3
OK
rror judgemen
NG
EQB
OK
Error judgemen
N
+
I
Pickup returns.
I
e
FOCUS
OK?
NO
YES
+
I Waits foraDmox.500ms.l
o
8/12 cm
identification.
FG confirmation
*
—
Q
Rotates
at a speed
of
approx, 0.7 time
that of CD
Aligns tracking balance
-
Rotates
at a speed of twice that of CD.
*
OK
Error judgeme
NG
TIME
OUTERR.
L
+
.-—— .....----
I
o
Lowers
lens with
each lCin
DVD mode
0"""'--""
——
CD
"---
ne-layer
or
two-la
er
Y
Two- ayer
)ne-layer
omplete
—~
Two-layer
completed
54
TRACKING
ON
SLED
OFF
200ms
wait
ADDRESS
CHECK
+
Measures
poor playability
varlue
4
r
5s
FE pulse 1 or 2
Lowers
lens with in
LCD and DVD mode
%
Focus
balance alignment
Focus gain alignment
Tracking
gain alignment
SLED
ON
RF gain alignment
Pickup
moves
outward.
STOP
Rotates
at
as
eedofhvo
times
v
tha
of CD
L
-8-
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Table of Contents
Troubleshooting
