28
BDP-LX55
1
2
3
4
A
B
C
D
E
F
1
2
3
4
3
-1.
S
tart Up
3
-2. Jitter Mea
s
ure / BLER Mea
s
ure
[ Content of test ]
Implements initi
a
l movement of the disc servo contin
u
o
u
sly.
Implement the following process 20,000 cycles.
.
Tr
a
y Close
.
Fo
u
c
u
s ON
.
TOC Re
a
d
.
Tr
a
y Open
(1 cycle 15 seconds x 20000=completed in
a
pprox.
83
ho
u
rs 20 min
u
tes)
C
a
n be implemented on
a
ll of CD, DVD,
a
nd BD. C
a
nnot ch
a
nge disc d
u
ring process.
[ Instr
u
ctions ]
1
Select "[7] Enter SP Mode" with the
key from the Service Mode screen,
a
nd press the [ENTER] key.
2
The SP Mode window men
u
will be displ
a
yed, so select "St
a
rt Up"
a
nd press the [ENTER] key.
3
The tr
a
y will
au
tom
a
tic
a
lly open
a
nd the dedic
a
ted screen will
a
ppe
a
r. Pl
a
ce the disc yo
u
wish to
u
se
on the tr
a
y,
a
nd p
u
sh it in m
a
n
ua
lly. ([Close] key will not f
u
nction)
4
St
a
rt Up mode will be initi
a
ted,
a
nd co
u
nt will st
a
rt. Implement 20,000 times (4E20 in hex),
a
nd if no errors occ
u
r, "P
a
ss" will
a
ppe
a
r.
If errors do occ
u
r, they will be co
u
nted. Therefore, errors c
a
n be identified witho
u
t finishing the process.
[ Effective indic
a
tions ]
.
Tr
a
y sometimes does not open, discs sometimes
a
re not recognized, discs sometime do not pl
a
yb
a
ck,
(When indic
a
tions
a
re rel
a
ted to discs, implment on the type of disc which h
a
s been pointed o
u
t.
If it is the disc on which the indic
a
tions occ
u
rred, possibility of reocc
u
rrence is higher.)
[ Content of test ]
Me
a
s
u
res the Jitter or the Block Error R
a
te (BLER) of the disc inserted.
Only P
a
ss or NG will be displ
a
yed, not Me
a
s
u
rement v
a
l
u
es.
All of CD, DVD,
a
nd BD c
a
n be j
u
dged.
[ Instr
u
ctions ]
1
Select "[7] Enter SP Mode" with the
key from the Service Mode screen,
a
nd press the [ENTER] key.
2
The SP Mode window men
u
will be displ
a
yed, so select either "Jitter Me
a
s
u
re"
"BLER Me
a
s
u
re,"
a
nd press the [ENTER] key.
3
The tr
a
y will
au
tom
a
tic
a
lly open
a
nd the dedic
a
ted screen will
a
ppe
a
r. Pl
a
ce the disc yo
u
wish to
u
se
on the tr
a
y,
a
nd p
u
sh it in m
a
n
ua
lly. ([Close] key will not f
u
nction)
4
The tr
a
y will reopen
au
tom
a
tic
a
lly. Me
a
s
u
rement will st
a
rt when yo
u
p
u
sh the tr
a
y in m
a
n
ua
lly.
5
When test is completed, "P
a
ss" or "NG" is displ
a
yed.
[ Effective indic
a
tions ]
Defect rel
a
ted to pl
a
yb
a
ck (blocked noise, so
u
nd j
u
mping, im
a
ge j
u
mping, disc is p
au
sed, freeze of screen etc.)
However, even if P
a
ss is displ
a
yed
a
fter this test, it is diffic
u
lt to determine th
a
t the Driver is norm
a
l
with these P
a
ss j
u
dgments only.
If
a
n NG is gener
a
ted in
a
specific disc only, the defect is likely to be c
au
sed by the disc. If
a
n NG is
gener
a
ted in other discs too, the defect is likely to be c
au
sed by the drive p
a
rt.
