Sony MHC-V42D, Руководство по обслуживанию

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26
MHC-V42D
Optical Block Diagnosis Flow (2/2)
Do
es
la
se
r d
iod
e
be
co
m
e
lum
ino
us
?
(V
isu
al
ch
ec
k)
Is
ou
tp
ut
le
ve
l o
f R
F
sig
na
l (
JL
31
7)
u
p
to
st
an
da
rd
?
RF
L
ev
el
=
1.
05
±
0.
45
V
pp
Te
st
dis
c (
CD
: Y
ED
S-
18, DVD:
HLX-503 (NTSC)
or HLX-504 (PAL))
Is
th
er
e
no
p
ro
ble
m
w
ith
L
on
g
te
rm
A
gin
g
Te
st
(6
0m
in)
?
Co
nf
irm
s t
ha
t t
he
re
is
n
o
so
un
d
sk
ip.
EN
D
No No
Ch
ec
ks
JL
30
6
(L
D7
80
) s
ign
al.
Do
es
it
o
ut
pu
t 2
V
wh
en
la
se
r b
ec
om
e
lum
ino
us
?
Th
e
Op
tic
al
pic
ku
p
ha
s a
p
ro
ble
m
.
Re
pla
ce
s B
U.
DI
SC
IN
No
A
Is
ou
tp
ut
le
ve
l o
f R
F
sig
na
l J
L3
17
u
p
to
st
an
da
rd
?
RF
L
ev
el
=
1.
05
±
0.
45
V
pp
Te
st
dis
c (
CD
: Y
ED
S-
18, DVD: HLX-503 (NTSC)
or HLX-504 (PAL))
Re
pla
ce
s B
U
if
it
is
no
t u
p
to
st
an
da
rd
.
No
No
Ye
s
Ye
s
Ye
s
Ye
s
Ye
s
Ye
s
Ye
s
Ch
ec
ks
ci
rc
um
fe
re
nc
e
cir
cu
it
of
Q
40
2.
Ch
ec
ks
ci
rc
um
fe
re
nc
e
cir
cu
it
of
IC
30
1
LD
O1
.
If
it
is
no
t u
p
to
st
an
da
rd
,
Le
ns
cl
ea
nin
g
is
pe
rfo
rm
ed
.
Th
e
Op
tic
al
pic
ku
p
ha
s a
p
ro
ble
m
.
Re
pla
ce
s B
U.
SYS SET
2019/03/05 00:47:46 (GMT+09:00)