Denon DCD-1015 - Focus Error Signal Judgment

Mrmetidemmeeet
ete
«5
os
<
eppetnctaattntmeane
#9
=typntne
16
0%
eh
perectnnan
tan
APN
GUEIRRP
Een
ng
})-
6.
enrereen
mencine
tue
ss
giestem
tant
ate
tee
cate
<0
ten
eneeemeniebemmnre
se
eh
ee
ee
aa i
2.
Judgement
by
Changing
of
PU
due
to
Focus
Error
signal
(S-curve)
Vr&
(check
for
proper
S-surve)
|
aa
Load the adjustment disc
(CA-1094).
(service mode)
____S-curve wave. _.
-Press button.
Perform continuous
focus search.(Not 1)
Observe across test
terminal FE(C131 one
side pin).and test
terminal VC (TP102 Pin3)
with oscilloscope.
:| . Measure Focus Error
iH signal.(S-curve). Vre.. .
‘for 3 times, record
| ~VFEmax.— =
Is VFemax
more than 1.58V?
No
Is PU fens:
cleaned?
Clean the PU lens.
(Not:2) :
Yes.
- Disc is rotated Appox.
90°, measure VFE for
10 times and record
VFEmax,. woe ee
~ 1s VFEmax shown
ee
-
Yes
iene
Perform
checking
of
item
3.
Not
1:
Press
button
continuously
in
VFE
measure.
Not
2:
Clean
the
lens
with-moistened
cleaning
paper
without
applying
an
excessive
force
to
the
lens.
Trouble may exist in
focus error signal (S-curve)
abnormality. Execute PU
replacement.
topoeve