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XL-MXG9BK
Flow of Functional Operation. Until TOC is Read
Does REST switch
: L
turn on?
Check
Points
é
.
.
4
a
+
The voltage of pin S of P802
must be OV.
m Time Chart of focusing
FCS fall to
'
OV when
detect the
0
]
q734®
2
Focus drive
1c801
PIN &
Focus error
:
Pe
eee
de a
+5V
Fze
icga2@) 0
. Check if the. pin53-of IC841 on
the main PC board. +5¥ to be
- fed to the spindle motor. -
FRF
"ob
1cen2@ 9
'Disc starts to rotate.
@ When the lens moves up and down in a 2-
seconds interval, FZC is not output.
© When
the lens moves
up-and down
in less
than i-second,
FRF is not
output
or the
focus servo loop is abnormal.
Fig-1
When
the eye pattern -is not
output,
check
the "RF
amp.
When
the
eye
pattern
is not
clear, adjust the PLL free- running
frequency.
oo
| Tracking error waveform at TOC reading
to rotate
+."
finishes
@ When the tracking loop does not turn ON, |
check the tracking offset and align it to 0.
oe
:
Check if pin37 of C991 | on the
front PC board is OV..
oo Fige2
(No, 20436)1-13
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