JVC XV-C5SL, Service Manual

Page: 23 / 74

(No.XA001)1-23
3.10 Troubleshooting
3.10.1 Servo volume
Fig.1
FE
OFF
ON
TE
OFF
ON
FE
LO LI
OK !
Y
Y
A
N
N
N
N
Y
Y
N
N
Y
N
Y
Y
A
Y
Y
Y
N
N
N
Two layers of DVD only.
Is the inter-layer jump OK?
(8) Inter-layer
jump error
Has the disc information
been collected?
Stop will result
(7) Address read
error
Is playback
possible?
Press OPEN
/CLOSE key
Confirmation of tray drive circuit
and circuit in surrounding
See "(2) Disk detection, distinction error"
in "Check points for individual errors"
Is tray
operation
correct?
Is the traverse moving
along the innermost
perimeter for SW detection?
"NO DISC" message appears
immediately after vertical
movement of the pick-up lens
The state that DISC does not rotate continues for
several seconds, and becomes NO DISC or an
error display afterwards.
The rotation of DISC becomes high-speed and
abnormal, and becomes NO DISC or an error
display afterwards.
Is focus retraction OK?
Even when it retracts
correctly, if it is out of focus
and makes repeated retries
with a clicking sound, it is
in error.
Is tracking retraction OK?
If TE waveform reappears
or fails to converge after the
TE retraction, it is in error.
Is the spindle servo
locked correctly?
Is the RF OUT waveform
locked correctly?
See "(6) Spindle CLV error"
in "Check points for
individual errors"
See "(5) Tracking ON error"
in "Check points for
individual errors"
See "(4) Focus ON error"
in "Check points for
individual errors"
See "(1) Spindle startup error"
in "Check points for individual errors"
See "(3) Traverse movement error"
in "Check points for individual errors"
Check (9),(10),(11), and
(12) items in "Check points
for individual errors"