Kenwood DDX-512 - DVD Player With LCD monitor, Руководство по обслуживанию, Страница: 24 / 86

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DDX5022/5022Y/5032/5032M/512/52RY
DNX5120/512EX/5220/5220BT
ADJUSTMENT
List of Adjustment and Check Items for
DVS-802xV and 812xV
1. Adjustments after replacement of pickup
The mechanism shall be adjusted to reduce variations
among parts, which are inherent to the machine.
No. Item Overview Disc
1 Offset Cancel Adjust
Stray light offset in
the optical module
-
2 Inner Limit Adjust
Support recording
of minimum limit for
DVD+R/RW
(To decide the focus
on position.)
-
3 Focus Height Adjust
To decide focus on
drive such that the
pickup lens shall not
hit on the disc.
TCD-782
TCDR-704
2. Contents to be checked
No. Item Overview Overview
1 Check CD playback
TCD-782 (TNo.1, 23)
Dropout of sound TCD-782
(Any CD-DA)
2 Check DVD playback
Any irregularities of
images or dropout of
sound
Any DVD-Video
3. Adjustment procedure
No
No
No
No
No
Yes
Yes
Yes
Yes
Yes
Start of adjustment
:
Is the offset cancel completed
successfully?
@
Is the adjustment of inner limit
completed successfully?
Adjustment of focus height
Insert TCD-782 or TCDR-704.
.
Is the adjustment of focus height
completed successfully?
;
CD (TCD-782)
Playback, OK?
Change Disc
CD-DA
→
DVD-Video
=
DVD-Video (Any)
Playback, OK?
End Error
Test Mode
Normal Mode
“Test Mode”
Adjustments
q through e shall be made in DVS-8000 Adjust
of the Test mode.
[Service] → [DVS-8000] → [DVS-8000 Adjust]
q Offset Cancel
Condition: Run the cancel operation only when there is no
disc in the unit.
Criteria: The “OK” shall be shown.
w Inner Limit SW Adjustment
Condition: Make the adjustment regardless of the disc is
inserted in the unit or not.
Criteria: The “OK” shall be shown.
e Adjustment of Focus Height
Condition: Make the adjustment when the disc (CD) is in-
serted in the unit
Criteria: The “OK” shall be shown.
“Normal Mode”
Run checks
r and t in the Normal mode that is transferred
by Power OFF → ON.
r Check that CD can be played back.
Criteria: CD shall be played back normally.
t Check that DVD can be played back.
Criteria: DVD shall be played back normally.
4. Contents of Failure
No. Contents of Failure Major cause
1
Failure in adjustment of
focus height
• CD and/or LD does not turn on
(Short in soldering)
• Connector (Pick, Spindle)
• Failure in spindle
2
Failure in inner limit
adjustment
• Connector (Spindle)
• Abnormal sled
• Inner limit SW does not turn on.
3 Operation Check • Disc scratch, Dirt, Pick