Adjustment Procedure - Kenwood DDX5032 Service Manual

DDX5022/5022Y/5032/5032M/512/52RY
DNX5120/512EX/5220/5220BT
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
1 Offset Cancel Adjust
2 Inner Limit Adjust
3 Focus Height Adjust
2. Contents to be checked
No. Item
1 Check CD playback
2 Check DVD playback

3. Adjustment procedure

Is the offset cancel completed
Is the adjustment of inner limit
completed successfully?
Test Mode
Adjustment of focus height
Insert TCD-782 or TCDR-704.
Is the adjustment of focus height
completed successfully?
Normal Mode
24
ADJUSTMENT
Overview Disc
Stray light offset in
the optical module
Support recording
of minimum limit for
DVD+R/RW
(To decide the focus
on position.)
To decide focus on
TCD-782
drive such that the
pickup lens shall not
TCDR-704
hit on the disc.
Overview Overview
TCD-782 (TNo.1, 23) TCD-782
Dropout of sound (Any CD-DA)
Any irregularities of
images or dropout of Any DVD-Video
sound
Start of adjustment
No
successfully?
Yes
No
Yes
No
Yes
No
CD (TCD-782)
Playback, OK?
Yes
Change Disc
CD-DA → DVD-Video
No
DVD-Video (Any)
Playback, OK?
Yes
End Error
"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
Failure in adjustment of
1
focus height
Failure in inner limit
2
adjustment
3 Operation Check
Major cause
• CD and/or LD does not turn on
(Short in soldering)
• Connector (Pick, Spindle)
• Failure in spindle
• Connector (Spindle)
• Abnormal sled
• Inner limit SW does not turn on.
• Disc scratch, Dirt, Pick