Panasonic SA-HT530GCP Service Manual page 45

19.1.4. Optical Adjustment (Optical Pickup Tilt Adjustment)
Measurement point
Measuring equipment
None (LCD display of the player is used.)
19.1.4.1. Adjustment Procedure
1. While the player is stopped and no disc is inserted, select
the DVD function. Press and hold down the
player and the number button, "5" on the remote controller
unit.
2. Check that "J_xxx_yyy_zz" is appearing on the display.
For your information:
The values, "yyy" and "zz" are not associated to jitter
value.
"yyy" indicates the frequency of error occurrence.
"zz" indicates the focus drive value.
Note:
Jitter value appears on the display.
3. Replay T01 (inner track) of the test disc.
4. Adjust till the jitter value becomes minimum, using a
tangential adjustment screw. <Fig. 19-1>
5. Replay T43 (outer track) of the test disc.
6. Adjust till the jitter value becomes minimum, using a tilt
adjustment screw 1. <Fig. 19-1>
7. Replay T43 (outer track ) of the test disc.
8. Adjust till the jitter value becomes minimum, using a tilt
adjustment screw 2.<Fig. 19-1>
9. Adjust till the jitter value becomes, using the tilt adjustment
screws 1 and 2 alternatively.
Fig. 19-1
19.1.4.2. Tips
1. Apply the tangential adjustment first and then the tilt
adjustment.
2. Repeat the adjustment a couple of times to find the
optimum point.
3. Complete with the tilt adjustment.
Adjustment point
Tangential adjustment screw
Tilt adjustment screw
button on the
Mode
T1 (inner track) replay
T43 (outer track) replay
Adjustment value
Adjust that jitter value becomes minimum.
19.1.4.3. Check After Adjustment
Replay test discs or other commercial discs in order to confirm
that no picture deterioration or sound skipping is detected in the
inner, middle, and outer tracks. After this, fasten each
adjustment screw securely using a screw lock.
19.1.4.4. Procedure for Screw Lock
1. After adjustment, remove the top cover, clamper base, disc
tray and then traverse unit.
2. Place the traverse unit upside down, and fasten the
adjustment screws with a screw lock. <Fig. 19-2>
3. After fastening the screws, assemble in order of the
traverse unit, disc tray, clamper base, and then top cover.
45
Disc
DVDT-S20 [SPG]
Fig. 19-2
SA-HT530GCP