Adjustment Procedures; Service Tools And Equipment; Important Points In Adjustment; Storing And Handling Test Discs - Panasonic DVD-LS80P Service Manual

DVD-LS80P / DVD-LS80PC / DVD-LS82P / DVD-LS82PC / DVD-LS850P

11 ADJUSTMENT PROCEDURES

<Caution>
Be sure to take static electricity countermeasures before adjusting the optical system. Adjust the optical systems according to
the prescribed procedure.

11.1. Service Tools and Equipment

Application
Tilt adjustment
Inspection
Others
Confirmation

11.2. Important points in adjustment

11.2.1. Important points in optical adjustment
· · · · Optical pickup tilt adjustment is needed after replacement of the following components.
1. Optical pickup unit
2. Disc motor
3. Traverse motor
4. Optical pickup peripheral parts (such as rail)
Notes
Adjustment is generally unnecessary after replacing other parts of the traverse unit. However, make adjustment if there is
a noticeable degradation in picture quality.
Optical adjustments cannot be made inside the optical pickup.
11.2.2. Important points in electrical adjustment
· · · · Follow the adjustment procedures described in this Manual.

11.3. Storing and Handling Test Discs

· · · · Surface precision is vital for DVD test discs. Be sure to store and handle them carefully.
1. Do not place discs directly onto the workbench, etc., after use.
2. Handle discs carefully in order to maintain their flatness. Place them into their case after use and store them vertically. Store discs
in a cool place where they are not exposed to direct sunlight or air from air conditioners.
3. Accurate adjustment will not be possible if the disc is warped when placed on a surface made of glass, etc. If this happens, use a
new test disc to make optical adjustments.
4. If adjustment is done using a warped disc, the adjustment will be incorrect and some discs will not be playable.

11.4. Optical adjustment

11.4.1. Optical pick gate adjustment
Measurement point
-----
Measuring apparatus
None (Use the service indication on the main unit)
Name
DVD test disc
Extension cable
(Traverse ass'y to main P.C.B.)
Extension cable
(Traverse ass'y to main P.C.B.)
Tilt adj. jig
Screw lock
Grease
Lubricating oil
CD test disc
VCD test disc
Recovery disc
Adjustment point
Tangential adjustment screw
(Adjustment screw A)
Radial tilt adjustment screw
(Adjustment screw B)
DVDT-S15AS or DVDT-S01
RFKZ0104 (30Pin)
RFKZ0303 (18Pin)
RFKZ0118
RZZ0L01
JGS0101
RFKXGUD24
PVCD-K06
or any other commercially available disc
PVCD-K06
or any other commercially available disc
RFKZD03R005
Mode
Tracking servo "ON"
Tracking servo "ON"
Adjustment value
Adjust the jitter value to the minimum level.
26
Number
Disc
DVDT-S01/S15AS