Panasonic DVD-LS93P, Service Manual

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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 Name Number
Tilt adjustment DVD test disc DVDT-S15 or DVDT-S01
Inspection Extension cable
(Traverse ass’y to main P.C.B.) RFKZ0104 (30Pin)
Extension cable
(Traverse ass’y to main P.C.B.) RFKZ0303 (18Pin)
Tilt adj. jig RFKZ0118
Others Screw lock RZZ0L01
Grease JGS0101
Lubricating oil RFKXGUD24
Confirmation CD test disc PVCD-K06
or any other commercially available disc
VCD test disc PVCD-K06
or any other commercially available disc
Recovery disc RFKZD03R004
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.
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DVD-LS90PP / DVD-LS93P