Panasonic SA-HT535E, Service Manual

Page: 46 / 103

18 Adjustment Procedure
18.1. Required Tools and Equipment
18.1.1. Usage Equipment
Application Name Number
Tilt adjustment DVD test disc DVDT-S20 [SPG]
TORX screw driver (T6) Available on sales route. (T6) or
RFKZ0185 [SPG]
Others Hanari VFK1784
Grease RFKXPG641 [SPG]
Drysurf RFKXGUD24 [SPG]
Confirmation CD test disc PVCD-K06 and any other
commercially available disc
Recovery disc RFKZD03R005 [SPG]
18.1.2. Important points in adjustment
18.1.2.1. Important points in Optical Adjustment
· Before starting optical system adjustment, be sure to take anti-static measures.
· Optical adjustment (optical pickup tilt adjustment) is required after following parts are replaced:
1. Optical pickup unit.
2. Spindle motor assembly unit.
3. Optical pickup peripherals
Note:
Optical adjustment is not necessary after replacement of other parts inside the traverse unit. However, may require when picture
deterioration is detected. Optical adjustments cannot be applied to the inside of optical pickup. When a traverse unit is replaced,
the adjustment is not necessary.
18.1.3. Storing and Handling Test Discs
Surface precision is vital for DVD test discs. Be sure to store and handle them carefully.
· Do not place discs directly onto the workbench, etc, after use.
· Handle the 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 conditioned.
· 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.
· If adjustment is done using a warped disc, the adjustment will be incorrect and some discs will not be playable.
46
SA-HT535E / SA-HT535EG