13 Measurements and Adjustments13.1. Service Tools and EquipmentApplication Name NumberTilt adjustment DVD test disc DVDT-S20 [SPG]TORX screw driver (T6) Available on sales route. (T6) orRFKZ0185 [SPG]Others Grease RFKXPG641 [SPG]Confirmation CD test disc PVCD-K06 or any other commerciallyavailable discVCD test disc PVCD-K06 or any other commerciallyavailable discRecovery disc RFKZD03R005 [SPG]13.2. Important points in adjustment13.2.1. Important points in optical adjustment•••• Before starting optical adjustment, be sure to take anti-static measures.•••• Optical pickup tilt adjustment is needed after replacement of the following components.1. Optical pickup unit2. Spindle motor unit3. Optical pickup peripheral partsNotesAdjustment is generally unnecessary after replacing other parts of the traverse unit. However, make adjustment if there is anoticeable degradation in picture quality. Optical adjustments cannot be made inside the optical pickup. Adjustment is generallyunnecessary after replacing the traverse unit.13.2.2. Important points in electrical adjustment•••• Follow the adjustment procedures described in this manual.13.3. Storing and handling of 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. Storediscs 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, usea 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.71SA-PT750PL
