Panasonic SA-HT833VP Service Manual

Also see for SB-PC730: Service manual

12 Adjustment Procedure (DVD Section)12.1. Required Tools and EquipmentPurpose of Use Tools/Equipment Model/Product NumberTilt adjustment DVD test disc DVDT-S20TORX screw driver (T6) Available on sales route. (T6) or RFKZ0185Others Hanarl VFK1784Grease RFKXPG641Drysurf RFKXGUD24Checking CD test disc PVCD-K06 and any commercially available discVCD test disc PVCD-K06 and any commercially available discRecovery disc RFKZD03R00512.2. Necessity of Adjustment12.2.1. Necessity of Optical Adjustment· Before starting optical system adjustment, be sure to wear proper protection gear against static electricity.· Optical adjustment (optical pickup tilt adjustment) is required after following parts are replaced:1. Optical pickup2. Spindle motor assembly3. Optical pickup peripherals such as a rail, etc.Note:Optical adjustment is not necessary after replacement of other parts inside traverse, however, may require when picturedeterioration is detected. Optical adjustment cannot be applied to the inside of optical pickup. When a traverse unit is replaced,the adjustment is not necessary.12.2.2. Necessity of Electrical Adjustment· Follow the procedure for adjustment.12.3. Storing and Handling Test Discs· Surface precision is vital for DVD test discs. Be sure to store and handle them carefully.1. Do not leave the discs uncovered on the work desk or other places after use.2. Handle the discs carefully to prevent scratches. Put each disc in its case and place it in the standing position. Store the discsin a cool place and avoid direct sunlight or air conditioner.3. Accurate adjustment cannot be expected with a disc warped against a flat surface. Obtain a new test disc for optical adjustment.4. If a warped disc is used, adjustment would result incorrectly, and other discs could not be used.12.4. Optical Adjustment (Optical Pickup Tilt Adjustment)Measurement point Adjustment point Mode DiscTangential adjustment screwTilt adjustment screwT1 (inner track) playT30 (central periphery) playT43 (outer track) playDVDT-S20Measuring equipment Adjustment valueNone (LCD display of the player is used.) Adjust that jitter value becomes minimum.12.4.1. Optical Adjustment (Optical Pickup Tilt Adjustment)1. While the player is stopped and no disc is inserted, select the DVD function. Press and hold down the button on the playerand 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.26SA-HT833VP