Panasonic SA-HT535EE Service Manual

static measures.- Optical adjustment (optical pickup tilt adjustment) is required afterfollowing parts are replaced:1. Optical pickup unit.2. Spindle motor assembly unit.3. Optical pickup peripheralsNote: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 beapplied to the inside of optical pickup. When a traverse unit is replaced, the adjustment is notnecessary.18.1.3. Storing and Handling Test DiscsSurface 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. Placethem into their case after use and store them vertically. Storediscs in a cool place where they are not exposed to direct sunlightor air from air conditioned.- Accurate adjustment will not be possible if the disc is warpedwhen placed on a surface made of glass, etc. If this happens, usea new test disc to make optical adjustments.- If adjustment is done using a warped disc, the adjustment will beincorrect and some discs will not be playable.18.1.4. Optical Adjustment (Optical Pickup Tilt Adjustment)Measurement point Adjustment point Mode DiscTangential adjustmentscrew / Tilt adjustmentscrewT1 (inner track) replay /T43 (outer track) replayDVDT-S20 [SPG]Measuring equipment Adjustment valueNone (LCD display of the player is used.) Adjust that jitter value becomes minimum.18.1.4.1. Adjustment Procedure1. While the player is stopped and no disc is inserted, select theDVD 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.57PDF created with pdfFactory Pro trial version www.pdffactory.com