Panasonic SA-AK250PL Service Manual

Also see for SA-AK250: Operating instructions Operating instructions

Contents

Panasonic SA-AK250PL Service Manual Manual pdf 7 page image

3 Handling Precautions For Traverse UnitThe laser diode in the traverse unit (with optical pickup) may break down due to potential difference caused by the static electricityof clothes or our human body.So, be careful of electrostatic breakdown during repair of the traverse unit (with optical pickup).· Way of handling the traverse unit (with optical pickup)1. Do not subject the traverse unit (with optical pickup) to static electricity as it is extremely sensitive to electrical shock.2. To prevent the breakdown of the laser diode, an antistatic shorting pin is inserted into the flexible board (FFC board).3. Do not to apply excessive stress to the flexible board (FFC board). When removing or connecting the short pin, finish the jobin as short time as possible.4. Do not turn the variable resistor for laser power adjustment. (It is pre-adjusted during production time)Grounding for electrostatic breakdown prevention1. Human body groundingUse the anti-static wrist strap to discharge the static electricity from your body.2. Work table groundingPut a conductive material (sheet) or steel sheet on the area where the traverse unit (with optical pickup) is place, and groundthe sheet.Caution :The static electricity of your clothes will not be grounded through the wrist strap. So, take care not to let your clothes touch thetraverse unit (with optical pickup).Caution when replacing the Traverse UnitThe traverse unit has a short point shorted with solder to protect the laser diode against electrostatics breakdown. Be sure toremove the solder from the short point before making connections.7SA-AK250PL