Panasonic DVD-K29GCS specifications Prevention of Static Electricity Discharge

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DVD-K29GCS

5 PREVENTION OF STATIC ELECTRICITY DISCHARGE

The laser diode in the traverse unit (optical pickup) may brake down due to static electricity of clothes or human body. Use due caution to electrostatic breakdown when servicing and handling the laser diode.

5.1.Grounding for electrostatic breakdown prevention

Some devices such as the DVD player use the optical pickup (laser diode) and the optical pickup will be damaged by static electricity in the working environment. Proceed servicing works under the working environment where grounding works is completed.

5.1.1.Worktable grounding

1. Put a conductive material (sheet) or iron sheet on the area where the optical pickup is placed, and ground the sheet.

5.1.2.Human body grounding

1. Use the anti-static wrist strap to discharge the static electricity form your body.

5.1.3.Handling of optical pickup

1.To keep the good quality of the optical pickup maintenance parts during transportation and before installation, the both ends of the laser diode are short-circuited. After replacing the parts with new ones, remove the short circuit according to the correct procedure. (See this Technical Guide.)

2.Do not use a tester to check the laser diode for the optical pickup. Failure to do so will damage the laser diode due to the power supply in the tester.

5.2.Handling Precautions for Traverse Unit (Optical Pickup)

1.Do not give a considerable shock to the traverse unit (optical pickup) as it has an extremely high-precise structure.

2.When replacing the optical pickup, install the flexible cable and cut its short land with a nipper. See the optical pickup replacement procedure in this Technical Guide. Before replacing the traverse unit, remove the short pin for preventing static electricity and install a new unit. Connect the connector as short times as possible.

3.The flexible cable may be cut off if an excessive force is applied to it. Use caution when handling the cable.

4.The half-fixed resistor for laser power adjustment cannot be adjusted. Do not turn the resistor.

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Contents Specifications DVD-K29GCSContents Interconnection Schematic Diagram & Schematic Safety Precautions General GuidelinesPrecaution of Laser Diode About lead free solder PbF Handling Precautions for Traverse Unit Optical Pickup Prevention of Static Electricity DischargeGrounding for electrostatic breakdown prevention Disassembly Procedure Casing Parts and P.C.B. Positions Disassembling the Casing and Checking P.C.B.STop Panel Mic P.C.B. and Operation P.C.BFront Panel Mother P.C.B. and Power SW P.C.B Module P.C.B Rear PanelMechanism Unit Service Position Disassembly Procedure Assembling and Disassembling the Mechanism UnitTraverse Unit Tray Assembling the tray unitLoading section Loading motor P.C.B Optical Pickup Unit Procedure for Disassembling the Optical Pickup Unit Traverse Motor Assembling the optical pickup unitDVD-K29GCS Self-Diagnosis Function and Service Modes Optical Pickup Breakdown DiagnosisService Mode Table DVD Self Diagnostic Function-Error CodeLast Error Code saved during no Play DETService mode table DVD-K29GCS Sales demonstration lock function Handling After Completing RepairsRecovery after the dvd player is repaired Firmware version-up of the DVD playerImportant points in adjustment Adjustment ProceduresService Tools and Equipment Storing and Handling Test DiscsOptical adjustment Optical pickup tilt adjustmentProcedure for screw lock Abbreviations Serial Data Input Voltage Chart Mother P.C.BModule P.C.B MIC P.C.B DVD-K29GCS Block Diagram Overall Block DiagramPower Supply Block Diagram Primary Circuit Secondary CircuitServo Block Diagram Optical Pick UP UnitVideo Block Diagram Optical PICK-UP UnitVideo Main Signal Audio Block Diagram Audio Main SignalInterconnection Schematic Diagram & Schematic Diagram Notes Interconnection Schematic DiagramSchematic Diagram Notes Important safety noticeSchematic Diagram Power Supply Section Mother P.C.B /2 Schematic DiagramFront & AV OUT Section Mother P.C.B /2 Schematic Diagram Q6085 P16 P15 P14 P13 P12 P11 P10 B1ABGC000011IC4301 C0ABBB000118 Mother P.C.B.2/2 Module Schematic Diagram XP0621400LRFKVDS39BKIT Module MIC Schematic Diagram Audio Main SignalPrint Circuit Board Mother P.C.BMother P.C.B. & Module P.C.B. Address Information Mother P.C.BModule P.C.B /2 Component Side Module P.C.B /2 Foil Side Operation P.C.B. & MIC P.C.B Operation P.C.BDVD-K29GCS Exploded Views Casing Parts & Mechanism Section Exploded ViewMechanism Section Exploded View Packing & Accessories Section Exploded View Replacement Parts List ECA2WHG100ECQV1H684JL ECJ3YB1A106K ERJ2GEJ101 ERJ3GEYJ272
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