11
5.13.3. List of the Extention Cables
6 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.
6.1.
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.
6.1.1.
Worktable grounding
1. Put a conductive material (sheet) or iron sheet on the area where the optical pickup is placed, and ground the sheet.
6.1.2.
Human body grounding
1. Use the anti-static wrist strap to discharge the static electricity form your body.
6.1.3.
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.
6.2.
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.
Summary of Contents for DVD-1600
Page 10: ...10 5 12 3 List of the Extention Cables...
Page 21: ...21 8 8 Self diagnosis Function and Service Modes...
Page 23: ...23...
Page 24: ...24 8 10 Servo Process Flow...
Page 25: ...25 8 11 Servo Process Display Mode 8 12 ADSC Internal Ram Data Display...
Page 33: ...33 4 Cut the antistatic flexible sheet for the optical pickup unit Fig 6...
Page 60: ...60 15 2 POWER SECTION MOTHER P C B 1 5 SCHEMATIC DIAGRAM...
Page 61: ...61...
Page 62: ...62 15 3 VIDEO OUT SECTION MOTHER P C B 2 5 SCHEMATIC DIAGRAM...
Page 63: ...63...
Page 64: ...64 15 4 AUDIO OUT 1 SECTION MOTHER P C B 3 5 SCHEMATIC DIAGRAM...
Page 65: ...65...
Page 66: ...66 15 5 AUDIO OUT 2 SECTION MOTHER P C B 4 5 SCHEMATIC DIAGRAM...
Page 67: ...67...
Page 68: ...68 15 6 OPERATION SECTION MOTHER P C B 5 5 SCHEMATIC DIAGRAM...
Page 69: ...69...
Page 70: ...70 15 7 FEP SECTION MODULE P C B 1 8 SCHEMATIC DIAGRAM...
Page 71: ...71...
Page 72: ...72 15 8 SODC SECTION MODULE P C B 2 8 SCHEMATIC DIAGRAM...
Page 73: ...73...
Page 74: ...74 15 9 AV DECORDER SECTION MODULE P C B 3 8 SCHEMATIC DIAGRAM...
Page 75: ...75...
Page 76: ...76 15 10 VIDEO D A SECTION MODULE P C B 4 8 SCHEMATIC DIAGRAM...
Page 77: ...77...
Page 78: ...78 15 11 AUDIO D A CONVERTER SECTION MODULE P C B 5 8 SCHEMATIC...
Page 79: ...79 15 12 PROGRESSIVE SECTION MODULE P C B 6 8 SCHEMATIC DIAGRAM...
Page 80: ...80...
Page 81: ...81 15 13 WM SECTION MODULE P C B 7 8 SCHEMATIC DIAGRAM...
Page 82: ...82 15 14 CPU SECTION MODULE P C B 8 8 SCHEMATIC DIAGRAM...
Page 83: ...83...
Page 84: ...84 15 15 TERMINAL SCHEMATIC DIAGRAM...
Page 85: ...85 15 16 FRONT 1 FRONT 2 AND FRONT 3 SCHEMATIC DIAGRAM...
Page 86: ...86...
Page 97: ...97 17 EXPLODED VIEWS 17 1 Casing Parts Mechanism Section Exploded View...
Page 98: ...98 17 2 Mechanism Section Exploded View...
Page 99: ...99 17 3 Packing Accessories Section Exploded View...
