DVD-S796/DV-S5270
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PRECAUTION OF LASER DIODE
CAUTION:
This unit utilizes a class II laser. Visible laser radiation is emitted from the optical pickup lens when the
unit is truned on:
1.
Do not look directly into the pickup lens.
2.
Do not use optical instruments to look at the pickup lens.
3.
Do not adjust the preset variable resistor on the optical pickup.
4.
Do not disassemble the optical pickup unit.
5.
If the optical pickup is replaced, use the manufactures specified replacement pickup only.
6.
Use of control or adjustment or performance of procedures other than those specified herein may result in hazardous
radiation exposure.
HANDLING PRECAUTIONS FOR TRAVERSE DECK
The laser diode in the optical pickup may break down due to
potential difference caused by static electricity of clothes or
human body.
So be careful of electrostatic breakdown during repair of the
optical pickup.
Handling of optical pickup
1.
Do not subject the 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 (FPC Board).
When removing or connecting the short pin,
finish the job in as short times as possible.
3.
Be careful not to apply excessive stress to the
flexible board (FPC Board).
4.
Do not turn the variable resistor (Laser power adjustment).
It has already been adjusted.
Grounding for electrostatic breakdown prevention
1.
Human body grounding.
Use the antistatic wrist strap to discharge the static
electricity from your body.
2.
Work table grounding.
Put a conductive material (sheet) or steel on the area
where the optical pickup is placed and ground the 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 the optical pickup.
Wrist strap
(Anti-static bracelet)
1M
Iron plate or some metals
to conduct electricity
Solder
(Magnified view)
Use a clip or other item
to ground the unit.
Flexible Cable
Pickup unit
Summary of Contents for DV-S5270
Page 33: ...3 3 B G A R ONLY BLOCK DIAGRAM 1 OVERALL BLOCK DIAGRAM ...
Page 34: ...3 4 2 SERVO BLOCK DIAGRAM ...
Page 35: ...3 5 PB PR 3 VIDEO BLOCK DIAGRAM FOR U A R MODELS U A R MODELS ...
Page 36: ...3 6 4 VIDEO BLOCK DIAGRAM FOR G B MODELS G B MODELS ...
Page 37: ...3 7 5 AUDIO BLOCK DIAGRAM ...
Page 38: ...3 8 INTER CONNECTION DIAGRAM 1 U A R MODELS U A R MODELS ...
Page 39: ...2 G B MODELS 3 9 G B MODELS ...
Page 55: ...3 25 16 FRONT SWITCH AND POWER SWITCH SCHEMATIC DIAGRAM ...
Page 56: ...3 26 17 SCART SCHEMATIC DIAGRAM FOR G B MODELS G B MODELS ...
