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6.
REPLACING OPTICAL PICK-UP
6-1.
Handling
1) A red laser diode for DVD requires more attention to static
electricity than general infrared laser diodes for CD.
Because its durability to static electricity is far weaker than
that of infrared laser diodes, always use an earth band when
handling the optical pick-up block as service parts.
Because its durability to static electricity is far weaker than
that of infrared laser diodes, always use an earth band when
handling the optical pick-up block as service parts.
2) As for the flexible board KHS-180A (RP) packed as service
parts, the short lands have been soldered to protect from static
electricity. Accordingly, remove solders when replacing opti-
cal pick-up. (See Fig. 6)
electricity. Accordingly, remove solders when replacing opti-
cal pick-up. (See Fig. 6)
Fig. 6 Flexible board
3) In handling the KHS-180A (RP), do not touch inhibited parts
shown in Fig. 7, but grip the slide base bearing and U-shaped
guide.
guide.
Fig. 7 KHS-180A (RP)
Touch inhibited parts
• Objective lens
• Skew sensor
• Laser holder
• Laser coupler
• Flexible board
• OEIC
• Lens actuator covers
• Objective lens
• Skew sensor
• Laser holder
• Laser coupler
• Flexible board
• OEIC
• Lens actuator covers
DVD short land
CD short land
Slide base bearing
Skew sensor
Lens actuator
covers
covers
Objective lenses
U-shaped guide
OEIC
Laser holder
Flexible board
Connector
Laser coupler
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