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damage the laser diode.
Recommended driver: VESSEL 9000 1.8-30 / (Ceramic driver)
Caution on optical pickup:
- The optical pickup and the magnetic head are structured precisely;
therefore, they are very fragile. Be careful not to touch them with
the edge of laser power meter.
- The sensor of the laser power meter is a very fine part. Be careful
not to touch it to the optical pickup lens.
- The focus point of the laser reaches to 180°C. Therefore, avoid
using laser power for a long time because the sensor of the laser
power meter may be burned.
- Do not allow the write power to even momentarily reach or exceed
5.5 mW. Doing so will result in damage to the optical pickup.
- Do not set the unit to the laser power adjustment mode with the
MD loaded. Doing so may result in damage to the MD.
18.1.3. Adjustment Procedure
1. Remove the MD unit from the system unit.
2. Short-circuit the IC10-pin 67 (TP77) and GND (TP74) with the lead
wire. (This enables the unit to enter the operation mode and to
active the operation switches on the front panel.)
3. Set the MD unit in the system unit and turn on the power. The LED
of REC and PLAY will light up.
4. Slide the sensor cover of the laser power meter. / Refer to
1.
5. Position the sensor of the laser power meter directly above the
optical pickup. Refer to
Fig. 18-1.
Fig. 18-2.
Fig. 18-2.
35
Fig. 18-
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