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8.2 Cautions to Be Used Before Replacing the Optical Pickup Unit and Spindle Motor Assembly

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Before replacing the optical pickup unit and spindle motor assembly, check the total using hours for each of them. The checking method is as follow:

| Operating state & Key operation | Display
Using hours of CD laser | Press “STOP” and “^” on the remote control in this order while the unit is stopped. | _xxxx_yyyy yyyy:Total hours are displayed by 4-digit figures (unit: 10 hours).
Using hours of DVD laser | Press “STOP” and “^” on the remote control in this order while the unit is stopped. | _xxxx_yyyy xxxx:Total hours are displayed by 4-digit figures (unit: 10 hours).
Using hours of SP motor | Press “STOP” and “>” on the remote control in this order while the unit is stopped. | T2_xxxx xxxx:Total hours are displayed by 4-digit figures (unit: 10 hours).
Resetting using hours of CD and DVD lasers (Simultaneous resetting) | Press “STOP” and “V” on the remote control in this order while the unit is stopped. | _0000_0000
Resetting using hours of the motor | Press “STOP” and “<” on the remote control in this order while the unit is stopped. | T2_0000

Cautions to be taken when replacing the optical pickup

The optical pickup may break down due to the static electricity of human body. Take proper protection measures against static electricity before repairing the parts around the optical pickup. (See the page describing the PREVENTING OF STATIC ELECTRICITYDISCHARGE.)

1. Do not touch the areas around the laser diode and actuator.

2. Do not judge the laser diode with a tester. (The tester will be damaged easily.)

3. It is recommended to use a destaticized soldering iron for short-circuiting or removing the laser diode. (Recommended soldering iron) HAKKO ESD Product

4. Solder the land of the flexible cable in the optical pickup.

   Note:

   - When using a soldering iron which is not destaticized, short-circuit the terminal face of the flexible case with a clip. After that, short-circuit the land.

   - After the repairing work is completed, remove the solder according to the correct procedure shown in this Technical Guide.

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