– 4 –
NOTES ON HANDLING THE OPTICAL PICK-UP
BLOCK OR BASE UNIT
The laser diode in the optical pick-up block may suffer electrostatic
breakdown because of the potential difference generated by the
charged electrostatic load, etc. on clothing and the human body.
During repair, pay attenation to electrostaic breakdown and also use
the procedure in the printed matter which is included in the repair
parts.
The flexible board is easily damaged and should be handled with
care.
NOTE ON LASER DIODE EMISSION CHECK
The laser beam on this model is concentrated so as to be focused on
the disc reflective surface by the objective lens in the optical pick-
up block. Therefore, when checking the laser diode emission, ob-
serve more than 30 cm away from the objective lens.
LASER DIODE AND FOCUS SEARCH
OPERATION CHECK
1. Maker POWER switch on with no disc inserted and disc table
closed.
2. Confirm that the following operation is performed while ob-
serving the objective lens.
Notes for repairing CD MECHANISM section electric flow.
Two jigs (J-2501-091-A and J-2501-092-A) are necessary for the
CD MECHANISM section electric flow.
Connect SET and JIG as shown in the figure below and turn the
power switch on.
Disc table getting out procedure on the power supply is
OFF
Confirm that laser beam is spread.
Up and down motion of the objective lens. (3 times)
Jig
(J-2501-092-A)
CN101
(19 pin)
Jig
(J-2501-081-A)
CNU102
(19 pin)
Disc Table
2
1
CN291
(5pin)
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