CFD-6 - Sony Audio Service Manual (repair manual). Page 3

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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 attention to electrostatic 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.

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.

On repairing CD section, playing a disc without the CD lid, use
Chuck Plate Jig.
Code number of Chuck Plate Jig : X-4918-255-1

                      

1. Press CD open knob.
2. Open the lid for CD.
3. Push on LEAF SWITCH (S801) as following figure.
4. Confirm the laser diode emission while observing the objecting

lens. When there is no emission, Auto Power Control circuit or
Optical Pick-up is broken.
Objective lens moves up and down once for the focus search.

Laser diode

Insert a precision 
screwdriver and push
LEAF SWITCH (S801)