ZS-X7 - Sony Audio Service Manual (repair manual). Page 3

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The laser diode in the optical pick-up block may suffer electro-
static 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 emis-
sion, observe more than 30 cm away from the  objective lens.

1. Open the lid for CD.
2. Push ON OPEN/CLOSE switch (S702) as following figure.
3. Press CD u button.
4. Confirm the laser diode emission while observing the object-

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

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

Push ON switch

OPEN/CLOSE switch
(S702)