HCD-RG55, HCD-RG55S, MHC-RG55, MHC-RG55S - Sony Audio Service Manual (repair manual). Page 3

3

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 break-down 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,
observe from more than 30 cm away from the objective lens.

Laser component in this product is capable
of emitting radiation exceeding the limit for
Class 1.

– BACK PANEL –

PARTS No.

AR, E2, E51, SP models

4-238-649-01

AUS, KR, MX models

4-238-649-21

AEP, UK models

4-238-649-31

• Abbreviation

AUS : Australian model

AR : Argentina model

SP

: Singapore model

E2 : Central and South America model

KR

: Korea model

E51 : Chilean and Peruvian model

MX

: Mexican model

This set has a disc tray lock function to prevent discs for
demonstration at shops from theft. While this lock function is set,
the tray will not be delivered out even when the OPEN/CLOSE
button is pressed.

Press the OPEN/CLOSE button while pressing the STOP button.
After a few seconds, the message “LOCKED” will appear on the
fluorescent indicator tube with the tray locked.

Just as the lock is set, press the OPEN/CLOSE button while
pressing the STOP button.
After a few seconds, the message “UNLOCKED” will appear with
the lock released.