Servicing Notes - Sony CMT-A70 Service Manual

CMT-A50/A70
Ver. 1.1
NOTES ON HANDLING THE OPTICAL PICK-UP
BLOCK OR BASE UNIT
The laser diode in the optical pick-up block may suffer electrostatic
break-down 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.
NOTES 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,
observe from more than 30 cm away from the objective lens.
HOW TO OPEN THE CD TRAY WHEN POWER SWITCH TURNS OFF.
2 Pull-out the CD tray.
4
SECTION 1

SERVICING NOTES

• MODEL IDENTIFICATION
– Left Speaker Back Panel –
Model
CMT-A50
CMT-A70
1 Using a flat-tip screwdriver of the diameter
less than 4 mm, rotate the gear in the arrow
direction.
Power requirements
indication
Power Requirements
Destination
AEP, UK, Italian,
East European
AC: 230V-50Hz 50W
and Russian models
Korean model AC: 220V-60Hz 50W
US and Canadian model AC: 120V 60Hz 100W
AEP, UK, Italian,
East European, Russian AC: 230V-50Hz 100W
and Australian models
Indication