HCD-XGR80 - Sony Audio Service Manual (repair manual). Page 3

Read Sony HCD-XGR80 Service Manual online

3
HCD-XGR80
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.
LASER DIODE AND FOCUS SEARCH OPERATION
CHECK
Carry out the “S curve check” in “CD section adjustment” and
check that the S curve waveforms is output three times.
• MODEL IDENTIFICATION
– Rear Panel –
MODEL
E model
E51 model
Mexican model
Argentina model
PARTS No.
4-237-748-6
s
4-237-748-7
s
4-237-748-8
s
4-237-748-9
s
Abbreviation
E51
: Chilean and Peruvian model
PART No.
Page of 74

Click on the first or last page to see other HCD-XGR80 service manuals if exist.