Read Sony DAV-EA20 / HCD-EA20 Service Manual online
4
HCD-EA20
NOTES ON HANDLING THE OPTICAL PICK-UP BLOCK
OR BASE UNIT
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.
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.
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.
JIG ON REPAIRING
When repairing this set, etc., connect the extension cable as the
figure shown below.
figure shown below.
•
Service position of mechanism block
MODEL IDENTIFICATION
— BACK PANEL —
Part No.
Model
AEP, UK models
Russian model
PARTS No.
4-249-697-0
s
4-249-697-1
s
SECTION 1
SERVICING NOTE
MS-128 board
J-2501-212-A (1mm/5P/L300)
DVD mechanism section
(CDM77A-DVBU20)
(CDM77A-DVBU20)
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