Servicing Notes - Sony HCD-NXM4D Service Manual

HCD-NXM4D
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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 waveform is output several times.
• Abbreviation
E2 : 120 V AC Area in E model
E3 : 240 V AC Area in E model
E15 : Iran model
EA : Saudi Arabia model
SP : Singapore model
TE
L 13942296513
MY : Malaysia model
AUS : Australian model
TH : Thai model
• SERVICE POSITION FOR TAPE MECHANISM DECK
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• NOTE ON CD/DVD MECHANISM DECK EXCHANGE
If CD/DVD mechanism deck is exchanged while the desk had gone into trays 2 or 3, since the address is memorized by the microprocessor,
.
the set will not operate normally.
In this case, please perform cold reset with reference to test mode (page 17.)
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SECTION 1

SERVICING NOTES

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• MODEL IDENTIFICATION
– Back Panel –
MODEL
SP, MY models
E2 model
E3, E15 model
EA model
AUS model
TH model
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PART No.
PART No.
4-253-361-0[]
4-253-361-1[]
4-253-361-2[]
4-253-361-3[]
4-253-361-4[]
4-253-361-5[]
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