Servicing Notes - Sony HCD-HPX7 Service Manual

HCD-HPX7
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.
4
SECTION 1

SERVICING NOTES

• MODEL IDENTIFICATION
– Rear View –
Model Name
Canadian model
Australian model
AEP, UK models
Taiwan model
Korean model
Mexican model
Other models
Power requirement
indication
Power Voltage Indication
AC: 120 V - 60 Hz
AC: 230 – 240 V - 50/60 Hz
AC: 230 V - 50/60 Hz
AC: 120 V - 50/60 Hz
AC: 220 V - 60 Hz
AC: 120 V - 60 Hz
AC: 120 V, 220 V, 230 – 240 V
- 50/60 Hz