4
CX-LDB10/LDB20
SECTION 1
SERVICING NOTES
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
– Back Panel –
Model Name
Power Voltage Indication
Mexican model
120 V AC, 60 Hz
AEP, Russian models
230 V AC, 50/60 Hz
Korean model
220 V AC, 50/60 Hz
Australian model
230 – 240 V AC, 50/60 Hz
Other models
110 – 120 V or
(E51, Singapore, Malaysia and
220 – 240 V AC, 50/60Hz
Argentine models)
Power voltage
indication
