SD-PX15H (serv.man11). Cover contents - Sharp Audio Service Manual (repair manual). Page 2

SD-PX15H

 – i –

The AEL (Accessible Emission Level) of Laser Power Output
for this model is specified to be lower than Class 1 Require-
ments. However, the following precautions must be observed
during servicing to protect your eyes against exposure to the
Laser beam.

(1) When the cabinet has been removed, the power is turned

on without a compact disc, and the Pickup is on a position
outer than the lead-in position, the Laser will light for sev-
eral seconds to detect a disc. Do not look into the Pickup
Lens.

(2) The Laser Power Output of the Pickup inside the unit and

replacement service parts have already been adjusted prior
to shipping.

(3) No adjustment to the Laser Power should be attempted

when replacing or servicing the Pickup.

(4) Under no circumstances look directly into the Pickup Lens

at any time.

(5) CAUTION - Use of controls or adjustments, or performance

of procedures other than those specified herein may result
in hazardous radiation exposure.

Before returning the unit to the customer after completion of a
repair or adjustment it is necessary for the following withstand
voltage test to be applied to ensure the unit is safe for the cus-
tomer to use.
Setting of Withstanding Voltage Tester and set.

Material: AlGaAs/AlGalnP
Wavelength: 785 nm/650 nm
Emission Duration: continuous
Laser Output: max. 0.6 mW

Laser Diode Properties

Set name

set value

Withstanding Voltage Tester

Test voltage

4.7 kV DC

Set time

3 secs

Set current (Cutoff current)

3 mA

Unit

Judgment

OK: The "GOOD" lamp lights.
NG: The "NG" lamp lights and the buzzer sounds.

PROBE

AC

OUT

UNIT

SHORT-CIRCUIT

AC POWER

SUPPLY CORD

CONNECT THE PROBE

TO GND OF CHASSIS

SCREW

WITHSTANDING

VOLTAGE TESTER