3
SECTION 1
SERVICING NOTES
The laser diode in the optical pick-up block may suffer electro-
static 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 emis-
sion, observe from more than 30 cm away from the objective lens.
NOTES ON HANDLING THE OPTICAL PICK-UP
BLOCK OR BASE UNIT
MODEL IDENTIFICATION
– BACK PANEL –
Model
Part No.
US model
4-224-879-0
s
Canadian model
4-224-879-1
s
AEP model
4-224-879-2
s
Australian model
4-224-879-3
s
E model
4-224-879-4
s
Singapore model
4-224-879-5
s
Saudi Arabia model
4-224-879-6
s
HOW TO OPEN THE DISC TABLE WHEN POWER
SWITCH TURNS OFF
Insert a tapering driver into the aperture of the unit bottom, and
turn it in the direction of the arrow (to OUT direction).
table
tapering driver
*
To close the disc table, turn the tapering
driver in the reverse direction (to IN direction).
Part No.
Notes on chip component replacement
• Never reuse a disconnected chip component.
• Notice that the minus side of a tantalum capacitor may be dam-
aged by heat.
Flexible Circuit Board Repairing
• Keep the temperature of the soldering iron around 270 ˚C dur-
ing repairing.
• Do not touch the soldering iron on the same conductor of the
circuit board (within 3 times).
• Be careful not to apply force on the conductor when soldering
or unsoldering.
CAUTION
Use of controls or adjustments or performance of procedures
other than those specified herein may result in hazardous ra-
diation exposure.
Carry out the “S curve check” in “CD section adjustment” and
check that the S curve waveforms is output three times.
LASER DIODE AND FOCUS SEARCH OPERATION
CHECK
This appliance is classified as a CLASS 1 LASER product.
The CLASS 1 LASER PRODUCT MARKING is located on
the rear exterior.
Summary of Contents for CDP-CE545 - Compact Disc Player
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