DVD - DivX Player - BSA3750
3
1. General Sections
Cautions and Warnings
Product Safety Notice
Parts marked with the symbol
!
in the schematic diagram have critical
characteristics.
Use ONLY replacement parts recommended by the manufacturer. It
is recommended that the unit be operated from a suitable DC supply or
batteries during initial check out procedures.
Leakage Current Check/Resistance Check
Before returning the unit to the customer, make sure you make either (1) a leakage current check or
(2) a line to chassis resistance check. If the leakage current exceeds 0.5 milliamps, or if the resistance
from chassis to either side of the power cord is less than 240 K ohms, the unit is defective.
WARNING: DO NOT return the set to the customer until the problem or located is corrected.
Protection of Eyes from Laser Beam
To protect eyes from invisible laser beam during servicing
DO NOT LOOK AT THE LASER BEAM
Laser Caution
This Digital Video Disc Player employs a Laser System. To prevent direct exposure to the laser
beam, do not try to open the enclosure.
Visible laser radiation emits when open and interlocks are defeated.
Use of controls or adjustments or performance of procedures other than those specified herein may
result in hazardous radiation exposure. This CD Changer must be adjusted and repaired only by
qualified service personnel.
DO NOT STARE INTO BEAM.
Laser symbol:
THIS IS COMPACT DISC PLAYER IS CLASSIFIED AS A CLASS 1 LASER PRODUCT.
THE LASS 1 LASER PRODUCT LABEL IS LOCATED ON THE REAR EXTERIOR.
Precautions
1. ESD Precautions in Repairing
1.1 Do not apply excessive pressure on the mechanical parts (moving parts), including the Pickup
Block, as extremely high mechanical precision or required in these parts.
1.2 When soldering the microprocessor and signal processing IC’s, use a ceramic soldering iron or
a soldering iron whose metal part is grounded since they are not resistant to static electricity.
1.3 When removing the solder or soldering the laser shorting lands for the Pickup Block, use a
ceramic soldering iron or a soldering iron whose metal part is grounded since the laser diode or not
resistant to static electricity.
2. DVD Loading Unit Precautions when handling the Mechanism Block
2.1 Do not loosen any screws in the Pickup Block.
