DVH-3900MP/XZ/EW5
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SAFETY INFORMATION
1. Safety Precautions for those who Service this Unit.
• Follow the adjustment steps in the service manual when servicing this unit. When checking
or adjusting the emitting power of the laser diode exercise caution in order to get safe, reliable results.
Caution:
1. During repair or tests, minimum distance of 13 cm from the focus lens must be kept.
2. During repair or tests, do not view laser beam for 10 seconds or longer.
2. The trianglar label is attached to the mechanism unit frame.
On the bottom of the this unit.
CAUTION
This product contains a laser diode of higher class
than 1. To ensure continued safety, do not
remove any covers or attempt to gain access to
the inside of the product.
Refer all servicing to qualified personnel.
The following caution label appears on your unit.
WARNING!
The AEL (accessible emission level) of the laser power output is less than CLASS 1
but the laser component is capable of emitting radiation exceeding the limit for
CLASS 1.
A specially instructed person should do servicing operation of the apparatus.
This service manual is intended for qualified service technicians; it is not meant for the casual do-it-yourselfer.
Qualified technicians have the necessary test equipment and tools, and have been trained to properly and safely
repair complex products such as those covered by this manual.
Improperly performed repairs can adversely affect the safety and reliability of the product and may void the warranty.
If you are not qualified to perform the repair of this product properly and safely, you should not risk trying to do so
and refer the repair to a qualified service technician.
Laser diode characteristics
Wave length:
DVD : 640 nm to 660 nm
CD
: 775 nm to 805 nm
Maximum output:
DVD : 1.37 mW(Emitting period : 9 sec.)
CD : 710 uW(Emitting period : unlimited)
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TEL 13942296513 QQ 376315150 892498299
