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XV-DV777
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SAFETY INFORMATION
LABEL CHECK
Name label
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.
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.
LASER DIODE CHARACTERISTICS
FOR DVD : MAXIMUM OUTPUT POWER : 5 mW
WAVELENGTH : 650 nm
FOR CD :
MAXIMUM OUTPUT POWER : 5 mW
WAVELENGTH : 780 nm
Additional Laser Caution
: See page 24 on the service manual RRV3748.
WLXJ, NTXJ and TDXJ/RB types : PRW1608
NAXJ5 type : XRW3013
1.
· Laser diode is driving with Q307 (650 nm LD) and Q308
(780 nm LD) on the 08 DVDM Assy.
Therefore, when short-circuit between the emitter and
collector of these transistors or the base voltage is supplied
for transistors turn on, the laser oscillates. (failure mode)
· In the test mode
, there is the mode that the laser oscillates
except for the disc judgment and playback. LD ON mode in
the test mode oscillates with the laser forcibly.
2. When the cover is open, close viewing through the objective
lens with the naked eye will cause exposure to the laser beam.
