Pioneer XV-DV180, Service Manual

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SAFETY INFORMATION
LABEL CHECK
N ame label
WAR N I N G !
THE AEL (ACCESSIBLE EMISSIO N LE V EL) OF THE LASER POWER OUTPUT IS LESS THA N CLASS 1
BUT THE LASER COMPO N E N T IS CAPABLE OF EMITTI N G RADIATIO N EXCEEDI N G THE LIMIT FOR
CLASS 1.
A SPECIALLY I
N STRUCTED PERSO N SHOULD DO SER V ICI N G OPERATIO N OF THE APPARATUS.
LASER DIODE CHARACTERISTICS
FOR D V D : MAXIMUM OUTPUT POWER : 5 mW
WA V ELE N GTH : 650 nm
FOR CD : MAXIMUM OUTPUT POWER : 5 mW
WA V ELE N GTH : 7 8 0 nm
Additional Laser Caution
∗
: See page 2 8 .
1.
• Laser diode is driving with Q307 (650 nm LD) and Q30 8
(7 8 0 nm LD) on the 0 8 D V DM 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 O N 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.
This service manual is intended for q ualified service technicians; it is not meant for the casual
do-it-yourselfer. Qualified technicians have the necessary test e q uipment 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
q ualified to perform the repair of this product properly and safely,
you should not risk tryin g to do so and refer the repair to a q ualified service technician.
PRW160 8