2
1
23
4
12
3
4
C
D
F
A
B
E
XV-DV88
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.
LABEL CHECK
: Refer to page 87 on the service manual RRV2908.
LASER DIODE CHARACTERISTICS
FOR DVD : MAXIMUM OUTPUT POWER : 5 mW
WAVELENGTH : 655 nm
FOR CD : MAXIMUM OUTPUT POWER : 5mW
WAVELENGTH : 785 nm
Additional Laser Caution
1. Inside detection switch (the SSIB assy) and clamp-status
detection switch (S11 on the TRSB assy) are detected by
the microprocessor (IC601 in the DVDM assy).
· To permit the laser diode to oscillate, it is required to set the
inside detection switch for the inside position (ON) and to
set the loading-status detection switch for the clamp position
(the center terminal of S11 is shorted to +5V). The 655 nm
laser diode for DVD oscillation will continue if pin 89 of IC301
is shorted to +5V (fault condition) in the DVDM assy.
The 785 nm laser diode for CD oscillates if pin 90 of IC301 is
shorted to +5V in the DVDM assy.
In the test mode
, the laser diode oscillates when micro-
processor detects a PLAY signal, or when the PLAY key is
pressed (S5857 ON in the FUNC KEY assy), with the above
requirements satisfied.
2. When the cover is open, close viewing through the objective
lens with the naked eye will cause exposure to the laser beam.
Printed on the Rear Panel
VRW1872
WARNING!
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.
SAFETY INFORMATION