Pioneer XR-A390 Service Manual - Page 2

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1. SAFETY INFORMATION

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

XR-A390

IMPORTANT

THIS PIONEER APPARATUS CONTAINS

LASER OF CLASS 1.

SERVICING OPERATION OF THE APPARATUS

S H O U L D B E D O N E B Y A S P E C I A L L Y

INSTRUCTED PERSON.

LASER DIODE CHARACTERISTICS

MAXIMUM OUTPUT POWER: 5 mW

WAVELENGTH: 780 - 785 nm

Additional Laser Caution

1. Laser Interlock Mechanism

The position of the switch (S9501) for detecting loading

state is detected by the system microprocessor, and

the design prevents laser diode oscillation when the

switch (S9501) is pressed physically.

Thus, the interlock will no longer function if the switch (S9501)

is released physically and deliberatery.

The interlock also does not function in the test mode

Laser diode oscillation will continue, if pin 1 of

CXA1821M (IC8101) on the CD ASSY mounted on the

$M Loading Mechanism assembly is connected to GND,

or else the terminals of Q8101 are shorted to each other

(fault condition).

2. When the cover is opened, close viewing of the objective

lens with the naked eye will cause exposure to a Class

1 laser beam.

∗

: Refer to page 61 on the service manual RRV2328.

∗