Pioneer PD-M407 Wartungshandbuch - Seite 2

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1. Adjustment

PD-M427, PD-M407

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.

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

LABEL CHECK

WPWXJ type Only

Additional Laser Caution

1. Laser Interlock Mechanism

The ON/OFF (ON: low level, OFF: high level)

status of S601 (LPS1) and S602 (LPS2)

switches for detecting the loading state is

detected by the system microprocessor, and

the design prevents laser diode oscillation

except when both switches S601 and S602

are ON (low level or clamped state).

Thus, interlock will no longer function if

switches S601 (LPS1) and S602 (LPS2) are

deliberatery shorted (low level). The interlock

also does not function in the test mode

Laser diode oscillation will continue, if pin 33

of CXA1782CQ (IC151) on the MOTHER

BOARD ASSY is connected to GND, or pin

50 of IC351 (LDON) is connected to low level

(ON), or else the terminals of Q151 are shorted

to each other (fault condition).

2. When the cover is opened with the servo

mechanism block removed to be turned over,

close viewing of the objective lens with the

naked eye will cause exposure to a Class 1

laser beam.

∗

Refer to page 22.

∗