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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.

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 : 7 mW

WAVELENGTH : 780 nm

LABEL CHECK

WARNING !

(DRW2168)

* : Refer to page 23. on the service manual RRV2905.

PD-M427

Additional Laser Caution

1. Laser Interlock Mechanism

The position of the switch (S651) for detecting loading

state is detected by the system microprocessor, and

the design prevents laser diode oscillation when the switch (S651)

is not on CLMP terminal side (CLMP signal is OFF or high level).

Thus, the interlock will no longer function if the switch (S651)

is deliberatery set to CLMP terminal side. (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 26 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, close viewing of the objective lens with

the naked eye will cause exposure to a Class 1 laser beam.