Pioneer cdj 900 service manual

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SAFETY INFORMATION

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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.

I 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.

WARNING
B This product may contain a chemical known to the State of California to cause cancer, or birth defects or other reproductive
harm.
Health & Safety Code Section 25249.6 - Proposition 65

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C
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D
IMPORTANT
Laser Pickup specifications and Laser characteristics
THIS PIONEER APPARATUS CONTAINS
LASER 0F CLASS 1. For CD Wave length (typ) : 790 nm
SERVICING OPERATION OFTHE APPARATUS Opelatlon OUIPUI 3 4 mW CW, CIBSS 1 . .
SHOULD BE DONE BY A SPECIALLY Maximum output : Class 1 (Underlault condition)
INSTRUCTED PERSON.
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Additional Laser caution
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1. Laser Interlock Mechanism
The position of the switch (88902) for detecting loading
completion is detected by the system microprocessor, and the
design prevents laser diode oscillation when the switch is not in
LPS1 terminal side (when the mechanism is not clamped and
LPS1 signal is high level.)
I Thus, the interlock will no longer function if the switch is
deliberately set to LPS1 terminal side.
( if LPS1 signal is low level ).
In the test mode * the interlock mechanism will not function.
Laser diode oscillation will continue, if pin 5 of AN22022A
(IC7004) on the SRV Assy is connected to GND, or else the
terminals of Q7002 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.

2 CDJ-900
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