Pioneer deh 50 ub service manual

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Pioneer sound. VIE/onsou/

Service
Manual

iu- ch4053
DEHrSOUB/XS/EWS
CD RDS RECEIVER
D E H 50 U B/XS/EW5
This service manual should be used together with the following manual(s):
Model No. Order No. Mech.Module Remarks
CX-3240 CRT4050 S10.SCOMP2-iPod/USB CD Mech. Module :Circuit Descriptions, Mech. Descriptions, Disassembly

For details, refer to "Important Check Points for Good Servicing".

PIONEER CORPORATION 4-1, Meguro 1-chome, Meguro-ku, Tokyo 153-8654, Japan
PIONEER ELECTRONICS (USA) INC. P.O. BOX 1760, Long Beach. CA 90801-1760. USA.
PIONEER EUROPE NV Haven 1087, Keelberglaan 1, 9120 Melsele, Belgium
PIONEER ELECTRONICS ASIACENTRE PTE. LTD. 253 Alexandra Road: #04-01, Singapore 159936
©P|ONEER CORPORATION 2007
K-ZZA. NOV. 2007 Primed In Japan

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SAFETY INFORMATI6N

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.

. Safety Precautions for those who Service this Unit.
When checking or adjusting the emitting power of the laser diode exercise caution in order to get safe, reliable
results.

Caution:
1. During repair or tests, minimum distance of 13 cm from the focus lens must be kept.
2. During repair or tests, do not view laser beam for 10 seconds or longer.

CAUTION:
USE OF CONTROLS 0R ADJUSTMENTS OR PERFORMANCE OF PROCEDURES OTHERTHANTHOSE
SPECIFIED HEREIN MAY RESULT IN HAZARDOUS RADIATION EXPOSURE.

CAUTION

This product contains a laser diode of higher class
than l.To ensure continued safety, do not
remove any covers or attempt to gain access to
the insrde of the product.

Refer all servrcing to qualified personnel.

CLASS 1

LASER PRODUCT

En

WARNING!

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
Wave length : 785 nm to 814 nm
Maximum output: 1 190W(Emitting period : unlimited)

Additional Laser Caution

Transistors 0101 in PCB drive the laser diodes.

When 0101 is shorted between their terminals, the laser diodes will radiate beam.

If the top cover is removed with no disc loaded while such short-circuit is continued,
the naked eyes may be exposed to the laser beam.

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