Pioneer GM-X404 Посібник з експлуатації - Сторінка 2
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GM-X404,xX304
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1. SAFETY INFORMATION (UC MODEL)
CAUTION
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.
WARNING
Lead in solder used in this product is listed by the California Health and Welfare agency as a known
reproductive
toxicant which may cause birth defects or other reproductive harm (California Health & Safety Code, Section 25249.5).
When Servicing or handling circuit boards and other components which contain lead in solder, avoid unprotected skin
contact with the solder. Also, when soldering do not inhale any smoke or fumes produced.
2. DISASSEMBLY
@ Removing the Case and Panel
1.Remove four screws, and then remove two cases.
2.Remove two screws, and then remove panel.
@ Removing the Amp Unit
1. Remove thirteen screws.
2. Amp
unit is unremovable from heat sink if pulled up
ordinarily, because silicone compound
has been
applied between heat sink and subheat sink.
To remove amp unit, therefore, follow steps below.
a.Unfasten
two arbitrary screws
securing power
transistor.
b.Screw them little by little alternately into screw
holes A to get amp unit afloat and remove it.
3.Once amp unit has been removed, screws with which
Power
transistor
has been
secured
should
be
returned to thier original position.
lsolator Unit
Subheat
Sink
Heat Sink
Fig.2