Pioneer GM-X304 Panduan Servis - Halaman 2

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Halaman Cetak

GM-X404,xX304

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

returned to thier original position.

lsolator Unit

Subheat

Sink

Heat Sink

Fig.2