Pioneer vsx 74 txvi service manual

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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.

WARNING
This product contains lead in solder and certain electrical parts contain chemicals which are known to the state of California to
cause cancer, birth defects or other reproductive harm.

Health & Safety Code Section 25249.6 - Proposition 65

NOTICE

(FOR CANADIAN MODEL ONLY)

Fuse symbols EH» (fast operating fuse) and/or a» (slow operating fuse) on PCB indicate that replacement
parts must be of identical designation.

REMARQUE

(POUR MODELE CANADIEN SEULEMENT)

Les symboles de fusible EEI- (fusible de type rapide) et/ou a (fusible de type lent) sur CCI indiquent que
les pieces de remplacement doivent avoir la meme designation.

-(FOR USA MODEL ONLY)

1. SAFETY PRECAUTIONS ANY MEASUREMENTS NOT WITHIN THE
The following check should be performed for the LIMITS OUTLINED ABOVE ARE INDICATIVE

continued protection of the customer and service OF A POTENTIAL SHOCK HAZARD AND

technician.

LEAKAGE CURRENT CHECK MUST BE CORRECTED BEFORE RETURN-
Measure leakage current to a known earth ground ING THE APPLIANCE To THE CUSTOMER-

(water pipe, conduit, etc.) by connecting a leakage

current tester such as Simpson Model 229-2 or 2_ PRODUCT SAFETY NOTICE

equivalent between the-earth 9mm and all exposed Many electrical and mechanical parts in the appliance

metal parts Of the appliance (Input/output terminals, have special safety related characteristics. These are

screwheads, metal overlays, 30""0' shaft, etc.). PIUQ often not evident from visual inspection nor the

19 AC 9 cord DI 19 appliance directly into a 120V protection afforded by them necessarily can be obtained

AC 60 HZ outlet and turn the AC power switch on. Any by using replacement components rated for voltage,

current measured must not exceed 0.5 mA. wattage, etc. Replacement parts which have these

special safety characteristics are identified in this
Service Manual.

Electrical components having such features are

magggbsrmmd identified by marking with a A on the schematics and
05 We on the parts list in this Service Manual.
The use of a substitute replacement component which
does not have the same safety characteristics as the
PIONEER recommended replacement one, shown in the
parts list in this Service Manual, may create shock, fire,
or other hazards.

Product Safety is continuously under review and new
instructions are issued from timeto time. For the latest
information, always consult the current PIONEER

Service Manual. A subscription to, or additional copies
mgigfgjgamer Eam of, PIONEER Service Manual may be obtained at a
plug as required) 7 ground nominal charge from PIONEER.

AC Leakage Test

Device
under
test

Test all
exposed metal
surfaces

it

Also test wbth

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