Pioneer vsx 81 txvs 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.

NOTICE
(FOR CANADIAN MODEL ONLY)

Health & Safety Code Section 25249.6 - Proposition 65

Fuse symbols EEHfast operating fuse) and/or EE (slow operating fuse) on PCB indicate that replacement parts must

be of identical designation.

REMARQUE
(POUR MODELE CANADIEN SEULEMENT)

Les symboles de fusible EH (fusible de type rapide) eru E (fusible de type lent) sur CCI indiquent que les pieces

de remplacement doivent avoir la meme designation.

7 (FOR USA MODEL ONLY)

1. SAFETY PRECAUTIONS

The following check should be performed for the
continued protection of the customer and service
technician.

LEAKAGE CURRENT CHECK

Measure leakage current to a known earth ground
(water pipe. conduit, etc.) by connecting a leakage
current tester such as Simpson Model 229-2 or
equivalent between the earth ground and all exposed
metal parts of the appliance (input/output terminals.
screwheads. metal overlays, control shaft. etc). Plug
the AC line cord of the appliance directly into a 120V
AC 60 Hz outlet and turn the AC power switch on. Any
current measured must not exceed 0.5 mA.

L

0 Reading should

Leakage not be above

Device current
under
test

0.5 mA

tester

Test all
exposed metal
su rfaces

Also test with
plug reversed : Earth
(Using AC adapter ' ground
plug as required)

AC Leakage Test

ANY MEASUREMENTS NOT WITHIN THE LIMITS
OUTLINED ABOVE ARE INDICATIVE OF A POTENTIAL
SHOCK HAZARD AND MUST BE CORRECTED BEFORE
RETURNING THE APPLIANCE TO THE CUSTOMER.

2. PRODUCT SAFETY NOTICE

Many electrical and mechanical parts in the appliance
have special safety related characteristics. These are
often not evident from visual inspection nor the protection
afforded by them necessarily can be obtained by using
replacement components rated for voltage, wattage. etc.
Replacement parts which have these special safety
characteristics are identified in this Service Manual.

Electrical components having such features are

identified by marking with a Q on the schematics and 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 time to time. For the latest
information, always consult the current PIONEER Service
Manual. A subscription to. or additional copies of.
PIONEER Service Manual may be obtained at a nominal
charge from PIONEER.

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