Pioneer vsx 305 service manual

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GD PIONEEIT

The Art of Entertainment

Service
Manual

AUDIO/VIDEO STEREO RECEIVER

VSX-405
vsx-305

THIS MANUAL IS APPLICABLE TO THE FOLLOWING MODEL(SI AND TYPEISI.

Model

Type Power Re uiramsnt R a k
VSX-OS VSX-305 11 em r 5

ORDER NO.
RRV1467

KUXJ O O AC1 20V
KCXJ O O ACIZOV

CONTENTS
I. SAFETY INFORMATION ............................................ 2
2. EXPLODED VIEWS, PACKING AND PARTS LIST ....... 3
3. BLOCK DIAGRAM ....................................................... 9
4. SCHEMATIC AND PCB CONNECTION

DIAGRAMS ............................................................... 11
5. PCB PARTS LIST.. .35
6. ADJUSTMENTS .. ...40
7. IC INFORMATION ...42
8. FL INFORMATION ...44
9. DISASSEMBLY ...45
10. PANEL FACILITIES I. ....47
11. SPECIFICATIONS 51

www.e|ectronicsrepair.net

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VSX-405, VSX-305

1. 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

Lead in solder used in thin 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 (a Safety Code. Section 25249.5).
When servicing or handling circuit board: and other componentl which contain lead in solder. avoid unprotécted skin contact with
the solder. Also. when soldering do not inhale any emoke or fumel produced.

NOTICE
(FOR CANADIAN MODEL ONLY)

Fuse symbols {EB- (fast operating fuse) and/or a (slow operating fuse) on PCB indicate that replacement pans

must be of identical designation.

REMAROUE
(POUR MODELE CANADIEN SEULEMENT)

Les symboles de fusible -EB (fusible de type rapide) et/ou B- (fusible de type lent) sur CCi indiquent que les

pieces de remplacemenl doivent avoir Ia meme designation.

(FOR USA MODEL ONLY)
1.5AFETY 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 Iine cord of the appliance directly into a 120V
AC 60Hz outlet and turn the AC power switch on. Any
current measured must not exceed 0.5mA.

Reading should

Leakagg not be above
Current 0.5mA
tester

Device
under
tesr

Test all
exposed metal
surfaces

@ Also test wrlh
plug reversed
(Using AC adapter
plug as requiredl

Earth
ground

AC Leakage Test

ANY MEASUREMENTS NOT WITHIN THE LIMITS
OUTLINED ABOVE ARE INDICATIVE OF A P0-
TENTIAL SHOCK HAZARD AND MUST BE COR-
RECTED BEFORE RETURNING THE APPLIANCE TO
THE CUSTOMER.

2.PRODUCT SAFETY NOTICE

Many electrical and mechanical parts in the appli-
ance have special safety related characteristics. These
are often not evident from visual inspection nor the
protection afforded by them necessarily can be ob-
tained by using replacement components rated for vol-
tage. 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 A on the schematics and
on the parts list in this Service Manual.
The use of a substitute replacement component which
dose 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 ad-
ditional copies of. PIONEER Service Manual may be
obtained at a nominal charge from PIONEER.