Pioneer VSX 4500 Service Manual

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OJ) PIONEER

The future of sound and vision.

Sefiricc _ ,,
manual E}: :77 I ORDER NO.
fl AHP1867

AUDIONIDEO STEREO RECEIVER

VSX-4EDDS

VSX-44DD

0 This manual is applicable to the VSX-45008/KUC and VSX-4400/KUC types.

CONTENTS

1_ SAFETY INFORMATION .............................. 2 7_ ADJUSTMENTS ....................................... 32
2. EXPLODED VIEWS AND PARTS LIST ------------ 3 8. IC INFORMATION ----------------------------------- 35
3. PRECAUTIONS ON SERVICE ------------------------ s 9. REMOTE CONTROL UNIT (AXD1104) -------- 38
4. SCHEMATIC DIAGRAM ------------------ 7 10. PANEL FAClLITIES ------------------------ -

5. P.C.BOARDS CONNECTION DIAGRAM~~~-~-15 11. SPECIFICATIONS

6. ELECTRICAL PARTS LIST --------------------------- 27

PIONEER ELECTRONIC CORPORATION 4-1, Meguro LChome, MegurO-ku, Tokyo 153, Japan

PIONEER ELECTRONICS SERVICE INC. P 0. BOX 1760, Long Beach, Caiifornia 90801 USA.

PIONEER ELECTRONICS OF CANADA, INC. 505 Cochrane Dnve, Markham Ontario LSR 8E3 Canada

PIONEER ELECTRONIC [EUROPE] N.V. Keetbeiglaan 1, 2740 Beveren, Belgium

PIONEER ELECTRONICS AUSTRALIA PTY. LTD. 1787184 Boundary Road, Braeside. Victoria 3195, Australia TEL: [03] 5809911

© PIONEER ELECTRONIC CORPORATION 1989 YA AUG. 1989 Primed}, Japan.

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VSX-45CJOS,-44DD

1. SAFETY INFORMATION

1. SAFETY PRECAUTIONS

The following check should be performed for the
continued protection of the Customer and service tech-
nician.
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 2292 or equivalent between
the earth ground and all exposed metal parts of the appli-
ance (input/output terminals, screwheads, metal overlays,
control shaft, etcll. Plug the AC line 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

Leakage not be above

Device current OrSMA
nae, tester
test

Test all

exposed metal

surfaces

2-wire cord

@ Also test wrth .
plug reversed , Earth
(Using AC adapter 7 ground
plug as requiredl

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 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, etct
Replacement parts which have these special safety charac-
teristics are identified in this Service Manual.

Electrical components having such features are identified

by marking with a i 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, oradditional copies of, PIONEER
Service Manual may be obtained at a nominal charge from
PIONEER,