Pioneer ap 710 service manual

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GD PIONEER"

TheArtofEnterlainment

ORDER NO.
ARP21 79
STEREO AMPLIFIER
A - P 5 I D
A-P710 AND A-P510 HAVE THE FOLLOWING :
1 MM Po Ileanhment Ilemerh
w- A-P710 A-P51o w"
HE C 0 ac 220v. 240v (switchable) a:
He 0 0 Ac 220v, 240v Iawkchable) *
HEWZIW o 0 Ac 220v. 240v (switchable) a:
Kuc - O Ac120v only
so 0 o AC110V, 120v-127v. 220v. 240v Imhlblfi

* Chenpe the Men oi the power transformr Iced wire.

' This manual ls applicable to the A-P710/HE, HB, A-P51OIHE and HB types.

0 As to the A-P710IHB end A-P51OIHB types. refer to page 40.

s As to the other types, refer to applicable service manual.

0 These products are components of systems. As to the system composition, refer to the aystem
manuals.

' Each of these products does not function properly when Independent; to avoid malfunctions, be
sure to connect it to the prescribed system components, otherwlse damage may result.

CONTENTS

1. SAFETY INFORMATION .............................. 2 5' DISASSEMBLY ............................... . .......... as

2. EXPLODED VIEWS, PACKING AND 6. IC INFORMATION --------------------------------- 39
PARTS LIST ................................................ 3 7. FOR A- P710/HB AND A- P510/HB TYPES 4°

3. SCHEMATIC DIAGRAM AND P.C.BOARDS s. PANEL FACILITIES ------ -- ..
CONNECTION DIAGRAM--- --------------- 7 s. SPECIFICATIONS ------------

4. pca 's PARTS LIST ........................ 31

PIONEER ELECTRONIC CORPORATION 4-1. Meguro 1-Chome. Meguro~ku. Tokyo 153, Japan

PIOIEER ELEM SERVICE INC. RC. BOX 1760, Long Beach, California 90801 USA.

PIO'EER ELECTRONICS OF CANADA, NC. 505 Cochrane Drive, Markham. Ontario L39 SE3 Canada

PIOIEER ELECTROMC [ENE] N.V. Keetberglaan 1, 2740 Beveren. Belgium

HOMER ELECTRONICS AUSTRALIA PW. UT). 173-184 Boundary Road. Braeside. VICIOiIa 3195. Australia TEL: [03] 550-9911

0 PIONEER ELECTRONIC CORPORATION 1991 YV FEB. 1991 Primed in km

25363

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A-P71 O, A-P51 O

This service manual is intended for qualified service technicians; it is not
meant for the casual do-it-yourselfer. Qualified technicians have the neces-
sary 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.

1 . SAFETY INFORMATION

(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.l 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 60Hz outlet and turn the AC power switch on. Any
current measured must not exceed 0.5mA.

A- Reading should

Leakage not be above

Device current 0-5mA
under tester
test '
Test all
exposed metal
surfaces
2-wire cord

69 Also test with
plug reversed Earth
(Using AC adapter ground
plug as requiredl

AC Leakage Test

ANY MEASUREMENTS NOT WITHIN THE LIMITS
OUTLINED ABOVE ARE INDICATIVE OF A PO-
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, sl'own in
the parts list in this Service Manual, may createshock.
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.