Pioneer sa 760 service manual

Page 1

0,9 PIONEER

self/7'06
cfl/Ianual

CIRCUIT DESCRIPTIONS
REPAIR & ADJUSTMENTS

ORDER NO.
ARP-830-O

STEREO AMPLIFIER

A-7SDCBKJ
EBA-760

MODEL SA-760 COMES IN SEVEN VERSIONS DISTINGUISHED AS FOLLOWS:

Applicable model
Type SA-760 SA760 Power requirement Destination
[BK]
KU 0 ~ AClZOV only U.s.A.
HE C) O AC220V (240V) switchabie European continent
H8 0 O Ac24ov (220w switchable United Kingdom
3 O O AC11OV, 120v, 220v, 240v (Switchable) Generai export
KC O - AC12OV only Canada
H E2 0 O AC220V (240w switchable West Germany
YP O A AC240V only Australia

This service manual is applicable to the KU, HE, HB and S types.

As to the HEZ, YP types, please refer to the additional service manual (ARP-831).
As to the KC type, please refer to the additional service manual (ARP.870I.

As to the HE, HB and 8 types, please see page 24.

SA-760 [BK] is the same as the SA-760 except for the exterior design (color).

0....

PIONEER ELECTRONIC CORPORATION 471, Meguro i-CNDVWa Megurtr-ur, Tokyo 153. Japan
PIONEER ELECTRONICS [USA] INC. p O Box 1760. Long Beach, Cahforma 90801 U s A
TEL: [806142144134 {BOD} 23770424
PIONEER ELECTRONIC [EuncmE] N.v. Keetberglaan 1. 2740 Revamp. Belgium TEL 03/775 28 08
plONEEn ELECTRONICS AUSTRALIA PTV. LTD. 178/le Boundary Quad. Bragging VICEQrir-s 3185 Austvraila
TEL [031580 9911

YA © MAY,I985 Printed in Japan

Page 2

CONTENTS

1. SAFETY INFORMATION ............... 2
2. SPECIFICATIONS .................... 3
3, FRONT PANEL FACILITIES ............ 4
4. PARTS LOCATION ................. 6
5. PACKING .......................... 7
6. EXPLODED VIEW .................... 8

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, '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.
Reading should
Leakage not be above
Device current 0,5rnA
under tester

test

Test all
exposed metal
surlaces

2-wire cord

© Also test with
plug reversed Earth
(Using AC adapter I ground
plug as required)

AC Leakage Test

7. BLOCK DIAGRAM ................... 11
8. P.C. BOARDS CONNECTION DIAGRAM . . , . 13
9. SCHEMATIC DIAGRAM ................ 17
10. ELECTRICAL PARTS LIST .............. 22
11. FOR HE, HB,SAND S/G TYPES .......... 24

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 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 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, or additional copies of, PIONEER
Service Manual may be obtained at a nominal charge from
PIONEER.