Pioneer a 91 d service manual

Page 1

{ID PIONEER

The future of sound and vision.

Original

efiicc

(fl/[antral I

ORDER NO.
AR P 1 4 6 4
STEREO AMPLIFIER
A - 9 I D
MODEL A -- 91 D COMES IN FOUR VERSIONS DISTINGUISHED AS FOLLOWS:
Type Power requirement Export destination
KUICA AC12OV only U.S.A and Canada
Ha Aczzov,240w5wnchabla)* United Kingdom
H. AC220V,24OV(Switnhabla) West Germany
SDIG AC 1 1OV,12OV -127V,220V,240V(SWHChabIe) U.S,MiIitary

Changa the primary fuss of the power supply assembly and the Primary wiring.

0 This service manual ls applicable to the KU/CA,HB,HEZ and SD/G types.

0 As to the HB,HEZ and 30/6 types.please refer to pages P69-P70

0 Ce manual pour la servlca comprend Ies explicatians en frangais de réglage.(P65- P66)
0 Esta manual do servicio trata deI método ajusta escrito an espafioI.IP67-P68I

CONTENTS

l . SAFETY INFORMATION ----------------- 2 3_ IMAGE DIAGRAM ............
2 . SPECIFICATIONS -------------------- 3 9 . ELECTRICAL PARTS LIST -
3. PANEL FACILITIES --------------------- -4 l 0. CIRCUIT DESCRIPTIONS -
4. EXPLODED VIEWS AND PARTS LIST-- 8 1 1 , 1c IMFORMATION ....................... 57
5. PACKING ------------------------------ .. 8 I 2. ADJUSTMENT ------------------------------ 63
6. SCHEMATIC DIAGRAM ----------------- 13 REGLAGE
7. P.C.BOARDS CONNECTION AJUSTE

DIAGRAM ---------------------------------- 29 I 3 . FOR HB, HEZ and SD/G TYPES ----- 69

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

PIONEER ELECTRONICS SERVICE INC. PO, BOX 1760, Long Beach. California 90801 USA,

PIONEER ELECTRONICS OF CANADA, INC. 505 Cochrane Drive. Markham. Ontario LBR 8E3 Canada

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

PIONEER ELECTRONICS AUSTRALIA PTY. LTD 178 184 Boundary Road Braeside Vlcloria 3195. Australia TEL. [03] 580 9911

YA C) AUG 1987 Prifled In Japan

Page 2

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 229-2 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 card 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
not be above
0.5mA

Device
under
8"

Test all
exposed metal
surfaces

2-wire cord

@ Also test with .
plug reversed Earth
(Using AC adapter ground
plug a: required)

AC Leakage Test

ADVAFISEL!
Lilhiumbatteri. Eksplosionsfare. Udskift-

ning ma kun foretages at on sagkyndig,
09 earn beskrevet i servicemanualen.

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

WARNING!

Lithium batteries. Danger of explosion.
Replacement must be done by qualified
personnel and only by following the
instructions given in the service manual.

Denne advarsel or angivet pa ptoduktet elleri
brugsvejlcdningen. Ved udskiftning af lithium
batterieme folges nedenstacnde anveisning.
Batterieme ma kun udskiftes med batterier af
samme type og macrke.

This warning is stated on the product or in the
operating instructions. When replacing the
lithium batteries, follow the note below.

The batteries must be replaced only by batter-
ies of the same type and manufacture.