Pioneer a 501 r service manual

Page 1

GD PIONEER

The Art Of Entertainment

ORDER NO.
A R P 2 512

STEREO AMPLIFIER

HE, HB, HEWZ

0 Refer to the service manual ARP2305 for A-550R/HE.

O This manual is applicable to A501R/HE, HB and HEWZ.

CONTRAST 0F MISCELLANEOUS PARTS

N 0735:

0 Part without part number cannot be supplied.

' The A mark found on some component parts indicates the importance of the safety factor ofthe part. Therefore, when 75171491713:
be sure to use parts of identical designation

0 Parts marked by © " are not always kept in stock. Their delivery time may be longer than usual or they may be unavailable.

A-501R/HE, A-501R/HB, A-SOI R/HEWZ and A-SSORI HE have the same construction except for the
following:

____
- Part No.
Mark Symbol & Description Remarks
A-SSOR/HE A-501 R/HE A-SOI R/HB A~501RIHEWZ

A AC Power cord ADGID49 ADG 1049 AD61087 ADG1049

[ix AC Socket 3P AKP~502 AKP-SOZ AKP»505 AKP<502
Carbon film resistor (R1, 2) , ............... RDI/dPFMIOOJ
Rotary knob L AAB1160 AABIZSO AABIZSD AAB1290
Rotary knob M AAB1231 M31281 AAB128I AAB128I
From panel ANBMGZ ANB1525 ANB1525 ANE1525
Cushion (Rubber) AEB1074 ...............
Screw BBT30P080FZK BBZ3OF'OBOFZK BBZBOPDBOFZK BBZBOP08OFZK
Packing case AHD2130 AHD2312 AHD2312 AHD2312
Operating instructions ARE1201 AR51245 ..........
(English, French, German,
Italian, Dutch, Swedish,
Spanish, Ponugues)
Operating instructions .......... ARB1385 .....
(English)
Operating instructions ............... ARCISGB
(German)

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

PIONEER ELECTRONICS SERVICE INC. R0. Box 1760, Long Beach, California 90801 USA

PIONEER ELECTRONICS OF CANADA, INC. 300 Allstate Parkway Markham, Ontario L3R 0P2 Canada

PIONEER ELECTRONIC [EUROPE] N.V. Haven 1087 Keetberglaan 1, 9120 Melsele, Belgium

PIONEER ELECTRONICS AUSTRALIA PTY. LTD. 178-184 Boundary Road. BraeSIde. VICIoria 3195, Australia TEL: [03] 580-9911 7

© PIONEER ELECTRONIC CORPORATION 1992 FF APR. 1992 mm, in Japan

Page 2

(U) PIONEER

The Art of Entertainment

£15: 4,1; 000%. :-

5 {:5 a O O :1 m [3' ORDER NO.
L._J (:1 l, J
The above illustration shows the model A-550R. ARP2305
STERO AMPLIFIER
A a! 5 5 D R = S
A- 45 OF!
A - 550R, A - 550R - S AND A -- 450R HAVE THE FOLLOWING :
Modal '
Type Power Requirement Remarks
A-550R A-550R-S A-450R
HE O -- O AC220V-230V, 240V (SwitchahIBI'
HEWZ O O O AC220Vw23OV, 240V (SwitchabIBI

Change the connection of the power transformers primary wiring.

- This manual is applicable to the A - 550R/HE, HEWZ, A - 550R - S/HEWZ, A ~ 450R/HE and HEWZ
types.

' The A - 550R-S is the same as the A- 550R except for color.

0 Ce manual pour le service comprend les explications de réglage en francais.

° Este manual de servicio trata dei método ajuste escrlto en espafiol.

CONTENTS

1. EXPLODED VIEWS. PACKING AND 5. ADJUSTMENT ----------------------------------- 28
PARTS LIST ............................................. 2 5 REGLAGE ............. 29

2. SCHEMATIC DIAGRAM .............................. 7 5. AJUSTE ................ 30

3. P.C,BOARDS CONNECTION DIAGRAM ------ 12 6. PANEL FACILITIES ~ 31

4' PCB'S PARTS LIST ................................ 21 7_ SPECIFICATIONS .................................... 33

PIONEER ELECTRONIC CORPORATION 41, Meguro 1»Chome, Meguro»ku, Tokyo 153, Japan

PIONEER ELECTRONICS SERVICE INC. PO. Box 1750. Long Beach, California 90801 USA.

PIONEER ELECTRONICS OF CANADA, INC. 505 Cochrane Drive, Markham, Ontario L3H 8E3 Canada

PIONEER ELECTRONIC [EUROPE] N.V. Keetberglaan 1, 9120 Beveren, Belgium

PIONEER ELECTRONICS AUSTRALIA PTY. LTD. 178-184 Boundary Road, Braeside, Viclona 3195, Australia TEL: [03] 58043911

© PIONEER ELECTRONIC CORPORATION 1991 DX JULY 1991 Printed in mil '