Pioneer a 401 service manual

Page 1

(U) PIONEER"

The Art of Entenainment

Scfiicc _
antral Q

5-1 " ARP2480

STEREO AMPLIFIER

A-4

A-401 HAS THE FOLLOWING:

Type Power Requirement Remarks
HE AC220 - 230V, 230V - 240V (switchable)
HEWZ ACZZO - 230V. 240V (switchable)I
KC AC120V only
SD AC110V, 120 ~ 127v, 220v, 240V (switchable)

' Change the connection of the power transformer's primary wrring

O This manual is applicable to HE, HEWZ. KC, and SD types.

0 For HEWZ, KC AND SD types, refer to page 23.

0 Ce manuel pour Ie service comprend Ies explications de réglage en francais.
a Este manual de servicio trata del método ajuste escrito en espanol.

STEREO AMPLIFIER
A "' 4 -

0 Refer to the service manual ARP2480 for A-401.
CONTENTS

EXPLODED VIEWS. PACKING AND PARTS LIST
SCHEMATIC DIAGRAMS
PCB CONNECTIONS DIAGRAM
PCB PARTS LIST
ADJUSTMENTS ~
REGLAGE ...........
. AJUSTE ................... V.
FOR HEWZ. KC AND SO TYPES ,
PANEL FACILITIES
SPECIFICATIONS

~Immwmz>umv

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PIONEER ELECTRONIC CORPORATION 4.1. Meguro 1»Chome. Meguro-ku Tokyo 153. Japan

PIONEER ELECTRONICS SERVICE INC. PO Box 1760 Long Beach Calilornla 90801 U S A

PIONEER ELECTRONICS OF CANADA, INC. 300 Allstate Parkway Markham Oman!) LBR 0P2 Canada

PIONEER ELECTRONIC [EUROPE] N.V. Haven 1087 Keelberglaan 1, 9120 MeIsele, Belgium

PIONEER ELECTRONICS AUSTRALIA PTY LTD. 178-184 Boundary Road, BraeSIde. VICIOIIa 3195 Austraha TEL [03] 58079911

© PIONEER ELECTRONIC CORPORATION 1992 FJ APR. 1992 pnmed m Japan

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1. EXPLODED VIEWS, PACKING AND PARTS LIST

NOTES:
0 The parts with. an encircled number are generally unavailable because they are not in our Master Spare Parts List

0 The A; marl: found on some component parts indicates the importance of the safety factor of the part. Therefore, when replacing,

be sure in use parts of identical designation.
0 Pam marked by © are not always kept in stock. Their delivery time may be longer than usual or May may be unavailable.

1.1 PACKING

Mark No. Description Parts No.
1 Front rear pad AHA1335
2 Packing sheet AHGIOIG
3 Operating instructions ARE1227

(English, French, German,
Italian. Dutch, Swedish.
Spanish. Portuguese)

4 Packing case AHD2242

1.2 EXPLODED VIEWS

Mark No. Description Parts Not M No Description Parts No.
1 Chassis ANAlOGS 36 Remote slide rotary switch ASU1042
2 ----------- 37 Remote slide rotary switch ASU1043
3 Insulator assembly AMR2140 38 Nut NKSOFUC
[1; 4 Power transformer AT51346 39 Bonnet ANE1147
5 Rear panel ANCIENT 40 Bottom plate ANFIOSS
6 Earth terminal AKE-031 41 SHIELD assembly AWZ4034
© 7 AF COMPLEX assembly AWZ4029 42 Binder AEFIOM
8 Pin jack with plug AKMIOIQ 43 Coil spring B ABH-OSZ
A 9 Voltage selector(SD only) AKX4507 44 Power knob AAD1984
A; 10 3? AC outlet (KC SD) AKP-515 45 Front panel ANBHQS
11 Panel base AMBlQGi 46 LED lens (ABS) PNWZOIB
© 12 TONE assembly AW24032 47 LED lens AMR1160
13 MUTE assembly A\V24037 48 ---------
14 Coil spring A ABHmSl 49 Rotary knob S AABIZ'IG
15 Direct knob assembly AAD2220 50 Rotary knob M AABIZSI
16 Direct IND. assembly AWZ4035 51 Rotary knob L AAB1277
17 LED assembly AVZ4033 52 ----------
18 Fuse card AAX1580 53 """""""
19 Fuse card AAX 302 54 Coil spring B ABH1082
A; 20 FUSE (FIJI, man) AEK-siz 55 Push knob Miami
21 ----------- 56 Name plate AAMlO29
22 PO\VER S\V assembly AVZ4030 57 Bind B tyte ABAZQB
23 SP. SELECT assembly AVZ4036 58 Screw (4X16) ABAIOiG
'24 HEAD PHONE assembly AVVZAOSI 59 Screw ABAIDOQ
'25 Nu: ABN065 60 Screw B tyte A3A1011
26 Nut NKSOFUC 61 Screw A3A1050
27 Nut NK'I'OFUC 62 Screw A3A1048
28 TONE SHIELD (HEW'Z only) ANK1212 63 Heat sink ANHIZSQ
29 Nylon rivet AECIZSG 64 Mica sheet ARI-31014
30 fire clip AECISBB A 65 Trnnaiator (Q3, Q4) 25A1302
3) POWER TRANS Msembly AWZ4039 A 66 Transistor (Q1, Q2) 23C3281
A; 32 AC cord stopper ARC-882 A 67 Transistor (Q5, Q6) zscnar
A; 33 AC power cord ADG1049 68 Screw A3A1082
34 HEAT PROTECT assembly (ill-1038 69 Screw ABAIOII
35 Nylon rive: AECIIGO 70 Screw BB'I'KOPOGDFZK