Pioneer A X450 Service Manual

Page 1

ADDITIONAL GD HUNGER"

The future of sound and vision.

Sefiice
(714511111211

ARP1776

STEREO AMPLIFIER

A-X450

A-X350 HE, HB, HEZ

A-X450 AND A~X350 HAVE FOLLOWING VERSIONS:

Applicable model
Type Power requirement Export destination
A-X450 A-XSSO
HE C O ACZZOV. 240V (switchable)* European continent
H8 0 o Aczzov, 240v (switchable)* United Kingdom
HEZ o o Aczzov, 240v (switchable) * West Germany

*Change the primary wiring of the power transformer.

.Refer to the service manual ARP1577, A~ X540, A~ X440/HE,
A- X340/HE.

.This manual is applicable to the A-X450/HE, HB, HEZ, A-X350/HE. HB and HEZ
types.

.The A-X450/HE, HB and HEZ types are the same as the A7X440/HE, HB and
HEZ types except for an appearance.

.The A-X350/HE, HB and HEZ types are the same as the A-X340/HE, HB and
HEZ types except for an appearance.

PIONEER ELECTRONIC CORPORATION 471. Meguro trChome, Meguro-ku Tokyo 153. Japan

PIONEER ELECTRONICS SERVICE INC. PO. Box 1760, Long Beach» Calllornia 90801 USA

PIONEER ELECTRONICS OF CANADA, INC. 505 Cochrane Dnve, Markham, Ontario LER 8E3 Canada

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

PIONEER ELECTRONICS AUSTRALIA PTY. LTD. 178484 Boundary Road, Braesnde Violona 3195 Australla TEL, [03] 58079911

© PIONEER ELECTRONIC CORPORATION 1939 W APR, 1989 mm in man

Page 2

A-X450/HE, HB, HEZ

1. FOR A-X450/HE, HB AND HEZ TYPES
1.1 CONTRAST 0F MISCELLANEOUS PARTS
NOTES:

- Parts without part number cannot be supplied,

- The A mark found on some component parts indicates the impotence of the safety factor of the part. Therefore, when

replacing. be sure to use parts of identical designation.

- Parts marked by 6)" are not always kept in stock. lheir delivery time may be longer than usual or they may be unavailable.

The A-X450/HE, HB and HEZ types are the same as the A-X440/HE type with

the exception of the following sections.

Part No.
Mark Symbol 84 Description A-X440 A-X450 A-X450 A-X450 Remarks
/HE type /HE type /HE type /HEZ type
AF main assembly AW21777 AW21777 AWZl 777 AW21787
SP assembly Non supply Non supply Non supply Non supply
HP assembly Non supply Non supply Non supply Non supply
FILTER assembly ------------------ Non supply
A; FU2 Fuse (T2A/250V) AEK~017 AEK-Ol7 ------ AEK--017
A FU1 Fuse (T2.5A/250V) AEKAOB AEK7403 ------ AEK-408
A FU2 Fuse (T2A/250V) ---------- AEK-511 ------
A FU1 Fuse (T2.5A/250V) ---------- AEK-51 2 ------
A AC socket (3P OUTLET) AKP-502 AKP-SOZ AKP-505 AKP-502
m AC Power cord ADG1021 ADGiOZi ADGeOSS ADGiOZ1
C1 Capacitor ------------------ CQMA473K250
Function knob AAD1382 M01564 AA01564 AA01564
*1 Leg assembly AMR1285 ------------------
*1 Insulator assembly ------ AMR1459 AMR1459 AMRi 459
*1 Screw ------ ABAlOSO AEA1050 AMR1050
Screw .................. ABA _ 1 1 5
Front panel ANB1227 AN81267 ANB1267 ANBi 267
Pad AHA1069 AHA1202 AHA1202 AHA1202
Packing case AHDlMS AH01649 AHDiB49 AHDiSAQ
Operating instructions ARE1081 ARE1 128 ------------
(English/French/German/ltalian/
Dutch/Swedish/Spanish/Portuguese)
Operating instructions (English) ----------- ARBi 181 ------
Operating instructions (German) --------------- ARCi 158

AF MAIN ASSEMBLY

A-X450/ HE, HB, HEZ

The AF main assembly (AWZ1787) is the same as the AF main assembly (AWZ1777)
with the exception of the following sections.

Part No.
Mark Symbol & Description Remarks
AWZi 777 AWZ1787
C103. 6104 CKMYB221K50 CKDY8331K5O
C107, C108 CKMY8221K5O CKCYBBQiKSO
C801~0816 """ CKDY8391 K50
R101. R102 RDAPM331J RD'/.PM152.J
R119-R124, R127. R128. R131, R132 RDViPM471J RDMPMiOZJ

SP ASSEMBLY

The SP assembly (for A-X450/HEZ type) is the same as the SP assembly (for
A-X440/HE, A-X450/HE and HB types) with the exception of the following

sections.
Part No.
Mark Symbol & Description A7X440/HE Remarks
A-X450/HE and HB types MW/HEZ We
(3817 - C820 CKDY8391 K50
C837. (3838 CKDYB331K50
0839-C842 CQMA103K50
L801 -L804 AF choke coil ATH-133
R1-R4 RDAPM4R7J
R403. R404 RDAPM471J RDVaPMlOZJ

*1 ;ln A~X450. the insulator assembly is attached instead of the leg assembly in A-XMO

:l' '
/

\

8 (5 Chassis
@\

|
é ScrewiAEAiOSOl

Insulator assemblyiAMRMSS)

HP ASSEMBLY

The HP assembly (for A~X450/HEZ type) is the same as the HP assembly (for
A-X440/HE, A-X450/HE and HB types) with the exception of the following

sections.

Mark Symbol & Description

Part No.

A-X440/HE.
AsX450/HE and H8 types

A- X450/HEZ type

Remarks

0843. 0844

CQMA472K50