Marantz MA 500 Service Manual

Page 1

Service MA500U/K/F
M an uaI Mono Amplifier

TABLE OF CONTENTS
SECTION PAGE

, TECHNICAL SPECIFICATIONS
, TEST EQUIPMENT REQUIRED FOR SERVICING '
. IDLING CURRENT ADJUSTMENT '
. BLOCK DIAGRAM
V SCHEMATIC DIAGRAM '
A CIRCUIT BOARD DIAGRAM *
. EXPLODED VIEW AND PARTS LIST '
ELECTRICAL PARTS LIST

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m a I. a I 1 ®
model MA500

Primed in Japan 176J855190 ACT

Firsl issue ; 1993

Page 2

MARANTZ DESIGN AND SERVICE

Using superior design and selected high grade
components, MARANTZ company has created the
ultimate in stereo sound.

Only origin-l MARANTZ parts can insure that your
MARANTZ product will continue to perform to the
specifications for which it is famous.

Parts for your MARANTZ equipment are generally
available to our National Marantz Subsidiary or Agent.

ORDERING PARTS:

Parts can be ordered elther by mail or by telex. in both

cases. correct part number has to be specified.

The following information must be supplied to eliminate

delays in processing your order:

1. Complete address

. Complete part numbers and quantities required

Description of parts

. Model number for which part is required

. Way of shipment

. Signature: any order form or telex must be signed
otherwise such part order will be considered as null
and void.

away»

MARANIZ EUROPE B.V.

Vesidijk 9

5600 MD Eindhoven

The Netherlands

Phone : +31-40-758290

Fax : 43140-758299

Telex : 35000 PHTC NL routing ind.

MARANTZ USA

1150 FEEHANVILLE DR.

flgUNT PROSPECT, ILLNOIS 60055
. .A.

PHONE: 8006646633

FAX; 7052994005

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SHOCK, FIRE HAZARD SERVICE TEST:

CAUTION: After servicing this appliance and prior to
returning to customer, measure the resistance between
either orirnarv AC cord connector pins (with unit NOT
connected to AC mains and its Power switch 0N), and the
faceor Front Panel of product and controls and chassis

bottom.

Any resistance measurement less than 1 Megohrns should
cause unit to be reparied or corrected before AC power is

applied, and verified before return to user/customer.

Ref. UL Standard NO. 1270. Para 74. 3. D (Mandatory
Test after servicing Electrical Appliances, effective

7-1-83).

In case of difficulties, do not hesitate to contact the Technical
Department at ebovementioned address.