Marantz SR 18 Service Manual

Page 1

Service SR-18 u, K, KS
M a n U a I AV Surround Receiver

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TABLE OF CONTENTS
SECTION PAGE
1 TECHNICAL SPECIFICATIONS ................................................................................................................. 1
2. WIRING DIAGRAM
3. BLOCK DIAGRAM....
4. SCHEMATIC DIAGRAM .. 7
5i PARTS LOCATION (Pattern Side) ............................................................................................................ 25
6. IC DATA ............................................... 45
7. EXPLODED VIEW AND PARTS LIST.. . 53
8. SERVICE PROGRAM .......................... 57
9. ELECTRICAL ADJUSTMENTS ................................................................................................................. 59
10 ALIGNMENT PROCEDURES 61
11. TROUBLE SHOOTING .......... 63
12. TECHNICAL DESCRIPTION FOR DECODER ......................................................................................... 66
13. ELECTRICAL PARTS LIST ....................................................................................................................... 68

Please use this service manual with referring to the user guide (D.FAU) without fail.

maranll®

model SR-18

Printed in Japan 300J855010 MIT

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MARANTZ DESIGN AND SERVICE

Using superior design and selected high grade components, MARANTZ company has created the ultimate in stereo sound.
Only original 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 either by mail or by Fax.. In both cases. the correct part number has to be specified.
The following information must be supplied to eliminate delays in processing your order :

1. Complete address

2. Complete part numbers and quantities required

3. Description of parts

4. Model number for which part is required

5. Way of shipment

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

- USA

MARANTZ AMERICA, INC.
440 MEDINAH ROAD
ROSELLE, ILLINOIS 60172
USA

PHONE : 630 , 307 , 3100

- EUROPE / TRADING
MARANTZ EUROPE B.V.
P.O.BOX 80002, BUILDING SFF2
5600 JB EINDHOVEN

THE NETHERLANDS

PHONE : +31 , 40 , 2732241

BRAZIL
MARANTZ BRAZIL
CAIXA POSTAL 21462
CEP 046987970
SAO PAULO, SP, BRAZIL
PHONE : 0800 , 123123(Discagem Direta Gratulta)

SCAN AUDIO PTY. LTD.

52 CROWN STREET, RICHMOND 3121
VICTORIA

AUSTRALIA

PHONE : +61 , 3 , 9429 , 2199

FAX : +61 , 3 , 9429 , 9309

MRZ STANDARD CO..LTD

746 , 754 MAHACHAI ROAD.,
WANGBURAPAPIROM, PHRANAKORN,
BANGKOK, 10200 THAILAND

PHONE : +66 , 2 , 222 9181

FAX : +66 , 2 , 224 6795

FAX : 630 , 307 , 2687 FAX : +31 , 40 , 2735578 FAX : +55 11 534. 8988
, PnnFESSIUNl AMERICAS i 7 CANADA

SUPERSCOPE TECHNOLOGIES, INC. LENBROOK INDUSTRIES LIMITED

MARANTZ PROFESSIONAL PRODUCTS 633 GRANITE COURT,

2640 WHITE OAK CIRCLE, SUITE A PICKERING, ONTARIO L1W 3K1

AURORA, ILLINOIS 60504 USA CANADA

PHONE : 630 , 820 , 4800 PHONE : 905 , 831 , 6333

FAX : 630 , 820 , 8103 FAX : 905 , 831 , 6936
7 AUSTRALIA - THAILAND - SINGAPORE

WO KEE HONG (S) PTE LTD
WO KEE HONG CENTRE
No.23, LORONG 8. TOA PAYOH
SINGAPORE 319257

PHONE : +65 2544555

FAX : +65 2502213

7 NEW ZEALAND

SCAN AUDIO PTY. LTD.

8C PIERMARK DRIVE, ALBANY.
NORTH SHORE, AUCKLAND.
NEW ZEALAND

PHONE : +64 , 9444 , 4710

FAX : +64 , 9444 , 1346

7 TAIWAN

PAI- YUING 60.. LTD.

6 TH FL NO, 148 SUNG KIANG ROAD,
TAIPEI, 10429, TAIWAN R.O.C.
PHONE : +886 , 2 , 25221304

FAX : +886 , 2 , 25630415

7 MALAYSIA -
W0 KEE HONG ELECTRONICS SDN. BHD.
NO. 102 JALAN SS 21/35, DAMANSARA
UTAMA, 47400 PETALING JAYA
SELANGOR DARUL EHSAN, MALAYSIA
PHONE : +60 3 , 7184666

FAX : +60 3 , 7173828

7 JAPAN Technical
MARANTZ JAPAN, INC.
3571,7VCHOME,SAGAMIONO
SAGAMIHARA . SHI, KANAGAWA
JAPAN 223.3505

PHONE : +31 42 7481013

FAX :+81 42 74s 9190

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- KOREA

MK ENTERPRISES LTD.

ROOM 604/605, ELECTROVOFFICETEL, 16758,
SGA, HANGANGVRO, YONGSANVKU, SEOUL
KOREA

PHONE : +822 , 3232 , 155

FAX : +822 , 3232 , 154

SHOCK, FIRE HAZARD SERVICE TEST :

CAUTION : After servicing this appliance and prior to returning to customer, measure the resistance between either primary AC
cord connector pins ( with unit NOT connected to AC mains and its Power switch ON ), and the face or Front Panel of product and
controls and chassis bottom.

Any resistance measurement less than 1 Megohms should cause unit to be repaired or corrected before AC power is applied, and
verified before it is return to the user/customer.

Ref. UL Standard N0. 1492.

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

990518MIT