Marantz SC 7 S 1 Service Manual

Page 1

Service
Manual

SC7S1 /F1N/N1G/U1G

Stereo Control Amplifier

SECTION PAGE
1. TECHNICAL SPECIFICATIONS ........................................................................... 1
2 BLOCK DIAGRAM ........... .. 3
3. SCHEMATIC DIAGRAM .. 5
4. PARTS LOCATION .......... 13
5. IC DATA ................................................ 19
6. EXPLODED VIEW AND PARTS LIST 23
7. SERVICE MODE .................................. 26
8. BUS SPECIFICATIONS ...... 30
9. ELECTRICAL PARTS LIST . i 38

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TABLE OF CONTENTS

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

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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.

7 USA - 7 EUROPE / TRADING - 7 CANADA
MARANTz AMERICA,INc MARANTz EUROPE B.V. LENBROOKINDUSTRIES LIMITED
1100 MAPLEWOOD DRIVE P. O. BOX 6744, BUILDING SILVERPOINT 636 GRANITE COURT,
ITASCA, IL. 60143 BEEMDSTFIAAT 11.5653 MA EINDHOVEN PICKERING, ONTARIO L1W 3K1
USA THE NETHERLANDS CANADA
PHONE : 660 . 741 . 0300 PHONE : +31 - 40 . 2507844 PHONE : 905 . 831 . 6333
FAX : 630 . 741 . 0301 FAX : +31 . 40 - 2507860 FAX : 905 . 831 . 6936

- PROFESSIUNAL AMERICAS - TPNDFESSIUNAL AUSTRALIA 7 T PnDFESSIflNAl HONG KONG 7
SUPERSCOPE TECHNOLOGIES, INC. TECHNICAL AUDIO GROUP PTv, LTD Jolly ProAudio Broadcast Engineering Lid.
MARANTZ PROFESSIONAL PRODUCTS 4353 Bridge Rd., UNIT 2, 10F, WAH HUNG CENTRE,
2640 WHITE OAK CIRCLE, SUITE A STANMORE NSW 2046 41 HUNG TO ROAD, KWUN TONG, KLN.,
AURORA, ILLINOIS 60504 USA AUSTRALIA HONG KONG
PHONE : 660 . 620 . 4800 PHONE : +61 . (0)2 . 9519 . 0900 PHONE : 852 . 21913660
FAX : 630 . 620 . 6103 FAX : +61 . (0)2 . 9519 . 0600 FAX : 852 . 21913990

7 AUSTRALIA - - THAILAND - - SINGAPORE -
QualiFi PIy Ltd, MRZ STANDARD CO., LTD wo KEE HONG DISTRIBUTION PTE LTD
24 LIONEL ROAD, 746 . 754 MAHACHAI ROAD. 130 J00 SENG ROAD
MT. WAVEFILEY VIC 3149 WANGBURAPAPIROM. PHRANAKORN. #03702 OLIVINE BUILDING
AUSTRALIA BANGKOK, 10200 THAILAND SINGAPORE 366357
PHONE : +61 . (0)3 . 9543 . 1522 PHONE : +66 . 2 . 222 9181 PHONE : +65 6658 5535 / +65 6661 6621
FAX : +61 . (0)3 . 9543 . 3677 FAX : +66 . 2 . 224 6795 FAX :+65 6658 6076

7 NEW ZEALAND 7 TAIWAN - 7 MALAYSIA
WILDASH AUDIO SVSTEMS NZ PAI- YUING CO., LTD. wo KEE HONG ELECTRONICS SDN. BHD.
14 MALVERN ROAD MT ALBERT 6 TH FL NO, 146 SUNG KIANG ROAD, 2ND FLOOR BANGUNAN INFINITE CENTRE
AUCKLAND NEw ZEALAND TAIPEI, 10429, TAIWAN R.O.C. LOT 1, JALAN 13/6, 46200 PETALING JAYA
PHONE :+64 . 9 . 8451958 PHONE : +866 . 2 . 25221304 SELANGOR DARUL EHSAN, MALAYSIA
FAX : +64 . 9 . 8463554 FAX : +866 . 2 . 25630415 PHONE : +60 . a . 7954 6088

FAX : +60 . 3 . 7954 7068

7 JAPAN Technical - KOREA
MARANTZ JAPAN, INc. E| x V 5 y \y $5? 3% g $1 MK ENTERPRISES LTD.
35 1, 7+ CHOME, SAGAMIONO ROOM 604/605, ELECTROVOFFICETEL, 16758,
SAGAMIHAHA 7 SHI, KANAGAWA 3GA, HANGANGVRO, YONGSANVKU, SEOUL
JAPAN 288505 7f: ti T228-6505 KOREA
PHONE : +81 42 748 1013 26%llfitfitélfirfitatéflirssm pHONE 3322 . 3252 .155
FAX :+81 42 741 9190 FAX 3322 . 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 No. 1492.

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

030307MIT