Marantz SR 390 Service Manual

Page 1

39 W I C9 74SR390/023
M a n u SI AudioNideo receiver

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TABLE OF CONTENTS

SECTION PAG E

1.
. WIRING DIAGRAM .
. BLOCK DIAGRAM...
. SCHEMATIC DIAGRAM AND PARTS LOCATIONS
. MICROPROCESSOR DESCRIPTIONS .....
. MEASUREMENTS AND ADJUSTMENTS .
. EXPLODED VIEW AND PARTS LIST ........

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TECHNICAL SPECIFICATIONS ................................................................................................................. 1

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

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model SR390

4822 725 51188
Fini Issue:1999.02
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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 lor which

it is Iamous.

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 intcrmation 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. othenNise such part order will be considered as null and void.

MARANTZ AMERICA, INC.
440 MEDINAH ROAD
ROSELLE, ILLINOIS 50172
USA

PHONE :630- 307 - 3100
FAX :630 - 307 - 2667

'USA -'-'-"

- CANADA

LENBROOK INDUSTRIES LIMITED
633 GRANITE COURT.

PICKERING, ONTARIO L1W 3K1
CANADA

PHONE : 905 - 831 - 6333

FAX :905 - 831 . 6936

- EUROPE l TRADING

MARANTZ EUROPE B. V.
ROBOX 80002

BUILDING SFF2

5600 JB EINDHOVEN

THE NETHERLANDS
PHONE : +31 - 4O - 2732241

FAX : +31 - 4O - 2735578

-PROFEISION£ CANADA - KOREA

TC ELECTRONICS CANADA LTD. MK ENTERPRISES LTD.

MARANTZ PROFESSIONAL PRODUCTS 540 FIRING AVE. 2F SHINHAN BLDG,. 24747 SEOKYO-DONG
2640 WHITE OAK CIRCLE. SUITE A BAIE prune... QUEBEC Hex 3T2 MAPO-KU. SEOUL

AURORA. ILLINOIS 60504 USA CANADA KOREA

PHONE : 630- 920 - 4300 PHONE : 514 - 457 - 4044 PHONE : +52 - 2 - 323 - 2155

FAX :630-320-3103 FAX :514-457-5524 FAX :+82-2 423.2154

- PROFESSIDMI. USA
SUPERSCOPE TECHNOLOGIES. INC.

"BRAZIL - 'THAILAND

MARANTI BRAZIL MR2 STANDARD CO., LTD.

CAIXA POSTAL 21462 746 - 754 MAHACHAI RD.,

CEP 04698-970 WANGBURAPAPIROM. PHRANAKORN,
SAO PAULO. SP. BRAZIL BANGKOK. 10200 THAILAND

PHONE : 0800 -123123IniswgemDirolaGramitai PHONE : +66 » 2 - 222 - 9181

FAX : +5511 534. 8988 FAX : +66 - 2 - 224 - E795

- AUSTRALIA / NEW ZEALAND _-- 'TAIWAN

SCAN AUDIO PTY. LTD. PAI- VUING C0., LTD.
52 CROWN STREET, RICHMOND 3121 6 TH FL NO. 146 SUNG KIANG ROAD.

' MALAYSIA

W0 KEE HONG ELECTRONICS SDN. BHD.
NO. 102 JALAN SS 21/35. DAMANSARA

VICTORIA TAIPEI. 10429. TAIWAN R.O.C. UTAMA. 47600 PETALING JAVA
AUSTRALIA PHONE : +886 (2) 5221304 SELANGOR DARUL EHSAN,
PHONE :+61- 3 - 9429 » 2199 FAX HERE (2) 5630415 MALAYSIA

FAX : +61 . 3 - 9429 - 9309 PHONE : +60 3 - 7184666

FAX : +60 3 - 7173528

- SINGAPORE

B 15 V 5 J 3 1% i: g TI FORWARD MARKETING (5) PTE. LTD.
23. LORONG s, TOA PAYOH,

- JAPAN Technical

MARANTZ JAPAN. INC.
35- | , 7- CHOME. SAGAMIONO

SAGAMIHARA - SHI, KANAGAWA 2: #1 rzzs-asos SINGAPORE 319257.
JAPAN 228-8505 filllmfillfifiteuxsms-I PHONE : +65 2583640
PHONE : +8142 7481013 ggzgu $230022 FAX : o65 3564047

FAX :+81427419190

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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 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, aid
verified before it is return to the user/customer.

Flef. UL Standard No. 1492.

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

981110A.I