Marantz SR-480 Service Manual

MARANTZ DESIGN AND SERVICE

Service

74SR480/01B/02B

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 CANADA EUROPE / TRADING

MARANTZ AMERICA, INC.

440 MEDINAH ROAD ROSELLE, ILLINOIS 60172 USA PHONE : 630 - 307 - 3100 FAX : 630 - 307 - 2687

USA

SUPERSCOPE TECHNOLOGIES, INC.

MARANTZ PROFESSIONAL PRODUCTS 2640 WHITE OAK CIRCLE, SUITE A AURORA, ILLINOIS 60504 USA PHONE : 630 - 820 - 4800 FAX : 630 - 820 - 8103

LENBROOK INDUSTRIES LIMITED

633 GRANITE COURT, PICKERING, ONTARIO L1W 3K1 CANADA PHONE : 905 - 831 - 6333 FAX : 905 - 831 - 6936

TC ELECTRONICS CANADA LTD.

540 FIRING AVE. BAIE DíURF…, QUEBEC H9X 3T2 CANADA PHONE : 514 - 457 - 4044 FAX : 514 - 457 - 5524

MARANTZ EUROPE B. V.

P.O.BOX 80002 BUILDING SFF2 5600 JB EINDHOVEN THE NETHERLANDS PHONE : +31 - 40 - 2732241 FAX : +31 - 40 - 2735578

KOREACANADA

MK ENTERPRISES LTD.

2F SHINHAN BLDG., 247-17 SEOKYO-DONG MAPO-KU, SEOUL KOREA PHONE : +82 - 2 - 323 - 2155 FAX : +82 - 2 - 323 - 2154

Manual

SR480

PM488AV

SR480U

Audio/Video receiver

Audio/Video Integrated amplifier

74PM488AV/02B

BRAZIL

MARANTZ BRAZIL

CAIXA POSTAL 21462 CEP 04698-970 SAO PAULO, SP, BRAZIL PHONE : 0800 - 123123 FAX : +55 11 534. 8988

AUSTRALIA / NEW ZEALAND

SCAN AUDIO PTY. LTD.

52 CROWN STREET, RICHMOND 3121 VICTORIA AUSTRALIA PHONE : +61 - 3 - 9429 - 2199 FAX : +61 - 3 - 9429 - 9309

JAPAN

MARANTZ JAPAN, INC.

35- I , 7- CHOME, SAGAMIONO SAGAMIHARA - SHI, KANAGAWA JAPAN 228-8505 PHONE : +81 42 748 1013 FAX : +81 42 741 9190

Technical

(Discagem Direta Gratuita)

THAILAND

MRZ STANDARD CO., LTD.

746 - 754 MAHACHAI RD., WANGBURAPAPIROM, PHRANAKORN, BANGKOK, 10200 THAILAND PHONE : +66 - 2 - 222 - 9181 FAX : +66 - 2 - 224 - 6795

TAIWAN

PAl- YUING CO., LTD.

6 TH FL NO, 148 SUNG KIANG ROAD, TAIPEI, 10429, TAIWAN R.O.C. PHONE : +886 (2) 5221304 FAX : +886 (2) 5630415

MALAYSIA

WO 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

SINGAPORE

FORWARD MARKETING (S) PTE. LTD.

23, LORONG 8, TOA PAYOH, SINGAPORE 319257. PHONE : +65 2583640 FAX : +65 3564047

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.

TABLE OF CONTENTS

SECTION PAGE

1. TECHNICAL SPECIFICATIONS (SR480) ...................................................................................................... 1

2. TECHNICAL SPECIFICATIONS (PM488AV) ................................................................................................. 2

3. BLOCK DIAGRAM .......................................................................................................................................... 3

4. WIRING DIAGRAM......................................................................................................................................... 5

5. SCHEMATIC DIAGRAM AND PARTS LOCATION (Parts Side) .................................................................... 7

6. COMPONENT DESCRIPTIONS................................................................................................................... 36

7. ALIGNMENT PROCEDURES....................................................................................................................... 40

8. EXPLODED VIEW AND PARTS LIST (SR480)............................................................................................ 43

9. EXPLODED VIEW AND PARTS LIST (PM488AV) ...................................................................................... 47

10. ELECTRICAL PARTS LIST .......................................................................................................................... 49

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

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

981110A.O

Printed in Japan

model SR480/PM488AV

4822 725 51191 First Issue:1999.03 237W855010 AO

1. TECHNICAL SPECIFICATION (SR480)

2. TECHNICAL SPECIFICATION (PM488AV)

FM Tuner Section

Frequency Range .........................................................................................................................87.5 - 108.0 MHz

Usable Sensitivity....................................................................................................................IHF 0.9 µV / 10.8 dBf

Signal to Noise Ratio .......................................................................................................Mono / Stereo 0.2 / 0.5 %

Distortion ..........................................................................................................................Mono / Stereo 0.2 / 0.5 %

Stereo Separation .................................................................................................................U version 1 kHz 48 dB

/01B/02B version 1 kHz 45 dB

A.C.S..............................................................................................................................................± 400 kHz 55 dB

Image Rejection .................................................................................................................................98 MHz 50 dB

Tuner Output level......................................................................................U version 1 kHz, ± 75 kHz Dev 940 mV

/01B/02B version 1 kHz, ± 40 kHz Dev 500 mV

AM Tuner Section

Frequency ........................................................................................................................U version 520 - 1710 kHz

/01B/02B version 522 - 1611 kHz

Usable Sensitivity...........................................................................................................................Loop 500 µV / m

Signal to Noise Ratio ...................................................................................................................................... 50 dB

Distortion ............................................................................................................................ 1 kHz, 30 % Mod. 0.5 %

Selectivity .........................................................................................................................U version ± 20 kHz 70 dB

/01B/02B version ± 10 kHz 25 dB

Audio Section

Rated Power ( 5 ch drive )

Front................................................................................................................. 20 Hz - 20 kHz 8 ohms 50 W / ch

Center ................................................................................................................................... 1 kHz 8 ohms 50 W

Surround ......................................................................................................................... 1 kHz 8 ohms 50 W / ch

THD Front .................................................................................................................20 Hz - 20 kHz 8 ohms 0.09%

Input Sensitivity / Imedance

Linear .................................................................................................................................... 200 mV / 47 k ohms

Signal to Noise Ratio ( IHF A )

Linear ........................................................................................................................................................... 92 dB

Audio Section

Rated Power ( 5 ch drive )

Front................................................................................................................. 20 Hz - 20 kHz 8 ohms 50 W / ch

Center ................................................................................................................................... 1 kHz 8 ohms 50 W

Surround ......................................................................................................................... 1 kHz 8 ohms 50 W / ch

THD Front .................................................................................................................20 Hz - 20 kHz 8 ohms 0.09%

Input Sensitivity / Imedance

Linear .................................................................................................................................... 200 mV / 47 k ohms

Signal to Noise Ratio ( IHF A )

Linear ........................................................................................................................................................... 92 dB

Video Section

Input / Output Level / Impedance................................................................................................ 1.0 V

p-p / 75 ohms

Others

Power Supply ....................................................................................................................... 115 / 230 V, 50 / 60 Hz

Power Consumption....................................................................................................................................... 280 W

Dimensions ( MAX )

Width ............................................................................................................................. 17 - 1/4 inches ( 440 mm )

Height.......................................................................................................................................6 inches ( 153 mm )

Depth............................................................................................................................. 16 - 1/2 inches ( 420 mm )

Weight ...............................................................................................................................................31 lbs ( 14 kg )

Specifications subject to change without prior notice.