Marantz SR 14 A Service Manual

Page 2

MARANTZ DESIGN AND SERVICE

Using superior design and selected high grade components, MARANTZ company has created the Ultimate in stereo sound.
Only original MARANH parts can insure that your MARANTZ product will continue to pertorm to the specifications ior which
it is famous.

Parts Ior 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 pan 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, omerwise such part order will be considered as null and void.

- USA --- - EUROPE/TRADING W E BRAZIL fi-Wfi
MARANTZ AMERICA, INC. MARANTZ EUROPE B.V. PHILIPS DA AMAZONIA IND. ELEI'. ITDA
M0 MEDINAH ROAD P osox 50002, BUILDING SFFZ CENTRO DE INFORMACOES AO
FtOSELLE. ILLINOIS 60172 5600 JB EINDHOVEN CEP 04590-970
USA THE NETHERLANDS 5A0 PAULO. SP. BRAZIL
PHONE : 680 - 307- 3100 PHONE +31 - 40- 2732241 PHONE .- 0500 - 123123IDIscagem DIretsGrntUite)
FAX ; 630 - 307 - 2657 FAX : +31 - 40 - 2735578 FAX : +55 11 534. 8988

- PBDFESSIUNAL AMERICAS - ._ P'UFESIDNJL AUSTRALIA - T CANADA
SUPERSOOPE TECHNOLOGIES. INC. TECHNICAL AUDIO GROUP PTY, LTD LENBROOK INDUSTRIES LIMITED
MARANIZ PROFESSIONAL PRODUCTS 555 DARLING STREET, 552 GRANITE COURT,

2040 WHITE OAK CIRCLE, SUITE A BALMAIN, NSW 2041, PICKERING, ONTARIO L1w 3m
AURORA, ILLINOIS 50504 USA AUSTRALIA CANADA

PHONE : 530 - 020 - 4300 PHONE : 6t - 2 - 9510 - 5300 PHONE : 905 - 831 - 6333

FAX :630~520-BI03 FAX 6I >2»9810-5355 FAX .QOS-BSI -6936

I- AUSTRALIA __-._- - THAILAND - - SINGAPORE -
QUIIIFI Fty Lid. MR7. STANDARD OO.,LTD W0 KEE HUNG DISTRIBUTION PTE LTD
24 LIONEL ROAD. 746 , 754 MAHAOHAI ROAD. 130 JOO SENG ROAD

MT. WAVEFILEY VIC 3149 WANGBURAPAPIROM, PHRANAKORN, 003-02 OLIVINE BUILDING
AUSTRALIA BANGKOK, I0200 THAILAND SINGAPORE 303357

PHONE ; +01 , (0)3 » 9543 -1522 PHONE - +55 » 2 » 222 9151 PHONE . +05 856 5535 / 55 551 0521
FAX : +61 - (0)3 - 9543 - 3677 FAX : +55 - 2 - 224 5795 FAX : +05 555 5075

TV NEW ZEALAND -- - TAIWAN - - MALAYSIA

WIIDASH AUDIO SYSTEMS NZ PAI- YUING 00.. LTD. W0 KEE NONG ELECTRONICS SDN. END.

14 MALVERN ROAD MT ALBERT 5 TH FL NO, 148 SUNG KIANG ROAD, SUITE 3.1. LEVEL 8. MENARA GENESIS.
AUCKLAND NEW ZEALAND TAIPEI, 10429. TAIWAN R,O.C. NO. 33. JALAN SULTAN ISMAIL,
PHONE n54 , 9 - 3451958 PHONE ; +836 , 2 ~ 25221304 50250 KUALA LUMPUR. MALAYSIA
FAX -+64 - s - 5453554 FAX :4886 » 2 - 25630415 PHONE . +50 5 - 2457577
FAX :+60 3 - 2458180

- JAPAN Technical - KOREA
MARANTZ JAPAN. me. E 2: \7 5 J 1y If it 2 H MK ENTERPRISEs LTD.

35- 1, 7. CHOME, SAGAMIONO a: ti 725 5505 ROOM senses. ELECTRO-OFFICETEL 16558.
SAGAMIHARA - SHI. KANAGAWA r ' 36A, HANGANG-RO. VONGSANEKU, SEOUL
JAPAN 220-5505 ESKIS 113% i IRWEEEEXEY-as-I KOREA

PHONE ; +51 42 7431013 a T150002? PHONE: +02273232 , 155

FAX . +51 42 741 9190 iisflfiezéttfifinns FAX , +322 , 5232- 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 tace or Front Panel of product and
controls and chassis bottom.

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

Ref. UL Standard NO. 1492.

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

001120MIT

Page 39

9. ELECTRICAL ADJUSTMENTS

1. Dc offset adjustment

Master Volume :Minimum, Speaker out : non Load

Ad' stment
Step Power Channel 5:0 Test Point Adjustment Vaule

Front L H715

Esme: ,,,,F1U§, S k 0 , m

1 on Front Ft FtPtG pea er. p : zomv

' * W Terrmnai

Surr. L RP15

Surr. R H716

Note : It the measured value is not exceed :ZOmV, no need to adjust the DC 011591.

2. lding current adjustment

MasterVolume : Minimum, Speaker out : non Load

Step Power

Channel

Adjustment
Point

Test Point

Adjustment

Vaute

Front _L__ H743

I J713 or R773

Center FtT43 ma or RT73 within 1 minute
1 POWEI on 7 ' ""'"" """T'TWTiifi

Front Ft FtP44 m qPQ4 orEtP774 , , 0.4mV

Surre L RP43 7.7171303 orm ,.

Surr. R R744 J714 or R774

.J'":4P Connecter see table
2 am" [between 1 .4 ) for adjustment
4minutes p p

R'":Emitter Resister
[0.1nx 2 (0.18:2 x2)]

vaule

Time since power on idling current adjust. Time since power on Idling current adjust.
4-4 minutes 30 seconds 5,6mV 11-12 minutes 8.0mV
4m305-5 minutes 6.4mV 12-14 minutes 7.6mV

5-5 minutes 30 seconds 7.2mV 1446 minutes 7.2mV
Emacs-6 minutes 7.7mV 16-18 minutes 6.5mV

6-7 minutes 8.2mV 18-22 minutes 5.6mV

7-8 minutes 8.6mv 22-26 minutes 4.9mV

8-9 minutes 8.8mV 2660 minutes 4.4mV

9-10 minutes 8.6mV more than 30 minutes 4.0mV

10-11 minutes 5.4mv The taget is 4.0mV

a. Thermostat circuit confirmation
1) When the product is POWER ON, remove the wire W701 from the connedor J715 (P704).
2) FLD shows "ERROR PWR1".
3) Confirm the product is POWER OFF after 3 seconds.
4) Connect the wire W701 to the connector J715 (on P704).
5) Confirm the product is standby status.

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