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Service MA6100 /N1G, /U1G
/N1B, /U1B
Manual Mono Power Amplifier
MONO POWER AMPLIFIER MA6100
BLUE : POWER ON
MA6100
RED : STANDBY
POWER ON/OFF
TABLE OF CONTENTS
SECTION PAGE
1. TECHNICAL SPECIFICATIONS ................................................................................................................. 1
2. IC DATA ...................................................................................................................................................... 1
3. BLOCK DIAGRAM ....................................................................................................................................... 2
4. TEST EQUIPMENT REQUIRED FOR SERVICING .................................................................................... 2
5. SCHEMATIC DIAGRAM AND PARTS LOCATION (Pattern Side) ............................................................. 3
6. EXPLODED VIEW AND PARTS LIST ......................................................................................................... 7
7. POWER AMP. ALIGNMENT ..................................................................................................................... 10
8. ELECTRICAL PARTS LIST ....................................................................................................................... 11
Please use this service manual with referring to the user guide ( D.F.U. ) without fail.
R
MA6100 329J855010 MIT
3120 785 22380
Printed in Japan First Issue 2000.07
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 EUROPE / TRADING BRAZIL
MARANTZ AMERICA, INC INC. MARANTZ EUROPE B.V. PHILIP DA AMAZONIA IND. ELET. ITDA
440 MEDINAH ROAD P.O.BOX 80002, BUILDING SFF2 CENTRO DE INFORMACOES AO
ROSELLE, ILLINOIS 60172 5600 JB EINDHOVEN CEP 04698-970
USA THE NETHERLANDS SAO PAULO, SP, BRAZIL
PHONE : 630 - 307 - 3100 PHONE : +31 - 40 - 2732241 PHONE : 0800 - 123123(Discagem Direta Gratuita)
FAX : 630 - 307 - 2687 FAX : +31 - 40 - 2735578 FAX : +55 11 534. 8988
AMERICAS AUSTRALIA CANADA
SUPERSCOPE TECHNOLOGIES, INC. TECHNICAL AUDIO GROUP PTY, LTD LENBROOK INDUSTRIES LIMITED
MARANTZ PROFESSIONAL PRODUCTS 558 DARLING STREET, 633 GRANITE COURT,
2640 WHITE OAK CIRCLE, SUITE A BALMAIN, NSW 2041, PICKERING, ONTARIO L1W 3K1
AURORA, ILLINOIS 60504 USA AUSTRALIA CANADA
PHONE : 630 - 820 - 4800 PHONE : 61 - 2 - 9810 - 5300 PHONE : 905 - 831 - 6333
FAX : 630 - 820 - 8103 FAX : 61 - 2 - 9810 - 5355 FAX : 905 - 831 - 6936
AUSTRALIA THAILAND SINGAPORE
JAMO AUSTRALIA PTY LTD MRZ STANDARD CO.,LTD WO KEE HONG (S) PTE LTD
1 EXPO COURT, P.O. BOX 350 746 - 754 MAHACHAI ROAD., WO KEE HONG CENTRE
MT. WAVERLEY VIC 3149 WANGBURAPAPIROM, PHRANAKORN, NO.23, LORONG 8, TOA PAYOH
AUSTRALIA BANGKOK, 10200 THAILAND SINGAPORE 319257
PHONE : +61 - 3 - 9543 - 1522 PHONE : +66 - 2 - 222 9181 PHONE : +65 2544555
FAX : +61 - 3 - 9543 - 3677 FAX : +66 - 2 - 224 6795 FAX : +65 2502213
NEW ZEALAND TAIWAN MALAYSIA
WILDASH AUDIO SYSTEMS NZ PAI- YUING CO., LTD. WO KEE HONG ELECTRONICS SDN. BHD.
14 MALVERN ROAD MT ALBERT 6 TH FL NO, 148 SUNG KIANG ROAD, SUITE 8.1, LEVEL 8, MENARA GENESIS,
AUCKLAND NEW ZEALAND TAIPEI, 10429, TAIWAN R.O.C. NO. 33, JALAN SULTAN ISMAIL,
PHONE : +64 - 9 - 8451958 PHONE : +886 - 2 - 25221304 50250 KUALA LUMPUR, MALAYSIA
FAX : +64 - 9 - 8463554 FAX : +886 - 2 - 25630415 PHONE : +60 3 - 2457677
FAX : +60 3 - 2458180
JAPAN Technical KOREA
MARANTZ JAPAN, INC. MK ENTERPRISES LTD.
35- 1, 7- CHOME, SAGAMIONO ROOM 604/605, ELECTRO-OFFICETEL, 16-58,
SAGAMIHARA - SHI, KANAGAWA 3GA, HANGANG-RO, YONGSAN-KU, SEOUL
JAPAN 228-8505 KOREA
PHONE : +81 42 748 1013 PHONE : +822 - 3232 - 155
FAX : +81 42 741 9190 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 No. 1492.
In case of difficulties, do not hesitate to contact the Technical
Department at above mentioned address.
991207MIT
1. TECHNICAL SPECIFICATIONS 3. BLOCK DIAGRAM
Rated power output
(20 Hz to 20 kHz, 8 load) ................................... 125 W
MAIN AMP
Total harmonic distortion
(20 Hz to 20 kHz, 8 load) .................................. 0.02 % INPUT +29.0dB SPK OUT
Output bandwidth (8 load, 0.04 %) ........... 10 Hz to 50 kHz
INVERT OUTPUT
Frequency response ................... 10 Hz to 70 kHz, +0 / -1 dB
MAIN TRANSF.
Damping factor (8 load, 1 kHz) ....................................... 60
PROTECTOR
DRIVE +15V
S/N (IHF A network, input shorted) ............................. 110 dB -15V
+B
EXT.CONT.IN -B
Supply voltage [/N] ...................................... 230 V AC, 50 Hz
[/U] ...................................... 120 V AC, 60 Hz
SUB TRANSF.
Power consumption [/N] ................................................ 200 W
(Stand-by) 1 W +5V
+24V
[/U] ............................................... 230 W REMOTE CONT.IN
(Stand-by) 2.5 W REMOTE CONT.OUT
Dimensions
AC OUTLET
Width ...................................................................... 88 mm µ-COM
TMP47C201P
Height ................................................................... 146 mm
Depth .................................................................... 470 mm
Weight ........................................................................... 5.7 kg
POWER SW
Design and specifications are subject to change without notice.
STANDBY
POWER
MAINS CORD
2.IC DATA 4. TEST EQUIPMENT REQURED FOR SERVICING
QY01 : TMP47C201P
Item Use
XOUT 1 16 VDD
XIN 2 15 DIN (INT 1)
RESET 3 R53 14 VIN Distortion Analyzer Distortion measurements
NOT USED 4 R80 R52 13 HEAT
DOUT 5 R81 R51 12 LEVEL Audio Oscillator Sinewave and squarewave signal source
Sink open-drain outputs
PLED 6 R40 R50 11 RSEN
SLED 7 R41 R43 10 AVSS
VSS 8 R42 9 ON
Sink open-drain outputs AC VTVM Voltage measurements (AC)
AC VTVM
Oscilloscope Waveform analysis and trouble shooting and ASO alignment
Port Pins Name In/Out Active Description
ASO
R80 4 Input Not used
DC VTVM Voltage measurements (DC)
R81 5 DOUT Output Data output from RC5.
DC VTVM
R82 15 DIN Input L Data input to RC5.
AC Wattmeter Monitors primary power to amplifier
R40 6 PLED Output L Power LED.
Line Voltmeter Monitors poterntial of primary power to amplifier
R41 7 SLED Output L Stand-by LED.
R42 9 ON Output L/H Power amplifier OFF/ON
Vanable Autotransformer Adjust level of primary power to amplifier
R43 10 AVSS Output L/H Power amp supply voltage control. Low/High voltage.
R50 11 RSEN Input H/L Power amp output muting status detection input. OFF/ON.
Circuit Tester Trouble shooting
R51 12 LEVEL Input L/H Power amp output level detection input. High/Low power.
R52 13 HEAT Input L/H Heat sink overheating detection input. Overheat/Normal.
Shorting Plug Shorts amplifier input to eliminate noise pickup
R53 14 VIN Input L/H Video and DC signal detection input. Detected/Not detected.
1 2
5. SCHEMATIC DIAGRAM AND PARTS LOCATION (Pattern Side)
J705
4 3 2 1 *
R725 R745 R744
DUMMY DUMMY
C706 10
P701 MAIN 220/100V 63.8 1/4W 64.0
+B
R707 D701 R714 R716 R718
270 * 1K 1K 180
63.0
D702 63.0 Q711
* 2SC4793
Q706 R727 C713 R736 D707 R738
Q703
2SC2922
2SA1360 100 1.7 120p 1k HSS81 22k
Q713
2SA1145 62.6 0.6
O/Y 1.7 Q709 1.1
R711 R746 2SC2705 O/Y
56k * R730
R721 12k
22
1.1 0.6 0
R733
C708 R735
4.7
R712 D703
2SC2240
CS08 56k 22PF HSS81 0.10 X2 J701
Q715
4.7/100V
0.6 64.0
5W
C709
470P RS12 500V D705 R732 C715
N ONLY * C701 R703 Q701 C718 R724 5.1V R729 220 1.7 LN01 C717 0.01
47/10V 2SA970 62.0 1k 1/2W L701 R741
2SC3419Y
1k 0 0 R720 33k 100p 47k 0
10 1W DUMMY N ONLY
+
Q708
JS01 CS01
DUMMY
RS01 CS03 -1.6
R723
C719
4.7/50V 1K 47P
R702 C702
-62.0 Q702
2SA970 -62.0 62.0
R719 2.2k D704 C710 0 SPEAKER
INPUT CH
N ONLY -15.0
R701
220k 33k 470p
1.2k
C707
,PÊ,e 100V R722
HSS81
D706
-1.1
-0.6 0.01 -1.0
R740
-
RS02 CS02 R706 2.2K 220 1/4W C711 R742
47 5.1V
INVERT 100K 22P 0 0 0 C704 0.1 56k
R734
4.7
R731
2SC2705
47/10V -1.6 R737 2.2k 0
4.7/50V
CS04
CH CS07
Q705
1 2 3 4 22
O/Y
10/16V C703 DN01 C716
NJM4558DD
680P/100V C712 0.01
OUTPUT
QS01
-1.6 -1.1
0.1 1D3
RN01 N ONLY
2SA1216
-62.0 -62.0 -0.5
Q714
R728 Q710 820
Q707 2W
2SC2705
CS06 100 C714 2SA1145
Q704
2SC3423
O/Y
8 7 6 5 10/16V R709 R704 R705 R713 120p O/Y R739
4.7k 2.2K 2.2K 1K Q712 22k
0 0 0 -63.0 2SA1837 RN02
CS09 CS05
RS07 4.7/50V
470P 15.0 R717 820
3.3K 180 2W
N ONLY RS03