Audioaccess-MA361-pwr-sm维修电路原理图.pdf

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1、 AUDIOACCESS MA-361/MA-361CP TWELVE CHANNEL DIGITAL AMPLIFIER PRELIMINARY SERVICE MANUAL Harman Consumer Group 250 Crossways Park Dr. Woodbury, New York 11797 RadioFans.CN 收音机爱 好者资料库FEATURES The Audioaccess MA-361 Twelve Channel Digital Amplifier designed, engineered and manufactured by Madrigal in

2、Middletown, CT represents the product of over two years of research and development. As the inventor of the 12 channel amplifier category, Audioaccess has reinvented this category with the introduction of the MA-361. The goals for the MA-361 were clear: high power, low distortion, quiet, cool operat

3、ion, outstanding sonics and ease of installation, when used not only in Audioaccess systems, but also with other home and commercial audio distribution systems. The trend towards higher quality and larger speakers for custom installed applications has created a need for this amp. We believe you will

4、 agree that the MA-361 is the first in an entirely new class of twelve channel amplifiers. Unique features The main features of the MA-361 include a conservative power rating of 100 Watts per channel into 8 Ohms from 20Hz-20kHz with all channels driven at 93% efficiency. This amazing efficiency not

5、only minimizes power consumption, it also runs surprisingly cool. Other unique features include programmable 7-band graphic EQ (set by the installer via PC) for each zone and optional plug-in stereo Volume/Tone Control Modules, which pro-vide volume control in Expansion rooms/sub zones within an Aud

6、ioaccess system or another RS-232 based control system. The modular layout permits the dealer to easily replace individual amplifier modules should service ever be required. An external speaker termination board can be ordered in advance to allow termination of loudspeakers before the amplifier is d

7、elivered for final installation. At final, simply plug the speaker termination board onto the rear panel of the amplifier. Other features To make the amplifier specifically attractive for use in whole-house audio distribution, we have included specific features to ensure reliable and easy installati

8、on. Signal sensing and voltage triggers activate the main power in each stereo zone of amplification. Dip switches on the rear-panel configure the MA-361 for use in either mono or stereo operation. A simple bussing scheme allows audio signals to be routed into a single zone, selected zones, or all a

9、reas. 7-Band Graphic Equalization The MA-361s 7-band graphic equalization capabilities allows the installing dealer to custom tailor the sound in each zone to compensate for the different room acoustics throughout a residence, maximizing the performance of each pair of speakers. This is accomplished

10、 by using the Audioaccess Installation Manager Software application (or stand-alone application) running on the dealers PC or laptop. Signal Sensing and Voltage Triggers The signal sensing capabilities of the MA-361 ensure that the amplifiers for a given zone are only powered on when a particular ar

11、ea is active, saving on energy consumption. Voltage triggers allow the MA-361 to automatically turn on accessory items such as a fan, or a separate device when either the amplifier or a designated zone is activated. Volume/Tone Control Modules Optional Volume/Tone Control Modules, which plug into av

12、ailable slots inside the amplifier, provide the ability to supply high power at very low distortion levels to expansion rooms within the multi-room system. The user may control the volume in rooms with Audioaccess keypads and touchscreens, or by using ANY other touch screen/control systems. A total

13、of 6 Volume/Tone Control Modules may be installed in the MA-361. Flexible Installation Capabilities The MA-361 is designed for use with Audioaccess systems, as well as other Multi-room or RS-232 based systems. The unit is programmed with the proprietary Installation Manager application when it is us

14、ed with other Audioaccess Multi-Room components. Configuration settings are downloaded from a Windows PC or laptop via the RS-485 communication port on the MA-361. When used with other RS-232 based systems, a separate application is available, which downloads amplifier configuration settings via the

15、 RS-232 port on the MA-361CP version. Summary The MA-361s combination of power capabilities, sonic quality, features, programming ease, installation flexibility and serviceability clearly sets the new standard for amplifiers within the multi-room category. RadioFans.CN 收音机爱 好者资料库Specifications: Numb

16、er of Channels: 12, configured as 6 left/right mono or stereo pairs (zones) Power Output: 100 Watts 8 ohms, from 20Hz 20kHz, all channels driven 130 Watts 4 ohms, from 20Hz 20kHz, all channels driven 200 Watts 4 ohms, from 20Hz 20kHz, two channels driven Efficiency: 93% 100 Watts/8 ohms THD & Noise:

17、 0.3%, 0.1 Watt 200 Watts, 4 ohms IMD:-0.26% 4 ohms 200 Watts Frequency response: 0.3 dB at rated power, 812 load Bandwidth: 60kHz at rated power, 812 load Signal/Noise: 97dB unweighted (ref: rated power) into 8 12 Crosstalk: -84 dB between any two channels (no audible crosstalk) Protection:Short Ci

18、rcuit, Over Current, DC, Thermal and Undervoltage Muting: Turn-on, Turn-off, Signal Sensing and Triggered per zone Input Impedance: 20K Input Sensitivity: 1.3 Volt for full output 4 or 812 Gain: 27dB Dimensions: 17 1/4W x 5 1/8H x 17 5/8D (438 mm x 130 mm x 448 mm) (with connectors & feet) Weight:11

19、0 Volt Amplifier: 48 lb (21.8 kg), 230 Volt Amplifier: 51 lb (23.2 kg) Features, specifications and dimensions are subject to change. Madrigal Audio Laboratories P.O. Box 781 Middletown, CT 06457-0781 (860) 346-0896 FAX (860) 347-6251 # A041102 MA-361 AUDIO BOARD REMOVAL AND ASSEMBLY INSTRUCTIONS Au

20、dioaccess AUDIO BOARD DISASSEMBLY INSTRUCTIONS APRIL 15, 2002 A041102 MA-361 Disassembly Instructions Page 2 Table of Contents Overview.3 Affected Units .3 Cautions before Beginnning .3 Tools Required.3 Disassembly/Reassembly Steps.4 Removal/Assembly Sheets.A Process Description Sheets Step 1 Remove

21、 Top Cover. A000010P265 Step 2 Remove Larger PCP Clamp Assembly . A000010P245 Step 3 Remove First Graphic EQ PCB. A000010P210 Step 4 Remove Second Graphic EQ PCB . A000010P205 Step 5 Remove Screws Holding RS-232/485 PCB . A000010P200 Step 6 Remove RS-232 PCB (CP Model Specific). A000010P190 Step 7 R

22、emove RS-485 PCB (Standard MA 361 Specific). A000010P185 Step 8 Remove Amp Module Clamp Assembly. A000010P180 Step 9 Remove Outer Ribbon to Audio Output PCB . A000010P170 Step 10 Remove Inner Ribbon to Audio Output PCB. A000010P165 Step 11 Remove Screws on Audio Output PCB .A000010P160A Step 12 Remo

23、ve Audio Output PCB . A000010P155 Step 13 Remove Audio Modules. A000010P150 Step 14 Remove Audio Module Signal Cables . A000010P135 Step 15 Remove Audio Module Power Cables . A000010P130 Step 16 Remove Volume Bypass Jumpers. A000010P125 Step 17 Remove 20 Pin Ribbon Cable.A000010P120A Step 18 Remove

24、40 Pin Ribbon Cable.A000010P115A Step 19 Disconnect Connector on Audio Board P1. A000010P110 Step 20 Disconnect Cable on Audio Board to RCA Input Board. A000010P105 Step 21 Remove Screws on Audio Board1 . A000010P095 Step 22 Remove Back Panel Screws. A000010P092 Audioaccess AUDIO BOARD DISASSEMBLY I

25、NSTRUCTIONS APRIL 15, 2002 A041102 MA-361 Disassembly Instructions Page 3 Overview The following procedure will allow a qualified Audioaccess Distributor to successfully remove and reinstall the MA-361 Audio Board. New replacement audio boards shipped April 2002 eliminate a problem where keypad mess

26、ages may be heard as pops in Zones 1, 2 , 3 and 4 in affected units. In addition, the signal sensing sensitivity was lowered to avoid audio from shutting off during low passages of music if the amplifier is configured to turn on with Signal Sensing. Affected Units MA-361s manufactured before the ser

27、ial numbers listed below should receive an updated Audio Board. Starting Serial Numbers Updated Audio Boards Domestic Units 361u1073 Export Units 361e1018 Cautions! Before Beginning CAUTION! Hazardous voltages available inside unit. Before proceeding, remove AC cable from AC outlet. CAUTION! Static

28、sensitive parts and subassemblies inside unit. A static protection wrist strap must be worn when touching static sensitive components. Please follow wrist strap manufacturers instructions for proper use. Tools Required o #2 Phillips Screwdriver o 3/32” Hex Driver o Needle Nose Pliers Audioaccess AUD

29、IO BOARD DISASSEMBLY INSTRUCTIONS APRIL 15, 2002 A041102 MA-361 Disassembly Instructions Page 4 Disassembly/Reassembly Steps The Disassembly steps are depicted in the process sheets and are identified below in Steps 1 through 22. Instructions on each step are included in the process sheet for each s

30、tep. In addition, some notes are provided below to clarify a step for either Assembly or Reassembly. Once the Audio Board has been extracted, repeat each step below in a backwards order from Step 22 through Step 1 when installing the replacement Audio Board. Step Number Description Process Sheet Num

31、ber Step 1 Remove Top Cover.A000010P265 Step 2 Remove Larger PCP Clamp Assembly .A000010P245 Step 3 Remove First Graphic EQ PCB.A000010P210 Step 4 Remove Second Graphic EQ PCB .A000010P205 Step 5 Remove Screws Holding RS-232/485 PCB .A000010P200 Step 6 Remove RS-232 PCB (CP Model Specific).A000010P1

32、90 This step is used for MA-361CP units only. Step 7 Remove RS-485 PCB (Standard MA 361 Specific).A000010P185 This step is used for the standard MA-361. Step 8 Remove Amp Module Clamp Assembly.A000010P180 Note the “Dimples” or “Notches” on each end of the amp Clamp Assembly. When re- installing this

33、 clamp, assure that these “dimples” are reinstalled in the same direction as when removed. Step 9 Remove Outer Ribbon to Audio Output PCB .A000010P170 Step 10 Remove Inner Ribbon to Audio Output PCB.A000010P165 Step 11 Remove Screws on Audio Output PCB .A000010P160A When reassembling, these screws m

34、ust be tight for grounding purposes before AC power is applied. Step 12 Remove Audio Output PCB .A000010P155 Step 13 Remove Audio Modules.A000010P150 Step 14 Remove Audio Module Signal Cables .A000010P135 Step 15 Remove Audio Module Power Cables .A000010P130 Step 16 Remove Volume Bypass Jumpers.A000

35、010P125 These Jumpers are present whenever the Volume Tone Modules, EM401, are not used. Remove these jumpers and install in the replacement Audio Board. Step 17 Remove 20 Pin Ribbon Cable.A000010P120A Step 18 Remove 40 Pin Ribbon Cable.A000010P115A Step 19 Disconnect Connector on Audio Board P1.A00

36、0010P110 Disconnect only the connector on the Audio Board PCB. Do not disconnect connector on Power Supply or Controller PCB. Step 20 Disconnect Cable on Audio Board to RCA Input Board.A000010P105 Step 21 Remove Screws on Audio Board.A000010P095 Step 22 Remove Back Panel Screws.A000010P092 MA361/M36

37、1CP Electrical/Mechanical Parts Lists Note: These parts lists may contain some part numbers that are not valid, or No Longer Available. Descriptions and Reference Designators, when included, should aid technicians in part substitution. If necessary, call the Parts department at 1-516-496-3400 ext. 6

38、553 for assistance. MA-361 MAIN PARTS LISTPart NumberDescriptionQTYManufacturerComments200256CAP LYTIC 47U 20% 16V SMT PAN. EEV-HB1C4701PANASONIC-EEV-HB1C470C2760225ICS DIG ADM202EARN RS232 DRV/RCVR SMD1ANALOG DEVICES-ADM202JRNU1327-01009-00CONN D_SUB 9PIN PCMT 745781-4 9PIN FEM DS1AMP- 745781-4USED

39、 IN PX700P1220189CAP EMI 10N 30% 50V RADIAL PAN. EXC-CET1032PANASONIC-EXC-CET103DF1 DF2230109CAP SMD .1UF 25V X7R CER6ANY MANUFACTURERC1 C3 C4 C5 C6 C7205-70200-00DIODE, TVS, 600W, UNI-DIR, 20V, SMT2MOTOROLA- 1SMB20AT3MFGS P/N CORRECTEDESD1 ESD2320-50003-00 SAMTEC HEADER 2X31SAMTEC- TSW-103-07-G-DAD

40、DED- ECN3008P3320-59902-00SHUNT JUMPER 1X223M- 929950-00ADDED- ECN3008P3INSTALL IN DTE POSITION- PER REVISED ASSY DWG 943321B- ECN3105E01535CONN HEADER 14PIN PCMT TSW-107-08-T-D-RA .1SP D/R R/A1SAMTEC TSW-107-08-T-D-RANO GOLD!330708 P1612-18190-00BRACKET, PC MNT SCREW TERM, 8190 (NO SCREW)2KEYSTONE-

41、 8190NO SCREWMT1 MT2580646APCB MA361 RS2321PER DWG# 943320B DRILL CHARTWAS 580646- ECN3007BD FILENAME: 580646A.ZIPPart NumberDescriptionQTYManufacturerComments100774RES SMT 330R 5% 1/10W 080514ANY APPROVED R1 R10 R13 R14 R15 R16 R2 R3 R4 R5 R6 R7 R8 R9230145CAP CER_X7R 100N 5% 50V SMT 080514ANY APPR

42、OVEDC1, C4, C7, C10, C13, C16, C19, C22, C25, C28C1 C4 C7 C10 C13 C16 C19 C22 C25 C28C31, C34, C37, C40 ADDED- ECN3043C31 C34 C37 C40230150CAP CER_X7R 1N0 5% 100V SMT 080528ANY APPROVEDC1, C4, C7, C10, C13, C16, C19, C22, C25, C28 C11 C12 C14 C15 C17 C18C31, C34, C37, C40 REMOVED- ECN3043 C2 C20 C21

43、 C23 C24 C26 C27 C29 C3 C30 C32 C33 C35 C36 C38 C39 C41 C42 C5 C6 C8 C9310101WIR 26 COND FLAT RIBBON GREY3AMPHENOL- 843-191-2801-126For RCA to Audio cable per dwg# C000024AMPHENOL- 843-191-2801-026330337CON LNMT 26PIN .1SP SOCKET IDC1AMP- 2-216408-6For RCA to Audio cable per dwg# C000024330339CON PC

44、MT 26PIN .1SP DIP PLUG W/ LEGS1AMP- 111382-6For RCA to Audio cable per dwg# C000024E01610CONN RCA_F 3PIN PCMT RCA-151R-G RED VERT MT RCA7Power Dynamics- 151W-GGold plated330166 P10 P12 P14 P2 P4 P6 P8E01611CONN RCA_F 3PIN PCMT RCA-151W-G WHITE VERT MT RCA7Power Dynamics- 151R-GGold plated330165 P1 P

45、11 P13 P3 P5 P7 P91TBD P15E01631MISC SWAGE 156 SWAGE 9/16L RAF 3052-B-632-B-376RAF 3052-B-632-37 MT1 MT2 MT3 MT4 MT5 MT6580656APCB, RCA INPUT PX7121AS PER DWG# 943350ABD ARTFILENAME- 580656A.ZIPP/NDescriptionQTYManufacturerComments100506RES SMT 22K1 1% 1/10W 08056ANY MANUFACTURER R1138 R338 R38 R538

46、 R738 R938100509RES SMT 4K99 1% 1/10W 08051ANY MANUFACTURER R1224100543RES SMT 10M 1% 1/10W 080512ANY MANUFACTURERADDED R31, R32, R331, R332, R531, R532, R731, R732, R931, R932,R1131, R1132- ECN3104100549RES SMT 221R 1% 1/10W 08056ANY MANUFACTURER R1133 R33 R333 R533 R733 R933100584RES SMT 1K00 1% 1

47、/10W 080534ANY MANUFACTURERADDED R41, R341, R541, R741, AND R1117 R1118 R1139 R1301 R1303 R1305R941, R1141- WERE E01501 R1307 R1309 R1311 R17 R18 R317 R318ECN3104 R339 R39 R42 R44 R46 R47 R517 R518 R539 R717 R718 R739 R917 R918 R939 R41, R341, R541, R741, R941, R1141100762RES SMT 47K0 5% 1/10W 08056

48、ANY MANUFACTURER R1013 R1213 R213 R413 R613 R813100774RES SMT 330R 5% 1/10W 08058ANY MANUFACTURER R1315 R1316 R1317 R1318 R1319 R1320 R43 R45100783RES SMT 3K32 1% 1/10W 080515ANY MANUFACTURER R1001 R1026 R1201 R1225 R1226 R1228 R1229 R201 R226 R401 R426 R601 R626 R801 R826100787RES SMT 20K0 1% 1/10W

49、 0805106ANY MANUFACTURERREMOVED R21, R25, R321, R325, R521, R1 R10 R11 R1105 R1106 R1107 R1108 R1109R525, R721, R725, R921, R925, R1121, R1110 R1111 R1112 R1113 R1114 R1119R1125 -ECN3104 R1120 R1122 R1123 R1124 R1126 R1127 R12 R13 R14 R19 R2 R20 R22 R23 R24 R26 R27 R3 R305 R306 R307 R308 R309 R310 R

50、311 R312 R313 R314 R319 R320 R322 R323 R324 R326 R327 R4 R5 R505 R506 R507 R508 R509 R510 R511 R512 R513 R514 R519 R520 R522 R523 R524 R526 R527 R6 R7 R705 R706 R707 R708 R709 R710 R711 R712 R713 R714 R719 R720 R722 R723 R724 R726 R727 R8 R9 R905 R906 R907 R908 R909 R910 R911 R912 R913 R914 R919 R92