AMC+30 Service Information
Contents
1. 4 5 6 7 8 M NZD 1N4007 1N4148 7 100 M NZD 100 35 154148 147uF25 ur RI2 R19 2 76 2 145 OE 20 TE 1 n3 R10 C3421 Kx TIP3S 6 8 NZD 1N4007 R14 R15 1N4007 DIO 100E R21 4 A 4 T9 cisis f 1 R22 R25 R27 6K8 T7 220R 68E 0 22 5 mcd E Imm 13T 47 25 Rie 1K2 R30 4 4 4 E E 4 TOEAW CNI R23 R26 R28 R29 R31 COM 1 220R 68E 0 22E 5V 10E2W 10E2W 2 PRI ER 3 m 100V 330 lt 10 0 00 0 1 100 C17 470u 50V 220 50 14007 gt D7 14007 N5402 2200 35 1 2 NI D13 5 2200 2357 N5402 M REV REVISION NOTE DRN DATE MONITOR DRAWINGNo SIL 16 0343 Added output cap CKW 20 02 08 ad 2 D increased gain R1 2 8 C2 CKW 22 05 08 DESCRIPTION AMC30 Power Amp E DATE 2009 5 5 DRAWN BY SHEET 100R R46 R47 100R R7 180k TH 10pF RB 10K CIA cl LM8332. 120 2A 250V SB cer gens pw pa O N XL OON 230 240 50Hz Mg iod ENGINEERED in SYONEY LUETRALIA O 5 098 O 1 4 Minimum Impedance AMC 30 AMC 60 120 250 Each channel input section has two inputs input This Distributed Line Output is a balanced microphone input It has an input sensitivity of 1mV RCA input This is an unbalanced line level input It 115V version 166ohm 83ohm 41ohm 20 has input sensitivity of 150mV The two sockets summed to mono internally REC Output The REC output is on unbalanced RCA connectors The output level is 150mV into 10kohm at rated output The output is dual mono The REC output is not affected by the MASTER volume control or the BASS and TREBLE controls The REC output does not receive the tone signal if the optional tone generator module is installed Line Output The LINE output is on a balanced XLR connector The output level is 0 775V into 1k at rated ou tput Note When wiring the LINE output as unbalanced Pin2 should be wired as hot and Pin1 should be wired as ground shield Do not wire Pin3 Direct Out The speaker connections are on the 12 pole terminal strip There is a low impedance output OHM and a distributed line voltage output LINE 70V out is available on
3. 20mm e DC fuses 1 6 QA 20mm 2 2 Connect amplifier to e Variac e Signal generator no signal e Resistive load 40 on 40 terminal 2 3 Reset controls Volume controls to minimum e Bass treble control to center PRI presets Amplifier PCB fully anticlockwise 3 Power 3 1 Turn on power switch and adjust voltage to 230VAC Watch current meter for excess current draw Current should not exceed 0 5 3 2 Check DC power supply at fuses Should be approx 22 1 5V 3 4 Check DC voltage on mixer board Should be approx 12V 0 5V 3 5 Check 1 2 VCC on mixer board should be 5 4 VDC 0 5 3 6 Measure DC voltages on IC of mixer amp input PCB s p8 12V 4596 p4 4 100mV 5 4V 596 3 7 Put a multimeter across R27 the meter read OmV then slowly adjust the preset so that you get 2 5mV Check Quiescent Vtg across all Emitter resistors 4 AC Check 4 1 Set signal generator to ImV Turn up Mic volume control to full Watch for irregularities with output 4 2 Set output to 7V using master volume control Check voltage across Emitter resistors on power devices 4 3 Voltage should be between 150 200mV Min and max values should be between 33 of the average value i e min max 0 5 4 4 Turn master up to full set sensitivity of mike input to ImV 4 5 Check the output of all channels should be 11V 0 1V 4 6 Check 100V 5V at 100V terminal 4 7 Check
4. 417 2 422 5 2 TAPE OUT 12766 gt cu lt wm 100P C8 33n 10k 50k 1 R17 Signal 10k CNI R34 OUT 10k 1 2 3 C9 e IN gt 4 1200P LM833 5 4 7 X2 VCC OUT RB Meo Signal 8 St 9 4 EN RS 2 cn 100p 10k 24 Tone Module Input 407 PRIORITY m a0 DK ji 4u7 1 2VCC lt TH AMP WW RO RIA 20 EI 20 m GE 75 0 AMP eel TOK 1 O 1 R32 2 o N p TH 4 bT 5 6k 220EDW G Changed gain R16 22k gt 12k C12 220p 100p R19 1k gt 4k7 CKW _ 22 05 08 DS REV REVISION NOTE DRN DATE AUSTRALIAN MONITOR I2VIW A a 7 3 DRAWINGNo SIL 16 0345 5 DESCRIPTION Mixer 5 E Changed to 4 channels 15102708 200955 DRAWN BY SHEET N 6 R4 100E D2 1N4148 D3 1N4148 47uF 25 R13 M BD139 6 lmnmy 13T R30 L CI0 0 luE 100V IuE 100V 4E COM M CNI Re 1 gt 1145 1145 2 Ly PRI T Lx 2K 330E 2 15
5. Location of Priority connector shipped enabled AMCMIXER G ao OL eH A 3j PRORITY m uuu Connector for Optional Tone Module Red wire to pin1 left PAGE 8 AMC SERIES INSTALLATION AND OPERATION MANUAL 482 00 mm 19 007 467 00 mm 18 397 E Lh Australian Monitor O AMC 120 2500 SB aec A 00 90 230 240 sonz Aon 443 00 mm 17 44 e e AMC250 19 00 0 757 330 00 13 00 P x Be E 30 60 120 19 00 0 757 294 50 11 59 SERIES INSTALLATION MANUAL 9 SPECIFICATIONS AMC 30 AMC 60 AMC 120 AMC 250 POWER OUTPUT 0 5 THD 1KHZ 30W 60W 120W 250W S N RATIO gt 75dBr gt 75dBr 80dBr 85dBr POWER BANDWIDTH 3dB 1dB 85Hz 15kHz 75Hz 15kHz 75Hz 15kHz 30Hz 20kHz FUSES MAINS 115V 1 0 3
6. R32 R9 82E T10 330E A1015 4708 C181 T5 220 50 r C1815 T8 by D7 14007 230V TO 5A 115V TIA 230V 115V AC Fl 2 F2 125 LONG d Tl 2159 M D10 LRN IS 2200uF 35V SW DPDT TRANS1 Ci r 2200uF 35 V M 16 C17 470u 50V 1 B eo 100V L o D Title Size Number Revision Date 4 23 2012 Sheet of File 30 1 5 Drawn By N 6 is T12 D9 R24 R16 R14 R15 R19 if et p R18 PR1T ALJ ED ID Cat C16 11 10 D3 02 se Cy Hones It PIER R C2 R2 R7 R6 ene 0 g a CE p CT P S TXFR TS R4 T R32 D1 N P e CN1 30 AMP C NEN a C17 OUT 3i i J2 JD C OUT 15 tig R21 e 0 TEST PROCEDURE MODEL 30 1 Perform physical inspection Visual Inspection stage 1 1 Check e screws for tightness esp transistor bolts Capacitors for polarity Earth connection for good contact XLR GND to AC earth Power transistors for shorts to heatsink wiring points for good contacts soldering and crimping PRETESTING PRE TESTING SETUP REQUIREMENT a Oscilloscope b Variac c Multimeter d Load 40 e Signal generator 2 Setup amplifier for test Pretesting stage 2 1 Check e AC fuses 0 5A
7. 11 Howe Street Osborne Park WA 6017 PO Box 1281 Osborne Park BC WA 6916 Phone 08 9204 0200 Fax 08 9244 3783 Email wa audiotelex com au AUCKLAND NZ SALES 9C Piermark Drive Albany 0752 New Zealand PO Box 300 512 Albany 0752 Phone 09 415 9426 Fax 09 415 9864 Email sales audiotelex co nz 6 7 8 A RCAIA RCA 4POLE 330K R6 AK vec vcc 1 2 3 4 5 6 7 3 8 AK 9 28 R29 TAPE OUT 4k7 l4k7 470p 10 1 CONIO RCAIB R7 XLRS RCA 4POLE 4u7 Eu XLR MALE c2 417 LINE OUT 1 2VCC XLR FEMALP c tcn 1025 10 25 RCA2A R14 RCA 4POLE 330K L RCA2B R22 RCA 4POLE 330K L C26 10 25 NP 10 25 C31 447 10 25 470p RET 1 5 REV REVISION NOTE DRN DATE MONITOR MGE DRAWINGNo SIL 16 0339 4 F 3 D Added 4th channel amp 1206030 MIGTNEUT E DATE 2009 5 5 DRAWN BY SHEET of 3 4 5 6 7 8
8. 15 4 6 3A MAINS 230 240V 0 5A 1 6A 2A 3 15A DC 1 6A x2 4 8 10A x2 OUTPUT REGULATION 96 93 93 90 SIZE WXHXD 482 x 88 x 190mm 482 x 88 x 281mm 482 x 88 x 281mm 482 x 88 x 384mm 19 35 x 7 5 19 35 x 11 1 19 x 35 x 11 1 19 x 3 5 15 1 NET WEIGHT 6 0kg 8 5kg 10 5kg 11 5kg 13 26 18 71 23 1lb 25 3 SHIPPING WEIGHT 7 59 10 5kg 12 5kg 14kg 16 56 23 1lb 27 66 30 8 SHIPPING DIMENSIONS WXHXD 510 x 145 x 207mm 525 x 175 x 385mm 525 x 175 x 385mm 525 x 185 x 470mm 20 1 x 5 2 x 11 7 20 7 x 6 9 x 15 2 20 7 x 6 9 x 15 2 20 7 x 7 3 x 18 5 MAINS CURRENT DRAW 240V FULL POWER 0 35A 0 664 1 204 2 534 1 3 0 234 0 44 0 80 1 61 1 8 0 17 0 32 0 55 1 10 IDLE 0 08 0 13 0 15 0 15A MAINS CURRENT DRAW 115V FULL POWER 0 73A 1 38 2 50 5 28 1 3 0 48 0 92 1 67 3 36A 1 8 POWER 0 35A 0 67A 1 15 2 30 IDLE 0 17 0 27 0 31A 0 31A THERMAL OUTPUT W FULL POWER 38W 67W 128W 259W 1 3 POWER 33W 63W 118W 231W 1 8 POWER 26W 51W 91W 168W IDLE 11W 19W 26W 26W THERMAL OUTPUT BTU HR FULL POWER 130 229 437 884 1 3 POWER 113 215 403 788 1 8 POWER 90 172 311 573 IDLE 38 65 89 89 PAGE 10 1 3 and 1 8 power levels relate to voltage changes not load changes AMC SERIES INSTALLATION AND OPERATION MANUAL SPECIFICATIONS COMMON TO ALL MODELS THD 1KHz 1dB Better than 0 5 MIC INPUT SENSITIVITY 1mV 200 IMPEDANCE 1k3 ohm HEADROO
9. Enable b pot Center LISTENING TEST 10 Insulation test and High voltage test to be carried out as per UL Standard Procedure Requirements for Listening Test Setup a CD Player b Speaker Microphone 11 Listening test 11 1 Keep all pot full tone at center switch ON the set and check for ON thump and also check that no low frequencies are audible Make all Channel Pots minimum 11 2 Check CD Player AUX output for all channels and tone control for all channels 11 3 Check Priority function CH 1 over CH2 amp 3 11 4 Short the output with signal ON Signal should mute and return back AMC Parts Circuit boards Part Number Factory code Input board AMC IB Mixer board AMC 120MB 806044 30 output board AMC 30OPB B03048 60 output board AMC 60OPB B06047 120 mixer board AMC 120MB B06044 120 output board AMC 120OPB B012046 250 output board AMC 250OPB BR025001 Transformers AMC 30 mains transformer 30 030123 30 output transformer AMC 30OT BR030124 60 mains transformer AMC 60TX BD6041 60 output transformer AMC 60OT BD060127 AMC 120 mains transformer AMC 120PTX BD0642 AMC 120 drive transformer BRO0120036 0120036 120 output transformer AMC 120OT BR0120125 AMC 250 mains t
10. s O COM LOAD LINE LIMITING 1 FO 100 230V version 2595 LO 70V 115V version 3 2 SPEAKER OUTPUT OUTPUT X REC OUTPUT 5 7 FUNCTIONAL NOTES INTERNAL ADJUSTMENTS PRIORITY Channel 1 will mute channels 2 3 and 4 This will only occur when signal appears on channel 1 irrespective of the channel volume control Priority can be disabled See below The release time is approx 3 secs and is NOT adjustable The mute depth is approx 40dB and is not adjustable Use spare terminals for trigger points when using Optional Tone Module VE gg LI 00005005 0005000 0000500 0050500000 Qo sees i Oot DU m ANP 06
11. should be used on the rack Airflow for cooling the AMC30 AMC60 and AMC120 is by convection from bottom to top Airflow for cooling the AMC250 is by fan from Direct Output The output terminal strip accepts wire sizes from 16 22AWG 1 5mm2 0 35mm2 or spade lugs The following table should be used as a guideline for cable sizes Regulations in your area may require different gauged wire and should be checked before using front to side Output Distance Wire Size 30 AMC 60 AMC 120 AMC 250 100V Up to 50m AWG26 0 12mm AWG26 0 12mm AWG24 0 2mm AWG22 0 35mm 50 200 AWG24 0 2mm AWG20 0 5mm AWG18 0 75mm AWG16 1 5mm Over 200m AWG20 0 5mm AWG18 0 75mm AWG16 1 5mm AWG13 2 5mm 70V Up to 50m AWG26 0 12mm AWG24 0 2mm AWG22 0 35mm AWG18 0 75mm 50 200 AWG20 0 5mm AWG18 0 75mm AWG16 1 5mm AWG13 2 5mm Over 200m AWG18 0 75mm AWG16 1 5mm AWG13 2 5mm AWG10 6 0mm 4 ohm Up to 10m AWG18 0 75mm AWG18 0 75mm AWG18 0 75mm AWG18 0 75mm 10 30 AWG13 2 5mm AWG13 2 5mm AWG13 2 5mm AWG13 0 35mm Over 30m Not Recommended Not Recommended Not Recommended Not Recommended H T EH TA Note Only connect one output either Distributed Line Low Impedance a ea Line Output 62 amp 2 amp 2 62 60 62 230 240 version minimum total speak
12. such as a battery mains source or power supply regardless of whether the amplifier or console is turned on or off Do not run the output of any amplifier channel back into another channel s input Do not parallel or series connect an amplifier output with any other amplifier output Australian Monitor Inc is not responsible for damage to loudspeakers for any reason Do not ground any red hot terminal Never connect a hot red output to ground or to another hot red output Non use periods The power cord of equipment should be unplugged from the outlet when left unused for a long period of time Service Information Equipment should be serviced by qualified service personnel when A power supply cord the plug has been damaged B bjects have fallen liquid has been spilled into the equipment C oH he equipment has been exposed to rain equipment does appear to normally exhibits arked change in performance E The equipment has been dropped or the enclosure damaged THIS SAFETY INFORMATION 15 A GENERAL AND MAY SUPERSEDED BY INSTRUCTIONS CONTAINED WITHIN THIS MANUAL INTRODUCTION CONTENTS The Australian Monitor series of amplifiers takes the heritage and INTRODUCTION 3 reliability of our famous AMIS series amplifiers and integrates these features into low
13. tape outputs L and 250mV 25mV Measure on RCA socket 4 8 Check line outputs Approx 1 2V 0 12V 4 9 Check Tone Module FINAL TESTING Requirements for final testing a Neutric b Load 3300 Oscilloscope d Microphone e Variac 5 Performance Test 5 1 Check Noise should be less then 10mV all pot mid i e S N gt 80dBr 5 2 Check mike sensitivity CH1 CH3 1mV out put 100V 5V 5 3 Check AUX sensitivity CH1 CH3 5000mV out put 100 5V 5 4 Check the Power bandwidth 68Hz 5Hz 15KHz 2KHz 5 5 Check Bass control 100HZ 12dB TOL 1dB and treble 9 10kHz 9 5dB tol 1dB 5 6 Check that input signal and output signal are in same phase by comparing CH 1 AUX Input and all other Outputs 4 100V 6 Priority check 6 1 Plug microphone into input 1 and oscillator to input 3 Check for muting of channel 3 6 2 Make Disable Enable link to disable position Check that CH1 does not mute CH3 Return Disable Enable link to Enable position 7 Over load Test 7 1 Make Output Load 150E Increase the signal till you get 196 the output should be 57V 4V 7 2 Keeping the signal ON short the output for one Sec and remove the output should drop and return back without any distortion or damage to any components Make the output loads normal to 330E 7 3 Reset volumes to minimum 7 4 Disconnect from test bench and inspect for scratches on external paint 8 Factory setting of links a VOX Muting
14. 1 AUSTRALIAN 4 NIONITOR e INTEGRATION INTELLIGENCE SERVICE INFORMATION AMC 30 MIXER AMPLIFIER CONTENTS OPERATION MANUAL SCHEMATIC DIAGRAMS COMPONENT OVERLAYS TEST PROCEDURE REPLACEMENT PARTS LIST SERVICE BULLETIN Australian Monitor 1 Clyde Street Silverwater NSW 2128 Australia 61 2 9647 1411 www australianmonitor com au SERIES 30W 60W 120W 250W AMPLIFIERS INSTALLATION AND MANUAL 10 11 12 Save the carton and packing material even if the equipment has arrived in good condition Should you ever need to ship the unit use only the original factory packing Read all documentation before operating your equipment Retain all documentation for future reference Follow all instructions printed on unit chassis for proper operation Do not spill water or other liquids into or on the unit or operate the unit while standing in liquid Make sure power outlets conform to the power requirements listed on the back of the unit Do not use the unit if the electrical power cord is frayed or broken The power supply cords should be routed so that they are not likely to be walked on or pinched by items placed upon or against them paying particular attention to cords and plugs convenience receptacles and the point where they exit from the appliance Always operate the unit with the AC ground
15. 115V models 100V out is available on 230V 240V models AMC SERIES INSTALLATION AND OPERATION MANUAL 100V 230 240V version 3330hm 166ohm 83ohm 40ohm Low Impedance Output both versions 4ohm 4ohm 4ohm Note Only connect one output either Distributed Line Low Impedance per channel Do not connect LowZ 70 100V at the same time The output strip comes fitted with a touch proof cover held in place by two M3 machine screws with flat and spring washers Mains Input Socket This is a standard IEC 3 pin socket It accepts a standard IEC mains cable provided The fuse draw at 5 contains the mains fuse and a spare The mains fuse is a time lag slow blow 20mm x 5mm ceramic type fuse The ratings are AMC 30 AMC 60 120 AMC 250 230V 240V model 0 5A 1 6A 2A 2 15A 115V model 1A 3 15A 4A 6 Aways replace the fuse with one of the same value and type Note Always disconnect power to the amplifier before replacing fuses Optional Tone Module These terminals are for use with an optional tone module hot supplied Use Australian Monitor ATC5488 module Phantom Power 12V phantom power is available for condenser or electret microphones on the XLR input when this switch is pushed in PAGE 5 INSTALLATION Mounting When rack mounting it is advisable to allow 1 rack space above and below the amplifier When multiple amplifiers are mounted in a rack exhaust fans
16. M 77mV 3708 AUX INPUT SENSITIVITY 0 5V 100kohm IMPEDANCE gt 200kohm HEADROOM gt 15V gt 30dB TONE CONTROL BASS 100HZ 12 dB TREBLE 10KHZ 9 dB LINE OUT NOMINAL OUTPUT 0 775V 1kohm OUTPUT IMPEDANCE 100ohm REC OUT NOMINAL OUTPUT 250mV Q 10kohm OUTPUT IMPEDANCE 1kohm AMC SERIES INSTALLATION AND OPERATION MANUAL PAGE 11 AUSTRALIA AND NEW ZEALAND www australianmonitor com au SYDNEY NSW amp ACT SALES 1 Clyde Street Silverwater NSW 2128 Private 149 Silverwater NSW 1811 02 9647 1411 02 9648 3698 Email nsw audiotelex com au MELBOURNE VIC amp TAS SALES 22 277 Middleborough Road Box Hill VIC 3128 PO Box 151 Blackburn South VIC 3130 Phone 03 9890 7477 Fax 03 9890 7977 vic audiotelex com au BRISBANE QLD SALES 42 Commercial Road Fortitude Valley QLD 4006 PO Box 2578 Fortitude Valley BC QLD 4006 Phone 07 3852 1312 07 3252 1237 qld audiotelex com au EUROPE ASIA MIDDLE EAST www australianmonitor com au INTERNATIONAL SALES 1 Clyde Street Silverwater NSW 2128 Australia Private Bag 149 Silverwater NSW 1811 Phone 61 2 9647 1411 Fax 61 2 9748 2537 Email international audiotelex com au ADELAIDE SA amp NT SALES 31 Walsh Street Thebarton 5031 157 Hindmarsh SA 5007 Phone 08 8352 4444 Fax 08 8352 4488 Email sa audiotelex com au PERTH WA SALES 3
17. cost amplifiers for applications where reliability is everything but the FRONT PANEL 4 more elaborate features of our AMIS series are not required Available in 30 60 120 and 250 watt versions the AMC series are 2 RU mixer REAR PANEL 5 amplifiers featuring 70 100 volt line and 4 ohm outputs and 4 universal mic line inputs INSTALLATION 6 Master volume and overall treble and bass controls are provided along with Vox TROUBLESHOOTING AND BLOCK DIAGRAM 7 triggered muting defeatable giving channel 1 priority over inputs 2 3 and 4 There is also the facility to add a tone generator card FUNCTIONAL NOTES AND INTERNAL ADJUSTMENTS 8 The Australian Monitor series gives the contractor low cost alternative DIMENSIONS 9 in applications that are price sensitive but still require a high quality of sound reproduction and reliability SPECIFICATIONS 10 11 AUS EUR USA Copyright 1st Apr 2005 Rev A 1st Apr 2005 Rev B 6th Jun 2006 Rev C 26th May 2008 CAUTION RISK OF ELECTRIC SHOCK This symbol is intended to alert the user to the presence of uninsulated DO NOT OPEN dangerous voltage within the products enclosure that may be of sufficient magnitude to constitute a risk of electric shock to persons CAUTION TO REDUCE THE RISK OF ELECTRIC SHOCK DO NOT REMOVE COVER OR BACK This symbol is intended to alert the user to the presence of important NO USER SERVICEABLE PARTS INSIDE operational and maintenance servicing i
18. emedy Check power switch is on Check mains connection Check mains fuse Distorted sound Output is short circuit Input is overloaded Output is being over driven Bass control is turned up Check speaker loads for shorts Reduce input level at source Reduce volume levels on front panel Reduce Bass control level No sound but amp is on Volume controls down Amplifier has overheated AMC 60 AMC 120 AMC 250 only DC fuse s blown Check volume controls Check for obstructions above and below Make sure the amplifier is well ventilated Refer product to local Australian Monitor dealer No sound from channels 2 and 3 Priority function is being used Remove signal disconnect input from channel 1 OR Disable priority function see Internal Adjustments Tones do not sound when triggered Tone generator module not installed Purchase optional Tone generator module Only on AMC30 60 120 250 VOX DETECT gt CH1 TREBLE 9dB ANM 9 3098 R 19dB ei 12dB 1208 _ 2 MASTER 2 v 300B MUTE al H VOX DETECT DETECT gt SERIES INSTALLATION MANUAL THERMAL gt OPTIONAL GENERATOR lt FO 4ohm
19. er impedance AMC 30 60 AMC 120 250 333ohm 166ohm 83ohm 40 T ES TT T 115 version minimum total speaker impedance AMC 30 AMC 60 AMC 120 AMC 250 1660hm 83ohm 41ohm 20ohm DM TL LINE w amp e eS 65 ES 25 Both versions minimum total speaker impedance All models 4 ohm PAGE 6 The LINE output XLR can be used to connect up to 6 booster amplifiers Balanced wiring shielded pair cable is recommended Note When wiring the LINE output as unbalanced Pin2 should be wired as hot and Pin1 should be wired as ground shield Do not wire Pin3 REC Output The REC output wiring should be kept as short as possible Input Connections For wiring balanced in pin 2 is hot Unbalanced wiring on the microphone inputs is not recommended Balanced input wiring shielded pair cable is recommended Unbalanced RCA wiring should be keep as short as possible Female XLR Pin1 Gnd Pin3 Cold Pin2 Hot Male XLR Pin2 Hot Pin3 Cold Pin1 Gnd Tip Hot Shield Gnd AMC SERIES INSTALLATION AND OPERATION MANUAL TROUBLESHOOTING AND BLOCK DIAGRAM Troubleshooting Guide Trouble Power LED not on Likely Cause Power not reaching amplifier R
20. ifier 2 Remove the fuse holder drawer that is part of the IEC mains input socket 3 Remove the two existing fuses one of these is a spare fuse 4 Install two M205 size fuses as per the operating voltage above 5 Reinstall the drawer Page 1 of 1
21. nstructions in the literature REFER SERVICING TO QUALIFIED SERVICE PERSONAL accompanying the appliance Caution To prevent electric shock do not use this polarised plug with an extension cord receptacle or other outlet unless the blades can be fully inserted to W ARNING prevent blade exposure To prevent electric shock match wide blade of 5 plug to wide fully insert REDUCE THE RISK 0F FIRE 0R ELECTRIC SHOCK DO NOT EXPOSE THIS EQUIPMENT TO OR MOISTURE AMC SERIES INSTALLATION AND OPERATION MANUAL PAGE 3 FRONT PANEL O 120 aji OOOO Aa Australian Monitor 5 1 4 These control levels each channel input Bass There is 12dB of cut and boost at 100Hz 6 There 9dB of cut and boost at 10 2 Master This controls the overall mixed output level This LED indicates the unit 15 powered Power This switch switches power on or off the mains The up position is on PAGE 4 SERIES INSTALLATION AND MANUAL PANEL sss sa ss Sesli FUSE eje
22. ransformer AMC 250TX BR0250140 250 output transformer AMC 2500T 0250141 AMC 250 drive transformer BRO0120036 0120036 MONITOR Australian Monitor Service Bulletin Mg AMC Mixer and Booster Amplifiers Mains Fuses 20 February 2012 Applicable Models This bulletin applies to AMC 30 AMC 60 AMC 120 and 250 Mixer Amplifiers and the AMC 120P AMC 1202P and AMC 250P Booster Amplifiers manufactured prior to 2012 Known Issue The AMC range of mixer amplifiers and AMC booster amplifier have experienced a higher than acceptable incidences of mains fuse failures at turn on Details products manufactured prior to 2012 are fitted with inferior Chinese fuses Solution The problem can easily be rectified by placing the existing mains fuse with name brand quality fuses available from 14 as follows 115V Operation 230V Operation North America Australia Europe Model Fuse Rating Elementi4 Fuse Rating Element 14 AMC 30 1123115 T500mA 1123121 60 T3 15A 1123119 1 6 1123113 120 4 1123120 2 1123118 120 250 250 1123125 4 1123120 AMC 1202P All fuses are Cooper Bussman 250VAC rated slow blow ceramic HRC type M205 cartridge All future production models will be fitted with these fuses Procedure 1 Remove the mains lead from the ampl
23. wire connected to the electrical system ground Precautions should be taken so that the means of grounding of a piece of equipment is not defeated Mains voltage must be correct and the same as that printed on the rear of the unit Damage caused by connection to improper AC voltage is not covered by any warranty Have gain controls on amplifiers turned down during power up to prevent speaker damage if there are high signal levels at the inputs Power down and disconnect units from mains voltage before making connections Never hold a power switch in the ON position if it won t stay there itself Do not use the unit near stoves heat registers radiators or other heat producing devices 13 14 15 16 17 18 19 20 Do not block fan intake or exhaust ports Do not operate equipment on a surface or in an environment which may impede the normal flow of air around the unit such as a bed rug weathersheet carpet or completely enclosed rack If the unit is used in an extremely dusty or smoky environment the unit should be periodically blown free of foreign matter Do not remove the cover Removing the cover will expose you to potentially dangerous voltages There are no user serviceable parts inside Do not drive the inputs with a signal level greater than that required to drive equipment to full output Do not connect the inputs outputs of amplifiers or consoles to any other voltage source
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