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AUSTRALIAN MONITOR AMIS120 Series, Service Manual, Page: 15 / 26

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AUSTRALIAN MONITOR AMIS120 Series Service Manual Download Page 15

Summary of Contents for AMIS120 Series

Page 1: ...120 Series Service Manual Product Description Set Up Test Procedures Component Lists Full Schematics PCB Overlays Australian Monitor Private Bag 149 Silverwater NSW 1811 Australia www australianmonitor com au ...

Page 2: ...is equipped with an inbuilt AC fuse holder fitted with an 8 amp fuse AMIS120 or a 4 amp fuse AMIS60 plus a spare within the holder Power consumption is approximately 125 VA for the AMIS60 and 250VA for the AMIS120 24 Volt DC Power Inlet The AMIS60 AMIS120 feature optional 24VDC power to run off a battery supply if required This is connected via the rear terminal strip The front panel Power Switch ...

Page 3: ... load at 100 volt line should be no less than 80 Ohms for the ACM120 and no less than 160 Ohms for the AMIS60 115V version The screw terminals on the left hand side of the strip allow access to the direct speaker outputs of the amplifier Reading from left to right the terminals are COM Common or for low impedance speaker loads 4 or 8 ohms 4 Positive for 4 ohm speaker loads use with common AMIS120 ...

Page 4: ...wer Button This button enables or disables the 15 volts DC phantom power to all microphone XLRs Do not plug an unbalanced microphone in to any amplifier or mixer when phantom power is switched on The phantom voltage is connected through 4k7 1 4W resistors The maximum current draw available per microphone is approximately 3mA Line Output The balanced XLR line level output provides a maximum of 700m...

Page 5: ...owing muting to occur without operation of the relay The relay outputs are C Common NO Normally Open and NC Normally Closed The NO or NC selection provides the installer with the option of the relay either opening or closing a contact This feature is normally used in conjunction with relay override attenuators volume controls In this application the relay output could trigger an accessory power su...

Page 6: ...s except for inputs 1 and 2 will automatically mute The level of the tone generator is controlled by the pot labelled R6 located behind the Bass adjustment pot This pot adjusts the level for all 4 tones Tones available on the AMIS60 and AMIS120 include Evacuation Tone Alert Tone Bell Tone Pre Announce Chime Theses inputs are pulled up to 5VDC internally through 1k resistors The tones are generated...

Page 7: ... C13 through R37 2k2 Note that VCA will mute at 250mV 80dB below the reference voltage so the muting will occur only over the range of approximately depends on VCA production batch 7 2V to 7 5V The charging of the capacitor occurs from approximately 1V to 8 1V VCA M5222P pin out 1 Output1 2 Input1 3 Reference voltage Vcc 4 Gnd 5 Control 6 Input2 7 Output2 Note The M5222P is a current in current ou...

Page 8: ... 3 2 Check DC power supply at fuses Should be approx 34V 1 5V 3 4 Check DC voltage on mixer board Should be approx 15V 0 5V 3 5 Check 1 2 VCC on mixer board should be 8 VDC 0 5 3 6 Measure DC voltages on IC of mixer input PCB s p8 15V 5 p4 0V 100mV pl 8V 5 but on power it should be P8 18V 5 other remain same 3 7 Put a multimeter across R30 the meter should read 1 0mV 5 then slowly adjust the prese...

Page 9: ...for rated out put power out put signal will clip up to 2 FINAL TESTING Requirements for final testing a Load 40Ω b Multimeter c Oscilloscope d Microphone e Variac 6 Check sensitivity of all channel Optional 6 1 Mic input CH1 CH4 1mV out put 70V 5V 6 2 AUX input CH1 CH3 150mV out put 70V 5V 6 3 AUX input CH4 150mV out put 32 5V 1 5V 6 4 Check the Power bandwidth 68Hz 5Hz 15KHz 2KHz 6 5 Check Bass c...

Page 10: ... a A CD Player b Speaker c Microphone 15 Connect amplifier to the signal source and the speaker 15 1Set all tone pots at center position switch on the amplifier and check for any turn on thump 15 2 Connect the CD Player to an Auxiliary input channel 4 15 3 Set all Channel Pots at the minimum fully counter clockwise position 15 4 Increase the level on the channel that has the program source connect...

Page 11: ...R1 IC1A LM1458 C1 470n V7 BC639 V3 BD140 V9 TIP42C V1 TIP36C R11 1k R22 1k V5 TIP36C V10 TIP42C V8 BC639 C6 470n C5 4u7 IC1B LM1458 R17 470R R20 10k R19 1k R16 3k3 R34 100R R14 47k R15 10k R21 1M R24 1k V4 BD140 V11 BC639 R8 330R R18 330R R29 100K R27 1k D1 BAV21 D4 BAV21 V12 BC640 C9 10n R28 560R D3 BAV21 D2 BAV21 R12 2k2 R23 2k2 C12 22P C13 22P V13 BC639 R35 22K R36 470k D6 1N4004 D7 1N4004 C14 ...

Page 12: ...00k C43 47u C45 47u C47 22u IC9 7805 C48 10u VCC VDD VCC VCC IC1B 1458 IC4 M5222 R1 10K R2 100k R3 10K R11 1M R12 47k R17 100k D5 D9 BAV21 C4 4u7 C5 4u7 C8 4u7 C13 47u C14 33p C15 33p VCC R10 470R R21 120k R22 100k VCC R43 1M C20 1u D3 IC10A LM358a R16 100k R20 15k R53 4k7 VCC R55 10k V1 BC546 R5 2k2 R62 47k R63 47k IC10B LM358b VCC C31 4u7 IC7B LM1458 IC7A LM1458 R51 1k R54 1k R56 1k R57 1k R58 4...

Page 13: ...R R15 680R R16 680R R17 100K R4 220K R12 22K R18 22K R19 22K R20 22K R21 680R R22 680R C4 4u7 C5 100P C6 100P C7 100P C8 100P C12 4u7 C16 4u7 C17 100P C18 100P C19 100P C20 100P C21 4u7 1R 2R 3R 4R R C25 4u7 C26 4u7 L R31 10K R32 10K R33 1K R34 1K R35 47K R36 47K R37 10R IC3A LM1458 C27 4u7 C28 4u7 C29 4u7 IC3B LM1458 C30 4u7 C31 4u7 D1 C32 4u7 1 XLR 2 XLR RX 100K T1 600 600ohm C14 4u7 C15 4u7 C13...

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Page 17: ...101 CX1 22n 400V metalised Polyproplyene 275V 2124192022 CX2 220n metalised Polypropylene 275v D1 BAV21 Small signal diode 2133400201 D11 2V7 Diode zener 1 2w 2V7 2136090279 D12 BAV21 Small signal diode 2133400201 D2 BAV21 Small signal diode 2133400201 D3 BAV21 Small signal diode 2133400201 D4 BAV21 Small signal diode 2133400201 D5 1N4004 Rectifier Diode 400V 1A 2133440004 D6 1N4004 Rectifier Diod...

Page 18: ...und resistor 2111450228 PW5 R22 R42 0R22 PW5 5W wire wound resistor 2111450228 PW5 R22 R43 1K 1 2 W Metal film resistor 9111590102 R44 1K 1 2 W Metal film resistor 9111590102 R45 4K7 1 2 W Metal film resistor 9111590472 R46 4K7 1 2 W Metal film resistor 9111590472 R47 10K 1 2 W Metal film resistor 9111590103 R48 10K 10k NTC thermistor 2111911103 R49 2K7 1 2 W Metal film resistor 9111590272 R5 10k ...

Page 19: ...V9 TIP42C Transistor 2141300042 TIP42C X1 SIL6 X2 SIL2 ...

Page 20: ...er Disc Ceramic 2127181122 C3 4u7 Electrolytic 35V 2121230479 C31 4u7 Electrolytic 35V 2121230479 C35 2u2 Electrolytic 63V 2121260229 C36 2u2 Electrolytic 63V 2121260229 C37 2u2 Electrolytic 63V 2121260229 C38 4u7 Electrolytic 35V 2121230479 C39 470u Electrolytic 35V 2121230471 C4 4u7 Electrolytic 35V 2121230479 C41 22P Multilayer Disc Ceramic 2127181220 C42 22P Multilayer Disc Ceramic 2127181220 ...

Page 21: ...32 R15 4K7 1 2W Metal film resistor 9111590473 R16 100k 1 2W Metal film resistor 9111590104 R17 100k 1 2W Metal film resistor 9111590104 R18 1K 1 2W Metal film resistor 9111590102 R19 1K 1 2W Metal film resistor 9111590102 R2 100k 1 2W Metal film resistor 9111590104 R20 15k 1 2W Metal film resistor 9111590153 R21 120k 1 2W Metal film resistor 9111590124 R22 100k 1 2W Metal film resistor 9111590104...

Page 22: ... 2W Metal film resistor 9111590473 R63 47k 1 2W Metal film resistor 9111590473 R64 10k 1 2W Metal film resistor 9111590103 R65 Resistor pack 1K ohms 2111886102 R66 Resistor pack 1K ohms 2111886102 R67 Resistor pack 1K ohms 2111886102 R68 Resistor pack 1K ohms 2111886102 R69 Resistor pack 1K ohms 2111886102 R7 10k 1 2W Metal film resistor 9111590103 R70 Resistor pack 1K ohms 2111886102 R71 Resistor...

Page 23: ...Multi Layer Ceramic 100V 2127181101 C21 4u7 Electrolytic 35V 2121230479 C22 4u7 NP Non Polar Electrolytic 50V 2120250479 C23 4u7 NP Non Polar Electrolytic 50V 2120250479 C24 4u7 NP Non Polar Electrolytic 50V 2120250479 C25 4u7 Electrolytic 35V 2121230479 C26 4u7 NP Non Polar Electrolytic 50V 2120250479 C27 4u7 Electrolytic 35V 2121230479 C28 4u7 NP Non Polar Electrolytic 50V 2120250479 C29 4u7 NP ...

Page 24: ...lm resistor 9111590100 R28 0R 1 2watt Metal film resistor 9111590000 R29 4k7 1 2watt Metal film resistor 9111590472 R3 100K 1 2watt Metal film resistor 9111590104 R30 4k7 1 2watt Metal film resistor 9111590472 R31 10K 1 2watt Metal film resistor 9111590103 R32 10K 1 2watt Metal film resistor 9111590000 R33 1K 1 2watt Metal film resistor 9111590102 R34 1K 1 2watt Metal film resistor 9111590102 R35 ...

Page 25: ... AMIS60 Output S5728MAN60PS22 25 44 Semiconductors TIP36C PNP TO3P transistor 2141600036 TIP36C 3 60 TIP42C PNP TO220 transistor 2141300042 TIP42C 2 01 BC639 NPN TO92 2144200639 S7007 0 16 BC640 PNP TO92 2144200640 S7008 0 16 BD140 PNP TO92 2141400140 0 22 BD139 NPN TO92 2141400139 S7009 0 22 LM1458 IC Dual Op amp 2152801048 LM1458 0 27 LM833N IC Dual Op amp 2157800833 LM833 1 05 LM358 IC Dual Op ...

Page 26: ...00000133 12 28 Chassis 60 S600000133 12 28 Barrier Strip 12 2583528312 3 92 Phono connector 1 4 socket 2582110645 0 86 XLRF 2587210266 1 34 XLMR 2587110227 1 08 Screw washer Black screw w star 2316420308 0 08 Screw Black screw wo star 2316421306 0 08 Knob volume master 9346110015 0 12 Acrylic cover for 9347560012 0 31 12 way terminal ...

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