AustralianMonitor-IC30-pwr-sm维修电路原理图.pdf

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1、 IC30 Series Service Manual Product Description Set-Up/Test Procedures Component Lists Full Schematics PCB Overlays Australian Monitor. Private Bag 149 Silverwater NSW 1811. Australia RadioFans.CN 收音机爱 好者资料库 .au RadioFans.CN 收音机爱 好者资料库 IC30 Circuit Description The IC30 is a 30 watt mixer amplifier w

2、hich operates on 230/240 VAC, 50Hz or 12 VDC via an external DC power supply source. The amplifier is supplied free standing with rubber feet but can be rack mounted via an optional rack mount kit (IC30RMK). The IC30 will deliver 30 watts into a load of 4 ohms, 70 volt or 100 volt line. The IC30 may

3、 be stacked to a maximum of four units high. An IEC type mains cord and receptacle are provided, the receptacle also houses the mains fuse in a drawer which pulls open to expose the fuse. A single spare fuse is also located in this drawer. AC Power Inlet The 3 pin IEC power inlet is located on the b

4、ottom left of the rear panel and accepts a standard mains power lead fitted with an IEC connector. Before plugging in a power lead, please check the rear panel of the amplifier to ensure that the voltage switch is set correctly for your part of the world. The operating voltage is 230/240 VAC 50 Hz.

5、The inlet is equipped with an inbuilt AC fuse holder fitted with a 1 amp plus a spare within the holder. Power consumption is approximately 60 VA. 12 Volt DC Operation The IC30 features optional 12VDC power to run off a battery supply if required. This is connected via the rear terminal strip. The f

6、ront panel Power Switch will not switch DC power on or off in DC operation. In this mode the amplifier is always on. When running from 12 VDC power, the LED will not illuminate. There is no trickle charge resistor across the diode. 230V/240V Slide Switch The operating voltage of the amplifier is use

7、r selectable between 230V and 240V via a slide switch located on the top left side of the rear panel. This switch should be set to match the AC voltage of your country. The mains transformer is wound with a 230V winding plus a 10V winding internally connected. Power Amp The IC30 uses two(2) Philips

8、amplifier ICs (TDA1516) with built in current overload and thermal protection. The two amplifier modules are capacitively coupled to the two primary windings of the output transformer in parallel (not in bridge). Speaker Output Terminal Strip The screw terminals in the middle of the strip allow acce

9、ss 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) COM Common or “-” for 70v or100v speaker loads (maximum load of 80 ohms at 100v)

10、70 Positive “+” for 70v line speaker loads (use with common) 100 Positive “+” for 100v line speaker loads (use with common) Please ensure that the correct “Common” is used. Low impedance and 70/100v loads can be used simultaneously but please pay careful attention to the overall speaker load. Note:

11、The minimum impedance (or maximum load) at 100 volt line should be no less than 80 Ohms Muting The last two(2) terminals on the barrier strip are for muting. Channels 2 and 3 are muted when the two mute contacts are shorted together. The muting is done by a FET switch so there is no ramping. An opti

12、onal VOX muting module (TX3010) is also available with has ramping. Phantom Power The IC30 does not have phantom power on the XLRs. Tape Output A mono RCA output connector provides a line level output with a maximum of 350mV into 10k Ohms. Signal from all three input channels are fed to the tape out

13、put. Level adjustments made to the three input channels will affect the level going to the tape output. Microphone/Line Inputs Three universal microphone/line inputs are provided. Microphone inputs are via the 3 pin XLR connectors while line inputs are via the RCA style connectors (one of each is pr

14、ovided per channel). All three inputs can be used for microphone and auxiliary input sources. It is also possible to connect both a microphone and line/aux source to the one channel simultaneously however their relative levels to one another will be fixed, as there is only one gain control per chann

15、el. The XLR connectors are wired: Pin 1: Earth. Pin 2: Active (high, +), Pin 3: Active (low, -). Microphone input sensitivity is 1.5mV at 200 ohms. The RCA connectors have an input sensitivity of 80mV at 47K ohms. Microphone Inputs All three(3) inputs are dual mic/line with microphone inputs being v

16、ia a 3 pin XLR connector per channel. The mic input sensitivity is 1.5mV 200 ohms. Pin connections are: pin 1-earth; pin 2-signal (hot +); pin 3-signal (cold -). Phantom power is not available. Reading from left to right across the rear panel, the inputs are 3, 2, & 1. Line Inputs All three(3) input

17、s are dual mic/line with line/auxiliary inputs being via mono RCA connectors per channel. Line input sensitivity is 75mV 47K ohms. Reading from left to right across the rear panel, the inputs are 3, 2, & 1. Optional Accessories Tone Generators Four separate tones are available as an optional plug in

18、 card (ATC5488). The ATC5488 is a small circuit board which simply plugs into a socket inside the amplifier. Activation is via contact closures which may be wired to the rear panel of the IC30 or to external switches or a timer. Full installation instructions are provided with the tone generator. To

19、nes available on the ATC5488 tone generator board are: Evacuation Tone (to Australian Standard AS2220.1.2) Alert Tone (to Australian Standard AS2220.1.2) Bell TonePre Announce Chime VOX Muting Module An optional VOX muting module (TX3010) is available. When installed inside the amplifier, signal on

20、channel 1 of the amplifier will automatcially mute channels 2 and 3. When there is no signal on channel 1, channels 2 and 3 will operate normally. Full installation instructions are provided with the TX3010. Rack Mouting Kit An optional rack mounting kit (IC30RMK) is available to mount the IC30 in a

21、 standard 19 equipment rack. Fuse Sizes Mains 230 VAC: 1 Amperes Slow Blow The DC fuse is located on the circuit board. This is a feature of the AMIS series amplifiers, which are equipped with a current limiting circuit preventing excessive DC currents, thus eliminating the risk of blowing high tens

22、ion fuses. In the unlikely event that the DC fuse actuates, the output IC modules should be checked, as it is probable that the amplifier has been subjected to very extreme conditions. The DC fuses are 4A time lag fuses. 12345678 A B C D 87654321 D C B A Title NumberRevisionSize A3 Date:4-Jul-2003 S

23、heet of File:C:AMIS604 ManualCD6168-1.DDBDrawn By: R49 100R P2 X5 R48 1M C37 1u C49 470u C47 10u C50 10u C46 10u C45 10u C38 2200u C41 2200u V1 BD139 D6 11V C43 100u R35 4K7 C32 47u C33 47u C35 47u C34 47u C30 0.47 C31 0.47 C36 82P C28 0.03 C29 1200P R43 50K R42 50K R41 68K R40 68K R39 0R R33 1K R45

24、 1K R44 10R R34 6K8 R31 6K8 R32 10K R30 10K R47 10K IC6 LM741 2 13 3 7 12 9 5 10 11 8 6 4 1 IC4 TDA1516 2 13 3 7 12 9 5 10 11 8 6 4 1 IC5 TDA1516 N1 F1S1 D1 C44 47u F2 C42 470u C40 2200u C39 2200u T1 D2-D5 P1 X7 T2 R38 10R R37 1K R36 1K R29 10K R28 0R R27 47K R26 1K 5 6 7 IC2B LM1458 C27 1u C26 1u C

25、25100P C23 1u C22 1u C24 1u C14 1u R16 100R R17 10K 43 5 IC3C 4066 12 13 IC3A 4066 R25 47K 3 2 1 84 IC2ALM1458C21 1u C20 330P C19 1u C18 330P C17 1u C16 1u C15 1u R24 4K7 R2322K R22 10R R21 22K R20 680R R19 680R R18 47k R9 47k R10 680R R11 680R R12 22K R1322K R14 4K7 C8 1u C9 1u C10 1u C11 330P C12

26、330P C13 1u 5 6 7 IC1BLM1458 R15 47K R8 47K 3 2 1 84 IC1ALM1458C7 1u C6 330P C5 1u C4 330P C3 1u C2 1u C1 1u R7 4K7 R622K R5 10R R4 22K R3 680R R2 680R R1 47k R5010R D GRD +14VDC +5V +5V +10V +10V +5V +5V +10V +10V +5V 7 6 4 3 2 70V 4 OHM +14VDC +14VDC SBG 11 IC30 MIX/POWER PCB MIC3 AUX3 MIC2 AUX2 M

27、IC1 AUX1 240VAC +12V BATTERY +12V MUTE +14V TAPE OUT PIN 14 4066C 100V C CD6168-1 +10V +5V 4A SB 0.5A SB IC30 Parts List Designator Part TypeDescriptionManufacturers Code C11uElectrolytic capacitor 63V2121280010 C101uElectrolytic capacitor 63V2121280010 C11330PMulti layer ceramic capacitor 100V21271

28、81331 C12330PMulti layer ceramic capacitor 100V2127181331 C131uElectrolytic capacitor 63V2121280010 C141uElectrolytic capacitor 63V2121280010 C151uElectrolytic capacitor 63V2121280010 C161uElectrolytic capacitor 63V2121280010 C171uElectrolytic capacitor 63V2121280010 C18330PMulti layer ceramic capac

29、itor 100V2127181331 C191uElectrolytic capacitor 63V2121280010 C21uElectrolytic capacitor 63V2121280010 C20330PMulti layer ceramic capacitor 100V2127181331 C211uElectrolytic capacitor 63V2121280010 C221uElectrolytic capacitor 63V2121280010 C231uElectrolytic capacitor 63V2121280010 C241uElectrolytic c

30、apacitor 63V2121280010 C25100PMulti layer ceramic capacitor 100V2127181101 C261uElectrolytic capacitor 63V2121280010 C271uElectrolytic capacitor 63V2121280010 C280.03Multi layer ceramic capacitor 100V2124292330 C291200PMulti layer ceramic capacitor 100V2127181122 C31uElectrolytic capacitor 63V212128

31、0010 C300.47Metalised Poly Capacitor 2124262472 C310.47Electrolytic capacitor 63V2124262472 C3247uElectrolytic capacitor 35V2121230470 C3347uElectrolytic capacitor 35V2121230470 C3447uElectrolytic capacitor 35V2121230470 C3547uElectrolytic capacitor 35V2121230470 C3682PMulti layer ceramic capacitor

32、100V2127181820 C371uElectrolytic capacitor 63V2121280010 C382200uElectrolytic capacitor 35V2121220222 C392200uElectrolytic capacitor 35V2121220222 C4330PMulti layer ceramic capacitor 100V2127181331 C402200uElectrolytic capacitor 35V2121220222 C412200uElectrolytic capacitor 35V2121220222 C42470uElect

33、rolytic capacitor 35V2121230471 C43100uElectrolytic capacitor 100V2121220101 C4447uElectrolytic capacitor 35V2121230470 C4510uElectrolytic capacitor 50V2121250100 C4610uElectrolytic capacitor 50V2121250100 C4710uElectrolytic capacitor 50V2121250100 C49470uElectrolytic capacitor 35V2121230471 C51uEle

34、ctrolytic capacitor 63V2121280010 C5010uElectrolytic capacitor 50V2121250100 C6330PMulti layer ceramic capacitor 100V2127181331 C71uElectrolytic capacitor 63V2121280010 C81uElectrolytic capacitor 63V2121280010 C91uElectrolytic capacitor 63V2121280010 D1Diode 1N54082133450408 D2-D5Diode 1N54082133450

35、408 D612VZener Diode 1W 12V 1N47422136010120 F1.5A 0.5 Amp Anti-surge Fuse2543210059 F24.0A4.0 Amp Anti-surge Fuse2541210840 IC1LM1458IC Dual Op Amp DIP82152870558 IC2LM1458IC Dual Op Amp DIP82152870558 IC34066I.C. CD 4066BCN VCA (14 PIN)2159440066 IC4TDA1516Amplifier IC TDA1516BQ2153121516 IC5TDA15

36、16Amplifier IC TDA1516BQ2153121516 IC6LM741LM741 IC 2152080741 P1X7Transistor BD1392141400139 P2X5Transistor BD1392141400139 R147kResistor, metalfilm .5W9111590473 R10680RResistor, metalfilm .5W9111590681 R11680RResistor, metalfilm .5W9111590681 R1222KResistor, metalfilm .5W9111590223 R1322KResistor

37、, metalfilm .5W9111590223 R144K7Resistor, metalfilm .5W9111590472 R1550KPotentiometer linear2021000503 R16100RResistor, metalfilm .5W9111590101 R1710KResistor, metalfilm .5W9111590103 R1847kResistor, metalfilm .5W9111590473 R19680RResistor, metalfilm .5W9111590681 R2680RResistor, metalfilm .5W911159

38、0681 R20680RResistor, metalfilm .5W9111590681 R2122KResistor, metalfilm .5W9111590223 R2210RResistor, metalfilm .5W9111590100 R2322KResistor, metalfilm .5W9111590223 R244K7Resistor, metalfilm .5W9111590472 R2550KPotentiometer linear2021000503 R261KResistor, metalfilm .5W9111590102 R2747KResistor, me

39、talfilm .5W9111590473 R280RResistor, metalfilm .5W9111590000 R2910KResistor, metalfilm .5W9111590103 R3680RResistor, metalfilm .5W9111590681 R3010KResistor, metalfilm .5W9111590103 R316K8Resistor, metalfilm .5W9111590682 R3210KResistor, metalfilm .5W9111590103 R331KResistor, metalfilm .5W9111590102

40、R346K8Resistor, metalfilm .5W9111590682 R354K7Resistor, metalfilm .5W9111590472 R361KResistor, metalfilm .5W9111590102 R371KResistor, metalfilm .5W9111590102 R3810RResistor, metalfilm .5W9111590100 R390RResistor, metalfilm .5W9111590000 R422KResistor, metalfilm .5W9111590223 R4068KResistor, metalfil

41、m .5W9111590683 R4168KResistor, metalfilm .5W9111590683 R4250KPotentiometer linear2021000503 R4350KResistor, metalfilm .5W2021000503 R4410RResistor, metalfilm .5W9111590100 R451KResistor, metalfilm .5W9111590102 R4710KResistor, metalfilm .5W9111590103 R481MResistor, metalfilm .5W9111590104 R49100RRe

42、sistor, metalfilm .5W9111590101 R510RResistor, metalfilm .5W9111590100 R5010RResistor, metalfilm .5W9111590100 R622KResistor, metalfilm .5W9111590223 R74K7Resistor, metalfilm .5W9111590472 R850KPotentiometer linear2021000503 R947kResistor, metalfilm .5W9111590473 S1Rocker switch SPST2511213112 WORK

43、INSTRUCTION Testing of IC 30 1. Perform physical inspection ( Visual Inspection stage ) 1.1 Check : All screws for tightness ( esp. H/S & IC fixing). Capacitors for polarity. Earth connection for good contact (XLR gnd to AC earth), including earthing of RCAs, All wiring points for good contacts (Sol

44、dering and Crimping) 2. Set up amplifier for test (Pre (PCB testing) ). 2.1 Connect amplifier to : Variac (0 Vac) Signal generator (Mic 1, no signal), Resistive load (4ohm on 4ohm output). 2.2 Reset controls : Volume controls to minimum, Bass/treble control to center, Phantom power switch to off, 3.

45、 Power up (Pre (PCB testing). 3.1 Turn on power switch and adjust voltage to 120VAC. Watch current meter for excess current draw. 3.2 Check DC power supply at fuse. Should be approximately. 7V ( + 1V ) 3.3 Check DC voltage on mixer board. Should be approximately. 6V (Check on 8 No. Pin of 1458). 3.4

46、 Adjust variac to 240VAC. Check DC power supply. Should be approx. 15V (+ 1V) loaded, no load (16.5V + 1V). 3.5 Check DC voltage on mixer board. Should be approx. (11V + 1V). 4. AC Check (Final stage). 4.1 Set signal generator to (1mV) + 0.2mV. Turn up Mic1 volume control to full. Watch for irregula

47、rities with output. Check sensitivity of input. MIC 1mV (+ 0.2mV) in 10.5Vrms out (2.6% THD). 4.2 Measure 100V line, 70V line, tol. 5% 4.3 Check tape output (0.4V + 100mV). 4.4 Check Bass control 100HZ = + 12dB (can get only upto 8V O/P with total swing of (20 24dB) ) and treble 10KHz = + 10dB (tole

48、rance. 10%) total swing (18 22dB). 5. Function Checks (Final stage). 5.1 Move signal generator to Mic2. Turn up volume control. Watch for irregularities. Check for 10.5V out. 5.2 Move signal generator to Mic3. Turn up volume control. Watch for irregularities. Check for 10.5V out. 6. Line level input

49、s (Final stage). 6.1 Connect signal generator to Line1 input. Check input sensitivity LINE (85mV + 20mV) in 10.5V out. 6.2 Move signal generator to Line2 input. Check 10.5V out. 6.3 Move signal generator to Line3 input. Check 10.5V out. 6.4 Check muting function by shorting mute terminals on rear barrier strip. 6.5 Check operation of (230 240)V selector switch for full wattage in each position of switch. 6.6 Frequency Response Check the frequency response and power bandwidth of 1st se