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 whi

2、ch 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 b

3、e 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 bot

4、tom 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. Th

5、e 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 fro

6、nt 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 user

7、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 am

8、plifier 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 access

9、 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) 70

10、 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: Th

11、e 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 option

12、al 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 outpu

13、t. 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 prov

14、ided 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 channel

15、. 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 via

16、 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) inputs

17、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 c

18、ard (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. Tone

19、s 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 ch

20、annel 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 s

21、tandard 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 tensio

22、n 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. 12345678ABCD87654321DCBATitleNumberRevisionSizeA3Date:4-Jul-2003 Sheet of File:C:

23、AMIS604 ManualCD6168-1.DDBDrawn By:R49100RP2X5R481MC371uC49470uC4710uC5010uC4610uC4510uC382200uC412200uV1BD139D611VC43100uR354K7C3247uC3347uC3547uC3447uC300.47C310.47C3682PC280.03C291200PR4350KR4250KR4168KR4068KR390RR331KR451KR4410RR346K8R316K8R3210KR3010KR4710KIC6LM74121337129510118641IC4TDA1516213

24、37129510118641IC5TDA1516N1F1S1D1C4447uF2C42470uC402200uC392200uT1D2-D5P1X7T2R3810RR371KR361KR2910KR280RR2747KR261K567IC2BLM1458C271uC261uC25100PC231uC221uC241uC141uR16100RR1710K435IC3C40661213IC3A4066R2547K32184IC2ALM1458C211uC20330PC191uC18330PC171uC161uC151uR244K7R2322KR2210RR2122KR20680RR19680RR1

25、847kR947kR10680RR11680RR1222KR1322KR144K7C81uC91uC101uC11330PC12330PC131u567IC1BLM1458R1547KR847K32184IC1ALM1458C71uC6330PC51uC4330PC31uC21uC11uR74K7R622KR510RR422KR3680RR2680RR147kR5010RDGRD+14VDC+5V+5V+10V+10V+5V+5V+10V+10V+5V7643270V4 OHM+14VDC+14VDCSBG11IC30 MIX/POWER PCBMIC3AUX3MIC2AUX2MIC1AUX1

26、240VAC+12VBATTERY+12VMUTE+14VTAPE OUTPIN 14 4066C100VCCD6168-1+10V+5V4A SB0.5A SBIC30 Parts ListDesignator Part TypeDescriptionManufacturers CodeC11uElectrolytic capacitor 63V2121280010C101uElectrolytic capacitor 63V2121280010C11330PMulti layer ceramic capacitor 100V2127181331C12330PMulti layer cera

27、mic capacitor 100V2127181331C131uElectrolytic capacitor 63V2121280010C141uElectrolytic capacitor 63V2121280010C151uElectrolytic capacitor 63V2121280010C161uElectrolytic capacitor 63V2121280010C171uElectrolytic capacitor 63V2121280010C18330PMulti layer ceramic capacitor 100V2127181331C191uElectrolyti

28、c capacitor 63V2121280010C21uElectrolytic capacitor 63V2121280010C20330PMulti layer ceramic capacitor 100V2127181331C211uElectrolytic capacitor 63V2121280010C221uElectrolytic capacitor 63V2121280010C231uElectrolytic capacitor 63V2121280010C241uElectrolytic capacitor 63V2121280010C25100PMulti layer c

29、eramic capacitor 100V2127181101C261uElectrolytic capacitor 63V2121280010C271uElectrolytic capacitor 63V2121280010C280.03Multi layer ceramic capacitor 100V2124292330C291200PMulti layer ceramic capacitor 100V2127181122C31uElectrolytic capacitor 63V2121280010C300.47Metalised Poly Capacitor 2124262472C3

30、10.47Electrolytic capacitor 63V2124262472C3247uElectrolytic capacitor 35V2121230470C3347uElectrolytic capacitor 35V2121230470C3447uElectrolytic capacitor 35V2121230470C3547uElectrolytic capacitor 35V2121230470C3682PMulti layer ceramic capacitor 100V2127181820C371uElectrolytic capacitor 63V2121280010

31、C382200uElectrolytic capacitor 35V2121220222C392200uElectrolytic capacitor 35V2121220222C4330PMulti layer ceramic capacitor 100V2127181331C402200uElectrolytic capacitor 35V2121220222C412200uElectrolytic capacitor 35V2121220222C42470uElectrolytic capacitor 35V2121230471C43100uElectrolytic capacitor 1

32、00V2121220101C4447uElectrolytic capacitor 35V2121230470C4510uElectrolytic capacitor 50V2121250100C4610uElectrolytic capacitor 50V2121250100C4710uElectrolytic capacitor 50V2121250100C49470uElectrolytic capacitor 35V2121230471C51uElectrolytic capacitor 63V2121280010C5010uElectrolytic capacitor 50V2121

33、250100C6330PMulti layer ceramic capacitor 100V2127181331C71uElectrolytic capacitor 63V2121280010C81uElectrolytic capacitor 63V2121280010C91uElectrolytic capacitor 63V2121280010D1Diode 1N54082133450408D2-D5Diode 1N54082133450408D612VZener Diode 1W 12V 1N47422136010120F1.5A 0.5 Amp Anti-surge Fuse2543

34、210059F24.0A4.0 Amp Anti-surge Fuse2541210840IC1LM1458IC Dual Op Amp DIP82152870558IC2LM1458IC Dual Op Amp DIP82152870558IC34066I.C. CD 4066BCN VCA (14 PIN)2159440066IC4TDA1516Amplifier IC TDA1516BQ2153121516IC5TDA1516Amplifier IC TDA1516BQ2153121516IC6LM741LM741 IC 2152080741P1X7Transistor BD139214

35、1400139P2X5Transistor BD1392141400139R147kResistor, metalfilm .5W9111590473R10680RResistor, metalfilm .5W9111590681R11680RResistor, metalfilm .5W9111590681R1222KResistor, metalfilm .5W9111590223R1322KResistor, metalfilm .5W9111590223R144K7Resistor, metalfilm .5W9111590472R1550KPotentiometer linear20

36、21000503R16100RResistor, metalfilm .5W9111590101R1710KResistor, metalfilm .5W9111590103R1847kResistor, metalfilm .5W9111590473R19680RResistor, metalfilm .5W9111590681R2680RResistor, metalfilm .5W9111590681R20680RResistor, metalfilm .5W9111590681R2122KResistor, metalfilm .5W9111590223R2210RResistor,

37、metalfilm .5W9111590100R2322KResistor, metalfilm .5W9111590223R244K7Resistor, metalfilm .5W9111590472R2550KPotentiometer linear2021000503R261KResistor, metalfilm .5W9111590102R2747KResistor, metalfilm .5W9111590473R280RResistor, metalfilm .5W9111590000R2910KResistor, metalfilm .5W9111590103R3680RRes

38、istor, metalfilm .5W9111590681R3010KResistor, metalfilm .5W9111590103R316K8Resistor, metalfilm .5W9111590682R3210KResistor, metalfilm .5W9111590103R331KResistor, metalfilm .5W9111590102R346K8Resistor, metalfilm .5W9111590682R354K7Resistor, metalfilm .5W9111590472R361KResistor, metalfilm .5W911159010

39、2R371KResistor, metalfilm .5W9111590102R3810RResistor, metalfilm .5W9111590100R390RResistor, metalfilm .5W9111590000R422KResistor, metalfilm .5W9111590223R4068KResistor, metalfilm .5W9111590683R4168KResistor, metalfilm .5W9111590683R4250KPotentiometer linear2021000503R4350KResistor, metalfilm .5W202

40、1000503R4410RResistor, metalfilm .5W9111590100R451KResistor, metalfilm .5W9111590102R4710KResistor, metalfilm .5W9111590103R481MResistor, metalfilm .5W9111590104R49100RResistor, metalfilm .5W9111590101R510RResistor, metalfilm .5W9111590100R5010RResistor, metalfilm .5W9111590100R622KResistor, metalfi

41、lm .5W9111590223R74K7Resistor, metalfilm .5W9111590472R850KPotentiometer linear2021000503R947kResistor, metalfilm .5W9111590473S1Rocker switch SPST2511213112 WORK INSTRUCTION Testing of IC 30 1. Perform physical inspection ( Visual Inspection stage ) 1.1 Check : All screws for tightness ( esp. H/S &

42、 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 (Soldering and Crimping) 2. Set up amplifier for test (Pre (PCB testing) ). 2.1 Connect amplifier to : Variac (0 Vac) Signal generator (Mic 1

43、, 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. 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 Che

44、ck 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 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

45、 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 irregularities 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.

46、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 (tolerance. 10%) total swing (18 22dB). 5. Function Checks (Final stage). 5.1 Move signal generator to Mic2. Turn up volume control. Watch for

47、 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 inputs (Final stage). 6.1 Connect signal generator to Line1 input. Check input sensitivity LINE (85mV + 20mV) in 10.5V out. 6.2 Move signal ge

48、nerator 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

49、the frequency response and power bandwidth of 1st set of every new batch of production. Frequency Response (250Hz 10kHz). Power band (250Hz 6.5kHz). 7. Finishing up (Final stage). 7.1 Short output and check that signal cuts out and returns after short is removed. 7.2 Remove input signal and check fo

50、r Hum and Noise (20m Vrms) 7.3 Connect 12V DC to rear barrier strip, turn off power switch. Check signal remains. 7.4 Reset volumes to minimum. 7.5 Disconnect from test bench and inspect for scratches on external paint. 8. Burn In. 8.1 Leave units on (with lid) for 24 hrs. 9. Sound Test (Check Fuse