Lincoln Electric INVERTEC SVM101-B Service Manual Download Page 70

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V300-I

TROUBLESHOOTING & REPAIR

7. Test for 0 VDC between leads 311 and 313 on

Protection Board.

a. If 0-1 VDC is present, the Protection Board is

OK. Go to step 8.

b. If 15 VDC is present, go to step 11.

F-40

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OVERVOLTAGE PROTECTION DC TRIGGER CIRCUIT TEST (cont.)

FIGURE F.17 — PROTECTION BOARD TEST POINT

PROTECTION

L7915

306

313

275F

311

J15

Summary of Contents for INVERTEC SVM101-B

Page 1: ...NS CON TAINED THROUGHOUT And most importantly think before you act and be careful SERVICE MANUAL For use with machines having Code Number 9825 THRU 10450 Return to Master TOC Return to Master TOC Retu...

Page 2: ...NJURY OR DEATH KEEP CHILDREN AWAY PACEMAKER WEARERS SHOULD CONSULT WITH THEIR DOCTOR BEFORE OPERATING Read and understand the following safety highlights For additional safety information it is strong...

Page 3: ...ver dip the electrode in water for cooling 3 h Never simultaneously touch electrically hot parts of electrode holders connected to two welders because voltage between the two can be the total of the o...

Page 4: ...If this is not possible cover them to prevent the welding sparks from starting a fire Remember that welding sparks and hot materials from welding can easily go through small cracks and openings to ad...

Page 5: ...soudage l aide d crans appropri s et non inflammables 4 Des gouttes de laitier en fusion sont mises de l arc de soudage Se prot ger avec des v tements de protection libres de l huile tels que les gant...

Page 6: ...OR ALL SECTIONS Safety i iv Installation Section A Operation Section B Accessories Section C Maintenance Section D Theory of Operation Section E Troubleshooting and Repair Section F Electrical Diagram...

Page 7: ...n to Master TOC V300 I Section A 1 Section A 1 TABLE OF CONTENTS INSTALLATION SECTION Installation Section A Technical Specifications A 2 Location A 3 Electrical Installation A 3 Input Connections A 4...

Page 8: ...3 Volts at Rated Duty Cycle Amps Amperes 60 Duty Cycle 200 28 100 Duty Cycle 165 26 5 Welding Constant Open Auxiliary Current Range Circuit Voltage Power 5 200 Amps 60 70 VDC 42 VAC 5 5 Amps 24 VAC 1...

Page 9: ...sses It is designed to be used with the LN 25 and LN 7 semiautomatic wire feeders ELECTRIC SHOCK can kill Have an electrician install and ser vice this equipment Turn the input power off at the fuse b...

Page 10: ...99 and S19309 or S19405 in Section F of this manual 4 Place the local remote switch in the remote posi tion if output control is desired at the wire feeder rather than the Invertec LN 25 must have K43...

Page 11: ...d pendant type GMAW Pulsing option for the V300 I Power Source See the Mig Pulser s IM manual IM555 for connection information K900 1 DC TIG STARTER CONNECTION This versatile new kit was made to mate...

Page 12: ...5 rated Duty Length Up 61 76m Cycle Current 61m 200 ft 200 250 ft 100 250 1 0 1 0 60 300 1 0 2 0 Quick Disconnect Plugs A quick disconnect system is used for the welding cable connections The welding...

Page 13: ...urn to Master TOC Return to Master TOC Return to Master TOC V300 I Section B 1 Section B 1 TABLE OF CONTENTS OPERATION SECTION Operation Section B Operating Instructions B 2 Controls and Settings B 2...

Page 14: ...sion Keep flammable material away Do not weld on closed containers ARC RAYS can burn eyes and skin Wear eye ear and body protection See additional warning information at front of this operator s manua...

Page 15: ...igger to energize the welding ter minals ARC FORCE INDUCTANCE CONTROL This control functions in all modes except GTAW For CC modes this control acts as an Arc Force adjust ment The arc is soft at the...

Page 16: ...h does not change the welding polarity AUXILIARY POWER A 24 VAC 1 amp supply is included for use with the LN 25 wire feeder 24 volts needed for K431 and K432 options This supply is protected by a self...

Page 17: ...Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC V300 I Section C 1 Section C 1 TABLE OF CONTENTS ACCESSORIES SECTION Accessories Section C Options Accessories C 2...

Page 18: ...control circuitry to a 6 pin receptacle and to a 14 pin receptacle Adapter per mits remote output control of Invertec by means of K857 Remote Control K812 Hand Amptrol or K870 Foot Amptrol Allows rem...

Page 19: ...TOC Return to Master TOC V300 I Section D 1 Section D 1 TABLE OF CONTENTS MAINTENANCE SECTION Maintenance Section D Input Filter Capacitor Discharge Procedure D 2 Preventive maintenance D 3 Overload T...

Page 20: ...eck voltage across terminals of all capacitors with a DC voltmeter Polarity of capacitor termi nals is marked on PC board above terminals Voltage should be zero If any voltage remains repeat this capa...

Page 21: ...em is fixed by the new board reinstall the old board and see if the problem reoccurs If the problem does not reoccur check the wiring harness and plugs for loose connec tions PREVENTIVE MAINTENANCE 1...

Page 22: ...to Master TOC Return to Master TOC Return to Master TOC FIGURE D 2 LOCATION OF MAINTENANCE COMPONENTS ITEM COMPONENT QTY NO PC BOARDS CONTROL 1 1 DRIVER 1 2 PROTECTION 1 3 SWITCH 2 7 POWER 1 10 INPUT...

Page 23: ...TCTION H5 LINE SWITCH INPUT RECTIFIER AC1 AC2 AC3 A LEAD AUXILIARY TRANSFORMER TO WIREFEEDER 18VAC 24VAC POWERBOARD 24VDC PULSE TRAIN DRIVER BOARD PRE CHARGE PRE CHARGE 2ND STEP PWM 1ST STEP PWM VOLTA...

Page 24: ...rol Board and a 24v d c supply to the Driver Board to operate the Pre charge Relays E 2 E 2 Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC...

Page 25: ...phase or three phase and pass that information to the Control Board The maximum output of the machine will be limited to approximately 250 amps with single phase input and 360 amps with 3 phase input...

Page 26: ...r Signals from the Current Transformer insure that one switch circuit is turned off before the other is gated on Field Effect Transistor operation and Pulse Width Modulation are discussed in more deta...

Page 27: ...ting determines which feedback signal voltage or current will have the most relevance However both signals are used in all modes The Control Board also monitors signals from the ther mostats and the P...

Page 28: ...shows the FET in an active mode When the gate signal a positive DC voltage relative to the source is applied to the gate terminal of the FET it is capable of conducting current A voltage supply con ne...

Page 29: ...ow much time is devoted to conduction in the positive and negative portions of the cycle Changing the pulse width is known as MODULA TION Pulse Width Modulation PWM is the varying of the pulse width o...

Page 30: ...roblem or air obstruction must also be corrected PROTECTIVE CIRCUITS Protective circuits are designed into the Invertec machine to sense trouble and shut down the machine before the trouble damages th...

Page 31: ...lter Capacitor Discharge Procedure F 11 Output Pilot Circuit Test F 13 Protection Board Output Test F 17 Capacitor Balance Test F 21 Switch Board Test F 25 Snubber Resistor Test F 29 Output Diode Test...

Page 32: ...s the obvious external possibilities that may contribute to the machine symptom Perform these tests checks in the order listed In general these tests can be con ducted without removing the case wrap a...

Page 33: ...Remove the PC board from the static shielding bag and place it directly into the equipment Don t set the PC board on or near paper plastic or cloth which could have a static charge If the PC board can...

Page 34: ...D2 D3 D4 and D5 Output Diodes D7 D8 D9 D10 and D11 Note On newer codes where Diode Modules are used in place of individual diodes both modules on a heat sink assembly should be replaced if one fails C...

Page 35: ...ponent D13 3 Check for broken leads to pri mary of Auxiliary Transformer T1 4 Possible open primary coil of Auxiliary Transformer T1 No output but fan operates and the meter display is on Output Termi...

Page 36: ...itches off and repeats cycle Check input voltages and recon nection procedures See Instal lation section Check output terminal switch S4 and or Remote Trigger Options i e wire feeders guns cables etc...

Page 37: ...while welding while connected to single phase supply Normal operation Nothing is wrong No test necessary The single phase operation is detected by the Protection Board and the output cur rent is limit...

Page 38: ...hine on local con trol Check input voltages and input volt age reconnect procedures See Installation section of this manual 1 Check Mode Switch S2 for dam age and continuity 2 Check for continuity bet...

Page 39: ...rect electrode for your application 1 Check for loose or burned con nections at choke shunt and output studs See wiring dia gram in Section G 2 Test and inspect D6 D12 L1 and L2 See Wiring Daigram in...

Page 40: ...V300 I NOTES F 10 F 10 Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC...

Page 41: ...ns detailed throughout this manual If for any reason you do not understand the test procedures or are unable to per form the test repairs safely contact the Lincoln Electric Service Department for ele...

Page 42: ...nnect resistor leads across the two capacitor terminals Hold resistor in place for 10 seconds DO NOT TOUCH CAPACITOR TERMINALS WITH YOUR BARE HANDS 7 Repeat discharge procedure for capacitor on other...

Page 43: ...er form the test repairs safely contact the Lincoln Electric Service Department for electrical troubleshooting assistance before you proceed Call 1 888 935 3877 V300 I F 13 F 13 Return to Section TOC...

Page 44: ...erform Input Capacitor Discharge test as described in the Maintenance Section 3 Remove the four screws that hold the Control Panel to the frame 4 Move the Control Panel forward and to the left so that...

Page 45: ...J4 Pin 11 a If voltage is 24v a c thermostats transfor mer T1 and switch S4 are OK Go on to Step 8 b If voltage is 0v a c test the following com ponents individually Auxiliary Transformer T1 Fan Therm...

Page 46: ...V300 I NOTES F 16 F 16 Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC...

Page 47: ...afety and to avoid electrical shock please observe all safety notes and pre cautions detailed throughout this manual If for any reason you do not understand the test procedures or are unable to per fo...

Page 48: ...lt also supports a resistor 5 Slide the through bolts toward the Control Panel until the brackets are disconnected and resistors are loose Be careful when loosening these through bolts as they secure...

Page 49: ...tection Board Make sure contact is made with conductor materi al NOTE Right angle thin gauge probes are best for this test With probes attached plug the J8 block into the PC board 9 Turn main power ON...

Page 50: ...CTION BOARD OUTPUT TEST cont TEST PROCEDURE 12 Open S4 and Turn Power OFF 13 Move probes to test between leads 306 and 275 See Figure F 6 14 Turn Power ON and close S4 If voltage is less than 1 VDC Pr...

Page 51: ...please observe all safety notes and pre cautions detailed throughout this manual If for any reason you do not understand the test procedures or are unable to per form the test repairs safely contact t...

Page 52: ...and R9 are OK Go to Dynamic Capacitor Balance Test b If more than 25 VDC difference is measured between the Switch Boards test each of the fol lowing components Capacitors C1 and C2 and Resistors R1 a...

Page 53: ...ction TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC FIGURE F 7 SWITCH BOARD TEST POINTS L8604 1 L8604 1 SWITCH SWI...

Page 54: ...V300 I NOTES F 24 F 24 Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC...

Page 55: ...oughout this manual If for any reason you do not understand the test procedures or are unable to per form the test repairs safely contact the Lincoln Electric Service Department for electrical trouble...

Page 56: ...ll wiring harness leads 401 403 1 8 9 12 4 5 402 404 from the Switch Boards 3 Fold the leads up so they do not interfere with the exposed PC board terminals See Figure F 8 4 Using an ohmmeter perform...

Page 57: ...than Shorted Replace both Snubber Test 100 ohms Switch Boards 4 5 9 Less than OK None Continue 100 ohms Greater than Open Replace both Snubber Test 1K ohm Switch Boards 1 8 9 Less than OK None Contin...

Page 58: ...on Repair Action Next Procedure Notes 12 401 403 Greater than OK None Continue 1K ohm Less than Shorted Replace both Snubber Test 100 ohms Switch Boards 401 403 12 Less than OK None Continue 100 ohms...

Page 59: ...and will invalidate your factory warranty For your safety and to avoid electrical shock please observe all safety notes and pre cautions detailed throughout this manual If for any reason you do not u...

Page 60: ...turn to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC SNUBBER RESISTOR TEST cont L8604 1 L8604 1 SWITCH SWITCH 9 R W 12 W R 401 403 1 8 4 5 402 404 FIGURE F 9 SNUBBER RESIS...

Page 61: ...rmed by only Lincoln Electric factory trained personnel Unauthorized repairs performed on this equipment may result in danger to the technician or machine operator and will invalidate your factory war...

Page 62: ...0 ohms one or more Output Diode is shorted Test all Output Diodes D 1 thru D 12 or diode modules individually NOTE On codes prior to 10200 the diodes should also be tested individually to check for Op...

Page 63: ...NING Service and repair should be performed by only Lincoln Electric factory trained personnel Unauthorized repairs performed on this equipment may result in danger to the technician or machine operat...

Page 64: ...faulty NOTE Faulty Capacitors could be the reason for a defective Input Rectifier Visually inspect Capacitors for leakage damage etc and use appropriate test equipment to determine com ponent integri...

Page 65: ...alidate your factory warranty For your safety and to avoid electrical shock please observe all safety notes and pre cautions detailed throughout this manual If for any reason you do not understand the...

Page 66: ...75D a If 15 VDC is present test is OK Go to step 6 b If 15 VDC is not present check Power Board and leads 302 and 275D for continuity and wire breakage F 36 F 36 Return to Section TOC Return to Sectio...

Page 67: ...dings Cleaning and sol dering the terminals to the leads may eliminate that problem If tests for steps 5 7 are OK and the machine contin ues to experience the problem the Control Board should be repla...

Page 68: ...tory warranty For your safety and to avoid electrical shock please observe all safety notes and pre cautions detailed throughout this manual If for any reason you do not understand the test procedures...

Page 69: ...disconnect any wires The machine must be functional to perform tests 4 Arrange the PC boards and wiring so you can easi ly perform the tests NOTE Do not allow live connections to touch each other 5 Tu...

Page 70: ...8 b If 15 VDC is present go to step 11 F 40 F 40 Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC...

Page 71: ...er circuit is oper ating properly b If 15 VDC is present go to step 10 10 Test for 0 1 VDC between leads 301 and 275D on Power Board a If 0 1 VDC is present AC trigger Control Board and Power Board ar...

Page 72: ...TOC Return to Master TOC Return to Master TOC Return to Master TOC FIG F 19 OVERVOLTAGE PROTECTION DC TRIGGER CIRCUIT OVERVOLTAGE PROTECTION DC TRIGGER CIRCUIT TEST cont THESE LEADS ARE USED FOR MONI...

Page 73: ...rator and will invalidate your factory warranty For your safety and to avoid electrical shock please observe all safety notes and pre cautions detailed throughout this manual If for any reason you do...

Page 74: ...perform the tests Do not disconnect from wiring harness Power Board Control Board NOTE Do not disconnect any wires The machine must be functional to perform test F 44 F 44 Return to Section TOC Retur...

Page 75: ...is in the ON position closed 8 Test for 24 VAC between leads 223A and 210 a If 24 VAC is present then AC Trigger Circuit is functioning normally b If 0 VAC is present check Choke Thermostat and Fan T...

Page 76: ...V300 I NOTES F 46 F 46 Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC...

Page 77: ...achine operator and will invalidate your factory warranty For your safety and to avoid electrical shock please observe all safety notes and pre cautions detailed throughout this manual If for any reas...

Page 78: ...ontrol relay contacts closing is not heard Power Board could be faulty Go to Test B NOTE If the relays energize but there is still a suspicion that the Power Board is faulty go on to Test B F 48 F 48...

Page 79: ...ctive See Fig F 24 9 Test for 24VDCfrom lead 309 to lead 313 J7pin 2 to J14 pin 2 If 24VDC is not present but 24VAC step 8 is cor rect the Power Board is defective 10 Test for 24VDC from lead 309 to l...

Page 80: ...BOARD TEST cont FIGURE F 24 SIMPLIFIED TRIGGER CICUIT FROM PROTECTION BOARD OVERVOLTAGE PWM OUTPUTS TO POWER BOARD 7J6 2J6 11J4 3J4 13J36 5J36 8J33 6J34 9J4 12J4 3J31 6J22 6J4 POWER BOARD CONTROL BOAR...

Page 81: ...e operator and will invalidate your factory warranty For your safety and to avoid electrical shock please observe all safety notes and pre cautions detailed throughout this manual If for any reason yo...

Page 82: ...cated on top of the fan shroud See Figure F 25 F 52 F 52 Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Mas...

Page 83: ...ring and remove the Capacitor from the clamp ring See Figure F 28 F 53 F 53 Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Mast...

Page 84: ...crements of 10 inch pounds alternating between the two See Figure F 27 7 Tighten the set screw of the clamping ring 8 Perform the Test After Repair of Switch Boards and or Capacitors F 54 F 54 Return...

Page 85: ...arranty For your safety and to avoid electrical shock please observe all safety notes and pre cautions detailed throughout this manual If for any reason you do not understand the test procedures or ar...

Page 86: ...e mounting sur faces of the new PC board and to the Capacitor terminals DO NOT allow the compound to enter the mounting screw holes because it can distort the torque values 8 Prepare to mount the new...

Page 87: ...fety and to avoid electrical shock please observe all safety notes and pre cautions detailed throughout this manual If for any reason you do not understand the test procedures or are unable to perform...

Page 88: ...supply fuse holders NOTE These fuses should be installed to protect against excessive current flow caused by a short circuit during the procedure 8 Turn on the machine 9 With the output free of a loa...

Page 89: ...l safety notes and pre cautions detailed throughout this manual If for any reason you do not understand the test procedures or are unable to per form the test repairs safely contact the Lincoln Electr...

Page 90: ...unting bracket 8 Mount the replacement diodes to the heat sink IMPORTANT The replacement diodes will come with an instruction sheet that addresses surface preparation and torque values Failure to foll...

Page 91: ...nk 7 Mount the new module and re connect the leads IMPORTANT The replacement module will come with an instruction sheet that addresses surface preparation torque values and hardware changes Failure to...

Page 92: ...450 440 50 or 60 1 38 425 460 60 1 50 450 380 50 or 60 1 67 425 575 60 OCV at rated INPUT V300 PRO V300 I 60 75V MAXIMUM ACCEPTABLE OUTPUT AMPS AT MINIMUM OUTPUT SETTINGS Output Min Max acceptable all...

Page 93: ...50 G 9 Entire Machine Schematic G 10 Driver PC Board Schematic S20216 G 11 Driver PC Board Assembly L8660 G 12 Driver PC Board Schematic S20799 G 13 Driver PC Board Assembly L9134 G 14 Switch Board Sc...

Page 94: ...4 11 10 275F 2 3 301 6 4 7 8 5 210 275A 1 3 4 2 1 2 502 215 306 5 9 223B 502 Y S5 METER FUNCTION SWITCH 301 D6 D4 D5 J5 J6 D11 D12 D10 D9 D8 D7 N E 224 210 2AMP 6AMP 110 115 VAC H2 H3 H4 A 12B 9B 9B...

Page 95: ...14 4 11 10 275F 2 3 301 6 4 7 8 5 210 275A 1 3 4 2 1 2 502 215 306 5 9 223B 502 Y S5 METER FUNCTION SWITCH 301 D6 D4 D5 J5 J6 D11 D12 D10 D9 D8 D7 N E 224 210 6AMP H2 H3 H4 A 12B 9B 9B R 9 12C 9A 53 1...

Page 96: ...2 5 0 2 5 W 6 H 5 1 1 0 1 2 5 3 4 1 1 2 9 6 8 8 1 3 1 2 7 6 1 4 4 1 1 1 0 2 7 5 F 2 3 3 0 1 6 4 7 8 5 2 1 0 2 7 5 A 1 3 4 2 1 2 5 0 2 2 1 5 3 0 6 5 9 2 2 3 B 5 0 2 Y 3 0 1 D 6 D 4 D 5 J 6 D 1 1 D 1 2...

Page 97: ...BOARD RIGHT 212D 503 501 504 0V 24V 42V 1 4 5 3 2 1 4 2 3 001 400 C8 R10 001 400 10 2W R13 C7 COLOR CODE R RED 250 25W 6 H5 1 10 12 5 3 4 11 2 9 6 8 8 13 12 7 6 14 4 11 10 275F 2 3 301 6 4 7 8 5 210...

Page 98: ...1 2 9 6 8 8 1 3 1 2 7 6 1 4 4 1 1 1 0 2 7 5 F 2 3 3 0 1 6 4 7 8 5 2 1 0 2 7 5 A 1 3 4 2 1 2 5 0 2 2 1 5 3 0 6 5 9 2 2 3 B 5 0 2 Y 3 0 1 D 6 D 4 D 5 J 6 D 1 1 D 1 2 D 1 0 D 9 D 8 D 7 N E 2 2 4 2 1 0 2...

Page 99: ...2 1 4 2 3 001 400 C8 R10 001 400 10 2W R13 C7 COLOR CODE R RED 250 25W 6 H5 1 10 12 5 3 4 11 2 9 6 8 8 13 12 7 6 14 4 11 10 275F 2 3 301 6 4 7 8 5 210 275A 1 3 4 2 1 2 502 215 306 5 9 223B 502 Y 301...

Page 100: ...C 12B 52 3 G 41 J5 J16 D 2 W ON 4 A 316 4 5 D 25W 12A RIGHT 9D 212D 5 4 6 3 2 4 PANEL 226 CV GMAW 2 3 TP6 5 25W 1 400A BOTTOM 401 403 TOP 450V 25W RIGHT 2200 F 25 BOARD H1 25W 1 200 5 H2 302 4 5 6 2 N...

Page 101: ...RED 250 25W 6 H5 1 10 12 5 3 4 11 2 9 6 8 8 13 12 7 6 14 4 11 10 275F 2 3 301 6 4 7 8 5 210 275A 1 3 4 2 1 2 502 215 306 5 9 223B 502 Y 301 D6 D4 D5 1 7 8 14 J6 D11 D12 D10 D9 D8 D7 N E 224 210 6AMP...

Page 102: ...R 8 229 286 TP6 250 25W ARC ARC 4 5 6 7 8 1 3 2 275F J1 1 3 4 2 1 2 B W TP4 C6 J2 J3 1 2 3 4 5 6 7 8 9 10 11 12 J4 1 2 3 4 5 6 7 8 9 10 11 12 13 14 J5 220 204A 76 203 206 227 213 214 225 226 229 228 2...

Page 103: ...reference only It may not be accurate for all machines covered by this manual Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Ma...

Page 104: ...0 I PC BOARD ASSEMBLY DRIVER L8660 G 12 Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to...

Page 105: ...TE This diagram is for reference only It may not be accurate for all machines covered by this manual Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to M...

Page 106: ...in danger to the Machine Operator or Technician Improper PC board repairs could result in damage to the machine ELECTRICAL DIAGRAMS G 14 V300 I PC BOARD ASSEMBLY DRIVER 9134 G 14 Return to Section TOC...

Page 107: ...1W 6 2V DZ9 47 5 R 3 6 BYT12P600 C1 A1 A1 39 2K R39 221 R 2 1 00K R 2 1 20 R 3 1 1 50K R 3 0 100 R 1 1N4936 D6 600mA 40V Q11 1W 3 3V DZ8 1N4936 D1 1 00K R 2 0 C A P A C I T O R S B G E N E R A L I N...

Page 108: ...B4 B5 B6 CONNECTOR tab QC edge offset B7 B8 B9 B10 B11 1 4 B12 C1 C5 C6 C7 CAPACITOR CEMO 022 50V 20 C2 C8 CAPACITOR CEMO 2700P 50V 5 C3 C4 CAPACITOR PPF 047 1200V 5 D1 D2 D3 D4 D5 D6 DIODE AXLDS 1A 4...

Page 109: ...TE This diagram is for reference only It may not be accurate for all machines covered by this manual Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to M...

Page 110: ...R5 R4 R32 R2 R24 R31 R30 R20 R23 R21 R18 R3 R1 R29 R17 R8 R6 R9 R33 R34 R27 R25 R26 R19 C8 C2 C5 C6 C1 C7 DZ8 DZ5 D6 D1 DZ9 D7 DZ12 DZ7 D8 DZ3 DZ4 DZ6 D2 D3 D4 D5 D10 D9 DZ1 DZ2 Q2 Q3 Q1 Q10 B8 B4 Q1...

Page 111: ...2 C3 X3 8 9 10 50V 022 C15 AMPS OCV C VOLTS D VI DPC A ACTUAL B AMPS ARC TIG VOLTS 50V 022 C54 50V 022 C35 J4 8 1W 5 1V DZ9 35V 4 7 C48 22 1K R 9 8 150K R 9 1 50V 022 C67 35V 4 7 C39 301 R 8 2 2 67K R...

Page 112: ...urages board level troubleshooting and repair since it may compromise the quality of the design and may result in danger to the Machine Operator or Technician Improper PC board repairs could result in...

Page 113: ...USING Molex 8 pin P2 plugs into J2 PLUG HOUSING Molex 4 pin P3 plugs into J3 PLUG HOUSING Molex 2 pin P4 plugs into J4 PLUG HOUSING Molex 12 pin P5 plugs into J5 PLUG HOUSING Molex 14 pin Q1 Q2 TRANSI...

Page 114: ...Master TOC ELECTRICAL DIAGRAMS G 22 V300 I SCHEMATIC PROTECTION PC BOARD M16097 G 22 NOTE This diagram is for reference only It may not be accurate for all machines covered by this manual Return to S...

Page 115: ...B52 B53 CONNECTOR tab 1 4 C1 C3 C4 C5 C6 CAPACITOR ceramic C2 CAPACITOR tantlm etc 27 f 35VDC D1 D3 D4 D5 D6 D7 DIODE 1A 400V D8 DIODE 1A 1000V DZ1 DIODE IN4740 Zener 10V 1W J8 RECEPTACLE Molex mini...

Page 116: ...E This diagram is for reference only It may not be accurate for all machines covered by this manual Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Ma...

Page 117: ...urn to Master TOC D C A B F E POWER BOARD L8033 4 Item Identification X1 REGULATOR ASBLY C2 C7 C11 022 50 J7 CONNECTOR X5 VOLT REG HEAT SINK ASBLY C3 150 50 D1 D2 D3 D4 D5 D8 D9 1N4004 D10 D11 D12 D13...

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