View Safety Info October, 2006 POWER MIG 255C For use with machines having Code Number : 11192, 11218 Return to Master TOC View Safety Info View Safety Info Safety Depends on You Return to Master TOC Return to Master TOC SVM170-A RETURN TO MAIN MENU Lincoln arc welding and cutting equipment is designed and built with safety in mind. However, your overall safety can be increased by proper installation . . . and thoughtful operation on your part.
Return to Master TOC i i SAFETY WARNING CALIFORNIA PROPOSITION 65 WARNINGS Diesel engine exhaust and some of its constituents are known to the State of California to cause cancer, birth defects, and other reproductive harm. The Above For Diesel Engines The engine exhaust from this product contains chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm. The Above For Gasoline Engines ARC WELDING CAN BE HAZARDOUS.
Return to Master TOC Return to Master TOC ii ELECTRIC SHOCK can kill. ARC RAYS can burn. 3.a. The electrode and work (or ground) circuits are electrically “hot” when the welder is on. Do not touch these “hot” parts with your bare skin or wet clothing. Wear dry, hole-free gloves to insulate hands. 4.a. Use a shield with the proper filter and cover plates to protect your eyes from sparks and the rays of the arc when welding or observing open arc welding.
Return to Master TOC iii WELDING SPARKS can cause fire or explosion. 6.a. Remove fire hazards from the welding area. 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 adjacent areas. Avoid welding near hydraulic lines. Have a fire extinguisher readily available. 6.b.
Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC iv iv SAFETY PRÉCAUTIONS DE SÛRETÉ Pour votre propre protection lire et observer toutes les instructions et les précautions de sûreté specifiques qui parraissent dans ce manuel aussi bien que les précautions de sûreté générales suivantes: Sûreté Pour Soudage A L’Arc 1. Protegez-vous contre la secousse électrique: a. Les circuits à l’électrode et à la piéce sont sous tension quand la machine à souder est en marche.
RETURN TO MAIN MENU v v MASTER TABLE OF CONTENTS FOR ALL SECTIONS Page Safety ..................................................... i-iv Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Section A Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Section B Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
INSTALLATION SECTION A TABLE OF CONTENTS -INSTALLATION SECTIONInstallation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Section A Technical Specifications — POWER MIG 255C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-2 Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Return to Master TOC Return to Section TOC A-2 A-2 INSTALLATION TECHNICAL SPECIFICATIONS – POWER MIG 255C INPUT – SINGLE PHASE ONLY Standard Voltage/Frequency Input Current @ 200 Amp Rated Output Input Current @ 250 Amp Rated Output 208/230/60 Hz *47/44 Amps 56/52 230/460/575/60 Hz 41/20/16 Amps 50/24/19 RATED OUTPUT Duty Cycle 40% 60% 100% Amps 250 Amps 200 Amps 145 Amps Volts at Rated Amperes 26 Volts 28 Volts 26 Volts Return to Master TOC Return to Section TOC OUTPUT Welding Current Range (Con
Return to Master TOC Return to Section TOC A-3 Read entire installation section before starting installation. INPUT POWER, GROUNDING AND CONNECTION DIAGRAMS SAFETY PRECAUTIONS WARNING WARNING ELECTRIC SHOCK can kill. • Do not touch electrically live parts such as output terminals or internal wiring. ELECTRIC SHOCK can kill. • Only qualified personnel should perform this installation.
Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC A-4 INSTALLATION A-4 FIGURE A.1 — DUAL VOLTAGE MACHINE INPUT CONNECTIONS. 3. The 208/230 volt 60 Hz model POWER MIG is shipped with a 10 ft. input cable and plug connected to the welder. A matching receptacle is supplied with the machine. Mount the receptacle in a suitable location using the screws provided.
Return to Section TOC Return to Master TOC Return to Section TOC Return to Master TOC A-5 INSTALLATION FIGURE A.2 — TRIPLE VOLTAGE MACHINE INPUT CONNECTIONS. Return to Section TOC Return to Master TOC Return to Master TOC FIGURE A.3 — RECEPTACLE DIAGRAM. Return to Section TOC A-5 CONNECT TO A SYSTEM GROUNDING WIRE. SEE THE UNITED STATES NATIONAL ELECTRICAL CODE AND/OR LOCAL CODES FOR OTHER DETAILS AND MEANS FOR PROPER GROUNDING.
Return to Master TOC Return to Section TOC A-6 GUN AND CABLE INSTALLATION Return to Master TOC Return to Section TOC 2. Unscrew knurled screw on the drive unit front end (inside wire feed compartment) until tip of screw no longer protrudes into gun opening as seen from front of machine. 3. Insert the male end of gun cable into the female casting through opening in front panel. Make sure connector is fully inserted and tighten knurled screw. Return to Master TOC 4.
OPERATION SECTION B TABLE OF CONTENTS -OPERATION SECTIONOperation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Section B Product Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-3 Recommended Processes and Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Return to Master TOC Return to Section TOC B-2 Read entire Operation section before operating the POWER MIG 255C. WARNING ELECTRIC SHOCK can kill. • Do not touch electrically live parts or electrode with skin or wet clothing. Insulate yourself from work and ground. Return to Master TOC • Always gloves. Return to Section TOC B-2 OPERATION wear dry insulating FUMES AND GASES can be dangerous. • Keep your head out of fumes. • Use ventilation or exhaust to remove fumes from breathing zone.
Return to Master TOC Return to Master TOC Return to Section TOC Return to Section TOC B-3 B-3 OPERATION PRODUCT DESCRIPTION The POWER MIG™ 255C is a complete semiautomatic constant voltage DC arc welding machine built to meet NEMA specifications. It combines a constant voltage power source and a constant speed wire feeder with a microcomputerbased controller to form a reliable high-performance welding system.
Return to Master TOC Return to Section TOC B-4 OPERATION mation also appears on the Procedure Decal on the door inside the wire compartment. DESCRIPTION OF CONTROLS Power ON/OFF Switch — Place the lever in the "ON" position to energize the POWER MIG 255C. When the power is on, the red LED display lights illuminate. Voltage Control — This is a continuous control that gives full range adjustment of power source output voltage. It can be adjusted while welding over its 10 to 28 volt range.
Return to Master TOC Return to Section TOC B-5 PROCEDURE FOR CHANGING DRIVE AND IDLE ROLL SETS 5. Rotate the spindle and adapter so the retaining spring is at the 12 o'clock position. 1. Turn off the power source. 6. Position the Readi-Reel so that it will rotate in a direction when feeding so as to be de- reeled from top of the coil. 2. Release the pressure on the idle roll by swinging the adjustable pressure arm down toward the back of the machine.
Return to Master TOC Return to Section TOC B-6 TO START THE WELDER Turn the Power Switch switch to ON. This lights the red LED display lights. With the desired voltage and wire speed selected, operate the gun trigger for welder output and to energize the wire feed motor. FEEDING WIRE ELECTRODE The pressure arm controls the amount of force the drive rolls exert on the wire. Proper adjustment of both pressure arm gives the best welding performance.
Return to Master TOC Return to Section TOC B-7 B-7 OPERATION 5. Loosen the socket head cap screw that holds the connector bar against the gun bushing. Important: Do not attempt to completely remove the socket head cap screw. 6. Remove the outer wire guide, and push the gun bushing out of the wire drive. Because of the precision fit, light tapping may be required to remove the gun bushing. 9. Rotate the gun bushing until the thumb screw hole aligns with the thumb screw hole in the feed plate.
Return to Master TOC Return to Section TOC B-8 SETTING RUN-IN SPEED ON STANDARD POWER MIG FEEDER FAST OR SLOW RUN-IN MODE SELECTION, MAKING A WELD The POWER MIG 255C is factory set for fast run-in mode where the wire feed will accelerate directly to the preset wire feed speed when the gun trigger is closed. 1. Check that the electrode polarity is correct for the process being used, then turn the power switch ON.
Return to Master TOC Return to Section TOC B-9 OPERATION WARNING When using an open arc process, it is necessary to use correct eye, head, and body protection. 8. Position electrode over joint. End of electrode may be lightly touching the work. 9. Lower welding helmet, close gun trigger, and begin welding. Hold the gun so the contact tip to work distance is about 3/8" (10 mm) [3/4" (20 mm) for Outershield]. Return to Master TOC Return to Section TOC 10.
Return to Master TOC Return to Section TOC B-10 B-10 OPERATION WELDING THERMAL OVERLOAD PROTECTION English Wire The POWER MIG 255C has built-in protective thermostats that respond to excessive temperature. They open the wire feed and welder output circuits if the machine exceeds the maximum safe operating temperature because of a frequent overload, or high ambient temperature plus overload.
ACCESSORIES SECTION C TABLE OF CONTENTS -ACCESSORIES SECTIONAccessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Section C Drive Roll Kits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-2 3/64 in. (1.2 mm) Aluminum Feeding Kit (K1703-1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Return to Master TOC Return to Section TOC C-2 DRIVE ROLL KITS Refer to Table C.1 for various drive roll kits that are available for the POWER MIG. All items in Bold are supplied standard with the POWER MIG. TABLE C.1 — AVAILABLE DRIVE ROLL KITS. Electrode Type Solid Steel (Includes Stainless Steel) Cored Return to Master TOC Aluminum Return to Section TOC C-2 ACCESSORIES Wire Size Drive Roll Kit .023”-.030” (0.6-0.8 mm) .035” (0.9 mm) .045” (1.2 mm) .035-.045 (0.9-1.2mm) .040 (1.01) .035” (0.
Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC C-3 C-3 ACCESSORIES OPERATING INSTRUCTIONS FOR TIMER KIT If the optional Timer Kit (K1701-1) is installed, select the desired mode with the selector switch: A. Normal Welding mode provides weld power only while the trigger switch is depressed. This is the same operation as when the Timer Kit is not installed. B.
FIGURE C.1 7-PIN SPOOL GUN RECEPTACLE Return to Master TOC Return to Section TOC + MAKING A WELD WITH PRINCE XL SPOOL GUN THE Return to Master TOC K2445-1 CABLE ADAPTER (7-pin to 6-pin) Note: This adapter is only for The Magnum SG Spool Gun. + POSITIVE CABLE AND STUD GAS LINE AND 5/8 FITTING The POWER MIG control circuitry is designed to sense either the spool gun or (built in) wire feeder trigger circuitry. The spool gun can easily be plugged in and will be ready to use.
Return to Master TOC Return to Section TOC C-5 ACCESSORIES CAUTION Closing either gun trigger will cause the electrode of both guns to be electrically "HOT". Be sure unused gun is positioned so electrode or tip will not contact metal case or other metal common to work. ----------------------------------------------------------------------------1. Pulling the trigger for the built-in feeder gun: a. Disables spool gun operation. b.
Return to Section TOC Return to Master TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Section TOC Return to Master TOC Return to Section TOC C-6 NOTES POWER MIG 255 C-6
MAINTENANCE SECTION D TABLE OF CONTENTS -MAINTENANCE SECTIONMaintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Section D Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-2 General Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Return to Master TOC Return to Section TOC D-2 1. Be sure the nozzle insulator is fully screwed onto the gun tube and does not block the gas holes in the diffuser. SAFETY PRECAUTIONS WARNING • Have a qualified electrician do the maintenance and troubleshooting work. • Disconnect the input power off using the disconnect switch at the main input supply before working inside machine. Return to Master TOC Return to Section TOC • Unplug the power cable if it is connected to a receptacle.
Return to Master TOC Return to Section TOC D-3 D-3 MAINTENANCE 6. TABLE D.1 Diámetro de Diameter of Electrodos Utilizados Electrode Used .025-.030" Steel Replace Size mentde Tamaño Stencilled on Número Grabado Line End of liner Parte de la en el extremo del Part Bushing Guía Cilindro de la Guía Number No. de Parte Adjustable nozzle Gas No. de Parte del del Difusor de Fixed Nozzle Diffuser Gas Diffuser Difusor de Gas Gas de la Part No. Part No.
Return to Master TOC Return to Section TOC D-4 TABLE D.2 ACCESSORIES AND EXPENDABLE REPLACEMENT PARTS FOR MAGNUM 250L GUN AND CABLE ASSEMBLIES Description Return to Master TOC Return to Section TOC CONTACTS TIPS Standard Duty Heavy Duty Tapered Notched (For Alum.) GAS NOZZLES Fixed (Flush) Fixed (Recessed) Requires: Gas Diffuser as’bly Return to Master TOC Return to Section TOC Adjustable Slip On English Size Metric Size KP1934-2 KP1934-1 KP1955-1 .025 – .030" .035 – .045" 3/64" (Alum.
SECTION E THEORY OF OPERATION TABLE OF CONTENTS -THEORY OF OPERATION SECTION- Theory of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Section E Input Line Voltage and Main Transformer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-2 Output Rectification and Feedback Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
FIGURE E.2 — INPUT LINE VOLTAGE AND MAIN TRANSFORMER.
FIGURE E.3 — OUTPUT RECTIFICATION AND FEEDBACK.
FIGURE E.4 — CONSTANT VOLTAGE OUTPUT.
FIGURE E.5 — WIRE DRIVE MOTOR AND FEEDBACK.
Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC E-6 THEORY OF OPERATION E-6 OVERCURRENT PROTECTION THERMAL AND OVERLOAD PROTECTION The POWER MIG 255C has built-in protective thermostats that respond to excessive temperatures. One is located on the output choke. The other thermostat is located on the SCR heat sink assembly.
THEORY OF OPERATION E-7 FIGURE E.6 — SCR OPERATION. Return to Master TOC Return to Section TOC E-7 INPUT CATHODE OUTPUT NOTE: AS THE GATE PULSE IS APPLIED LATER IN THE CYCLE THE SCR OUTPUT IS DECREASED. ANODE Return to Section TOC Return to Master TOC Return to Section TOC Return to Master TOC Return to Section TOC Return to Master TOC GATE SCR OPERATION A silicon controlled rectifier (SCR) is a three terminal device used to control rather large currents to a load.
Return to Section TOC Return to Master TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Section TOC Return to Master TOC Return to Section TOC E-8 NOTES POWER MIG 255C E-8
TROUBLESHOOTING AND REPAIR F-1 TABLE OF CONTENTS -TROUBLESHOOTING AND REPAIR SECTIONTroubleshooting and Repair . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Section F How to Use Troubleshooting Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F-2 PC Board Troubleshooting Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Return to Master TOC Return to Section TOC F-2 TROUBLESHOOTING AND REPAIR HOW TO USE TROUBLESHOOTING GUIDE WARNING Service and Repair should only be performed by Lincoln Electric Factory Trained Personnel. Unauthorized repairs performed on this equipment may result in danger to the technician and machine operator and will invalidate your factory warranty. For your safety and to avoid Electrical Shock, please observe all safety notes and precautions detailed throughout this manual.
TROUBLESHOOTING & REPAIR WARNING ELECTRIC SHOCK can kill. • Have an electrician install and service this equipment. Turn the input power OFF at the fuse box before working on equipment. Do not touch electrically hot parts. Return to Master TOC Return to Section TOC CAUTION Sometimes machine failures appear to be due to PC board failures. These problems can sometimes be traced to poor electrical connections.
Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC F-4 TROUBLESHOOTING AND REPAIR F-4 TROUBLESHOOTING GUIDE Observe all Safety Guidelines detailed throughout this manual. PROBLEMS (SYMPTOMS) POSSIBLE AREAS OF MISADJUSTMENT(S) RECOMMENDED COURSE OF ACTION OUTPUT PROBLEMS Major Physical or Electrical Damage 1. Contact your local Lincoln 1.
Return to Master TOC Return to Master TOC Return to Master TOC Return to Section TOC Return to Section TOC Return to Section TOC F-5 F-5 TROUBLESHOOTING AND REPAIR Observe all Safety Guidelines detailed throughout this manual. PROBLEMS (SYMPTOMS) POSSIBLE AREAS OF MISADJUSTMENT(S) RECOMMENDED COURSE OF ACTION OUTPUT PROBLEMS (Continued) No open circuit voltage output but 1. Check the input voltage at the 1. Check for loose or broken conwire feeds normally when gun trigmachine.
Return to Master TOC Return to Section TOC F-6 TROUBLESHOOTING AND REPAIR F-6 Observe all Safety Guidelines detailed throughout this manual. PROBLEMS (SYMPTOMS) POSSIBLE AREAS OF MISADJUSTMENT(S) RECOMMENDED COURSE OF ACTION OUTPUT PROBLEMS (Continued) The output voltage and wire feed is 1. Remove the gun. If the problem 1. Check the machine's internal present continuously or pulsing is resolved the gun trigger circuit trigger leads for grounds or when gun trigger is NOT activated. is faulty.
Return to Master TOC Return to Section TOC F-7 TROUBLESHOOTING AND REPAIR F-7 Observe all Safety Guidelines detailed throughout this manual. PROBLEMS (SYMPTOMS) POSSIBLE AREAS OF MISADJUSTMENT(S) RECOMMENDED COURSE OF ACTION FUNCTION PROBLEMS No control of arc voltage. Wire feed- 1. The arc voltage control poten- 1. The arc voltage control potening is normal. tiometer may be dirty. Rotate tiometer may be faulty. Check or several times and check if probreplace. See Wiring Diagram. lem is resolved.
Return to Master TOC Return to Section TOC F-8 TROUBLESHOOTING AND REPAIR F-8 Observe all Safety Guidelines detailed throughout this manual. PROBLEMS (SYMPTOMS) POSSIBLE AREAS OF MISADJUSTMENT(S) RECOMMENDED COURSE OF ACTION WIRE FEEDING PROBLEMS No control of wire feed speed. Other 1. The wire feed speed control 1. The Wire Speed Control potenmachine functions are normal may be dirty. Rotate several tiometer may be faulty. Check or times and check if problem is replace. See Wiring Diagram.
Return to Section TOC Return to Master TOC Return to Section TOC Return to Master TOC F-9 TROUBLESHOOTING AND REPAIR F-9 Observe all Safety Guidelines detailed throughout this manual. PROBLEMS (SYMPTOMS) POSSIBLE AREAS OF MISADJUSTMENT(S) RECOMMENDED COURSE OF ACTION WELDING PROBLEMS The arc is unstable and or “hunting”. 1. Check for worn or melted con- 1. Check for loose connections at tact tip. the output terminals, the chokes, the capacitor bank and 2.
Return to Master TOC Return to Section TOC F-10 TROUBLESHOOTING AND REPAIR F-10 Observe all Safety Guidelines detailed throughout this manual. PROBLEMS (SYMPTOMS) POSSIBLE AREAS OF MISADJUSTMENT(S) RECOMMENDED COURSE OF ACTION WELDING PROBLEMS (Continued) The contact tip seizes in the gas diffuser. 1. The tip being over heated due to 1. Make sure tip is tight in diffuser. excessive current and/or high duty cycle welding.
Return to Master TOC Return to Section TOC F-11 TROUBLESHOOTING AND REPAIR TEST PROCEDURES MAIN TRANSFORMER TEST WARNING Service and repair should only be performed by 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 warranty. For your safety and to avoid electrical shock, please observe all safety notes and precautions detailed throughout this manual.
Return to Master TOC Return to Section TOC F-12 F-12 TROUBLESHOOTING AND REPAIR MAIN TRANSFORMER TEST (continued) FIGURE F.1 — G3521 CONTROL PC BOARD AND M19248 SNUBBER PC BOARD MAIN TRANSFORMER TEST POINTS. X5 (6J6) J5 #208 (2J5) X6 (5J6) X7 (4J6) X9 (8J5) Return to Master TOC Return to Section TOC J6 #206 (3J5) X8 (16J5) #209 (1J5) J3 J8 J1 Return to Master TOC Return to Section TOC J4 J2 4. Locate plug J6 on the control PC board. See Figure F.1.
Return to Master TOC Return to Section TOC F-13 MAIN TRANSFORMER TEST (continued) 6. Connect main input power to the machine. 7. Turn the POWER MIG 255C ON/OFF POWER SWITCH to ON. 8. Carefully make the following voltage tests at plug J6. Return to Master TOC Return to Section TOC a. Turn the machine OFF between each test. b. Carefully insert the meter probes into the back of each Molex plug pin cavity to perform the test.
Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING AND REPAIR F-14 MAIN TRANSFORMER TEST (continued) 14. Locate the following leads on plug J5 on the Control PC board. See Figure F.1. LEAD PLUG LOCATION 206 3J5 LEAD PLUG LOCATION 208 209 2J5 1J5 d. If ALL the voltages tested are incorrect or missing, go to step 16. 17.
Return to Master TOC Return to Section TOC F-15 TROUBLESHOOTING AND REPAIR RECTIFIER DIODE BRIDGE TEST WARNING Service and repair should only be performed by 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 warranty. For your safety and to avoid electrical shock, please observe all safety notes and precautions detailed throughout this manual.
Return to Section TOC Return to Master TOC Return to Section TOC Return to Master TOC Return to Section TOC Return to Master TOC F-16 RECTIFIER DIODE BRIDGE TESTING (continued) FIGURE F.2 — G3521 RECTIFIER DIODE BRIDGE LOCATION. RECTIFIER DIODE BRIDGE (D2) TEST PROCEDURE LEAD 1. Disconnect the main AC input power to the machine. Return to Master TOC 2. Remove the case top and side panels with a 3/8 in. nutdriver. Return to Section TOC F-16 TROUBLESHOOTING AND REPAIR 3.
Return to Master TOC Return to Section TOC F-17 RECTIFIER DIODE BRIDGE TESTING (continued) 6. Turn the POWER MIG 255C ON/OFF POWER SWITCH to ON. 7. Carefully make the following voltage tests: a. Turn the machine OFF between each test. Return to Master TOC Return to Section TOC b. Carefully connect the meter plugs to the exposed lead connections. c.
Return to Section TOC Return to Master TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Section TOC Return to Master TOC Return to Section TOC F-18 NOTES POWER MIG 255C F-18
Return to Master TOC Return to Section TOC F-19 TROUBLESHOOTING AND REPAIR STATIC SCR RECTIFIER ASSEMBLY TEST WARNING Service and repair should only be performed by 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 warranty. For your safety and to avoid electrical shock, please observe all safety notes and precautions detailed throughout this manual.
Return to Master TOC Return to Section TOC F-20 TROUBLESHOOTING AND REPAIR F-20 STATIC SCR RECTIFIER ASSEMBLY TEST (continued) FIGURE F.3 — REMOVE PLUGS J6 AND J5 TO PERFORM STATIC RECTIFIER ASSEMBLY TEST. J6 Return to Master TOC Return to Section TOC J5 J3 J8 J1 J4 Return to Master TOC Return to Section TOC J2 TEST PROCEDURE 1. Disconnect main AC input power to the machine. 2. Remove the case top and side panels with a 3/8 in. nutdriver. Return to Master TOC Return to Section TOC 3.
Return to Section TOC Return to Master TOC Return to Section TOC Return to Master TOC F-21 TROUBLESHOOTING AND REPAIR STATIC SCR RECTIFIER ASSEMBLY TEST (continued) FIGURE F.4 — LOCATION OF LEADS X2 AND X3. Return to Section TOC Return to Master TOC Return to Master TOC FIGURE F.5 — SCR 1 TEST POINTS. NEGATIVE CAPACITOR BANK BUSS BAR LEADS X2 AND X3 CONNECTION 9. Test for high or infinite resistance from the cathode to the anode of SCR 1 by reversing the meter leads. See Figure F.5. 6.
Return to Section TOC Return to Master TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Section TOC Return to Master TOC Return to Section TOC F-22 NOTES POWER MIG 255C F-22
Return to Master TOC Return to Section TOC F-23 TROUBLESHOOTING AND REPAIR ACTIVE SCR RECTIFIER ASSEMBLY TEST WARNING Service and repair should only be performed by 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 warranty. For your safety and to avoid electrical shock, please observe all safety notes and precautions detailed throughout this manual.
Return to Master TOC Return to Section TOC F-24 TROUBLESHOOTING AND REPAIR F-24 ACTIVE SCR RECTIFIER ASSEMBLY TEST (continued) FIGURE F.6 — CONTROL BOARD MOLEX PLUG LOCATIONS FOR G3521 PC CONTROL BOARD. J6 Return to Master TOC Return to Section TOC J5 J3 J8 J1 J4 Return to Master TOC Return to Section TOC J2 TEST PROCEDURE 1. Disconnect main AC input power to the machine. 2. Remove the case top and side panels with a 3/8 in. nutdriver. Return to Master TOC Return to Section TOC 3.
Return to Master TOC Return to Section TOC F-25 TROUBLESHOOTING AND REPAIR ACTIVE SCR RECTIFIER ASSEMBLY TEST (continued) 6. Disconnect leads X2 and X3 (braided copper strap) from the negative capacitor bank buss bar using a 1/2 in. open end wrench. See Figure F.7. FIGURE F.7 — LOCATION OF LEADS X2 AND X3. Return to Master TOC Return to Master TOC Return to Master TOC Return to Section TOC Return to Section TOC 8. Use a commercial SCR tester or construct the tester circuit shown in Figure F.8.
Return to Master TOC Return to Section TOC F-26 ACTIVE SCR RECTIFIER ASSEMBLY TEST (continued) 9. Connect the tester to the SCR 1 as shown in Figure F.8. 15. Reconnect the tester leads. Figure F.8. a. Connect tester lead (A) to the cathode. b. Connect tester lead (C) to the cathode. b. Connect tester lead (C) to the anode. c. Connect tester lead (G) to the gate. c. Disconnect test lead (G) from the gate. 16. Close switch SW-1. Return to Master TOC NOTE: Switch SW-2 should be open.
Return to Master TOC Return to Section TOC F-27 TROUBLESHOOTING AND REPAIR WIRE DRIVE MOTOR AND TACHOMETER FEEDBACK TEST WARNING Service and repair should only be performed by 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 warranty. For your safety and to avoid electrical shock, please observe all safety notes and precautions detailed throughout this manual.
Return to Master TOC Return to Section TOC F-28 F-28 TROUBLESHOOTING AND REPAIR WIRE DRIVE MOTOR AND TACHOMETER FEEDBACK TEST (continued) FIGURE F.9 — PLUG J1 LOCATION ON CONTROL PC BOARD. J6 J6 J3J3 Return to Master TOC Return to Section TOC J5 J5 B B J8J8 (4J1) (4J1) J1 W W J1 (2J1) (2J1) #206B #206B (1J1) (1J1) #555 #555 (6J1) (6J1) #515B #515B (5J1) (5J1) J4J4 Return to Master TOC Return to Section TOC J2J2 3. Locate plug J1 on the control PC board. See Figure F.9.
Return to Master TOC Return to Section TOC F-29 WIRE DRIVE MOTOR AND TACHOMETER FEEDBACK TEST (continued) 6. Make the following voltage tests: a. Turn the machine OFF between each test. Return to Master TOC Return to Master TOC Return to Section TOC Return to Section TOC 2. Locate plug J1 on the control PC board. See Figure F.9. 3. Locate the following leads on Plug J1: b. Carefully insert the meter probes into the back of each Molex plug pin cavity to perform the test. c.
Return to Master TOC Return to Section TOC F-30 WIRE DRIVE MOTOR AND TACHOMETER FEEDBACK TEST (continued) TEST FOR FEEDBACK VOLTAGE TO CONTROL BOARD FROM LEAD TO LEAD EXPECTED VOLTAGE 2. Locate plug J1 on the control PC board. 555 (6J1) 206B (1J1) 1.5 to 3.5 VDC Return to Master TOC Return to Section TOC LEAD PLUG LOCATION 555 206B 6J1 1J1 4. Connect main input power to the machine. 5. Make the following voltage tests: Return to Master TOC Return to Master TOC 6. If the 1.5 to 3.
Return to Master TOC NORMAL OPEN CIRCUIT VOLTAGE WAVEFORM 0 VOLTS Return to Section TOC Return to Master TOC Return to Master TOC 20.0 V Return to Section TOC F-31 TROUBLESHOOTING AND REPAIR Return to Master TOC Return to Section TOC Return to Section TOC F-31 2.5 ms SCOPE SETTINGS This is a typical DC output voltage waveform generated from a properly operating Volts/Div . . . . . . . . . . . . . . . . . . 20 V/Div machine.
Return to Master TOC F-32 TROUBLESHOOTING AND REPAIR TYPICAL OUTPUT VOLTAGE WAVEFORM - MACHINE LOADED 0 VOLTS Return to Master TOC Return to Section TOC Return to Section TOC F-32 20.0 V 5 ms Return to Section TOC Return to Master TOC Return to Section TOC Return to Master TOC MACHINE LOADED TO 250 AMPS AT 26 VDC SCOPE SETTINGS This is a typical DC output voltage waveform generated from a properly operating Volts/Div . . . . . . . . . . . . . . . . . . 20 V/Div machine.
Return to Section TOC Return to Master TOC Return to Section TOC Return to Master TOC F-33 F-33 TROUBLESHOOTING AND REPAIR ABNORMAL OUTPUT VOLTAGE WAVEFORM - MACHINE LOADED ONE OUTPUT SCR NOT FUNCTIONING 0 VOLTS 20.0 V 5 ms Return to Master TOC Return to Section TOC MACHINE LOADED TO 220 AMPS AT 22 VDC SCOPE SETTINGS This is NOT a typical DC output voltage waveform. One output SCR is not functioning. Note the increased ripple content.
Return to Master TOC ABNORMAL OPEN CIRCUIT VOLTAGE OUTPUT CAPACITOR BANK NOT FUNCTIONING 0 VOLTS Return to Section TOC Return to Master TOC Return to Master TOC 20.0 V Return to Section TOC F-34 TROUBLESHOOTING AND REPAIR Return to Master TOC Return to Section TOC Return to Section TOC F-34 5 ms SCOPE SETTINGS This is NOT the typical DC output voltage waveform. The output capacitors are not Volts/Div . . . . . . . . . . . . . . . . . . 20 V/Div functioning.
Return to Master TOC TYPICAL SCR GATE VOLTAGE WAVEFORM 0 VOLTS Return to Master TOC 2.00 V Return to Section TOC F-35 TROUBLESHOOTING AND REPAIR Return to Master TOC Return to Section TOC Return to Section TOC F-35 5 ms SCOPE SETTINGS This is a typical SCR gate pulse voltage waveform. The machine was in an open Volts/Div . . . . . . . . . . . . . . . . . . 2.0 V/Div circuit condition (no load) and operating properly. Note that each vertical division Horizontal Sweep . . . . . . . . . .
Return to Section TOC Return to Master TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Section TOC Return to Master TOC Return to Section TOC F-36 NOTES POWER MIG 255C F-36
Return to Master TOC Return to Section TOC F-37 TROUBLESHOOTING AND REPAIR COMPONENT REPLACEMENT PROCEDURES CONTROL PC BOARD REMOVAL AND REPLACEMENT WARNING Service and repair should only be performed by 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 warranty.
Return to Master TOC Return to Section TOC F-38 TROUBLESHOOTING AND REPAIR F-38 CONTROL PC BOARD REMOVAL AND REPLACEMENT (continued) FIGURE F.10 — WIRING HARNESS AND MOLEX PLUG LOCATIONS. J6 REMOVAL AND REPLACEMENT PROCEDURE 1. Disconnect main input power the machine. J5 2. Open the side panels and remove the tool tray using a 5/16 in. nutdriver.
Return to Master TOC Return to Section TOC F-39 TROUBLESHOOTING AND REPAIR CONTROL PC BOARD REMOVAL AND REPLACEMENT (continued) FIGURE F.11 — CONTROL BOARD MOUNTING. TOOL TRAY PC CONTROL BOARD Return to Master TOC MOUNTING STANDOFF Return to Section TOC F-39 Return to Section TOC Return to Master TOC Return to Section TOC Return to Master TOC NOTE: TOP COVER SHOWN REMOVED FOR CLARITY. 4. Ensure a static electricity grounding strap is used before handling the control PC boards. 7.
Return to Section TOC Return to Master TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Section TOC Return to Master TOC Return to Section TOC F-40 NOTES POWER MIG 255C F-40
Return to Master TOC Return to Section TOC F-41 TROUBLESHOOTING AND REPAIR WIRE DRIVE ASSEMBLY REMOVAL AND REPLACEMENT WARNING Service and repair should only be performed by 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 warranty. For your safety and to avoid electrical shock, please observe all safety notes and precautions detailed throughout this manual.
Return to Master TOC Return to Section TOC F-42 WIRE DRIVE ASSEMBLY REMOVAL AND REPLACEMENT (continued) FIGURE F.
Return to Master TOC Return to Section TOC F-43 TROUBLESHOOTING AND REPAIR WIRE DRIVE ASSEMBLY REMOVAL AND REPLACEMENT (continued) 11. Swing the idle arm up and away from the wire drive assembly. PROCEDURE 1. Disconnect main input power to the machine. 2. Remove the wire gun and wire. 3. Lift the wire drive door to gain access to the wire drive assembly. Return to Master TOC Return to Section TOC 4. Lift the tool tray door to allow access to the tool tray. 5. Use a 5/16 in.
Return to Section TOC Return to Master TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Section TOC Return to Master TOC Return to Section TOC F-44 NOTES POWER MIG 255C F-44
TROUBLESHOOTING AND REPAIR Return to Master TOC Return to Section TOC F-45 SCR OUTPUT RECTIFIER REMOVAL AND REPLACEMENT WARNING Service and repair should only be performed by 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 warranty. For your safety and to avoid electrical shock, please observe all safety notes and precautions detailed throughout this manual.
Return to Master TOC Return to Section TOC F-46 SCR OUTPUT RECTIFIER REMOVAL AND REPLACEMENT (continued) PROCEDURE 1. Remove the case side panels using a 3/8 in. nutdriver. 2. Disconnect lead #208S and transformer lead X1 from the heat sink on the left side of the machine using a 1/2 in. socket wrench. See Figure F.13. Return to Master TOC Return to Master TOC Return to Master TOC Return to Section TOC Return to Section TOC a. Thin lead is always on the outboard side of the connection.
Return to Master TOC Return to Section TOC F-47 TROUBLESHOOTING AND REPAIR F-47 SCR OUTPUT RECTIFIER REMOVAL AND REPLACEMENT (continued) FIGURE F.15 — RIGHT HEAT SINK LEAD DISCONNECTION. SCR ASSEMBLY SCR DIODE LEAD LEAD #320B Return to Master TOC Return to Master TOC Return to Section TOC Return to Section TOC LEAD #320 LEAD #209S LEAD X4 5. Remove lead #209S and transformer lead X4 from the right side heat sink using a 1/2 in. socket wrench and 1/2 in. open end wrench. See Figure F.15. 6.
Return to Section TOC Return to Master TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Section TOC Return to Master TOC Return to Section TOC F-48 NOTES POWER MIG 255C F-48
Return to Master TOC Return to Section TOC F-49 TROUBLESHOOTING AND REPAIR CAPACITOR BANK REMOVAL AND REPLACEMENT WARNING Service and repair should only be performed by 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 warranty. For your safety and to avoid electrical shock, please observe all safety notes and precautions detailed throughout this manual.
Return to Master TOC Return to Section TOC F-50 TROUBLESHOOTING AND REPAIR F-50 CAPACITOR BANK REMOVAL AND REPLACEMENT (continued) FIGURE F.16 — LOCATION OF CAPACITOR BANK REMOVAL AND REPLACEMENT COMPONENTS. LEAD #206 SCR DIODE LEAD CAPACITOR BANK LEAD #206B Return to Master TOC Return to Section TOC SHUNT LEADS X1 AND X2 POWER ENHANCEMENT CHOKE LEAD Return to Master TOC Return to Section TOC OUTPUT CHOKE LEAD tive capacitor bank buss bar using a 1/2 in. open end wrench.
Return to Master TOC Return to Section TOC F-51 TROUBLESHOOTING AND REPAIR MAIN TRANSFORMER AND OUTPUT CHOKE REMOVAL AND REPLACEMENT WARNING Service and repair should only be performed by 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 warranty.
Return to Master TOC Return to Section TOC F-52 TROUBLESHOOTING AND REPAIR MAIN TRANSFORMER AND OUTPUT CHOKE REMOVAL AND REPLACEMENT (continued) FIGURE F.17 — MAIN TRANSFORMER REMOVAL. LEAD X1 OUTPUT CHOKE LEAD Return to Master TOC Return to Master TOC Return to Section TOC Return to Section TOC OUTPUT CHOKE POSITIVE LEAD NOTE: PLUG-IN LEADS ARE NOT SHOWN FOR CLARITY. LEAD X4 LEADS X2 AND X3 MAIN TRANSFORMER POWER ENHANCEMENT CHOKE PROCEDURE 1. Disconnect main input power to the machine. 2.
Return to Master TOC Return to Section TOC F-53 TROUBLESHOOTING AND REPAIR MAIN TRANSFORMER AND OUTPUT CHOKE REMOVAL AND REPLACEMENT (continued) 11. Unplug and label leads X5, X6, X7, X8, and X9. These leads have connectors near the transformer which can be disconnected. 14. Remove the four nuts and washers mounting the transformer to the floor of the machine using a 1/2 in. wrench. 12. Disconnect the output choke lead from the positive capacitor bank buss using two 1/2 in. open end wrenches. 15.
Return to Section TOC Return to Master TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Section TOC Return to Master TOC Return to Section TOC F-54 NOTES POWER MIG 255C F-54
Return to Master TOC Return to Section TOC F-55 TROUBLESHOOTING AND REPAIR FAN MOTOR ASSEMBLY REMOVAL AND REPLACEMENT WARNING Service and repair should only be performed by 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 warranty. For your safety and to avoid electrical shock, please observe all safety notes and precautions detailed throughout this manual.
Return to Section TOC Return to Master TOC Return to Section TOC Return to Master TOC F-56 FAN MOTOR ASSEMBLY REMOVAL AND REPLACEMENT (continued) FIGURE F.18 — FAN MOTOR ASSEMBLY REMOVAL. Return to Master TOC Return to Section TOC FAN BLADE LEAD #353 LEAD #352 FAN MOTOR PROCEDURE 1. Disconnect main input power to the machine. 1. Remove the case side panels using a 3/8 in. nutdriver. 2. Disconnect the fan motor leads #352 and #352. See Figure F.18. Return to Master TOC 3. Remove the fan blade.
Return to Master TOC Return to Section TOC F-57 RETEST AFTER REPAIR INPUT IDLE AMPS AND WATTS Input Volts/Hertz Maximum Idle Amps Maximum Idle Watts 230/60 7.0 400 OPEN CIRCUIT VOLTAGE Return to Master TOC Return to Master TOC Return to Master TOC Return to Section TOC Return to Section TOC 35-40 VDC Return to Section TOC F-57 TROUBLESHOOTING AND REPAIR WIRE SPEED RANGE 50 - 700 IPM (1.27 - 17.
Return to Section TOC Return to Master TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Section TOC Return to Master TOC Return to Section TOC NOTES POWER MIG 255C
Return to Master TOC Section G-1 TABLE OF CONTENTS - ELECTRICAL DIAGRAMS SECTION - Section G-1 Electrical Diagrams ...............................................................................................Section G Wiring Diagram - Entire Machine - Code 11192 - (L12464) . . . . . . . . . . . . . . . . . . . .G-2 Wiring Diagram - Entire Machine - Code 11218 - (L12506) . . . . . . . . . . . . . . . . . . . .G-3 Schematic - Entire Machine - (G4752) . . . . . . . . . . . . . . . . . . . . . . . . . .
Return to Master TOC ELECTRICAL DIAGRAMS G-2 WIRING DIAGRAM - ENTIRE MACHINE - CODE 11192 (L12464) Return to Master TOC Return to Master TOC Return to Master TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC G-2 NOTE: This diagram is for reference only. It may not be accurate for all machines covered by this manual. The wiring diagram specific to your code is pasted inside one of the enclosure panels of your machine.
Return to Master TOC ELECTRICAL DIAGRAMS G-3 WIRING DIAGRAM - ENTIRE MACHINE CODE 11218 (L12506) Return to Master TOC Return to Master TOC Return to Master TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC G-3 NOTE: This diagram is for reference only. It may not be accurate for all machines covered by this manual. The wiring diagram specific to your code is pasted inside one of the enclosure panels of your machine.
Return to Master TOC ELECTRICAL DIAGRAMS G-4 SCHEMATIC - ENTIRE MACHINE - (G4752) Return to Master TOC Return to Master TOC Return to Master TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC G-4 NOTE: This diagram is for reference only. It may not be accurate for all machines covered by this manual.
Return to Master TOC ELECTRICAL DIAGRAMS G-5 SCHEMATIC - CONTROL PC BOARD - (G4823-2D1 SHEET 1) Return to Master TOC Return to Master TOC Return to Master TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC G-5 NOTE: This diagram is for reference only. It may not be accurate for all machines covered by this manual.
Return to Master TOC ELECTRICAL DIAGRAMS G-6 SCHEMATIC - CONTROL PC BOARD - (G4823-2D1 SHEET 2) Return to Master TOC Return to Master TOC Return to Master TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC G-6 NOTE: This diagram is for reference only. It may not be accurate for all machines covered by this manual.
Return to Master TOC ELECTRICAL DIAGRAMS G-7 SCHEMATIC - CONTROL PC BOARD - (G4823-2D1 SHEET 3) Return to Master TOC Return to Master TOC Return to Master TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC G-7 NOTE: This diagram is for reference only. It may not be accurate for all machines covered by this manual.
Return to Master TOC Return to Section TOC G-8 G-8 ELECTRICAL DIAGRAMS PC BOARD ASSEMBLY - CONTROL - (G4824-2D1) ITEM (USED WITH)* 1 2 (Q4)* 3 (Q4)* 4 (Q4)* 5 (X1)* 6 (Q4)* 7 (X1)* 8 (Q4)* QTY 1 1 1 AS REQ AS REQ 1 1 1 PART NUMBER G4824-D CF000003 E106A-13 E1868 E2861 S18104-1 S20209-52 T13746 DESCRIPTION PC BOARD BLANK 6-32 X .
L 10951 Return to Master TOC Return to Section TOC 515 500 R12 J10 7 J10 SCK MOSI X5 475 12 475 R3 R14 221 IN C1 4.7 35V 1 R9 X5 11 R8 X5 9 7805 GND X5 R13 221 R4 X1 Vdd X3 OUT MC14489 18 15V Vss 14 CLOCK 10 /ENABLE 18 DATA OUT 500 8 .0047 C7 50V 500 3 C10 50V 13 BANK2 9 Vdd X4 0.1 MC14489 Vss 14 g 20 f 1 Rx 8 C8 .0047 16 BANK4 a 7 15 BANK3 b 6 3 Vdd c 5 X4 R2 3 C3 50V DR.
18/15 3 S16668-11 .1/50 C7,C8,C9 3 S16668-6 4700pF/50 D1 1 T12199-1 1N4004 DISP1,DISP2,DISP3,DISP5 6 S17395-2 DISPLAY J10 1 S20380-8 RT ANGLE HEADER LED3 1 T13657-6 RED LED R1,R2,R3,R4,R13,R14 6 S19400-2210 221 1/4W R5,R6,R7 3 S19400-1002 10K 1/4W R8,R9,R10 3 S19400-4750 475 1/4W R11,R12 2 S19400-1501 1.5K 1/4W X1 1 S15128-5 +5V REG. X3,X4 2 S20496-1 IC,MC14489,CMOS,DRIVER,LED,CC,MCU(SS) X5 1 S17900-8 14 PIN I.C. (SS) DISP3 DISP2 X4 DISPLAY L10952-1 1.
Return to Master TOC SVM ERROR REPORTING FORM We need to know if there are errors in our manuals. We also value any suggestions as to additional tests or procedures that would make this SVM a better tool for you. If you discover new or different “Problems or Symptoms” that are not covered in the three column troubleshooting chart, please share this information with us. Please include the machine’s code number and how the problem was resolved.