Lincoln Electric SVM158-A manual

SVM158-A April, 2002 Safety Depends on Y ou Lincoln arc welding and cutting equipment is designed and built with safety in mind. However , your overall safety can be increased by pr oper installation . . . and thoughtful operation on your part. DO NOT INST ALL, OPERA TE OR REP AIR THIS EQUIPMENT WITHOUT READ- ING THIS MANUAL AND THE SAFETY PRECAUTI[...]

Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC i SAFETY i FOR ENGINE powered equipment. 1.a. T urn the engine off before troubleshooting and maintenance work unless the maintenance work requires it to be running. ____________________________________________________ 1.b. Operate engines in open, well-ventilated a[...]

Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC ii SAFETY ii ARC RA YS can burn. 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. Headshield and filter lens should conform to ANSI Z87. I standards. 4.b. U[...]

SAFETY iii iii V350-PRO Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC FOR ELECTRICALL Y powered equipment. 8.a. T urn off input power using the disconnect switch at the fuse box before working on the equipment. 8.b. Install equipment in accordance with the U.S. National Electrical Code, all local codes and the [...]

SAFETY iv iv V350-PRO Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC 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 suiv- antes: Sûre[...]

MASTER T ABLE OF CONTENTS FOR ALL SECTIONS v v V350-PRO Page Safety .................................................................................................................................................i-iv Installation .......................................................................................................................[...]

SectionA-1 Section A-1 V350-PRO Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC T ABLE OF CONTENTS - INST ALLA TION SECTION - Installation T echnical Specifications ....................................................................................................... ......A-2 Safety Precautions.................[...]

V350-PRO 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 A-2 INST ALLA TION A-2 TECHNICAL SPECIFICA TIONS - INVERTEC V350-PRO INPUT AC VOL T AGE & DC OUTPUT Product Ordering Input AC Rated DC Output Output Weight Dimension[...]

A-3 A-3 V350-PRO 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 INST ALLA TION ELECTRIC SHOCK can kill . • TURN THE INPUT POWER OFF A T THE DISCONNECT SWITCH BEFORE A TTEMPTING TO CONNECT OR DIS- CONNECT INPUT POWER LINES, [...]

INST ALLA TION A-4 A-4 V350-PRO 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 LN-7 Connection Instructions An LN-7 can only be used with the “Factory” & “ Advanced Process ” versions of the 350-Pro. • T urn the[...]

INST ALLA TION A-5 A-5 V350-PRO 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 P ARALLEL OPERA TION The V350-Pro can be paralleled in CC mode. For best results, the currents of each machine should be rea- sonably well shared.[...]

NOTES A-6 A-6 V350-PRO 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[...]

Section B-1 Section B-1 V350-PRO T ABLE OF CONTENTS - OPERA TION SECTION - Operation ............................................................................................................................... Section B Safety Precautions ............................................................................................................[...]

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 B-2 B-2 V350-PRO OPERA TION ELECTRIC SHOCK can kill. • Do not touch electrically live parts or electrode with skin or wet clothing. • Insulate yourself from work and ground. [...]

OPERA TION B-3 B-3 V350-PRO 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 • The unit will power up in "pre-determined preferred" trigger modes. STICK = ON CV = REMOTE TIG = REMOTE if remote output controls are at[...]

OPERA TION B-4 B-4 V350-PRO 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 • The Arc Control regulates the Arc Force to adjust the short circuit current. The minimum setting (-10) will produce a "soft" arc and wil[...]

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 OPERA TION B-5 B-5 V350-PRO 7A. ADV ANCED PROCESS P ANEL (See Figure B.2) To program W elding modes. SELECT knob is used to Scroll through all Welding modes. The MEMOR Y but- ton[...]

OPERA TION B-6 B-6 V350-PRO 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 CONTROLS: (See Figure B.2.) The MEMOR Y button and SELECT knob are used together to select a welding process and store it in memory (M1 thru M8). The [...]

B-7 B-7 V350-PRO 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 WELD MODE DET AILS: Mode Range Comments Stick Soft 5 - 425 amps The stick soft mode is the best selection for general stick applications. Arc Control = Arc Force[...]

B-8 B-8 V350-PRO 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 PULSE PROGRAMS: MODE Range (IPM*) .030 Steel 65 - 1200 .035 Steel 55 - 800 .045 Steel 50 - 700 .052 Steel 75 - 550 .045 Metal Core 50 - 650 .052 Metal Core 50 - [...]

B-9 B-9 V350-PRO 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 LOWER CASE P ANEL The output studs, line switch and remote connector are located on the lower case front. 9. Both terminals are "T wist-Mate" connector[...]

B-10 B-10 V350-PRO 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 AUXILIAR Y POWER • 1 15V AC, 42V AC and 24V AC power is available from the 14-pin MS-style connector . The Construction model of the Invertec V350-Pro does n[...]

B-11 B-11 V350-PRO 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 SPECIAL WELDING PROCESSES AV AILABLE ON THIS MACHINE POWER MODE™ The Power Mode™ process was developed by Lincoln to maintain a stable and smooth arc at lo[...]

B-12 B-12 V350-PRO 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 PULSE WELDING (GMA W-P) The pulsed-arc process is, by definition, a spray trans- fer process wherein spray transfer occurs in pulses at regularly spaced interv[...]

B-13 B-13 V350-PRO 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 PULSE-ON-PULSE™ (GMA W-PP) Pulse on Pulse™ is a Lincoln process specifically designed for use in welding relatively thin (less than 1/4" thick) alumin[...]

B-14 B-14 V350-PRO 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 NOTES[...]

C-1 C-1 V350-PRO Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC T ABLE OF CONTENTS - ACCESSORIES SECTION - Accessories ........................................................................................................................... Section C Cobramatic & Tig Module Connection Instructions ........[...]

ACCESSORIES C-2 C-2 V350-PRO 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 Cobramatic Connection Instructions AC obramatic can only be used with a Factory or "CE" version of the V350 1. T urn the Invertec power swi[...]

ACCESSORIES C-3 C-3 V350-PRO 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 QUICK DISCONNECT PLUGS A quick disconnect system is used for the welding cable connections. The K852-70 is designed to accept a welding cable size of[...]

CONNECTION OF LINCOLN ELEC- TRIC WIRE FEEDERS CONNECTION OF THE LN-25 TO THE V350-PRO “ACROSS THE ARC” WITH OPTIONAL 6 PIN K441-1 REMOTE CON- TROL. 1. Remove input power to the V350-PRO. 2. Connect the electrode cable to the output terminal of polarity requir ed by the electrode. Connect the work lead to the other terminal. W elding cable must [...]

CONNECTION OF THE LN-25 TO THE V350-PRO “ACROSS THE ARC” WITH OPTIONAL 6 PIN K857 REMOTE CON- TROL. 1. Remove input power to the V350-PRO. 2. Connect the electrode cable to the output terminal of polarity requir ed by the electrode. Connect the work lead to the other terminal. W elding cable must be sized for current and duty cycle of the appli[...]

ACCESSORIES C-6 C-6 V350-PRO 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 CONNECTION OF THE LN-25 WITH K431 REMOTE OPTION TO THE V350-PRO. NOTE: AN LN-25 CAN ONL Y BE USED WITH A F AC- TO RY OR “CE” VERSION OF THE V350-[...]

ACCESSORIES C-7 C-7 V350-PRO 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 CONNECTION OF THE K867 ADAPTER FOR USE WITH LN-25 WITH K431 OPTION/V350-PRO. 1. Insulate each unused lead individually . 2. Remove 6 pin plug from K4[...]

ACCESSORIES C-8 C-8 V350-PRO 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 CONNECTION OF THE LN-7 TO THE V350- PRO USING K480 CONTROL CABLE (SEE FIGURE C.5) NOTE: AN LN-7 CAN ONL Y BE USED WITH A F AC- TO RY OR “CE” VERS[...]

ACCESSORIES C-9 C-9 V350-PRO 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 CONNECTION OF THE K867 ADAPTER FOR USE WITH THE K291 OR K404 INPUT CABLES AND LN-7. 1. Insulate each unused lead individually . 2. Splice leads and i[...]

C-10 C-10 V350-PRO 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 ACCESSORIES CONNECTION OF THE LN-742 TO THE V350-PRO (SEE FIGURE C.7) NOTE: AN LN-7 CAN ONL Y BE USED WITH A F AC- TO RY OR “CE” VERSION OF THE V350-PRO. 1[...]

CONNECTION OF THE LN-10 TO THE V350-PRO USING THE K1505 CONTROL CABLE. NOTE: AN LN-10 CAN ONL Y BE USED WITH A F AC- TO RY OR “CE” VERSION OF THE V350-PRO. 1. Remove input power to the V350-PRO. 2. Connect the K1505 contr ol cable from the LN-10 to the Invertec 24/42V AC 14 pin amphenol con- necter on the rear of the V350-PRO. 3. Connect the el[...]

NOTES C-12 C-12 V350-PRO 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[...]

Section D-1 Section D-1 V350-PRO T ABLE OF CONTENTS -MAINTENANCE- Maintenance ......................................................................................................................... Section D Capacitor Dischar ge Procedur e .................................................................................................D -2 V isua[...]

MAINTENANCE D-2 D-2 V350-PRO 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 Have qualified personnel do the maintenance work. Always use the greatest care when working near moving parts. Do not put your hands near the cooling[...]

W ARNING W ARNING AVI SO DE PRECAUCION A TTENTION ! ! ! ! Lo re m ipsum d olo r s i t amet c onsec tetu er a dip is cing Lore m ip s um dolo r s it amet consectetuer adipi sc i ng eli t, ed di am non um my ni bh e ui smod t incidun t ut e lit, e d d iam n on ummy ni b h e uis mo d tincid u nt ut lao re e t dolor e magna a liquam era t laoree t dolo[...]

NOTES D-4 D-4 V350-PRO 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[...]

Section E-1 Section E-1 V350-PRO Theory of Operation ............................................................................................................. Section E General Description ....................................................................................................................E-2 Input Line V oltage, Auxiliary T rans[...]

FIGURE E.2 – INPUT VOL T AGE AND PRECHARGE Remote Board Mode P anel Display P anel Control Board Choke P ositive Output Te r minal Negative Output Te r minal To Control Board Current F eedbac k Reconnect Switch Output V oltage Sense Input switch Input Rectifier Auxiliary Tr ansformer Fa n Po we r Board 14 Pin Amphenol 6 Pin Amphenol Remote Contro[...]

SWITCH BOARD & MAIN TRANSFORMER There is one switch boar d in the Invertec V350-Pro. This board incorporates two pairs of input capacitors, two insulated gate bipolar transistor (IGBT) switching circuits, a fan motor drive cir cuit, and a voltage/fre- quency capacitor feedback circuit. The two capaci- tors in a pair are always in series with ea[...]

THEOR Y OF OPERA TION E-4 E-4 V350-PRO 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 FIGURE E.4 – POWER BOARD, CONTROL BOARD AND SERIAL PERIPHERAL INTERF ACE (SPI) COMMUNICA TIONS Remote Board Mode P anel Display P anel Co[...]

OUTPUT RECTIFIER AND CHOKE The output rectifier r eceives the AC output from the main transformer secondary and rectifies it to a DC voltage level. Since the output choke is in series with the negative leg of the output rectifier and also in series with the welding load, a filtered DC output is applied to the machine’ s output terminals. THEOR Y [...]

THERMAL PROTECTION T wo normally closed (NC) thermostats protect the machine from excessive operating temperatur es. These thermostats are wir ed in series and are con- nected to the control boar d. One of the thermostats is located on the heat sink of the switch board and the other is located on the output choke. Excessive tem- peratures may be ca[...]

INSULA TED GA TE BIPOLAR TRANSIST OR (IGBT) OPERA TION An IGBT is a type of transistor . IGBT are semiconduc- tors well suited for high frequency switching and high current applications. Example A in Figure E.6 shows an IGBT in passive mode. There is no gate signal, zer o volts relative to the source, and ther efore, no curr ent flow . The drain te[...]

PULSE WIDTH MODULA TION The term Pulse Width Modulation is used to describe how much time is devoted to conduction in the posi- tive and negative portions of the cycle. Changing the pulse width is known as modulation. Pulse Width Modulation (PWM) is the varying of the pulse width over the allowed range of a cycle to affect the output of the machine[...]

V350-PRO Section F-1 Section F-1 Tr oubleshooting & Repair Section ................................................................................. Section F How to Use T roubleshooting Guide ....................................................................................F-2 PC Board T roubleshooting Pr ocedures and Replacement ...........[...]

HOW TO USE TROUBLESHOOTING GUIDE Service and repair should be performed by only Lincoln Electric Factory T rained Personnel. Unauthorized repairs performed on this equipment may r esult 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 safet[...]

V350-PRO 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 TROUBLESHOOTING & REP AIR F-3 F-3 Sometimes machine failures appear to be due to PC board failures. These problems can sometimes be traced to poor electrical connect[...]

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 V350-PRO TROUBLESHOOTING & REP AIR F-4 F-4 Observe Safety Guidelines TROUBLESHOOTING GUIDE detailed in the beginning of this manual. CAUTION If for any reason you do not unde[...]

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 V350-PRO TROUBLESHOOTING & REP AIR F-5 F-5 TROUBLESHOOTING GUIDE Observe Safety Guidelines detailed in the beginning of this manual. CAUTION If for any reason you do not unde[...]

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 V350-PRO TROUBLESHOOTING & REP AIR F-6 F-6 Observe Safety Guidelines TROUBLESHOOTING GUIDE detailed in the beginning of this manual. CAUTION If for any reason you do not unde[...]

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 V350-PRO TROUBLESHOOTING & REP AIR F-7 F-7 Observe Safety Guidelines TROUBLESHOOTING GUIDE detailed in the beginning of this manual. CAUTION If for any reason you do not unde[...]

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 V350-PRO TROUBLESHOOTING & REP AIR F-8 F-8 Observe Safety Guidelines TROUBLESHOOTING GUIDE detailed in the beginning of this manual. CAUTION If for any reason you do not unde[...]

SERVICE F ACILITY CORRECTIVE ACTION CORRECTIVE ACTION DESCRIPTION/ DEFINITION 31 32 Main transformer primary over current Capacitor bank “A” (lower) is under voltage Tu rn the machine off and back on to reset the machine. If condition persists, contact an authorized Lincoln Field Service Facility . Make sure the r econnect switches are configur[...]

V350-PRO 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 SERVICE F ACILITY CORRECTIVE ACTION CORRECTIVE ACTION DESCRIPTION/ DEFINITION 33 34 Capacitor bank "B"(upper) is under voltage. Capacitor bank "A"(lo[...]

V350-PRO 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 SERVICE F ACILITY CORRECTIVE ACTION CORRECTIVE ACTION DESCRIPTION/ DEFINITION 35 37 Capacitor bank "B"(lower) is over voltage. The soft start function failed. [...]

V350-PRO 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 SERVICE F ACILITY CORRECTIVE ACTION CORRECTIVE ACTION DESCRIPTION/ DEFINITION 39 43 44 Electrical "glitch" on the primary over current fault detector circuit. [...]

V350-PRO 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 SERVICE F ACILITY CORRECTIVE ACTION CORRECTIVE ACTION DESCRIPTION/ DEFINITION 47 “bad node” “####” Electrical "glitch" on the V/F signals from the main[...]

NOTES F-14 F-14 V350-PRO 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[...]

W ARNING 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 TROUBLESHOOTING & REP AIR F-15 F-15 V350-PRO INPUT FIL TER CAP ACITOR DISCHARGE PROCEDURE Service and repair should be performed by only Lincoln Electric factory tra[...]

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 TROUBLESHOOTING & REP AIR F-16 F-16 V350-PRO ELECTRIC SHOCK can kill. • Have an electrician install and service this equipment. • T urn the input power off at the fuse bo[...]

MAIN SWITCH BOARD TEST Service and repair should be performed by only Lincoln Electric factory trained personnel. Unauthorized repairs performed on this equipment may r esult 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 [...]

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 TROUBLESHOOTING & REP AIR F-18 F-18 V350-PRO MAIN SWITCH BOARD TEST (continued) FIGURE F .2 MAIN SWITCH BOARD LEAD LOCA TIONS TEST PROCEDURE 1. Remove input power to the V350[...]

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 TROUBLESHOOTING & REP AIR F-19 F-19 V350-PRO MAIN SWITCH BOARD TEST (continued) T ABLE F .1. SWITCH BOARD RESIST ANCE TEST 6. If any test fails replace the switch boar d. See[...]

NOTES F-20 F-20 V350-PRO 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[...]

TROUBLESHOOTING & REP AIR F-21 F-21 V350-PRO 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 INPUT RECTIFIER TEST Service and repair should be performed by only Lincoln Electric factory trained personnel. Unauthorized repa[...]

TEST PROCEDURE 1. Remove input power to the V350-PRO machine. 2. Using a 5/16” nut driver , remove the case wraparound cover . 3. Perform the Capacitor Discharge Procedure detailed earlier in this section. 4. Locate the input rectifier and associated leads. See Figure F .3. 5. Carefully r emove the silicone sealant from leads 207, 207A, and 209. [...]

TROUBLESHOOTING & REP AIR F-23 F-23 V350-PRO 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 9. If the input rectifier does not meet the acceptable readings outlined in T able F .2 the component may be faulty . Replace Not[...]

NOTES F-24 F-24 V350-PRO 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[...]

F-25 F-25 V350-PRO 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 TROUBLESHOOTING & REP AIR POWER BOARD TEST Service and repair should be performed by only Lincoln Electric factory trained personnel. Unauthorized repairs [...]

TEST PROCEDURE 1. Remove input power to the V350-PRO machine. 2. Using a 5/16” nut driver , remove the case wraparound cover . 3. Perform the Capacitor Discharge Procedure detailed earlier in this section. 4. Locate the power board and plugs J41, J42 and J43. Do not remove plugs fr om the power board. See Figur e F .4. 5. Carefully apply the corr[...]

TROUBLESHOOTING & REP AIR F-27 F-27 V350-PRO 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 POWER BOARD TEST (CONTINUED) T able F .3 Power Board V oltage Checks CHECK POINT LOCA TION TEST DESCRIPTION CONNECTOR PLUG PIN NO[...]

NOTES F-28 F-28 V350-PRO 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[...]

OUTPUT DIODE MODULES TEST Service and repair should be performed by only Lincoln Electric factory trained personnel. Unauthorized repairs performed on this equipment may r esult 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 a[...]

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 TROUBLESHOOTING & REP AIR F-30 F-30 V350-PRO OUTPUT DIODE MODULES TEST (continued) TEST PROCEDURE 1. Remove input power to the V350-PRO. 2. Locate the output terminals on the[...]

TROUBLESHOOTING & REP AIR F-31 F-31 V350-PRO 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 OUTPUT DIODE MODULES TEST (continued) 5. If 200 ohms is measured then the output diodes are not “shorted”. NOTE: There is a 2[...]

TROUBLESHOOTING & REP AIR OUTPUT DIODE MODULES TEST (continued) F-32 F-32 V350-PRO 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 Figure F .7 Snubber and Output Diode Locations LEFT SIDE Snubber Board Output Diode Modules[...]

AUXILIAR Y TRANSFORMER TEST Service and repair should be performed by only Lincoln Electric factory trained personnel. Unauthorized repairs performed on this equipment may r esult 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[...]

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 TROUBLESHOOTING & REP AIR F-34 F-34 V350-PRO AUXILIAR Y TRANSFORMER TEST (continued) TEST PROCEDURE 1. Remove input power to the V350-PRO. 2. Using a 5/16” nut driver , rem[...]

TROUBLESHOOTING & REP AIR AUXILIAR Y TRANSFORMER NO.1 TEST (continued) F-35 F-35 V350-PRO 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 7. Carefully apply the corr ect input voltage to the V350-PRO and check for the corr[...]

NOTES F-36 F-36 V350-PRO 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[...]

TROUBLESHOOTING AND REP AIR F-37 F-37 V350-PRO 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 CURRENT TRANSDUCER TEST Service and repair should be performed by only Lincoln Electric factory trained personnel. Unauthorized rep[...]

TROUBLESHOOTING AND REP AIR CURRENT TRANSDUCER TEST (continued) F-38 F-38 V350-PRO 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 TEST PROCEDURE 1. Remove input power to the V350-PRO. 2. Using the 5/16” nut driver , remove [...]

TROUBLESHOOTING AND REP AIR CURRENT TRANSDUCER TEST (continued) F-39 F-39 V350-PRO 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 8. Check the feedback voltage from the curr ent transducer using a resistive load bank and with[...]

NOTES F-40 F-40 V350-PRO 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[...]

TROUBLESHOOTING AND REP AIR F-41 F-41 V350-PRO 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 F AN CONTROL AND MOTOR TEST Service and repair should be performed by only Lincoln Electric factory trained personnel. Unauthorized[...]

TROUBLESHOOTING AND REP AIR F AN CONTROL AND MOTOR TEST (continued) F-42 F-42 V350-PRO 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 TEST PROCEDURE 1. Remove the input power to the V350-PRO machine. 2. Using the 5/16” nut [...]

Plug J20 Lead 715+ 1 2 3 4 7 8 6 5 Lead 716- TROUBLESHOOTING AND REP AIR F AN CONTROL AND MOTOR TEST (continued) F-43 F-43 V350-PRO 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 7. If the 115V AC is low or not present check [...]

NOTES F-44 F-44 V350-PRO 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[...]

TROUBLESHOOTING AND REP AIR F-45 F-45 V350-PRO 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 SPI CABLE RESIST ANCE AND VOL T AGE TEST Service and repair should be performed by only Lincoln Electric factory trained personnel.[...]

TROUBLESHOOTING AND REP AIR SPI CABLE RESIST ANCE AND VOL T AGE TEST (continued) F-46 F-46 V350-PRO 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 TEST PROCEDURE 1. Remove the input power to the V350-PRO. 2. Using the 5/16”[...]

VOL T AGE AND CURRENT CALIBRA TION PROCEDURE Service and repair should be performed by only Lincoln Electric factory trained personnel. Unauthorized repairs performed on this equipment may r esult in danger to the technician or machine operator and will invalidate your factory warranty . For your safety and to avoid electrical shock, please observe[...]

TROUBLESHOOTING AND REP AIR VOL T AGE AND CURRENT CALIBRA TION PROCEDURE (continued) F-48 F-48 V350-PRO 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 CALIBRA TION CHECK The calibration of the V350-PRO can be checked using a [...]

CURRENT CALIBRA TION PROCEDURE 1. Connect the resistive load band (appr oxi- mately .087 ohms) and test ammeter to the welding output terminals. 2. Press and hold in the Mode Select/Memory button. 3. T ur n on the V350-PRO. 4. Rotate the Output Control knob until the display reads “cur cAL”. 5. Release the Mode Select/Memory button. 6. The left[...]

NOTES F-50 F-50 V350-PRO 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[...]

CONTROL BOARD REMOV AL AND REPLACEMENT 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 operator and will invalidate your factory warranty . For your safety and to avoid electrical shock, please observe all sa[...]

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 V350-PRO TROUBLESHOOTING & REP AIR F-52 F-52 PROCEDURE 1. Remove input power to the V350-PRO. 2. Using a 5/16” nut driver remove the case wrap- around cover . 3. Perform th[...]

Observe static precautions detailed in PC Board T roubleshooting Procedures at the beginning of this section. 6. Using a flat head screwdriver remove the two screws and their washers fr om above and below the input power switch. See Figure F .17. 7. Using a phillips head screwdriver r emove the four screws fr om around the two welder output termi- [...]

V350-PRO 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 12. Using a 3/8” nut driver remove the two mounting nuts from the top two corners of the control board. See Figur e F .19. 13. Cut any necessary cable ties. 14. Replac[...]

DISPLA Y BOARD REMOV AL AND REPLACEMENT Service and repair should be performed by only Lincoln Electric factory trained personnel. Unauthorized repairs performed on this equipment may r esult 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 [...]

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 V350-PRO TROUBLESHOOTING & REP AIR F-56 F-56 FIGURE F.20. – DISPLAY BOARD LOCATION W ARNING REMOTE POWER OFF ON A AMPS A V VOLTS WELD TERMINALS SELECT OUTPUT HOT S TART ARC[...]

TROUBLESHOOTING & REP AIR DISPLA Y BOARD REMOV AL & REPLACEMENT (continued) F-57 F-57 V350-PRO 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 FIGURE F.21. – CASE FRONT SCREW LOCATION REMOTE ON REMOTE LOCAL WELD TERM[...]

10. Remove plug J37 from the display board. See the Wiring Diagram. 11. Remove plug J3 originating from the contr ol board located dir ectly across fr om the display board. See the Wiring Diagram. 12. Remove the display board. Note: Gentle prying from behind the boar d may be requir ed. 13. Replace the display board. 14. Replace plugs #J3 and #J37 [...]

MAIN SWITCH BOARD REMOV AL AND REPLACEMENT Service and repair should be performed by only Lincoln Electric factory trained personnel. Unauthorized repairs performed on this equipment may r esult in danger to the technician or machine operator and will invalidate your factory warranty . For your safety and to avoid electrical shock, please observe a[...]

PROCEDURE 1. Remove the input power to the V350-PRO. 2. Using a 5/16” nut driver remove the case wrap- around cover . 3. Perform the Input Filter Capacitor Discharge Procedure detailed earlier in this section. Observe static precautions detailed in PC Board Tr oubleshooting Procedures at the beginning of this section. Failure to do so can r esult[...]

V350-PRO 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 TROUBLESHOOTING & REP AIR F-61 F-61 FIGURE F.23. – 3/16” ALLEN BOLT LOCATION FIGURE F.24. – NYLON MOUNTING PIN - + - + - + - + 3/16" ALLEN BOL TS MAIN SWI[...]

NOTES F-62 F-62 V350-PRO 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[...]

ADV ANCED PROCESS P ANEL REMOV AL AND REPLACEMENT Service and repair should be performed by only Lincoln Electric factory trained personnel. Unauthorized repairs performed on this equipment may r esult in danger to the technician or machine operator and will invalidate your factory warranty . For your safety and to avoid electrical shock, please ob[...]

V350-PRO 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 TROUBLESHOOTING & REP AIR F-64 F-64 FIGURE F.25. – MODE BOARD LOCATION WARN ING REMOTE POWER OFF ON A AMPS A V VOLTS WELD TERMINALS SELECT OUTPUT HOT S TART ARC C [...]

TROUBLESHOOTING & REP AIR F-65 F-65 V350-PRO 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 FIGURE F.26. – CASE FRONT SCREW REMOVAL REMOTE REMOTE ON ON REMOTE REMOTE LOCAL LOCAL WELD TERMINALS OUTPUT CONTROL SELECT SELE[...]

TROUBLESHOOTING & REP AIR F-66 F-66 V350-PRO 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 ADV ANCED PROCESS P ANEL REMOV AL AND REPLACEMENT (continued) FIGURE F.27.. – CASE FRONT 9. Remove plug #J33 from the r emote b[...]

TROUBLESHOOTING & REP AIR F-67 F-67 V350-PRO 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 ADV ANCED PROCESS P ANEL REMOV AL AND REPLACEMENT (continued) FIGURE F.28. – SCREW IN CAP Small Flathead Scre wdr iv er 18. Rep[...]

NOTES F-68 F-68 V350-PRO 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[...]

REMOTE BOARD REMOV AL AND REPLACEMENT Service and repair should be performed by only Lincoln Electric factory trained personnel. Unauthorized repairs performed on this equipment may r esult 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 sa[...]

V350-PRO 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 TROUBLESHOOTING & REP AIR F-70 F-70 FIGURE F.29. – REMOTE BOARD LOCATION W ARNING REMOTE POWER OFF ON A AMPS A V VOLTS WELD TERMINALS SELECT OUTPUT HOT S TAR TA RC[...]

V350-PRO 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 TROUBLESHOOTING & REP AIR F-71 F-71 REMOTE BOARD REMOV AL AND REPLACEMENT (continued) 5. Using a 5/16” nut driver remove the two screws from the bottom fr ont of t[...]

10. Remove plug J37 fr om the display board. See Wiring Diagram. 11. Remove plugs J33, J333 and J331 fr om the rem o te board. 12. Using a flat head screwdriver , remove the two mounting screws and washers fr om the bottom of the remote boar d. See Figure F .31. 13. Remove the remote boar d. 14. Replace the remote boar d. 15. Replace the two flat h[...]

SNUBBER BOARD REMOV AL AND REPLACEMENT Service and repair should be performed by only Lincoln Electric factory trained personnel. Unauthorized repairs performed on this equipment may r esult 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 s[...]

PROCEDURE 1. Remove input power to the V350-PRO. 2. Using a 5/16” nut driver remove the case wrap- around cover . 3. Perform the Input Filter Capacitor Discharge Procedure detailed earlier in this section. 4. Locate the snubber board.. See Figur e F .32. 5. Remove small lead #B1 fr om the board. See Figure F .33. 6. Remove the four bolts using a [...]

POWER BOARD REMOV AL AND REPLACEMENT Service and repair should be performed by only Lincoln Electric factory trained personnel. Unauthorized repairs performed on this equipment may r esult 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 saf[...]

PROCEDURE 1. Remove input power to the V350-PRO. 2. Using a 5/16” nut driver remove the case wrap- around cover . 3. Perform the Input Filter Capacitor Discharge Procedure detailed earlier in this section. 4. Locate the power board. See Figur e F .34. TROUBLESHOOTING & REP AIR F-76 F-76 V350-PRO Return to Section TOC Return to Section TOC Ret[...]

5. Locate the three plug connections. J41, J42 and J43. See figure F .35. 6. Car efully remove the thr ee plugs from the power board. 7. Remove the three nuts and at the corners of the board using a 3/8” nut driver . Board is r eady for r emoval. 8. Remove the power board. 9. Replace with new power board. 10. Secure the new power boar d into its [...]

NOTES F-78 F-78 V350-PRO 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[...]

TROUBLESHOOTING & REP AIR F-79 F-79 V350-PRO 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 INPUT RECTIFIER REMOV AL AND REPLACEMENT Service and repair should be performed by only Lincoln Electric factory trained personne[...]

PROCEDURE 1. Remove input power to the V350-PRO. 2. Using a 5/16” nut driver remove the case wraparound cover . 3. Perform the Input Filter Capacitor Discharge Procedure detailed earlier in this section. 4. Locate the input rectifier . See figure F .36. 5. Car efully remove the silicon sealant insulating the six input rectifier terminals. 6. Remo[...]

9. Apply a thin coat of Penetrox A-13 heatsink com- pound to the point of contact between the input r ectifier and the mounting surface. 10. Secur e the new input bridge into its proper posi- tion with the two 3/16”in. allen mounting screws previously r emoved. T orque to 44 inch pounds. 11. Reconnect the previously r emoved leads to their proper[...]

NOTES F-82 F-82 V350-PRO 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[...]

F-83 F-83 V350-PRO 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 TROUBLESHOOTING & REP AIR OUTPUT RECTIFIER MODULES REMOV AL AND REPLACEMENT Service and repair should be performed by only Lincoln Electric factory trained[...]

PROCEDURE 1. Remove input power to the V350-PRO. 2. Using a 5/16” nut driver remove the case wrap- around cover . 3. Perform the Input Filter Capacitor Discharge Procedure detailed earlier in this section. 4. Locate the output diode modules located behind the snubber board. See figur e F .38. 5. Before the output rectifier modules can be r eached[...]

8. Under the copper plate pr eviously removed, ther e is an allen bolt. Remove it using a 9/64” allen wrench. See Figur e F .39. 9. Using a 7/16” socket remove the mounting bolts at the top and bottom of the modules. See Figure F .39. 10. The output rectifier modules are r eady for removal and/or replacement. 11. Before replacing the diode modu[...]

NOTES F-86 F-86 V350-PRO 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[...]

F-87 F-87 V350-PRO 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 TROUBLESHOOTING & REP AIR CURRENT TRANSDUCER REMOV AL AND REPLACEMENT Service and repair should be performed by only Lincoln Electric factory trained perso[...]

PROCEDURE 1. Remove input power to the V350-PRO. 2. Using a 5/16” nut driver remove the case wrap- around cover . 3. Perform the Input Filter Capacitor Discharge Procedure detailed earlier in this section. 4. Using a 5/16” nut driver remove the four scr ews from the bottom and right side of the r ear assem- bly . See Figure F .40. TROUBLESHOOTI[...]

5. Label and r emove the five leads connected to the r econnect panel. Pliers may be necessary . 6. Label and remove the two leads connected to the CB2 circuit br eaker . 7. Using a crescent wrench, r emove the lar ge plastic nut from ar ound the input power line located at bot- tom of the rear assembly . See Figure F .41. 8. Locate the steel nut l[...]

11. The back of the machine may now gently be pulled away to gain access to the current trans- ducer . Note: The rear of the machine cannot be r emoved completely . 12. Carefully swing the r ear of the machine open to the left while facing the rear of the machine. 13. Perform the Snubber Board Removal Procedure . 14. Remove leads #X2 and #20 from t[...]

21. Replace the current transducer . 22. Replace the two 3/8” mounting nuts previously re moved. 23. Reconnect plug #J90 to the current transducer . 24. Replace any necessary cable ties previously cut. 25. From the r ear of the machine, r eplace the heavy flex lead to the bottom of the output diode heatsink assembly using a 1/2” wrench. Note: D[...]

TROUBLESHOOTING AND REP AIR RETEST AFTER REP AIR F-92 F-92 V350-PRO 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 Retest a machine: If it is rejected under test for any r eason that requir es you to remove any part which cou[...]

TROUBLESHOOTING AND REP AIR RETEST AFTER REP AIR F-93 F-93 V350-PRO 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 Required Action Expected Results Rt. display Lft. display Test Steps 13 14 15 16 17 18 19 20 21 22 T urn the A[...]

TROUBLESHOOTING AND REP AIR RETEST AFTER REP AIR F-94 F-94 V350-PRO 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 Required Action Expected Results Rt. display Lft. display Test Steps 23 24 25 26 27 28 29 30 31 32 V erify tha[...]

TROUBLESHOOTING AND REP AIR RETEST AFTER REP AIR F-95 F-95 V350-PRO 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 Required Action Expected Results Rt. display Lft. display Test Steps 33 34 35 36 37 38 39 40 41 42 43 44 45 Ad[...]

TROUBLESHOOTING AND REP AIR RETEST AFTER REP AIR F-96 F-96 V350-PRO 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 Required Action Expected Results Rt. display Lft. display Test Steps 46 47 48 dcon GAS GAS 14-pIn roCP On OFF [...]

G-1 ELECTRICAL DIAGRAMS G-1 T ABLE OF CONTENTS -ELECTRICAL DIAGRAMS SECTION- ELECTRICAL DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SECTION G WIRING DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . G-2 [...]

ELECTRICAL DIAGRAMS G-2 V350-PRO WIRING DIAGRAM - INVERTEC V350-PRO NOT ES: N.A. 1. FOR MACHINES WIT H RED, BLACK AND WHI TE POWER CORDS FOR SI NGLE PHASE INPUT : CONNECT GREEN LEAD TO GROUND PER NATIONAL ELECTRI CAL CODE. CONNECT BLACK AND WHI TE LEADS TO SUPPLY CI RCUIT . WR AP R ED LE A D W IT H T AP E TO PR OV ID E 600 V. I NS U LATI ON . FO R [...]

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 ELECTRICAL DIAGRAMS G-3 V350-PRO SCHEMA TIC - COMPLETE MACHINE G4093 B SPI POWER SUPPLY GREEN L3 G GND POWER BOARD (+)15 VOLT SPI GROUND SPI MOSI SCK (+)5 VOLT SPI MISO CS3 CS2 C[...]

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 ELECTRICAL DIAGRAMS G-4 V350-PRO SCHEMA TIC - DIGIT AL CONTROL PC BOARD #1 G-4 NOTE: This diagram is for reference only . It may not be accurate for all machines covered by this [...]

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 ELECTRICAL DIAGRAMS G-5 V350-PRO SCHEMA TIC - DIGIT AL CONTROL PC BOARD #2 G-5 NOTE: This diagram is for reference only . It may not be accurate for all machines covered by this [...]

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 ELECTRICAL DIAGRAMS G-6 V350-PRO SCHEMA TIC - DIGIT AL CONTROL PC BOARD #3 G-6 NOTE: This diagram is for reference only . It may not be accurate for all machines covered by this [...]

ELECTRICAL DIAGRAMS G-7 V350-PRO SCHEMA TIC - DIGIT AL CONTROL PC BOARD #4 G-7 NOTE: 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 Master TOC Return to Master TOC Return to Master TOC Return to Mas[...]

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 ELECTRICAL DIAGRAMS G-8 V350-PRO SCHEMA TIC - POWER SUPPL Y PRINTED CIRCUIT BOARD .1 C53 Vfb2 Vref 1 100K R29 CNY17-3 OCI2 42 1 6 5 .5W 27V DZ2 VFB CS COMP RT/CT VCC OUT VREF GND[...]

ELECTRICAL DIAGRAMS G-9 V350-PRO SCHEMA TIC - SWITCH PRINTED CIRCUIT BOARD G-9 NOTE: 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 Master TOC Return to Master TOC Return to Master TOC Return to Mas[...]

NOTE: Lincoln Electric assumes no responsibility for liablilities resulting from board level troubleshooting. PC Board repairs will invalidate your factory warranty . Individual Printed Circuit Board Components are not available from Lincoln Electric. This information is pro- vided for reference only . Lincoln Electric discourages board level troub[...]

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 ELECTRICAL DIAGRAMS G-11 V350-PRO SCHEMA TIC - DISPLA Y PRINTED CIRCUIT BOARD G-11 NOTE: This diagram is for reference only . It may not be accurate for all machines covered by t[...]

NOTE: Lincoln Electric assumes no responsibility for liablilities resulting from board level troubleshooting. PC Board repairs will invalidate your factory warranty . Individual Printed Circuit Board Components are not available from Lincoln Electric. This information is pro- vided for reference only . Lincoln Electric discourages board level troub[...]

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 ELECTRICAL DIAGRAMS G-13 V350-PRO SCHEMA TIC - LED SELECT PRINTED CIRCUIT BOARD G-13 NOTE: This diagram is for reference only . It may not be accurate for all machines covered by[...]

NOTE: Lincoln Electric assumes no responsibility for liablilities resulting from board level troubleshooting. PC Board repairs will invalidate your factory warranty . Individual Printed Circuit Board Components are not available from Lincoln Electric. This information is pro- vided for reference only . Lincoln Electric discourages board level troub[...]

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 ELECTRICAL DIAGRAMS G-15 V350-PRO SCHEMA TIC - LED POTENTIOMETER PRINTED CIRCUIT BOARD G-15 NOTE: This diagram is for reference only . It may not be accurate for all machines cov[...]

NOTE: Lincoln Electric assumes no responsibility for liablilities resulting from board level troubleshooting. PC Board repairs will invalidate your factory warranty . Individual Printed Circuit Board Components are not available from Lincoln Electric. This information is pro- vided for reference only . Lincoln Electric discourages board level troub[...]

ELECTRICAL DIAGRAMS G-17 V350-PRO SCHEMA TIC-SPI REMOTE PRINTED CIRCUIT BOARD G-17 NOTE: 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 Master TOC Return to Master TOC Return to Master TOC Return to[...]

NOTE: Lincoln Electric assumes no responsibility for liablilities resulting from board level troubleshooting. PC Board repairs will invalidate your factory warranty . Individual Printed Circuit Board Components are not available from Lincoln Electric. This information is pro- vided for reference only . Lincoln Electric discourages board level troub[...]

ELECTRICAL DIAGRAMS G-19 V350-PRO SCHEMA TIC-SNUBBER PRINTED CIRCUIT BOARD S24761 6-2-2000 G-19 NOTE: 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 Master TOC Return to Master TOC Return to Master [...]

NOTE: Lincoln Electric assumes no responsibility for liablilities resulting from board level troubleshooting. PC Board repairs will invalidate your factory warranty . Individual Printed Circuit Board Components are not available from Lincoln Electric. This information is pro- vided for reference only . Lincoln Electric discourages board level troub[...]

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 col- umn troubleshooting chart, please share this information wi[...]