Lincoln Electric FLEXTEC 650 Service Manual
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Lincoln Electric FLEXTEC 650 Service Manual

Lincoln Electric FLEXTEC 650 Service Manual

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FLEXTEC
650
™
For use with machines having Code Numbers:
11814, 12391
SERVICE MANUAL
SVM230-A
| Issue D ate 13-Apr
© Lincoln Global, Inc. All Rights Reserved.
NOTE: This manual will cover most of the troubleshooting and repair
procedures for the code numbers listed. Some variances may exist when
troubleshooting/repairing later code numbers.

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  • Page 1 NOTE: This manual will cover most of the troubleshooting and repair procedures for the code numbers listed. Some variances may exist when troubleshooting/repairing later code numbers. FLEXTEC ™ For use with machines having Code Numbers: 11814, 12391 SERVICE MANUAL SVM230-A | Issue D ate 13-Apr ©...

  • Page 2: Electric And Magnetic Fields

    Miami, Florida 33135 or CSA Standard W117.2-1974. A Free copy of “Arc Welding Safety” booklet E205 is available from the Lincoln Electric Company, 22801 St. Clair Avenue, Cleveland, Ohio 44117-1199. BE SURE THAT ALL INSTALLATION, OPERATION, MAINTENANCE AND REPAIR PROCEDURES ARE PERFORMED ONLY BY QUALIFIED INDIVIDUALS.

  • Page 3: Electric Shock Can Kill

    SAFETY ELECTRIC SHOCK can kill. ARC RAYS can burn. 3.a. The electrode and work (or ground) circuits 4.a. Use a shield with the proper filter and cover are electrically “hot” when the welder is on. plates to protect your eyes from sparks and Do not touch these “hot”...
  • Page 4 SAFETY WELDING and CUTTING CYLINDER may explode SPARKS can cause fire or if damaged. explosion. 7.a. Use only compressed cylinders containing the correct shielding gas for the 6.a. Remove fire hazards from the welding area.If process used and properly operating this is not possible, cover them to prevent the welding sparks regulators designed for the gas and from starting a fire.
  • Page 5 SAFETY 6. Eloigner les matériaux inflammables ou les recouvrir afin de PRÉCAUTIONS DE SÛRETÉ prévenir tout risque dʼincendie dû aux étincelles. Pour votre propre protection lire et observer toutes les instructions 7. Quand on ne soude pas, poser la pince à une endroit isolé de et les précautions de sûreté...
  • Page 6 2004/108/EC. It was manufactured in conformity with a national standard that implements a harmonized standard: EN 60974-10 Electromagnetic Compatibility (EMC) Product Standard for Arc Welding Equipment. It is for use with other Lincoln Electric equipment. It is designed for industrial and professional use. Introduction All electrical equipment generates small amounts of electromagnetic emission.
  • Page 7 SAFETY Electromagnetic Compatibility (EMC) The size of the surrounding area to be considered will depend on the structure of the building and other activities that are taking place. The surrounding area may extend beyond the boundaries of the premises. Methods of Reducing Emissions Mains Supply Welding equipment should be connected to the mains supply according to the manufacturerʼs recommen- dations.
  • Page 8 - MASTER TABLE OF CONTENTS FOR ALL SECTIONS - Page Safety ................i-vi Installation .

  • Page 9: Table Of Contents

    TABLE OF CONTENTS - INSTALLATION SECTION Installation ................A-1 Technical Specifications .

  • Page 10: Installation

    INSTALLATION TECHNICAL SPECIFICATIONS - FLEXTEC™ 650 POWER SOURCE-INPUT VOLTAGE AND CURRENT MODEL DUTY INPUT VOLTAGE ± 10% INPUT IDLE POWER (W) POWER FACTOR CYCLE AMPERES @ RATED OUTPUT K3060-1 60% Rating 380 / 460 / 575 / 3 / 50 / 60 61 / 50 / 40 230 MAX.
  • Page 11 INSTALLATION WELDING PROCESS PROCESS OUTPUT RANGE (AMPERES) OCV (U OCV (U GMAW (CV) 40-815 GTAW (CC) 10-815 SMAW (CC) 15-815 FCAW-GS 40-815 FCAW-S (CV) 40-815 SAW (CV) 40-815 PHYSICAL DIMENSIONS MODEL HEIGHT WIDTH DEPTH WEIGHT K3060-1 21.8 IN. (554 mm) 16.14 IN.

  • Page 12: Safety Precautions

    INSTALLATION LIFTING SAFETY PRECAUTIONS WARNING The FLEXTEC™ 650 has 2 lifting eyelets and 2 han- dles that can be used to lift the machine. Both handles or both eyelets should be used when lifting the FLEX- ELECTRIC SHOCK can kill. TEC™...

  • Page 13: High Temperature Operation

    INSTALLATION INPUT FUSE AND SUPPLY WIRE HIGH TEMPERATURE OPERATION CONSIDERATIONS WELDER OUTPUT RATINGS AT 55ºC ELEVATED TEMPERATURES Refer to Specification in this Installation Section for AMPS DUTY VOLTS TEMPERATURES recommended fuse, wire sizes and type of the copper CYCLE wires. Fuse the input circuit with the recommended super lag fuse or delay type breakers (also called 100% 55ºC...

  • Page 14: Cable Connections

    INSTALLATION CABLE CONNECTIONS See figure A.2 for locating 6-pin and 14-pin connec- tors on the front of the FLEXTEC™ 650. 6-PIN REMOTE CONTROL CONNECTOR FUNCTION WIRING 6-pin remote 77 Remote potentiometer, 10K control connector 76 Remote potentiometer, wiper for remote or 75 Remote potentiometer, common hand/foot amp- trol.

  • Page 15: Recommended Electrode And Work Cable Sizes For Arc Welding

    INSTALLATION RECOMMENDED ELECTRODE AND The following recommendations apply to all output polarities and weld modes: WORK CABLE SIZES FOR ARC • Select the appropriate size cables per the “Output WELDING Cable Guidelines” (See Table A.1). Excessive volt- age drops caused by undersized welding cables and GENERAL GUIDELINES poor connections often result in unsatisfactory weld- ing performance.

  • Page 16: Control Cable Connections

    INSTALLATION CONTROL CABLE CONNECTIONS GENERAL GUIDELINES Genuine Lincoln control cables should be used at all times (except where noted otherwise). Lincoln cables are specifically designed for the communication and power needs of the FLEXTEC™ 650. Most are designed to be connected end to end for ease of exten- sion.

  • Page 17: Control Setting

    INSTALLATION CONNECTING LF-72 AND LF-74 TO THE FLEXTEC™ 650 WIRE FEEDER 14-PIN CONTROL CABLE K1797-XX LF-72 FLEXTEC™-650 LF-74 ELECTRODE WORK CONTROL SETTING WELD MODE CV, CV-INNERSHIELD WELD TERMINALS REMOTE/LOCAL LOCAL (REMOTE IF K2329-1 INSTALLED) VOLTMETER POLARITY PROCESS DEPENDENT FLEXTEC™ 650...

  • Page 18: Connecting Lf-72 And Lf-74 To The Flextec™ 650

    INSTALLATION A-10 A-10 CONNECTING LN-10 AND DH-10 TO THE FLEXTEC™ 650 WIRE FEEDER 14-PIN CONTROL CABLE K1501-XX LN-10 FLEXTEC™-650 DH-10 ELECTRODE WORK CONTROL SETTING WELD MODE CV, CV-INNERSHIELD WELD TERMINALS REMOTE/LOCAL REMOTE VOLTMETER POLARITY PROCESS DEPENDENT LN-10, DH-10 CONTROL SWITCH SETUP SETTING THE DIP SWITCHES Initial set up of the LN-10, DH-10 control for the system The DIP switches are each labeled with an “ON”...

  • Page 19: Connecting Ln-25 Pro, Ln-25 Pipe & Active8 To The Flextec™ 650

    INSTALLATION A-11 A-11 CONNECTING LN-25 PRO, LN-25 PIPE, ACTIVE8 TO THE FLEXTEC™ 650 WIRE FEEDER LN-25 PRO LN-25 PIPE FLEXTEC™-650 ELECTRODE ACTIVE8 WORK CLIP WORK CONTROL SETTING WELD MODE CV, CV-INNERSHIELD WELD TERMINALS REMOTE/LOCAL LOCAL VOLTMETER POLARITY PROCESS DEPENDENT CONNECTING LN-25 PRO DUAL POWER TO THE FLEXTEC™ 650 WIRE FEEDER CONTROL CABLE K1797-XX LN-25 PRO...
  • Page 20 INSTALLATION A-12 A-12 CONNECTING LN-7 TO THE FLEXTEC™ 650 WIRE FEEDER 14-PIN CONTROL CABLE K1818-XX LN-7 FLEXTEC™-650 ELECTRODE WORK CONTROL SETTING WELD MODE CV, CV-INNERSHIELD WELD TERMINALS REMOTE/LOCAL LOCAL VOLTMETER POLARITY PROCESS DEPENDENT CONNECTING LN-8 AND LN-9 TO THE FLEXTEC™ 650 WIRE FEEDER 14-PIN CONTROL CABLE K1820-XX LN-8...
  • Page 21 INSTALLATION A-13 A-13 CONNECTING NA-3, NA-4, NA-5 TO THE FLEXTEC™ 650 WIRE FEEDER NA-3 14-PIN CONTROL CABLE K1820-XX NA-4 FLEXTEC™-650 NA-5 ELECTRODE WORK FOR NA-3, NA-4 WIRE FEEDERS ONLY: - MOVE JUMPER LEAD ON VARIABLE VOLTAGE BOARD TO "L" PIN. FOR NA-5 WIRE FEEDER ONLY: - MOVE "BLUE"...
  • Page 22 NOTES A-14 A-14 FLEXTEC™ 650...
  • Page 23 TABLE OF CONTENTS - OPERATION SECTION Operation ................B-1 Safety Precautions .

  • Page 24: Operation

    OPERATION SAFETY PRECAUTIONS GRAPHIC SYMBOLS THAT APPEAR ON THIS MACHINE OR IN THIS Read this entire section of operating instructions before operating the machine. MANUAL WARNING INPUT POWER ELECTRIC SHOCK can kill. • Unless using cold feed feature, when feeding with trigger, electrode and drive mechanism are...

  • Page 25: Product Description

    OPERATION GRAPHIC SYMBOLS THAT APPEAR The FLEXTEC™ 650 is designed for the North America and export markets and operates on 3 phase ON THIS MACHINE OR IN THIS 380V, 460V or 575V 50hz or 60hz power. MANUAL DUTY CYCLE REDUCED OPEN The FLEXTEC™...

  • Page 26: Recommended Processes And Equipment

    OPERATION RECOMMENDED PROCESSES AND EQUIPMENT RECOMMENDED PROCESSES The FLEXTEC™ 650 is designed for CC-SMAW, CC- GTAW (lift tig), CV-GMAW, CV-FCAW-SS, CV-FCAW- GS and CV-SAW welding processes. CAG (arc goug- ing) is also supported. PROCESS LIMITATIONS The FLEXTEC™ 650 is suitable only for the processes listed.

  • Page 27: Case Front Control Descriptions

    OPERATION CASE FRONT CONTROL 8. Local/Remote Selector Toggle Switch: Sets the control of the output to local (output control knob) or DESCRIPTIONS remote (K857 hand amptrol or K870 foot amptrol). (See Figure B.1) 9. Arc Force Control Dial 1. Power Switch: Controls input power to the FLEX- 10.

  • Page 28: Case Back Controls

    OPERATION CASE BACK CONTROLS (See Figure B.2) 1. Input Power Cord Access Hole. 2. Access Panel – Allows access for connecting input power and configuring the machine. 3. Input Power Reconnect – Configures the machine for the input supply voltage. 4.

  • Page 29: Internal Controls - Enabling Vrd

    OPERATION INTERNAL CONTROLS - ENABLING To Enter VRD™ Mode (VRD™ Enabled) VRD™ a. For 380V input: Switch #5 in the “ON” Position. INTERNAL CONTROLS DESCRIPTION 1 2 3 4 5 6 7 8 The Control PC Board has one bank of Dip Switches. As shipped from the factory VRD™...

  • Page 30: Power-Up Sequence

    Many variables beyond the control of The Lincoln Electric OUTPUT CONTROL DIAL Company affect the results obtained in applying •...
  • Page 31 OPERATION THERMAL LIGHT WELD TERMINALS ON/REMOTE TOGGLE SWITCH • This status light indicates when the power source has been driven into thermal overload. If the output termi- • This switch determines the trigger location. nals were "ON", the output will be turned back on •...

  • Page 32: Basic Modes Of Operation

    OPERATION B-10 B-10 BASIC MODES OF OPERATION GTAW This weld mode is a constant current (CC) mode fea- SMAW turing continuous control from 10 – 815 amps. It is intended for the GTAW tig welding processes. This weld mode is a constant current (CC) mode fea- Hot Start - Hot start regulates the arc initiation current.

  • Page 33: Cv-Gas

    OPERATION B-11 B-11 CV-GAS CV-INNERSHIELD This weld mode is a constant voltage (CV) mode fea- This weld mode is a constant voltage (CV) mode fea- turing continuous control from 10 to 45 volts. It is turing continuous control from 10 to 45 volts. It is intended for the GMAW, FCAW-GS, MCAW welding intended for the FCAW-SS welding process and arc processes and arc gouging.

  • Page 34: Cv-Saw

    OPERATION B-12 B-12 CV-SAW This weld mode is a constant voltage (CV) mode fea- turing continuous control from 10 to 45 volts. It is intended for the CV-SAW submerged arc welding process. Hot Start – Not used for this welding process. Arc Control –...
  • Page 35 TABLE OF CONTENTS - ACCESSORIES SECTION Accessories ................C-1 Options And Accessories .
  • Page 36 ACCESSORIES TIG Options OPTIONS / ACCESSORIES Pro-Torch™ TIG Torches – PTA- General Options 9, PTA-17, PTA-26 – 2 piece power cord. K2149-1 Work Lead Package. Foot Amptrol® Provides 25 ft. (7.6 m) of remote current control for TIG welding. K1842-10 10ft. Weld Power Cable (Lug to Lug). (6-pin plug connection).
  • Page 37 TABLE OF CONTENTS - MAINTENANCE SECTION Maintenance ................D-1 Safety Precautions .

  • Page 38: Visual Inspection

    MAINTENANCE 2. Examine the sheet metal case for dents or break- SAFETY PRECAUTIONS age. Repair the case as required. Keep the case in good condition to insure that high voltage parts are WARNING protected and correct spacings are maintained. All external sheet metal screws must be in place to ELECTRIC SHOCK can kill.
  • Page 39 MAINTENANCE FIGURE D.1 – MAJOR COMPONENT LOCATIONS 1. Case Front Assembly 2. Divider Panel Assembly 3. Base Assembly 4. Case Back Assembly 5. Covers Assembly FLEXTEC™ 650...
  • Page 40 NOTES FLEXTEC™ 650...
  • Page 41 TABLE OF CONTENTS-THEORY OF OPERATION SECTION Theory of Operation ..............E-1 General Description .

  • Page 42: Theory Of Operation

    THEORY OF OPERATION FIGURE E.2 - GENERAL DESCRIPTION 115 VAC FAN ENABLE TO FAN MAIN TRANSFORMER OUTPUT RECTIFIER INPUT RECTIFIER SWITCH PC BOARD OUTPUT CHOKE LINE SWITCH TERMINAL 50 VDC RECONNECT SHUNT TERMINAL DISPLAY PC BOARD CONTROL TRANSFORMER 36VAC CURRENT & VOLTAGE FEEDBACK 60 VDC VRD™...

  • Page 43: Input Section

    THEORY OF OPERATION FIGURE E.3 - INPUT SECTION 115 VAC FAN ENABLE TO FAN MAIN TRANSFORMER OUTPUT RECTIFIER INPUT RECTIFIER SWITCH PC BOARD OUTPUT CHOKE LINE SWITCH TERMINAL 50 VDC RECONNECT SHUNT TERMINAL DISPLAY PC BOARD CONTROL TRANSFORMER 36VAC CURRENT & VOLTAGE FEEDBACK 60 VDC VRD™...

  • Page 44: Switch Board And Main Transformer

    THEORY OF OPERATION FIGURE E.4 - SWITCH BOARD AND MAIN TRANSFORMER 115 VAC FAN ENABLE TO FAN MAIN TRANSFORMER OUTPUT RECTIFIER INPUT RECTIFIER SWITCH PC BOARD OUTPUT CHOKE LINE SWITCH TERMINAL 50 VDC RECONNECT SHUNT TERMINAL DISPLAY PC BOARD CONTROL TRANSFORMER 36VAC CURRENT &...

  • Page 45: Output Section

    THEORY OF OPERATION FIGURE E.5 - OUTPUT SECTION 115 VAC FAN ENABLE TO FAN MAIN TRANSFORMER OUTPUT RECTIFIER INPUT RECTIFIER SWITCH PC BOARD OUTPUT CHOKE LINE SWITCH TERMINAL 50 VDC RECONNECT SHUNT TERMINAL DISPLAY PC BOARD CONTROL TRANSFORMER 36VAC CURRENT & VOLTAGE FEEDBACK 60 VDC VRD™...
  • Page 46 THEORY OF OPERATION FIGURE E.6 - CONTROL BOARD, USER INTERFACE CONTROLS, DISPLAY BOARD AND VRD™ 115 VAC FAN ENABLE TO FAN MAIN TRANSFORMER OUTPUT RECTIFIER INPUT RECTIFIER SWITCH PC BOARD OUTPUT CHOKE LINE SWITCH TERMINAL 50 VDC RECONNECT SHUNT TERMINAL DISPLAY PC BOARD CONTROL TRANSFORMER...

  • Page 47: Thermal Protection

    THEORY OF OPERATION THERMAL PROTECTION PROTECTIVE CIRCUITS Protective circuits are designed into the FLEXTEC™ Three normally closed (NC) thermostats protect the 650 to sense trouble and shut down the machine FLEXTEC™ 650. before damage occurs to the machine's internal com- Two thermostats provide secondary thermal protec- ponents.

  • Page 48: Pulse Width Modulation

    THEORY OF OPERATION FIGURE E.7 - TYPICAL IGBT OUTPUTS 1 μsec 1 μsec 48 μsec 50 μsec MINIMUM OUTPUT 24 μsec 2 μsec 24 μsec 50 μsec MAXIMUM OUTPUT PULSE WIDTH MODULATION MAXIMUM OUTPUT By holding the gate signal on for 24 microseconds The term Pulse Width Modulation is used to describe each and allowing only two microseconds of dwell time how much time is devoted to conduction in the positive...

  • Page 49: Insulated Gate Bipolar Tran- Sistor (Igbt) Operation

    THEORY OF OPERATION FIGURE E.8 - IGBT POSITIVE VOLTAGE APPLIED GATE GATE SOURCE SOURCE BODY REGION BODY REGION DRAIN DRIFT REGION DRAIN DRIFT REGION BUFFER LAYER BUFFER LAYER INJECTING LAYER INJECTING LAYER DRAIN DRAIN A. PASSIVE B. ACTIVE INSULATED GATE BIPOLAR TRAN- SISTOR (IGBT) OPERATION An IGBT is a type of transistor.
  • Page 50 NOTES E-10 E-10 FLEXTEC™ 650...
  • Page 51 TABLE OF CONTENTS - TROUBLESHOOTING AND REPAIR Troubleshooting and Repair ............. .F-1 How to Use Troubleshooting Guide .

  • Page 52: How To Use Troubleshooting Guide

    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.

  • Page 53: Pc Board Troubleshooting Procedures

    Do not touch electrically hot parts. - If you return a PC board to The Lincoln Electric Company for credit, it must be in the static-shielding bag. This will prevent further damage and allow prop- CAUTION er failure analysis.

  • Page 54: Using The Status Led To Troubleshoot System Problems

    TROUBLESHOOTING AND REPAIR Observe all Safety Guidelines detailed throughout this manual USING THE STATUS LED TO TROUBLESHOOT SYSTEM PROBLEMS Errors are displayed on the user interface. In addition, there are status lights on the control pc board and the switch pc board that contain error sequences.

  • Page 55: Vrd™ Operation

    TROUBLESHOOTING AND REPAIR Observe all Safety Guidelines detailed throughout this manual Error Code# Description Possible Solution Switch Board Undervoltage Lock 1. Damaged auxiliary transformer or intermittent “A” lead Out - connection. Verify 42 VAC output at 14 pin connector to determine the source of the problem. Switch board auxiliary supply voltage momentarily drops below 20 VDC.
  • Page 56 See the Wiring Diagram. CAUTION If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact the Lincoln Electric Service Department for technical troubleshooting assistance before you proceed. Call 1-888-935-3877. FLEXTEC™ 650...
  • Page 57 T1 Transformer. overheating. CAUTION If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact the Lincoln Electric Service Department for technical troubleshooting assistance before you proceed. Call 1-888-935-3877. FLEXTEC™ 650...
  • Page 58 CAUTION If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact the Lincoln Electric Service Department for technical troubleshooting assistance before you proceed. Call 1-888-935-3877. FLEXTEC™ 650...

  • Page 59: Input Panel Terminal Block Test

    INPUT PANEL TERMINAL BLOCK TEST WARNING Service and repair should be performed only 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.
  • Page 60 TROUBLESHOOTING AND REPAIR F-10 F-10 INPUT PANEL TERMINAL BLOCK TEST (continued) FIGURE F.1 – INPUT POWER TERMINAL BLOCK LOCATION INPUT POWER TERMINAL BLOCK PROCEDURE 4. Locate the Input Power Terminal Block. See WARNING Figure F.1. 5. Insure the lead “A” in the reconnect terminal is ELECTRIC SHOCK can kill.

  • Page 61: Dc Link Capacitor Discharge Procedure

    DC LINK CAPACITOR DISCHARGE PROCEDURE WARNING Service and repair should be performed only 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.
  • Page 62 TROUBLESHOOTING AND REPAIR F-12 F-12 DC LINK CAPACITOR DISCHARGE PROCEDURE (continued) FIGURE F.2 – SWITCH BOARD LEADS 207 & 209 B207 B209 PROCEDURE 3. Locate the two large bolted connections labeled WARNING “207” and “209” on the top edge of the FLEX- TEC™...

  • Page 63: Input Rectifier Test

    INPUT RECTIFIER TEST WARNING Service and repair should be performed only 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.
  • Page 64 TROUBLESHOOTING AND REPAIR F-14 F-14 INPUT RECTIFIER TEST (continued) FIGURE F.3 – INPUT RECTIFIER LOCATION INPUT RECTIFIER PROCEDURE 4. Locate the input rectifier assembly. See Figure WARNING F.3. 5. Perform the tests detailed in Table F.1. Also ELECTRIC SHOCK can kill. See Figure F.4.
  • Page 65 TROUBLESHOOTING AND REPAIR F-15 F-15 INPUT RECTIFIER TEST (continued) TABLE F.1 – INPUT RECTIFIER TEST POINTS + PROBE (RED) - PROBE (BLACK) RESULT Terminal L3A Rectifier Terminal (C) Rectifier Terminal (D) - Lead 209 0.3V - 1.0V Terminal L2A Rectifier Terminal (B) Rectifier Terminal (D) - Lead 209 0.3V - 1.0V Terminal L1A Rectifier Terminal (A)
  • Page 66 NOTES F-16 F-16 FLEXTEC™ 650...

  • Page 67: Fan And F.a.n. Circuit Test

    FAN AND F.A.N. CIRCUIT TEST WARNING Service and repair should be performed only 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.
  • Page 68 TROUBLESHOOTING AND REPAIR F-18 F-18 FAN AND F.A.N. CIRCUIT TEST (continued) FIGURE F.5 – PLUG J26 LOCATION LED5 PLUG J26 LED2 LED3 CURRENT CALIBRATION POT (R207) VOLTAGE CALIBRATION POT (R249) LED4 LED1 PROCEDURE 4. Unplug J26 on the switch board and insert a WARNING jumper wire carefully into the wire end of the connector to short leads #32A and #32C togeth-...
  • Page 69 TROUBLESHOOTING AND REPAIR F-19 F-19 FAN AND F.A.N. CIRCUIT TEST (continued) FIGURE F.6 – THERMOSTAT #2 (OUTPUT RECTIFIER HEATSINK) OUTPUT RECTIFIER HEATSINK THERMOSTAT #2 8. If the above test results in a running fan, 12. A properly operating F.A.N. circuit will start the remove the jumper wire between leads 32A and fan as soon as an arc is detected and for five 32C and plug J26 back into the switch board.
  • Page 70 NOTES F-20 F-20 FLEXTEC™ 650...

  • Page 71: T1 Transformer Test

    T1 TRANSFORMER TEST WARNING Service and repair should be performed only 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.
  • Page 72 TROUBLESHOOTING AND REPAIR F-22 F-22 T1 TRANSFORMER TEST (continued) FIGURE F.7 – T1 TRANSFORMER LOCATIONS T1 TRANSFORMER PROCEDURE 5. Carefully apply the correct three-phase input WARNING power to the FLEXTEC™ 650. 6. At the Reconnect Terminal Block carefully ELECTRIC SHOCK can kill. check for the correct primary voltages on the T1 Transformer.
  • Page 73 TROUBLESHOOTING AND REPAIR F-23 F-23 T1 TRANSFORMER TEST (continued) FIGURE F.8 – RECONNECT TERMINAL BLOCK LOCATION RECONNECT TERMINAL BLOCK TABLE F.2 – TRANSFORMER T1 TEST POINTS DESCRIPTION TEST POINTS EXPECTED READINGS CONDITIONS / COMMENTS Primary Voltage H1 to H2 380VAC Correct Input Power Applied Primary Voltage H1 to H3...
  • Page 74 NOTES F-24 F-24 FLEXTEC™ 650...

  • Page 75: Thermostat Test - T1 Transformer

    THERMOSTAT TEST - T1 TRANSFORMER WARNING Service and repair should be performed only 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.
  • Page 76 TROUBLESHOOTING AND REPAIR F-26 F-26 THERMOSTAT TEST - T1 TRANSFORMER (continued) FIGURE F.9 – PLUG J20 LOCATION PIN 6 LED5 LED2 PIN 12 SWITCH BOARD LED3 CURRENT CALIBRATION POT (R207) VOLTAGE CALIBRATION POT (R249) LED4 LED1 PROCEDURE 4. Locate plug J20 on the switch board. WARNING Figure F.9.

  • Page 77: Switch Board Test

    SWITCH BOARD TEST WARNING Service and repair should be performed only 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.
  • Page 78 TROUBLESHOOTING AND REPAIR F-28 F-28 SWITCH BOARD TEST (continued) FIGURE F.10 – SWITCH BOARD LOCATION SWITCH BOARD PROCEDURE 4. Locate the switch board on the right side of the WARNING machine. See Figure F.10. 5. Carefully apply the correct input power to the ELECTRIC SHOCK can kill.
  • Page 79 TROUBLESHOOTING AND REPAIR F-29 F-29 SWITCH BOARD TEST (continued) FIGURE F.11 – SWITCH BOARD PRIMARY SIDE LED5 LED2 LED 2 LED3 LED 3 CURRENT CALIBRATION POT (R207) VOLTAGE CALIBRATION POT (R249) LED4 LED 4 LED1 LED 1 FLEXTEC™ 650...
  • Page 80 TROUBLESHOOTING AND REPAIR F-30 F-30 SWITCH BOARD TEST (continued) TABLE F.3 – SWITCH BOARD LEDS DESCRIPTION INDICATES LIGHT CONDITIONS LED 1 +5.0VDC Supply (Green) Power applied to FLEXTEC™ 650 LED 2 CAN Communications is Powered (Green) Power applied to FLEXTEC™ 650 LED 3 Status LED Indicator (Red or Green) Power applied to FLEXTEC™...
  • Page 81 TROUBLESHOOTING AND REPAIR F-31 F-31 SWITCH BOARD TEST (continued) TABLE F.4 – SWITCH BOARD RESISTANCE MEASUREMENTS DESCRIPTION METER TEST POINTS EXPECTED READINGS CONDITIONS AND POLARITY Checking for short circuit B209(+) to B201(-) Greater Than 100,000 Machine “OFF” no input on the “High Side” IGBTs Ohms power applied Checking for short circuit...
  • Page 82 NOTES F-32 F-32 FLEXTEC™ 650...

  • Page 83: Output Rectifier Test

    OUTPUT RECTIFIER TEST WARNING Service and repair should be performed only 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.
  • Page 84 TROUBLESHOOTING AND REPAIR F-34 F-34 OUTPUT RECTIFIER TEST (continued) FIGURE F.12 – OUTPUT RECTIFIER LOCATION OUTPUT RECTIFIER PROCEDURE 3. Perform the DC Link Capacitor Discharge WARNING Procedure. 4. Locate output rectifier. See Figure F.12. ELECTRIC SHOCK can kill. 5. Disconnect the transformer leads (X1 and X2) •...
  • Page 85 TROUBLESHOOTING AND REPAIR F-35 F-35 OUTPUT RECTIFIER TEST (continued) FIGURE F.13 – OUTPUT RECTIFIER CONNECTIONS OUTPUT RECTIFIER HEATSINK BOLTED CONNECTION (LEAD TO CHOKE) BOLTED CONNECTION (X1) THERMOSTAT #2 BOLTED CONNECTION (X2) SPIKE BLOCKERS 6. Measure the rectifiers per chart below with your meter set for diode checking.
  • Page 86 NOTES F-36 F-36 FLEXTEC™ 650...

  • Page 87: Choke Test

    CHOKE TEST WARNING Service and repair should be performed only 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.
  • Page 88 TROUBLESHOOTING AND REPAIR F-38 F-38 CHOKE TEST (continued) FIGURE F.14 – CHOKE LOCATION CHOKE ASSEMBLY PROCEDURE 4. Locate choke assembly. See Figure F.14. WARNING 5. OPEN: No weld output. Check the resistance from the choke lead connected to heat sink of ELECTRIC SHOCK can kill.
  • Page 89 TROUBLESHOOTING AND REPAIR F-39 F-39 CHOKE TEST (continued) FIGURE F.15 – CHOKE CHOKE ASSEMBLY CHASSIS GROUND 7. Choke Coil Grounded: Reduced inductance. Alternate weld current path. Electrically isolate the choke coil by disconnecting both choke leads. (one at the output rectifier and one at the positive output terminal).
  • Page 90 NOTES F-40 F-40 FLEXTEC™ 650...

  • Page 91: Control Board Test

    CONTROL BOARD TEST WARNING Service and repair should be performed only 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.
  • Page 92 TROUBLESHOOTING AND REPAIR F-42 F-42 CONTROL BOARD TEST (continued) FIGURE F.16 – CONTROL P.C. BOARD CONTROL BOARD PROCEDURE 4. Locate the control P.C. board. See Figure F.16. WARNING 5. Apply the correct three phase input voltage to the machine and carefully check the control ELECTRIC SHOCK can kill.

  • Page 93: Error Logs

    TROUBLESHOOTING AND REPAIR F-43 F-43 CONTROL BOARD TEST (continued) FIGURE F.17 – CONTROL P.C. BOARD LEAD LOCATIONS PIN 6 PIN 1 PIN 6 PIN 1 PIN 16 PIN 1 PIN 8 PIN 4 PIN 12 LED1 PIN 8 PIN 1 PIN 1 PIN 10 PIN 1...
  • Page 94 TROUBLESHOOTING AND REPAIR F-44 F-44 CONTROL BOARD TEST (continued) TABLE F.6 – CONTROL BOARD VOLTAGE TESTS DESCRIPTION TEST POINTS EXPECTED CONDITIONS / COMMENT READINGS Input Power from D2 J8 Pin 5 (#84)+ 50 VDC Correct three-phase input power Rectifier applied to machine J8 Pin 2 (#85)- 15 VDC to Thermostat Circuit J8 Pin 1 (#225)+...
  • Page 95 TROUBLESHOOTING AND REPAIR F-45 F-45 CONTROL BOARD TEST (continued) TABLE F.7 – CONTROL PC BOARD FUNCTIONS & ERROR CODES G6617 CONTROL P.C. BOARD LED# COLOR FUNCTION GREEN Status “OK” Status “ERROR” (Check code for specific error) ERROR CODE # INDICATION 31 Primary Overcurrent Error Excessive primary current present.
  • Page 96 NOTES F-46 F-46 FLEXTEC™ 650...

  • Page 97: Display Board Test

    DISPLAY BOARD TEST WARNING Service and repair should be performed only 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.
  • Page 98 TROUBLESHOOTING AND REPAIR F-48 F-48 DISPLAY BOARD TEST (continued) FIGURE F.18 – DISPLAY BOARD LOCATION DISPLAY BOARD CASE FRONT ASSEMBLY PROCEDURE 4. Locate the display board. See Figure F.18. WARNING 5. Apply the correct three-phase input power and carefully check for 15VDC at J10 pin 7 (Lead ELECTRIC SHOCK can kill.
  • Page 99 TROUBLESHOOTING AND REPAIR F-49 F-49 DISPLAY BOARD TEST (continued) FIGURE F.19 – DISPLAY BOARD PIN 7 J 10 PIN 8 L ED 1 8. If the 15VDC is present at the control board but not at the display board check the continuity of leads #359 and #379.
  • Page 100 NOTES F-50 F-50 FLEXTEC™ 650...

  • Page 101: Thermostat Test - Thermal Protection

    THERMOSTAT TEST - THERMAL PROTECTION WARNING Service and repair should be performed only 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.
  • Page 102 TROUBLESHOOTING AND REPAIR F-52 F-52 THERMOSTAT TEST - THERMAL PROTECTION (continued) FIGURE F.20 – PLUG J8 LOCATION PIN 4 INPUT POWER THERMOSTAT PIN 1 LED1 PROCEDURE 4. Locate plug J8 on the control board. WARNING Figure F.20. 5. Remove the plug from the control board and ELECTRIC SHOCK can kill.
  • Page 103 TROUBLESHOOTING AND REPAIR F-53 F-53 THERMOSTAT TEST - THERMAL PROTECTION (continued) FIGURE F.21 – THERMOSTAT #2 OUTPUT RECTIFIER HEATSINK BOLTED CONNECTION (LEAD TO CHOKE) BOLTED CONNECTION (X1) THERMOSTAT #2 BOLTED CONNECTION (X2) SPIKE BLOCKERS THERMOSTAT #1 FLEXTEC™ 650...
  • Page 104 NOTES F-54 F-54 FLEXTEC™ 650...

  • Page 105: Case Cover Removal And Replacement Procedure

    CASE COVER REMOVAL AND REPLACEMENT PROCEDURE WARNING Service and repair should be performed only 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.

  • Page 106: Removal Procedure

    TROUBLESHOOTING AND REPAIR F-56 F-56 CASE COVER REMOVAL AND REPLACEMENT PROCEDURE (continued) FIGURE F.22 – CASE COVER SCREW LOCATIONS ROOF MOUNTING SCREWS (6) SIDE MOUNTING SCREWS (10) REMOVAL PROCEDURE 4. Using a 3/8” wrench, remove six mounting WARNING screws securing the roof and remove roof. See Figure F.22.

  • Page 107: Replacement Procedure

    TROUBLESHOOTING AND REPAIR F-57 F-57 CASE COVER REMOVAL AND REPLACEMENT PROCEDURE (continued) REPLACEMENT PROCEDURE 1. Using a 3/8” wrench, replace previously removed side mounting screws securing the case sides and the mounting screws securing rubber corners (5 screws total). See Figure F.22.
  • Page 108 NOTES F-58 F-58 FLEXTEC™ 650...
  • Page 109 REMOVAL AND REPLACEMENT PROCEDURE WARNING Service and repair should be performed only 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.

  • Page 110: Control Board

    TROUBLESHOOTING AND REPAIR F-60 F-60 CONTROL BOARD REMOVAL AND REPLACEMENT PROCEDURE (continued) FIGURE F.23 – CONTROL BOARD LOCATION CONTROL BOARD REMOVAL PROCEDURE 4. Locate the control board. See Figure F.23. WARNING 5. Label and disconnect the eight molex type plugs (J1, J4, J5, J3, J10, J2, J6 and J8) from ELECTRIC SHOCK can kill.

  • Page 111: Control Board Removal And Replacement Procedure

    TROUBLESHOOTING AND REPAIR F-61 F-61 CONTROL BOARD REMOVAL AND REPLACEMENT PROCEDURE (continued) FIGURE F.24 – CONTROL BOARD PLUG LOCATION LED1 REPLACEMENT PROCEDURE 1. Using a 5/16” nutdriver, secure the two previ- ously removed screws, mounting the new con- trol board to the baffle assembly. 2.
  • Page 112 NOTES F-62 F-62 FLEXTEC™ 650...
  • Page 113 REMOVAL AND REPLACEMENT PROCEDURE WARNING Service and repair should be performed only 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.

  • Page 114: Display Board

    TROUBLESHOOTING AND REPAIR F-64 F-64 DISPLAY BOARD REMOVAL AND REPLACEMENT PROCEDURE (continued) FIGURE F.25 – DISPLAY BOARD LOCATION DISPLAY BOARD CASE FRONT ASSEMBLY REMOVAL PROCEDURE 3. Perform the DC Link Capacitor Discharge WARNING Procedure. 4. Locate the display board. See Figure F.25. ELECTRIC SHOCK can kill.
  • Page 115 TROUBLESHOOTING AND REPAIR F-65 F-65 DISPLAY BOARD REMOVAL AND REPLACEMENT PROCEDURE (continued) FIGURE F.26 – DISPLAY BOARD PIN 7 J 10 PIN 8 L ED 1 REPLACEMENT PROCEDURE 1. Carefully connect J10 plug into the new display board. 2. Align the display board with the three mounting pins and slide the display board into place.
  • Page 116 NOTES F-66 F-66 FLEXTEC™ 650...

  • Page 117: Switch Board Removal And Replacement Procedure

    REMOVAL AND REPLACEMENT PROCEDURE WARNING Service and repair should be performed only 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.
  • Page 118 TROUBLESHOOTING AND REPAIR F-68 F-68 SWITCH BOARD REMOVAL AND REPLACEMENT PROCEDURE (continued) FIGURE F.27 – SWITCH BOARD LOCATION SWITCH BOARD REMOVAL PROCEDURE 1. Remove the input power to the FLEXTEC™ WARNING 650 machine. 2. Perform Case Cover Removal Procedure. ELECTRIC SHOCK can kill. 3.
  • Page 119 TROUBLESHOOTING AND REPAIR F-69 F-69 SWITCH BOARD REMOVAL AND REPLACEMENT PROCEDURE (continued) FIGURE F.28 – SWITCH BOARD PLUG AND LEAD LOCATIONS LED5 LED2 LED3 CURRENT CALIBRATION POT (R207) VOLTAGE CALIBRATION POT (R249) LED4 LED1 5. Label and disconnect the four plugs (J20, J21, 8.
  • Page 120 TROUBLESHOOTING AND REPAIR F-70 F-70 SWITCH BOARD REMOVAL AND REPLACEMENT PROCEDURE (continued) FIGURE F.29 – TORX MOUNTING SCREW LOCATIONS TORX MOUNTING SCREWS LED5 LED2 LED3 TORX CURRENT MOUNTING CALIBRATION POT (R207) SCREWS VOLTAGE CALIBRATION POT (R249) LED4 LED1 FIGURE F.30 – MODULE BAR GREASE REMOVAL AND APPLICATION POINTS COPPER BARS FLEXTEC™...
  • Page 121 TROUBLESHOOTING AND REPAIR F-71 F-71 SWITCH BOARD REMOVAL AND REPLACEMENT PROCEDURE (continued) REPLACEMENT PROCEDURE 1. Lay the FLEXTEC™ 650 on its side so that the 5. Hand tighten the 12 mounting screws. Then, heatsink is in a horizontal position. This simpli- torque each screw to 40-48 in-lbs.
  • Page 122 NOTES F-72 F-72 FLEXTEC™ 650...

  • Page 123: Output Rectifier Removal And Replacement Procedure

    REMOVAL AND REPLACEMENT PROCEDURE WARNING Service and repair should be performed only 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.
  • Page 124 TROUBLESHOOTING AND REPAIR F-74 F-74 OUTPUT RECTIFIER REMOVAL AND REPLACEMENT PROCEDURE (continued) FIGURE F.31 – OUTPUT RECTIFIER LOCATION OUTPUT RECTIFIER REMOVAL PROCEDURE 4. Locate the output rectifier assembly. Figure F.31. WARNING 5. Using the 1/2” wrench, remove the bolt, lock washer and flat washers securing the choke ELECTRIC SHOCK can kill.
  • Page 125 TROUBLESHOOTING AND REPAIR F-75 F-75 OUTPUT RECTIFIER REMOVAL AND REPLACEMENT PROCEDURE (continued) FIGURE F.32 – OUTPUT RECTIFIER BOLT LOCATIONS OUTPUT RECTIFIER HEATSINK BOLTED CONNECTION (LEAD TO CHOKE) BOLTED CONNECTION (X1) THERMOSTAT #2 BOLTED CONNECTION (X2) SPIKE BLOCKERS THERMOSTAT #1 FIGURE F.33 – OUTPUT RECTIFIER PLASTIC MOUNTING BRACKETS PLASTIC MOUNTING OUTPUT HEATSINK BRACKETS...
  • Page 126 TROUBLESHOOTING AND REPAIR F-76 F-76 OUTPUT RECTIFIER REMOVAL AND REPLACEMENT PROCEDURE (continued) REPLACEMENT PROCEDURE 1. Carefully position the new output rectifier assembly into place. 2. Using the two bolts and washers previously removed, connect the bottom two plastic mounting brackets onto the machine base. 3.

  • Page 127: Retest After Repair

    TROUBLESHOOTING AND REPAIR F-77 F-77 RETEST AFTER REPAIR RETEST A MACHINE: If it is rejected under test for any reason that requires you to remove any part which could affect the machineʼs electrical characteristics. If you repair or replace any electrical components. INPUT IDLE AMPS AND WATTS INPUT VOLTS MAXIMUM IDLE AMPS...

  • Page 128: Test After Repair

    TROUBLESHOOTING AND REPAIR F-78 F-78 TEST AFTER REPAIR FLEXTEC™ 650– CONSTANT CURRENT GRID LOAD TESTING Dip Switch #4 in the ON position; All other Dip Switch positions OFF. Switches and potentiometers: Weld Terminals On/Remote Switch – REMOTE Position Process Selection Switch – GTAW Position Local / Remote Switch –...
  • Page 129 TABLE OF CONTENTS - DIAGRAM SECTION Electrical Diagrams ..............G-1 Wiring Diagram (G7148) .
  • Page 130 ElECTriCal DiaGramS WiriNG DiaGram - COmplETE maChiNE - (CODE 11814) (G7148) FLEXTEC 650 WIRING DIAGRAM TO EARTH LEFT SIDE OF MACHINE GENERAL INFORMATION GROUND BASE CAVITY NUMBERING SEQUENCE PER THE ELECTRICAL SYMBOLS PER E1537. (VIEWED FROM COMPONENT SIDE OF P.C. BOARD)
  • Page 131 PROPRIETARY & CONFIDENTIAL: TO OTHER PARTIES OR USED FOR ANY PURPOSE WITHOUT THE EXPRESS WRITTEN PERMISSION OF LINCOLN GLOBAL, INC. SCALE: DESIGN INFORMATION EQUIPMENT TYPE: FLEXTEC 650 THE INFORMATION ON THIS PAGE ___ OF ___ NONE PRINT IS FOR REFERENCE...
  • Page 132 ALL SWITCHES ARE OFF BY FACTORY DEFAULT Use the “OUTPUT CONTROL KNOB” to adjust the setpoint to a desired value on the right display Use the “WELD TERMINALS” switch to USING THE FLEXTEC 650 CONTROL BOARD STATUS LED enable and disable output LIGHT MEANING...
  • Page 133 ElECTriCal DiaGramS SChEmaTiC - CONTrOl pC BOarD (G4767-2F3) pG 1 NOTE: This diagram is for reference only. It may not be accurate for all machines covered by this manual. FlEXTEC™ 650...
  • Page 134 ElECTriCal DiaGramS SChEmaTiC - CONTrOl pC BOarD (G4767-2F3) pG 2 NOTE: This diagram is for reference only. It may not be accurate for all machines covered by this manual. FlEXTEC™ 650...
  • Page 135 ElECTriCal DiaGramS SChEmaTiC - CONTrOl pC BOarD (G4767-2F3) pG 3 NOTE: This diagram is for reference only. It may not be accurate for all machines covered by this manual. FlEXTEC™ 650...
  • Page 136 ElECTriCal DiaGramS SChEmaTiC - CONTrOl pC BOarD (G4767-2F3) pG 4 NOTE: This diagram is for reference only. It may not be accurate for all machines covered by this manual. FlEXTEC™ 650...
  • Page 137 ElECTriCal DiaGramS SChEmaTiC - CONTrOl pC BOarD (G4767-2F3) pG 5 NOTE: This diagram is for reference only. It may not be accurate for all machines covered by this manual. FlEXTEC™ 650...
  • Page 138 G-10 G-10 ElECTriCal DiaGramS SChEmaTiC - CONTrOl pC BOarD (G4767-2F3) pG 6 NOTE: This diagram is for reference only. It may not be accurate for all machines covered by this manual. FlEXTEC™ 650...
  • Page 139 G-11 G-11 ElECTriCal DiaGramS SChEmaTiC - CONTrOl pC BOarD (G4767-2F3) pG 7 NOTE: This diagram is for reference only. It may not be accurate for all machines covered by this manual. FlEXTEC™ 650...
  • Page 140 G-12 G-12 ElECTriCal DiaGramS SChEmaTiC - SWiTCh pC BOarD (G6988-1E3) pG 1 NOTE: This diagram is for reference only. It may not be accurate for all machines covered by this manual. FlEXTEC™ 650...
  • Page 141 G-13 G-13 ElECTriCal DiaGramS SChEmaTiC - SWiTCh pC BOarD (G6988-1E3) pG 2 NOTE: This diagram is for reference only. It may not be accurate for all machines covered by this manual. FlEXTEC™ 650...
  • Page 142 G-14 G-14 ElECTriCal DiaGramS SChEmaTiC - SWiTCh pC BOarD (G6988-1E3) pG 3 NOTE: This diagram is for reference only. It may not be accurate for all machines covered by this manual. FlEXTEC™ 650...
  • Page 143 G-15 G-15 ElECTriCal DiaGramS SChEmaTiC - SWiTCh pC BOarD (G6988-1E3) pG 4 NOTE: This diagram is for reference only. It may not be accurate for all machines covered by this manual. FlEXTEC™ 650...
  • Page 144 G-16 G-16 ElECTriCal DiaGramS SChEmaTiC - SWiTCh pC BOarD (G6988-1E3) pG 5 NOTE: This diagram is for reference only. It may not be accurate for all machines covered by this manual. FlEXTEC™ 650...
  • Page 145 G-17 G-17 ElECTriCal DiaGramS SChEmaTiC - SWiTCh pC BOarD (G6988-1E3) pG 6 NOTE: This diagram is for reference only. It may not be accurate for all machines covered by this manual. FlEXTEC™ 650...
  • Page 146 G-18 G-18 ElECTriCal DiaGramS SChEmaTiC - SWiTCh pC BOarD (G6988-1E3) pG 7 NOTE: This diagram is for reference only. It may not be accurate for all machines covered by this manual. FlEXTEC™ 650...

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