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ADVANCED ELECTRONIC INSTRUMENTATION
INSTALLATION NOTICE
The conditions and tests required for TSO approval of this article are
minimum performance standards. It is the responsibility of those
installing this article either on or within a specific type or class of aircraft
to determine that the aircraft installation conditions are within the TSO
standards. TSO articles must have separate approval for installation in
an aircraft. The article may be installed only if performed under 14CFR
part 43 or the applicable airworthiness requirements.
PURCHASER / USER AGREEMENT
The purchaser and/or user, by accepting this equipment, agrees to hold
VISION MICROSYSTEMS INCORPORATED, its owners, assigns,
heirs and employees, free and harmless from all loss, liability or
damage resulting from claims brought by any reason of alleged failure
or defect of any parts supplied by
VISION MICROSYSTEMS INCORPORATED.
VISION MICROSYSTEMS INCORPORATED has made every effort to
document this product accurately and completely. However, VISION
MICROSYSTEMS INCORPORATED assumes no liability for errors or
for damages that result from the use of this manual or the equipment it
accompanies. VISION MICROSYSTEMS INCORPORATED reserves
the right to make changes to this manual and the product at any time
without notice.
****** TO RECEIVE WARRANTEE COVERAGE *******
FILL OUT AND RETURN THE WARRANTEE AGREEMENT.
VISION MICROSYSTEMS INCORPORATED
4255 Mitchell Way
BELLINGHAM, WASHINGTON 98226
PHONE (360) 714-8203 FAX (360) 714-8253
www.visionmicrosystems.com

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  • Page 1 VISION MICROSYSTEMS INCORPORATED. VISION MICROSYSTEMS INCORPORATED has made every effort to document this product accurately and completely. However, VISION MICROSYSTEMS INCORPORATED assumes no liability for errors or for damages that result from the use of this manual or the equipment it accompanies.
  • Page 2 Vision Microsystems Incorporated or an authorized repair center. 2. In no event shall Vision Microsystems Incorporated be held liable for damages to property or personnel due to the use of this product.
  • Page 5: Table Of Contents

    O.A.T. TRANSDUCER INST..........12 1.15 C.A.T. TRANSDUCER INST..........12 1.16 IO INTERFACE BOARD INST..........13 1.17 FUEL LEVEL MOUNTING KIT INST........15 1.18 FUEL PROBE INST.............. 17 EPI800 Manual.doc EPI 800 MANUAL 2001 Vision Micr...
  • Page 6 FUEL LEVEL SYSTEM OPERATION ........37 2.18 FUEL LEVEL SYSTEM CALIBRATION ....... 37 INDICATOR CARE AND MAINTENANCE ......39 TRANSDUCER CARE AND MAINTENANCE ...... 40 DATA PROCESSOR CARE AND MAINTENANCE ..... 40 EPI800 Manual.doc EPI 800 MANUAL 2001 Vision Micros...
  • Page 7 CUSTOMER SERVICE ............41 INSTALLATION REFERENCE ..........43 REFERENCE INFORMATION: FIGURE 1: EPI 800 IND. & SWITCH MOUNTING ....... 44 FIGURE 2: C.A.T. PROBE MOUNTING ..........45 FIGURE 3: DPU MOUNTING..............46 FIGURE 4: FUEL PROBE INST. DRAWING ........47 FIGURE 5: DPU P1 Cable Preparation ..........
  • Page 9: Dpu, Switch, Display Cable Installation

     DO NOT: connect ‘Volt Sense Wire’ to a point, which does not have breaker, or fuse protection.  DO NOT: allow static electricity to contact any terminal. Always discharge yourself to ground first ! EPI800 Manual.doc EPI 800 MANUAL 2001 Vision M...
  • Page 10: Indicator Mounting And Connection

    Be careful not to cross thread the screws or the indicator bezel will be permanently damaged. The cut-out and mounting space requirement information is provided in 'FIGURE 1: EPI 800 IND. & SWITCH MOUNTING'. If you are uncomfortable with laying out the hole patterns, check with the factory for availability of indicator cutout templates.
  • Page 11: Mode Switch Installation

    Cylinder Analyzer options (a mode switch will be temporarily needed for calibration of the Fuel Level System option). Refer to ‘FIGURE 1: EPI 800 IND. & SWITCH MOUNTING’. STEP 1. Once the switch hole has been located and drilled, remove the paper backing and vinyl front covering from the switch plate.
  • Page 12: Rpm Transducer Installation

    Note that we cannot guarantee compatibility with electronic ignition systems as they are designed and revised without our control. EPI800 Manual.doc EPI 800 MANUAL 2001 Vision Micr...
  • Page 13: Manifold Pres. Transducer Inst

     DO NOT: mount the transducer in the engine compartment.  DO NOT: mount the transducer lower than the engine manifold access port, or accumulated fuel/oil in the hose will not run back into the engine and may cause sluggish performance. EPI800 Manual.doc EPI 800 MANUAL 2001 Vision M...
  • Page 14: Oil Temperature Transducer Inst

    Cover during any washdown operation.  DO NOT: solder onto terminal lugs of the transducer.  DO NOT: dent or deform the transducer in any way or improper operation will result EPI800 Manual.doc EPI 800 MANUAL 2001 Vision Micr...
  • Page 15: Fuel Flow Transducer Inst

     After installation, we recommend wrapping the transducer with a blanket of heat barrier material such as 'FIRE SLEEVE'. Make sure the material is properly secured using standard aircraft practices and procedures. EPI800 Manual.doc EPI 800 MANUAL 2001 Vision M...
  • Page 16: Fuel Pres. Transducer Inst

    Cover during any washdown operation.  DO NOT: solder onto terminal lugs of the transducer.  DO NOT: dent or deform the transducer in any way or improper operation will result EPI800 Manual.doc EPI 800 MANUAL 2001 Vision Micr...
  • Page 17: Cylinder Head Temp Probe Inst

    ‘APPENDIX C: DPU P2 Connector Harness Fabrication’. IMPORTANT NOTES:  Probe shorter lead is RED, and the longer is WHITE.  Extension wire may be cut to desired length. EPI800 Manual.doc EPI 800 MANUAL 2001 Vision M...
  • Page 18: Exhaust Gas Temp Probe Inst

    ‘APPENDIX C: DPU P2 Connector Harness Fabrication’. IMPORTANT NOTES:  Probe shorter lead is YELLOW, and the longer is RED.  Extension wire may be cut to desired length. EPI800 Manual.doc EPI 800 MANUAL 2001 Vision Micr...
  • Page 19: Voltage Sense Wire Inst

    Connector Harness Fabrication’ using the supplied terminals. IMPORTANT NOTES:  DO NOT: Mount transducer in the engine compartment without protection from heat and/or fluids.  DO NOT: solder onto terminal lugs of the transducer. EPI800 Manual.doc EPI 800 MANUAL 2001 Vision M...
  • Page 20: Transducer Inst

    Connect to the DPU harness as shown in ‘APPENDIX B: DPU P1 Connector Harness Fabrication’. You may either connect using the supplied terminals or with an equivalent or better method. EPI800 Manual.doc EPI 800 MANUAL 2001 Vision Micr...
  • Page 21: Io Interface Board Inst

    See ‘APPENDIX E: IO Interface Board J2 Wiring’ for all IO Interface Board connection information. Use standard techniques for wiring to the D-Style connector. Select the best backshell grommet that provides a snug fit around the finished wire harness. EPI800 Manual.doc EPI 800 MANUAL 2001 Vision M...
  • Page 23: Fuel Level Mounting Kit Inst

    The probe may enter a fuel tank from the bottom up, or vice versa, as long as the probe sees at least a 85% coverage change from full to empty. EPI800 Manual.doc EPI 800 MANUAL 2001 Vision M...
  • Page 24 Lay up two layers over the bushing while the potting mixture is still soft to hold the bushing in place. Use the bonding techniques recommended in your aircraft construction manual. EPI800 Manual.doc EPI 800 MANUAL 2001 Vision Micr...
  • Page 25: Fuel Probe Inst

    Allow the sealant time to set, if necessary, according to the sealant manufacturers' instructions before adding fuel to the tanks. Once the fuel level system has been installed it needs to be calibrated. See 2.18 FUEL LEVEL SYSTEM CALIBRATION. EPI800 Manual.doc EPI 800 MANUAL 2001 Vision M...
  • Page 26: Initial System Set-Up

    SECTION 2: OPERATION INITIAL SYSTEM SET-UP Some of the EPI 800 features need to be customized for your aircraft before operating. Some procedures are defined here, while others are defined in their respective 'operation sections'. Follow the steps below to properly set up your system: STEP 1.
  • Page 27: Tachometer Operation

    Another feature is the 'engine hours counter'. When the engine is off, the digital display reads the total accumulated engine hours to a maximum of '5999.9'. Engine hours are accumulated any time RPM is greater than 1500. EPI800 Manual.doc EPI 800 MANUAL 2001 Vision M...
  • Page 28: Manifold Pressure Operation

    For new induction system designs, or modifications to existing designs, this repeatability is extremely valuable to judge the performance of the design or design changes. EPI800 Manual.doc EPI 800 MANUAL 2001 Vision Micr...
  • Page 29: Oil System Operation

    Oil Pressure Alert: A warning alert activates whenever the engines redline is reached. The display will flash until this condition is corrected. EPI800 Manual.doc EPI 800 MANUAL 2001 Vision M...
  • Page 30 Your oil temp system also provides you with built-in warning annunciators. If the oil temperature rises above redline, the system captures the event and the display is flashed until the problem is corrected. EPI800 Manual.doc EPI 800 MANUAL 2001 Vision Micr...
  • Page 31: Fuel Computer System Operation

    Fuel Total Alert: Your fuel computer has a built-in 'Low Fuel Total' warning annunciator. When the computed fuel total is less than a factory programmed amount (10 gallons standard), the display will flash. EPI800 Manual.doc EPI 800 MANUAL 2001 Vision M...
  • Page 32: Initial Set Up Of The Fuel Computer

    The display will show 'rdy'. Wait for this message to disappear. STEP 8. Move the switch to 'TOT' position and shut off power. This completes the setting of the 'FULL TANK SIZE'. EPI800 Manual.doc EPI 800 MANUAL 2001 Vision Micr...
  • Page 33: Adding Fuel To The Fuel Computer

    NOTE: To top off the computers tank, just leave the mode switch in 'ADD' until the display stops counting up which signifies the full tank size has been reached, then proceed from STEP 2. EPI800 Manual.doc EPI 800 MANUAL 2001 Vision M...
  • Page 34: Fuel Computer Normal Operation Modes

    The graphic display is shut off as it has no relationship to this parameter. EPI800 Manual.doc EPI 800 MANUAL 2001 Vision Micr...
  • Page 35: Cylinder Analyzer System Operation

    10 degree resolution. The cylinder selector switch is used to select the operating mode. 'One switch' operation means mode selection is straightforward and easy. Just rotate the positive action switch to the desired mode. EPI800 Manual.doc EPI 800 MANUAL 2001 Vision M...
  • Page 36: Leaning Your Engine

    NOTE: Peak mode only operates if ALL installed EGT/CHT probes are functioning. A 'Er' message is displayed if there are probe problems. Use the cylinder mode switch to identify the faulty probes. EPI800 Manual.doc EPI 800 MANUAL 2001 Vision Micr...
  • Page 37: Electrical Monitoring System Operation

    Amps Alert: Your system has a built-in warning that flashes the display when the alternator does not produce power for the electrical system. EPI800 Manual.doc EPI 800 MANUAL 2001 Vision M...
  • Page 38: Air Temperature System Operation

    99 C and a minimum of -50 C. This is very useful for monitoring small changes in temperatures and for calculating temperature related parameters. For new engine installations, you can take advantage of the high accuracy and repeatability for analyzing carburetor heat effectiveness. EPI800 Manual.doc EPI 800 MANUAL 2001 Vision Micr...
  • Page 39: Chronometer System Operation

    -- to name just a few. The following page contains easy steps for initial setup and operation of your chronometer. EPI800 Manual.doc EPI 800 MANUAL 2001 Vision M...
  • Page 40: Initial Chronometer Set Up

    'straight up' position as before. The display will read 'Utcrdy'. Wait for this message to disappear, then move the selector to any desired position. (You can now check 'UTC' for the correct universal time.) EPI800 Manual.doc EPI 800 MANUAL 2001 Vision Micr...
  • Page 41 (You can now check 'LOC' for the correct local time). NOTE: Since universal and local minutes and seconds are the same, you can only set local hours. EPI800 Manual.doc EPI 800 MANUAL 2001 Vision M...
  • Page 42: Chronometer Modes

    'powered-up'. This is useful for your log book entries and in-flight time keeping. Be sure to note the 'FLT' time before shutting off the master as it is cleared at next 'power-up'. EPI800 Manual.doc EPI 800 MANUAL 2001 Vision Micr...
  • Page 43 Move the selector switch to the 'STOP' position to clear the countdown timer mode. NOTE: You can clear the countdown timer mode any time it is running by moving the switch to the 'stop' position. EPI800 Manual.doc EPI 800 MANUAL 2001 Vision M...
  • Page 44: Io Interface Board Operation

    AMPS - amperage discharge has been detected PEAK EGT - peak egt has been reached in 'peak mode' CHT - cylinder head(s) are too hot or shocked cooled TIMER - count down time has expired EPI800 Manual.doc EPI 800 MANUAL 2001 Vision Micr...
  • Page 45: Fuel Level System Operation

     You can do all tanks simultaneously by adding fuel increments to each of them and following the step by step instructions. EPI800 Manual.doc EPI 800 MANUAL 2001 Vision M...
  • Page 46 STEP 2. Repeat until all tanks have been filled and recorded. STEP 4. MAIL or FAX copies of the calibration sheets to us for programming. BE SURE to fill in requested information on the chart. EPI800 Manual.doc EPI 800 MANUAL 2001 Vision Micr...
  • Page 47: Indicator Care And Maintenance

    Use care when connecting and/or removing the rear mounted connectors as the ejector arms can be broken if improperly handled. EPI800 Manual.doc EPI 800 MANUAL 2001 Vision M...
  • Page 48: Transducer Care And Maintenance

    'Initial System Set-up' is required. See this section for details. The total tach hours can also be re-loaded. Contact the factory for details. The pack can be field installed by a qualified technician. Contact the factory for details. EPI800 Manual.doc EPI 800 MANUAL 2001 Vision Micr...
  • Page 49: Customer Service

    8. Have you carefully checked for loose or broken wires? 9. Have you referred to ‘APPENDIX J: Troubleshooting Guide’. VISION MICROSYSTEMS INCORPORATED 4255 Mitchell Way BELLINGHAM, WASHINGTON 98226 PH:(360) 714-8203 FX:(360) 714-8203 EPI800 Manual.doc EPI 800 MANUAL 2001 Vision M...
  • Page 51: Installation Reference

    INSTALLATION REFERENCE The following pages contain general figures, tables and appendices referencing ways to install, mount, attach and wire the various items. Refer to the applicable manual sections to properly use this information. EPI800 Manual.doc EPI 800 MANUAL 2001 Vision M...
  • Page 52: Reference Information: Figure 1: Epi 800 Ind. & Switch Mounting

    SECTION 4: INSTALLATION REFERENCE 44 FIGURE 1: EPI 800 IND. & SWITCH MOUNTING EPI800 Manual.doc EPI 800 MANUAL 2001 Vision Micr...
  • Page 53 SECTION 4: INSTALLATION REFERENCE 45 FIGURE 2: C.A.T. PROBE MOUNTING EPI800 Manual.doc EPI 800 MANUAL 2001 Vision M...
  • Page 54 SECTION 4: INSTALLATION REFERENCE 46 FIGURE 3: DPU MOUNTING EPI800 Manual.doc EPI 800 MANUAL 2001 Vision Micr...
  • Page 55 FIGURE 4: FUEL PROBE INST. DRAWING Expanded views are shown for the fuel level mounting hardware as installed in a typical composite wing tank. See section on Fuel Level System Component Installation. EPI800 Manual.doc EPI 800 MANUAL 2001 Vision M...
  • Page 56 Foil & plastic Shield removed. Jacket removed. Heat shrink applied. Shield wire junction soldered to cable. Shield wires soldered. Pins crimped to wires. (See APPENDIX G for Dsub pin crimp tool.) EPI800 Manual.doc EPI 800 MANUAL 2001 Vision Micr...
  • Page 57 SECTION 4: INSTALLATION REFERENCE 49 DPU P1 Cable Preparation (cont.) Pins inserted through grommet and into connector. Harness inserted into half of backshell with grommet in proper position. Completed harness assembly. EPI800 Manual.doc EPI 800 MANUAL 2001 Vision M...
  • Page 58 SECTION 4: INSTALLATION REFERENCE 50 FIGURE 6: RPM Transducer Placement EPI800 Manual.doc EPI 800 MANUAL 2001 Vision Micr...
  • Page 59 SECTION 4: INSTALLATION REFERENCE 51 FIGURE 7: Fuel Flow Transducer Orientation PN: 3010019 Transducer Orientation (arrow must point up after installation) PN: 3010032, 3010035 Transducer Orientation (wires must point up after installation) EPI800 Manual.doc EPI 800 MANUAL 2001 Vision M...
  • Page 60 SECTION 4: INSTALLATION REFERENCE 52 FIGURE 8: Amps Transducer Orientation Pass monitored wire through AMPS transducer as shown with current flow in proper direction. Alternator Output Aircraft Bus EPI800 Manual.doc EPI 800 MANUAL 2001 Vision Micr...
  • Page 61: Appendix A: Transducer Connector Wiring Techniques

    See APPENDIX G for Lug Terminal crimp tool. FULLY insert wire so it goes slightly beyond metal barrel (look inside to insure this relationship). Insure wires are secure after crimping by pulling on them EPI800 Manual.doc EPI 800 MANUAL 2001 Vision M...
  • Page 62 ‘Rubber Gasket’ is around it, holding the cable securely after the ‘Compression Nut’ is tightened down. Assembly screw Connector Shell Rubber Gasket Washer Compression Nut Connector Plug Pinout (top) Connector Gasket Connector Plug (Side) EPI800 Manual.doc EPI 800 MANUAL 2001 Vision Micr...
  • Page 63: Appendix B: Dpu P1 Connector Harness Fabrication

    Step 3. Solder each junction to the shield of each cable. You should now have only one jumper end not connected. Step 4. Install and shrink 1" of heat shrink tubing over each ‘shield to jumper’ connection. EPI800 Manual.doc EPI 800 MANUAL 2001 Vision M...
  • Page 64 Select the type of connector that mates with the respective transducer and install it according to the guidelines in ‘APPENDIX A: Transducer Connector Wiring Techniques’. EPI800 Manual.doc EPI 800 MANUAL 2001 Vision Micr...
  • Page 65 Fuel Pr Con. Pin 2 Fuel Pres. RED: Fuel Pres. Cable Fuel Pr Con. Pin 4 GRN: Fuel Pres. Cable Fuel Pr Con. Pin 3 WHT: Fuel Pres. Cable Fuel Pr Con. Pin 1 EPI800 Manual.doc EPI 800 MANUAL 2001 Vision M...
  • Page 66: Appendix C: Dpu P2 Connector Harness Fabrication

    NOTE: You may need to install and route the harness in the aircraft before doing this next procedure. Install the connectors according to the guidelines contained in ‘APPENDIX A: Transducer Connector Wiring Techniques’. EPI800 Manual.doc EPI 800 MANUAL 2001 Vision Micr...
  • Page 67 RED: EGT 6 NOTES: 1. Any position not used should be jumpered. For example, if CHT 5 were not installed, then a jumper wire must be installed between pins 9 and 10. EPI800 Manual.doc EPI 800 MANUAL 2001 Vision M...
  • Page 68: Appendix D: Display Cable Fabrication

    These notches should ONLY be wide enough to clear the sides of the connector. Do the same thing with the large flap. This forms a slot in which the connector can protrude after the shield is closed. EPI800 Manual.doc EPI 800 MANUAL 2001 Vision Micr...
  • Page 69 If this appears likely, then the shielding should be moved or trimmed back from the connector and secured to the flat cable with electrical tape or electrical RTV at the problem locations. EPI800 Manual.doc EPI 800 MANUAL 2001 Vision M...
  • Page 70 SECTION 4: INSTALLATION REFERENCE 62 FIGURE 9: Display Cable Shield Installation Example of shield material trimmed away from the center shield wire. Cable placed on shielding with both flaps notched for connector clearance. EPI800 Manual.doc EPI 800 MANUAL 2001 Vision Micr...
  • Page 71 Display Cable Shield Installation (cont.) Shielding folded and bonded together with required clearance from connector. Display Cable connected to DPU. Note ring terminal crimped to shield wire, then placed under mounting bolt to ground the shield. EPI800 Manual.doc EPI 800 MANUAL 2001 Vision M...
  • Page 72: Appendix E: Io Interface Board J2 Wiring

    RED: Right Fuel Probe RED: Right Fuel Probe BLK: Center Fuel Probe BLK: Center Fuel Probe CENTER FUEL WHT: Center Fuel Probe WHT: Center Fuel Probe LEVEL RED: Center Fuel Probe RED: Center Fuel Probe EPI800 Manual.doc EPI 800 MANUAL 2001 Vision Micr...
  • Page 73: Appendix F: System Block Diagram

    SECTION 4: INSTALLATION REFERENCE 65 APPENDIX F: System Block Diagram EPI800 Manual.doc EPI 800 MANUAL 2001 Vision M...
  • Page 74: Appendix G: Recommended Tools

    SECTION 4: INSTALLATION REFERENCE 66 APPENDIX G: Recommended Tools The following list recommends tools needed for various operations. These tools may be available from Vision Microsystems Inc. Contact the factory for availability. Tool Purpose Manufacturers P/N VMS P/N Dsub Pin Crimper...
  • Page 75: Appendix H: Fuel Level System Calibration Chart

    ZIP: IMPORTANT: Fill in the ‘ALARM LABEL’ field for desired ‘low fuel tank alarm’ activation with (L=left, C=center, R=right). TANK ALARM LEFT TANK CENTER RIGHT TANK QUANTITY LABEL VALUE TANK VALUE VALUE EPI800 Manual.doc EPI 800 MANUAL 2001 Vision M...
  • Page 76 SECTION 4: INSTALLATION REFERENCE 68 EPI800 Manual.doc EPI 800 MANUAL 2001 Vision Micr...
  • Page 77 ALARM LEFT TANK CENTER RIGHT TANK QUANTITY LABEL VALUE TANK VALUE VALUE Fax or mail to: VISION MICROSYSTEMS INC. 4255 Mitchell Way BELLINGHAM , WA 98226 PH: (360) 714-8203 FX: (360) 714-8253 EPI800 Manual.doc EPI 800 MANUAL 2001 Vision M...
  • Page 78: Appendix I: Specifications & Operating Conditions

    WEIGHT VOLTS AMPSMAX. OPER. TEMP DESCRIPTION (in.) (oz.) (ma.) ( Deg. C) EPI 800 Indicator (internal 2.5w x 2.8h x 1.0d -50 to +70 (all 2 ¼ instruments) power) 12v sys: 11 to15 Data Processing Unit 6.4L x 5.0w x 2.7h...
  • Page 79: Appendix J: Troubleshooting Guide

    The troubleshooting guides presented here are intended for use by a qualified technician. Certain test equipment will be required, such as a precision digital voltmeter capable of measuring ohms, 100 microvolts DC, and an RMS AC voltage superimposed on a DC voltage. EPI800 Manual.doc EPI 800 MANUAL 2001 Vision M...
  • Page 80 -0.003 to +0.003 3010016,17,18 Pin 3 (grn) Pin 1 (wht) 0.031 to +0.034 3010016 Pin 3 (grn) Pin 1 (wht) 0.028 to +0.032 3010017 Pin 3 (grn) Pin 1 (wht) 0.028 to +0.032 3010018 EPI800 Manual.doc EPI 800 MANUAL 2001 Vision Micr...
  • Page 81 4. Perform the following tests, with EPI800 power ON. Meter Meter Desired Unit under test Common Plus Value 4.95 to 5.05 vdc 3010019,32,35 0.4 to 1.1 vdc 3010019,32,35 >10 > 1.0 vac 3010019,32,35 EPI800 Manual.doc EPI 800 MANUAL 2001 Vision M...
  • Page 82 For the next tests, have engine running at idle. USE CAUTION AROUND ENGINE! > 600 2.2 to 2.7 vdc 3010004,5 > 600 2.5 to 3.3 vac 3010004,5 MANIFOLD PRESSURE TROUBLE SHOOTING GUIDE EPI800 Manual.doc EPI 800 MANUAL 2001 Vision Micr...
  • Page 83 Ambient Desired Unit Common Plus in hg. Value (VDC) under test 29.92 4.95 to 5.05 3010015 29.92 2.49 to 2.50 3010015 29.92 2.43 to 2.47 3010015 29.92 0.034 to 0.038 vdc 3010015 EPI800 Manual.doc EPI 800 MANUAL 2001 Vision M...
  • Page 84 If the problem is constant, you have the best chance of identifying the errant probe(s), otherwise it may take some trial and error troubleshooting. EPI800 Manual.doc EPI 800 MANUAL 2001 Vision Micr...
  • Page 85 Also check that the correct pin locations were used (with regard to the suspect probe) in P2 when the harness was built. EPI800 Manual.doc EPI 800 MANUAL 2001 Vision M...
  • Page 86 ‘–50 C’, means the probe is not delivering a signal to the DPU. The most common cause is an open connection, or a short in the cable causing the signal to be grounded. EPI800 Manual.doc EPI 800 MANUAL 2001 Vision Micr...
  • Page 87 AMPS transducer. Each amp of alternator output will result in an increase of 0.036 vdc on the BLK to WHT measurement. > 10 amps  0.036 vdc / AMP 3010022 EPI800 Manual.doc EPI 800 MANUAL 2001 Vision M...
  • Page 88 1.7 to 4.0 vac 3010009/10/12/13 Shut off power and disconnect probe from harness (or harness from IO interface). 8900 to 9200  3010009/10/12/13 14200 to 14700  3010009/10/12/13 5300 to 5500  3010009/10/12/13 EPI800 Manual.doc EPI 800 MANUAL 2001 Vision Micr...
  • Page 89 Re-apply dimmer power and listen again for the whining tone. If it is not present, then the problem is in the DPU. 4. Shut off dimmer power and unplug all indicators from the display cable. Reconnect display cable to the DPU. EPI800 Manual.doc EPI 800 MANUAL 2001 Vision M...
  • Page 90 Be sure to turn on full dimmer power after plugging into each position. If certain positions test bad, then a new cable will have to be fabricated. If certain indicators test bad, contact us for assistance. EPI800 Manual.doc EPI 800 MANUAL 2001 Vision Micr...
  • Page 91 IMPORTANT: If the suspect component is determined to be serviceable, then the customer will not receive any credit for it. The serviceable component will be returned to the customer at their expense. EPI800 Manual.doc EPI 800 MANUAL 2001 Vision M...

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