Honeywell MK VIII, MK XXII manual Appendix B Troubleshooting DO’S and do NOT’S

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EGPWS LINE MAINTENANCE MANUAL

12 APPENDIX B: TROUBLESHOOTING DO’S AND DO NOT’S

DO use built-in self test levels to find the exact nature of the fault.

DO use our free WinVIEWS program to quickly access Self Test Level 1, 2, and 3 info

DO remember to look at the front panel LEDs

Green Computer OK LED means “don’t remove”

Amber External Fault LED means “don’t remove”

Red Computer means “possibly remove”

DO NOT use cockpit INOP lamps for troubleshooting

INOP indications are merely a pilot’s indication of which EGPWS functions are inactive, they are not positive indication of internal EGPWS faults. Experience shows External (non-EGPWS) faults are responsible for INOPs illumination 99% of the time.

DO NOT remove unit if front panel green Computer OK LED is illuminated

CAGE CODE: 97896

SCALE: NONE SIZE: A DWG NO.: 060-4199-180

REV: G

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Contents Egpws Line Maintenance Manual Drawn Description RevisionsDate ApprovedEFF PT 14A Disp USE Table of Contents Maintenance Practices 10.1 Applicability Introduction ScopeMK V Egpwc Part Numbers MK VII Egpwc Part Numbers MK VI, MK VIII, MK Reference DocumentsEnhanced Ground Proximity Warning System Description and Operation General System DescriptionMode 2A/2B Terrain Closure Rate Operation Mode 1 Excessive Descent RateMode 3 Descent After Takeoff Mode 4A/4B/4C Unsafe Terrain ClearanceMode 6 Advisory Callouts Optional Mode 5 Descent below GlideslopeCallout Description Smart Five Hundred Excessive Bank Angle Callout Mode 7 Windshear Detection Optional for MK V/VII onlyTail Strike Callout Envelope Modulation not Available in MK VI/VIIITerrain Alerting and Display Optional Runway DatabaseTerrain and Obstacle Database Geometric Altitude GPS Required Peaks Display Mode OptionalWeather Radar Autotilt MK V and MK VII only Stabilized Approach Monitor Option for MK V and MK VII only System Display and AnnunciationAltimeter Monitor Option for MK V and MK VII only LOW Airspeed Monitor MK V Boeing 737NG only Long Landing Monitor Option for MK V and MK VII onlyLamp Format BelowSystem Operation During AN Inop Condition System Maintenance Maintenance PhilosophyBIT Description Egpwc Front Panel Front Panel Test ConnectorEgpws Status LED’S Front Panel SELF-TEST Interface MK V and MK VII onlySELF-TEST Functions Troubleshooting Guide Fault Isolation Troubleshooting GeneralExternal Computer Fault Fail Corrective Action SELF-TEST Preamble Level 1 SELF-TEST GO/NO GO TestGpws INHIBITED, Terrain Inhibited Short Level 1 SELF-TESTGpws Inhibited SELF-TEST InhibitedLong Level 1 SELF-TEST Level 2 SELF-TEST Current FaultsCurrent Faults External Current Faults InternalFault Example Reason BUS Wiring Fault Bussignal FaultFlap Switch Fault Gear Switch FaultSystem or Mode Tasked Failed Program PIN Read ErrorCallouts Option Invalid Audio Menu InvalidSheet 31 Terrain Clearance Floor Position Error Terrain AWARENESS-POSITION ErrorTerrain Awareness no Valid Latitude Terrain Awareness no Valid LongitudeFollowing Information is Given in the Level 3 SELF-TEST Level 3 SELF-TEST System ConfigurationIRS 1 Attitude Mode Selected Egpws Line Maintenance Manual Following Information is Given in the Level 4 SELF-TEST Level 4 SELF-TEST Fault HistoryLevel 6 SELF-TEST Discrete Input Test Level 5 SELF-TEST Alert HistoryFollowing Information is Given in the Level 5 SELF-TEST GND Landing Gear Discrete Arinc 552 / ALT 55 Radio Altitude Validity Flag Discretes3 +28V Landing Gear Discrete 5 +28V Landing Flap or Flap Override Discrete GND Landing Flap Discrete or Flap OverrideSELF-TEST Discrete Flap Position DiscretesSteep Approach Discretes Steep Approach Discrete #1 MK V and MK VII onlyGND ILS Tuned Discrete Steep Approach Discrete #210 +28V ILS Tuned Discrete Glideslope Validity DiscretesGND Glideslope Inhibit Discrete GND Glideslope Cancel Discrete13 +28 V Glideslope Inhibit Discrete Decision Height DiscreteCallouts Enable Discrete MK V and MK VII only Mode 6 Volume Control DiscreteGND Audio SUPPRESSINHIBIT/ALL Modes Inhibit Discrete 19 +28 V Audio SUPPRESSINHIBIT/ALL Modes Inhibit DiscreteDisplay Select Discretes AOA Validity Discretes MK V and MK VII onlyTerrain Awareness & TCF Inhibit Simulator Reposition MK V and MK VII onlyLocalizer Validity Discretes MK V and MK VII only Weather Radar ON/OFFAttitude Validity Discretes Airspeed Validity DiscreteAcceleration SELF-TEST in Progress Discrete Barometric Altitude Rate Validity DiscretesLongitudinal Acceleration Validity Discrete Normal Acceleration Validity DiscreteMagnetic Heading Validity Discrete PLI Deselect Switch Discretes MK V and MK VII onlyAOA Vane Heater Discrete Autopilot Disconnect DiscretesAltitude Alert Discrete Tactical Select DiscreteCorrected Barometric Altitude Validity Discrete Momentary Flap Override DiscreteRaas Enable Discrete MK V and MK VII only Weight on Wheels DiscreteGpws Inhibit Discrete Raas Inhibit Discrete MK V and MK VII onlyLOW Airspeed Monitor Inhibit Discrete MK V 737NG only Database Update Maintenance Practices GeneralDatabase Update Frequency Loading a DatabaseFlight History Downloading Download ProcedureObtaining AN Egpws Flight History Download Card Via email aerotechsupport@honeywell.com Transcription of the Pcmcia CardSheet 54 CFG CAT 7 92 T CUW command/data string Installation REMOVAL/INSTALLATION 6.1 Egpwc RemovalConfiguration Module MK VI, MK VIII, and MK Xxii only Servicing GeneralADJUSTMENT/TEST Adjustment Display Switching Relays if InstalledEgpws Ground Tests INSPECTION/CHECK General CLEANING/PAINTING GeneralRepairs General Appendix a Winviews Appendix B Troubleshooting DO’S and do NOT’S Maint Function Message Appendix C Raas Maintenance Messages Aural & DisplayedRAAS-NA-xxxx amber RAAS-RTO green RAAS-INOP amber Maint Function Displayed MessageSelf-Test Level 3 RCD Part Number Appendix D Stabilized Approach Monitor Maintenance MessagesAppendix E Altimeter Monitor Maintenance Messages Self-Test Level 1 Flaps Monitor Inop Appendix G Long Landing Monitor Maintenance Messages Self-Test Level 3 Airspeed Low Inhibited Annunciated at Appendix H LOW Airspeed Monitor Maintenance Messages

MK VIII, MK V, MK XXII, MK VII, MK VI specifications

Honeywell's range of control systems, particularly the MK VI, MK VIII, MK VII, V, and XXII, are pivotal innovations that have revolutionized process automation and control in various industries, especially in power generation and oil and gas sectors. Each of these systems comes with unique features and technologies to enhance operational efficiency, safety, and reliability.

The Honeywell MK VI control system is renowned for its ability to provide effective plant control and management tools, featuring advanced operator interfaces and robust hardware components. It employs a modular design, which allows for easy scalability and integration into existing infrastructure. The MK VI is equipped with Ethernet-based communication protocols, ensuring high-speed data transfer and enabling seamless connectivity with other systems.

The MK VIII system takes automation a step further, emphasizing enhanced performance and reliability. With its built-in redundancy and advanced diagnostics, the MK VIII minimizes downtime and optimizes maintenance efforts. Its powerful software tools are designed to improve operator decision-making, providing critical insights into plant operations and trends.

Honeywell’s MK VII control system is designed for high-performance applications, especially in gas turbine environments. It features advanced control algorithms, enabling precise control of emissions and improving overall efficiency. The MK VII stands out with its ability to maintain optimal performance under varying load conditions, ensuring reliability in challenging operational scenarios.

The MK V system is one of Honeywell's legacy products, known for its simple and user-friendly interface. Despite its age, it continues to be a dependable choice for many plants. It offers solid performance with basic control functions and has been a reliable backbone for older facilities transitioning into newer technologies.

Lastly, the MK XXII brings a modern twist to control systems with its focus on cybersecurity and data analytics. This system takes advantage of big data and IoT technologies, providing enhanced visibility of operations through real-time monitoring and predictive maintenance capabilities. The MK XXII ensures that plants not only operate efficiently but also mitigate risks associated with cyber threats.

Overall, Honeywell's series of control systems showcases their commitment to innovation and reliability in process automation, catering to the diverse needs of contemporary industrial environments. Each system is designed with specific features and capabilities that address the evolving challenges of process control, ensuring that users can achieve optimal performance and safety in their operations.