Honeywell MK XXII, MK VIII manual Current Faults Internal, Current Faults External

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EGPWS LINE MAINTENANCE MANUAL

3.4.1 CURRENT FAULTS - INTERNAL

An internal fault indicates a problem with the EGPWC. The following table lists the internal fault messages and the probable maintenance response.

Note: “NO FAULTS” is enunciated for Level 2 Self-Test if no faults are present.

Enunciation:

Probable Cause:

Action:

TABLE 3-2: LEVEL 2 SELF-TEST - INTERNAL FAULTS

ROM FAILED

RAM FAILED NVM RAM FAILED NVM FAILED

WATCHDOG TIMER TEST FAILED EXCESSIVE WATCHDOG TIMEOUTS FAILURE ANALOG CONVERTER FAILED*

VOICE GENERATOR FAILED ARINC 429 TRANSMITTER FAILED ARINC 429 RECEIVER FAILED

FLASH FILE SYSTEM WRITE FAILED (fixed by MK VI, VIII, XXII Hardware Mod 2) APPLICATION DATABASE FAILED (DSP or CRC)

TERRAIN DATABASE FAILED (CRC or Runway or Mag. Var.)***

TERRAIN DATABASE NOT COMPATIBLE ENVELOPE MODULATION DATABASE FAILED CONFIGURATION DATABASE FAILED (MK V/VII) APPLICATION DATABASE FAILED (MK VI/VIII/XXII ) CONFIGURATION DATABASE AAC DATA FAULT SYSTEM OR MODE TASK FAILED

SUPPORT TASK FAILED

INTERNAL GPS FAILED**

APPLICATION SOFTWARE VERSION INVALID RCD FAILED (MK V/VII)

EGPWC failure

Remove and replace the EGPWC.

Notes: If external faults also exist, these should be eliminated, and the internal faults rechecked before the EGPWC is removed and replaced.

*Power unit on bench with parity pin strapped, and verify the failure is cleared.

**If the EGPWC incorporates the integral Mercury GNSSU (-060 hardware part numbers), both internal and external faults will be indicated. This fault can also be indicated if there is no antenna connection to the GNSSU. Before replacing the EGPWC/GNSSU, ensure that the antenna is connected and that no antenna wiring breaks exist.

***Invalid Latitude/Longitude causes a Mag Var table fault which may be annunciated as “Terrain Database Failed” This can be caused by not connecting the GPS antenna.

3.4.2 CURRENT FAULTS - EXTERNAL

An external fault indicates a problem with an external sensor, system, or wiring. External faults are further broken down in to sub-categories; Discrete Faults, ARINC 429 Bus Activity Faults, Analog Input Wire Monitoring Faults, ARINC 429 Signal Faults, Analog Signal Faults, and Program Pin or Configuration Module Faults. The following table provides a few examples of these.

CAGE CODE: 97896

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

REV: G

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Contents Egpws Line Maintenance Manual Drawn Approved RevisionsDescription DateEFF PT 14A Disp USE Table of Contents Maintenance Practices 10.1 Introduction Scope ApplicabilityMK 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 4A/4B/4C Unsafe Terrain Clearance Operation Mode 1 Excessive Descent RateMode 2A/2B Terrain Closure Rate Mode 3 Descent After TakeoffMode 5 Descent below Glideslope Mode 6 Advisory Callouts OptionalCallout Description Smart Five Hundred Envelope Modulation not Available in MK VI/VIII Mode 7 Windshear Detection Optional for MK V/VII onlyExcessive Bank Angle Callout Tail Strike CalloutRunway Database Terrain Alerting and Display OptionalTerrain and Obstacle Database Peaks Display Mode Optional Geometric Altitude GPS RequiredWeather Radar Autotilt MK V and MK VII only System Display and Annunciation Stabilized Approach Monitor Option for MK V and MK VII onlyAltimeter 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 Maintenance Maintenance Philosophy System Operation During AN Inop ConditionBIT Description Front Panel SELF-TEST Interface MK V and MK VII only Front Panel Test ConnectorEgpwc Front Panel Egpws Status LED’SSELF-TEST Functions Fault Isolation Troubleshooting General Troubleshooting GuideExternal Computer Fault Fail Corrective Action SELF-TEST Preamble Level 1 SELF-TEST GO/NO GO TestSELF-TEST Inhibited Short Level 1 SELF-TESTGpws INHIBITED, Terrain Inhibited Gpws InhibitedLong Level 1 SELF-TEST Level 2 SELF-TEST Current FaultsCurrent Faults External Current Faults InternalFault Example Reason Gear Switch Fault Bussignal FaultBUS Wiring Fault Flap Switch FaultAudio Menu Invalid Program PIN Read ErrorSystem or Mode Tasked Failed Callouts Option InvalidSheet 31 Terrain Awareness no Valid Longitude Terrain AWARENESS-POSITION ErrorTerrain Clearance Floor Position Error Terrain Awareness no Valid LatitudeFollowing 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 5 SELF-TEST Alert History Level 6 SELF-TEST Discrete Input TestFollowing Information is Given in the Level 5 SELF-TEST Arinc 552 / ALT 55 Radio Altitude Validity Flag Discretes GND Landing Gear Discrete3 +28V Landing Gear Discrete 5 +28V Landing Flap or Flap Override Discrete GND Landing Flap Discrete or Flap OverrideSteep Approach Discrete #1 MK V and MK VII only Flap Position DiscretesSELF-TEST Discrete Steep Approach DiscretesGlideslope Validity Discretes Steep Approach Discrete #2GND ILS Tuned Discrete 10 +28V ILS Tuned DiscreteDecision Height Discrete GND Glideslope Cancel DiscreteGND Glideslope Inhibit Discrete 13 +28 V Glideslope Inhibit Discrete19 +28 V Audio SUPPRESSINHIBIT/ALL Modes Inhibit Discrete Mode 6 Volume Control DiscreteCallouts Enable Discrete MK V and MK VII only GND Audio SUPPRESSINHIBIT/ALL Modes Inhibit DiscreteSimulator Reposition MK V and MK VII only AOA Validity Discretes MK V and MK VII onlyDisplay Select Discretes Terrain Awareness & TCF InhibitAirspeed Validity Discrete Weather Radar ON/OFFLocalizer Validity Discretes MK V and MK VII only Attitude Validity DiscretesNormal Acceleration Validity Discrete Barometric Altitude Rate Validity DiscretesAcceleration SELF-TEST in Progress Discrete Longitudinal Acceleration Validity DiscreteAutopilot Disconnect Discretes PLI Deselect Switch Discretes MK V and MK VII onlyMagnetic Heading Validity Discrete AOA Vane Heater DiscreteMomentary Flap Override Discrete Tactical Select DiscreteAltitude Alert Discrete Corrected Barometric Altitude Validity DiscreteRaas Inhibit Discrete MK V and MK VII only Weight on Wheels DiscreteRaas Enable Discrete MK V and MK VII only Gpws Inhibit DiscreteLOW Airspeed Monitor Inhibit Discrete MK V 737NG only Loading a Database Maintenance Practices GeneralDatabase Update Database Update FrequencyDownload Procedure Flight History DownloadingObtaining 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 Servicing General REMOVAL/INSTALLATION 6.1 Egpwc RemovalInstallation Configuration Module MK VI, MK VIII, and MK Xxii onlyDisplay Switching Relays if Installed ADJUSTMENT/TEST AdjustmentEgpws Ground Tests CLEANING/PAINTING General INSPECTION/CHECK 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.
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