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Chapter 4

VXP System Maintenance Manual

4-1

4.

Maintenance

Routine functional tests will be done for all equipment, although only limited maintenance may be
performed in the field. The troubleshooting guide at the end of this chapter will enable you to
isolate component failures, but no major repairs will be performed on any equipment other than
the cables. All repairs of major components will be done by the manufacturer. Cables will be
tested and repaired in the field. Cable test and limited repair procedures are in Chapter 5.

4.1  TEST EQUIPMENT

Table 4-1 lists the test equipment, accessories, and cables needed to perform maintenance on the
VXP system.

4.2 ROUTINE MAINTENANCE PROCEDURES

Routine maintenance on the VXP consists mainly of inspecting the equipment for obvious
problems and performing functional tests on the equipment to verify correct operation. All repairs
other than minor maintenance procedures will be done by the manufacturer. If a component fails,
it must be returned to Chadwick-Helmuth for repair.

4.2.1 Inspections

The VXP should be inspected each time it is used. At the minimum, a thorough inspection of all of
the components should be performed every 12 months. Following are tables showing the routine
inspection procedures for each of the major components. The tables show the area to be inspected
and the procedure to follow if any defects are found.

Table 4-1. Test Equipment

Part No.

Nomenclature

Manufacturer

Characteristics

9100A

Power Supply

Chadwick-Helmuth

24 Vdc, 4 amperes

11A

Calibrator

Chadwick-Helmuth

3030

Magnetic Pickup

Chadwick-Helmuth

12700

FasTrak Test Cable

Chadwick-Helmuth

Summary of Contents for VXP

Page 1: ... 13 2005 VXP System Maintenance Manual Aerospace Electronic Systems Permission has been granted to permit the U S Government the right to reproduce update or change the contents of this commercial manual for Government use only ...

Page 2: ...ission nor is any information in this Manual to be disclosed in any form whatever including orally or by electronic transmission to anyone other than an authorized representative of the User s employer who also shall agree not to disclose same without express prior written consent of Honeywell Windows is a registered trademark of Microsoft Corporation Panasonic is a registered trademark of Matsush...

Page 3: ... the Strobex which may cause injury or death The flash tube is at several atmospheres pressure and may cause injury if broken Always wear safety shield or safety glasses when testing the Strobex Warning Do not look directly into the Strobex or into the FasTrak LEDs Permanent eye damage could occur ...

Page 4: ...iv Honeywell ...

Page 5: ...ter 2 Preparation for Use 2 1 2 1 UNPACKING 2 1 2 2 PREPARATION FOR USE 2 1 2 2 1 Cable Interconnections 2 1 2 2 2 Software Loading 2 2 2 2 2 1 DU Software Loading Procedure 2 2 2 2 2 2 AU Software Loading Procedure 2 2 2 2 3 Printer Preparation 2 4 2 2 3 1 Loading Paper 2 4 2 2 3 2 Printer DIP Switch Settings 2 4 2 3 VXP System Checkout 2 6 2 3 1 Preparation and Checkout Procedure 2 6 Chapter 3 S...

Page 6: ...3 7 FasTrak Test 4 11 4 3 7 1 Special Overlays 4 12 4 4 TROUBLESHOOTING GUIDE 4 13 4 4 1 General VXP System Problems 4 13 4 4 2 VXP Troubleshooting 4 14 4 4 2 1 Error Codes 4 15 4 4 2 2 Action Codes 4 20 4 4 3 Display Unit Maintenance 4 23 Chapter 5 Repair and Cleaning 5 1 5 1 BATTERY REPLACEMENT 5 1 5 2 CABLE TESTING AND REPAIR 5 2 5 2 1 Photocell 5 3 5 2 2 Magnetic Pickup 5 4 5 2 3 DC Power 5 5 ...

Page 7: ... Replacement View 5 1 5 2 Wiring Schematic for Photocell Cable P N 902 10185 5 3 5 3 Wiring Schematic Magnetic Pickup Cable P N 902 10808 5 4 5 4 Wiring Schematic for DC Power Cable P N 902 10813 5 5 5 5 Wiring Schematic for FasTrak Cable P N 902 13279 5 6 5 6 Wiring Schematic for Computer Connector Cable PN 15371 5 8 5 7 Wiring Schematic for Velocimeter Cable P N 902 11210 5 9 5 8 Wiring Schemati...

Page 8: ...viii Honeywell ...

Page 9: ...4 7 Cables 4 4 4 8 Functional Test Limits for Accelerometers and Velocimeters using Model 11A Calibrator 4 7 4 9 Common VXP System Problems 4 13 4 10 VXP Error and Action Codes 4 16 4 11 Action Codes 4 20 5 1 Battery Specifications 5 2 5 2 Acquisition Unit Photocell Connector Pinouts 5 3 5 3 Acquisition Unit Magnetic Pickup Connector Pinouts 5 4 5 4 Acquisition Unit DC Power Connector Pinouts 5 5 ...

Page 10: ...x Honeywell ...

Page 11: ...usually configured as a portable carry on system However a permanent configuration is available that can serve to monitor aircraft performance at preset intervals The main components of the VXP are the Acquisition Unit the Display Unit which is a small Pentium notebook computer the CompactFlash Card Adapter Zio USB CompactFlash Card Reader Writer USB Floppy Disk Drive and the printer Additional eq...

Page 12: ...VXP system main components are shown in Figures 1 1 1 2 1 3 and 1 4 The system accessories are shown in Figure 1 5 and the system interconnect cables in Figure 1 6 The system components are listed in Table 1 1 and the cables in Table 1 2 Figure 1 1 Acquisition Unit ...

Page 13: ...Introduction VXP System Maintenance Manual 1 3 Figure 1 2 Display Unit Figure 1 3 Thermal Printer Figure 1 4 USB Floppy Disk Drive ...

Page 14: ...1 4 Honeywell Introduction Figure 1 5 CompactFlash Card and Adapter Figure 1 6 Zio USB CompactFlash Card Reader Writer and USB Extension Cable ...

Page 15: ...Introduction VXP System Maintenance Manual 1 5 Figure 1 7 System Accessories ...

Page 16: ...1 6 Honeywell Introduction Figure 1 8 System Cables ...

Page 17: ...Flash Card 8M 16M A data storage card used for information and data transfer to and from VXP Toughbook laptop computer or desktop PC 1 610 614 Reader Writer ZIO USB Compact Flash Card For downloading data to VXP Toughbook laptop computer or desktop PC 1 610 615 USB Floppy disk Drive Floppy disk drive used to transfer upload application and configuration files to the system and to download files fo...

Page 18: ... in use 1 3300 10444 12803 4270A Reflective tape patches and target sets Used when operating the Strobex and FasTrak 1 Table 1 2 VXP System Cables Part No Nomenclature Purpose Quantity 10185 Cable Photocell Connects Photocell to AU AR 10808 Cable Magnetic Pickup Connects magnetic pickup to AU 1 10813 Cable Power Supply Connects the AU to the aircraft power supply 1 11210 Cable Velocimeter Connects...

Page 19: ...at can provide DC power to the printer and Display Unit It is housed in a rugged aluminum chassis and is environmentally sealed The front panel has discrete connectors for accelerometer and or velocimeter inputs azimuth inputs power FasTrak Strobex and communications interfaces and an expansion connector for additional vibration inputs and specialized interfaces The Acquisition Unit is shown in Fi...

Page 20: ...Phase Resolution 1 degree Frequency Range 180 to 60 000 rpm Harmonics 1 to 5 Simultaneous Channels 4 vibration 1 azimuth 1 FasTrak Vector Operations A B 2 A B 2 Spectrum Frequency Ranges 0 20 Hz to 0 75 KHz Frequency Resolution 400 to 51 200 lines Window Types Flat top Hanning Kaiser Bessel Uniform Simultaneous Channels 4 vibration 1 azimuth Dynamic Range 90 dB Averaging Linear Peak hold Amplitude...

Page 21: ...W x 49 H x 216 D mm Weight 3 8 lbs 1 7 kg 4 5 lbs 2 1 kg Input Power 15 Vdc 25 W nominal 16 Vdc 25 W nominal Power Source VXP AU via 902 15371 cable or accessory AC adapter provided VXP AU via 902 17317 cable or accessory AC adapter provided Operating Temperature Range 30 C to 60 C 5 C to 35 C Storage Temperature Range 55 C to 85 C 20 C to 60 C Processor Intel CeleronTM 300 MHz Intel Pentium R M 1...

Page 22: ...d configuration files to the system upload and data files from the system download for storage The adapter is for 8 or 16MB CompactFlash cards The CompactFlash Adapter connects to the VXP Display Unit through the PCMCIA interface Table 1 6 contains the leading particulars for the CompactFlash Card Adapter Table 1 5 Printer Leading Particulars Parameter Characteristic Type Dot matrix thermal printe...

Page 23: ...ash Card Reader Writer Interface PCMCIA Port Drive Transfer Rate High transfer rate System Requirements Windows 98 2000 or Millennium with 32MB of RAM and 1MB of free hard drive space Table 1 7 Zio USB CompactFlash Card Reader Writer Parameter Characteristic Dimensions 2 2 W x 0 5 H x 2 6 L inches 5 6 W x 1 27 H x 6 6 L cm Input Power Power Source USB Port USB Cable 36 inches Operating Temperature...

Page 24: ...splay Unit through a USB interface Table 1 6 contains the leading particulars for the USB Floppy Disk Drive Table 1 8 USB Floppy Disk Drive Leading Particulars Parameter Characteristic Dimensions 4 08 W x 0 93 H x 5 93 L inches 10 36 W x 2 36 H x 15 6 L cm 3 Weight 0 68 lb 0 31 Kg Input Power 1 Vdc 5V 5 Power Source USB Port USB Cable 11 8 inches Operating Temperature 5 to 40 C Storage Temperature...

Page 25: ...e The Strobex flash rate can also be controlled from within the VXP DP The Strobex has rounded corners and an attached cable assembly that plugs directly into the AU Leading particulars are shown in Table 1 8 Table 1 9 FasTrak Leading Particulars Particular Characteristic Weight 1 1 lb 0 50 kg Dimensions Height 5 1 in 129 5 mm Diameter 3 6 in 91 4 mm Environments Day and night Resolution 1 0 mm ty...

Page 26: ... Tube Energy Control Auto Range no operator adjustment Effective Strobe Range Bright Sun 60 ft 18 3 m Overcast 150 ft 45 7 m Night 500 ft 152 4 m Dimensions 6 0 H x 4 5 W x 5 0 L inches 152 4 H x 114 3 W x 127 0 L mm Weight 3 5 lb 1 59 kg Table 1 11 Photocell Leading Particulars Parameter Characteristic Supply Voltage 10 30 Vdc at less than 25mA exclusive of load 10 maximum ripple Response Time 30...

Page 27: ... STORAGE AND SHIPPING The VXP should always be stored in its protective case when not in use Please see Chapter 6 for detailed instructions on long term storage and information on shipping should that become necessary 1 5 WARRANTY The standard warranty for the VXP is one year parts and labor If your VXP needs warranty service please return it to Honeywell Aerospace Electronic Systems 4601 N Arden ...

Page 28: ...1 18 Honeywell Introduction ...

Page 29: ...his chapter 2 1 UNPACKING Follow these steps when unpacking the VXP 1 Open shipping container and remove carrying case and accessories 2 Open carrying case and remove major components cables and accessories 3 Check contents of shipping container and carrying case against enclosed Packing List 4 Carefully unwrap each major component cable and accessory 5 Check exterior surfaces of each item for scr...

Page 30: ... it becomes necessary to reload the Display Unit software or if it is necessary to load application software for a new aircraft 2 2 2 1 DU Software Loading Procedure The software that provides the user interface to the VXP Operational Program OP is executed on the DU and is called the Display Program DP It should not be necessary to load the DP because the DU is provided with the software installe...

Page 31: ...ation software 8M 16M CompactFlash card containing the desired AP into the CompactFlash Card Reader 4 Insert the 8M 16M CompactFlash Card and Reader into the PCMCIA slot on the DU 5 Start the DP by double clicking on or touching twice in rapid succession the VXP icon on the DU desktop The dialog box shown in Figure 2 1 will appear 6 Select Load Application from the start up menu Figure 2 1 and cli...

Page 32: ...rt the tip of the paper into the inlet at the bottom of the paper holder and press the feed button until the paper is fed through the paper cutter 5 Continue pressing the paper feed switch until the paper feeds straight and smoothly 6 Replace the paper cover and lock it in place by gently pressing down on it Refer to the printer manual for more information 2 2 3 2 Printer DIP Switch Settings The S...

Page 33: ...mns 40 ON Data Length 8 Bits ON Printing Speed High ON User Front Back up On ON Parity Setting No OFF Auto Loading Off ON Character Select Normal ON Parity Condition Odd ON Auto LF On ON Zero Normal ON Busy Control H W Busy OFF Setting Command Disable ON International OFF Baud OFF Printing ON Character ON Rate ON Density ON Set ON Select ON 100 OFF USA ON 9600 bps ...

Page 34: ...U is on Printer Battery Condition Turn the printer on and verify that the power light is on The power light will blink once every second to indicate that the battery is being charged by the AU The Power light will blink once every second to indicate that the battery is low Printer Check the printer for general condition damage and that paper is installed correctly Check to see if the paper has bee...

Page 35: ...U are communicating properly the application program main menu will be displayed System BIT Check Print the fault log as follows 1 Press the Print icon on the left side of the display 2 Press the Fault Log button in the Print menu Verify that there are no faults in the log If a printer is not attached to the system the Fault Log may be viewed as follows 3 Click the View Log menu 4 Select System Fa...

Page 36: ...2 8 Honeywell Preparation for Use ...

Page 37: ...t can be found in the Operator s Manual and the On Line User Guide Those manuals include instructions for installing the VXP on a helicopter and operating it in flight This manual only provides instructions for completing functional tests of the VXP 3 1 SYSTEM DESCRIPTION The major components of the VXP system are described here A system block diagram is shown in Figure 3 1 Figure 3 1 VXP System B...

Page 38: ... is shown in Figure 1 2 3 1 3 Printer The printer for the VXP system is a portable thermal printer that connects directly to a dedicated serial port on the AU via the 902 15371 AU to DU cable The printer is powered by the AU but can also run on its internal Ni MH battery The printer can be used to print log files and balance solutions on the aircraft for easy reference Refer to section 1 2 3 for a...

Page 39: ... The beam illuminates reflective targets on the main rotor to indicate rotor track and on the tail rotor to measure clock angle The cable assembly to connect it directly to the AU is built into the unit The Strobex requires no operator adjustment The unit flashes in sync with a command from the AU from a single pulse to 250 pulses per second The trigger switch on the handle has two functions When ...

Page 40: ...on them 3 1 9 Velocimeter Velocimeters are essentially accelerometers with a built in amplifier and integrator circuit In this way an output voltage is produced which is proportional to velocity in inches per second ips Velocimeters require both positive and negative supply voltages and employ a four pin circular connector The VXP AU has 16 interfaces designed for velocimeters 3 1 10 Magnetic Pick...

Page 41: ...n 3 Pull down the Help menu in the main desktop 4 Select either the VXP System Help or the aircraft model application help for example Bell 407 Application Help Basic operation of the VXP system is described briefly below 3 2 1 VXP Manual Operation The AU and DU must be connected via the 902 15371 or 902 17317 AU to DU cable The system may then be operated manually as follows 1 Apply power to the ...

Page 42: ...n line manuals are written for specific aircraft and procedures can vary depending on the application and aircraft The on line manual can be accessed by choosing Help from the menu line at any time 3 2 2 Monitor Mode The VXP can be configured to continuously collect vibration data in flight by uploading a monitor route in a vmssetup cfg file to the AU If the VXP has been configured this way the vi...

Page 43: ...icon The Start Up dialog box will appear 3 Establish communication with the AU by clicking on the OK button or pressing the Enter key the Connect To AU option is selected by default 4 Enter the ID number of the aircraft or select the desired ID number from the drop down menu and click on OK or press the Enter key 5 The Select Procedure window of the AP will display 6 Click on the View Log button T...

Page 44: ...nch the VXP DP by double clicking on or touching twice in rapid succession the VXP icon The Start Up dialog box will appear 3 Establish communication with the AU by clicking on the OK button or pressing the Enter key the Connect To AU option is selected by default 4 Enter the ID number of the aircraft or select the desired ID number from the drop down menu and click on OK or press the Enter key 5 ...

Page 45: ...e on the VXP consists mainly of inspecting the equipment for obvious problems and performing functional tests on the equipment to verify correct operation All repairs other than minor maintenance procedures will be done by the manufacturer If a component fails it must be returned to Chadwick Helmuth for repair 4 2 1 Inspections The VXP should be inspected each time it is used At the minimum a thor...

Page 46: ...urn the unit to Chadwick Helmuth for repair Table 4 3 Display Unit Inspection Inspection Remedy Inspect housing for loose screws Tighten loose screws Inspect the connectors for heavy wear or corrosion Return the unit to Chadwick Helmuth for repair Table 4 4 Strobex Inspection Inspection Remedy Inspect plastic light shield for cracks scratches or discoloration Return to Chadwick Helmuth for repair ...

Page 47: ...the filter window with any standard glass cleaner and a soft clean lint free cloth Inspect the cable connector for bent or broken pins Replace the cable connector see Section 5 2 Cable Repair Inspect the Delrin mounting base for general condition and security Closely inspect the four mounting holes for deformations cracks or excessive wear Return to Chadwick Helmuth for repair Interior Shake the u...

Page 48: ...his allows the user to verify the proper operation of these components and aids in fault isolation 4 3 1 Test Setup Connect equipment as shown in Figure 4 1 Table 4 6 Photocell Inspection Inspection Remedy Inspect the cable connector for bent or broken pins Return to Chadwick Helmuth for repair Inspect the light aperture for dirt or obstructions Clean with water or alcohol and a soft lint free clo...

Page 49: ...ive check of the AU hardware and software and also tests many of the sensors connected to the AU BIT results are stored in the vxpfault log file and may be saved or viewed on the DU or printed on the serial printer The fault log may be viewed on the DU as follows 1 Drop down the View Logs menu 2 Select System Faults and click on the Download View button 3 In the Message from View Log window click ...

Page 50: ...k up or photocell for an azimuth reference 2 Ensure that one set of No 6 screws is installed in the single holes directly above and below the ch logo on the calibrator rotor disk See Figure 4 2 3 Set CAM RATE RPM switch to 900 4 Turn on calibrator and adjust pot next to 900 CAM RATE switch position until 2nd ring from outside on rotor disk appears frozen in place under 60 Hz light 1 5 Using the Di...

Page 51: ...rrect RPM is displayed in the upper left corner of the Bal Meas Only window 10 Verify that the correct magnitude and phase readings are displayed depending upon the type of sensor used Table 4 8 lists the correct readings for Chadwick Helmuth accelerometers and velocimeters 11 Repeat the preceding steps until all eight of the discrete Velocimeter Accelerometer inputs and all of the sensors and cab...

Page 52: ...y Unit and Display Program click on the Measurements Only button in the Select Procedure menu of the Application Program Refer to Section 3 2 1 for detailed instructions on manual operation 5 In the Measurements Only menu click on the SPECTRUM MEAS ONLY button 6 Click on the More button beneath the spectrum display window Note that the More button toggles between More and Less Figure 4 4 Spectrum ...

Page 53: ...ude units pull down window 12 Select RPM in the frequency units pull down window 13 Click on the OK button to exit the Spectrum Set up window 14 Select Auto Stop in the upper left corner of the Spectrum Meas Only window 15 Click on the Start button in the upper left corner of the Spectrum Meas Only window 16 Verify that a peak appears at 900 RPM in the spectrum and that the amplitude is within the...

Page 54: ...ck on the FLASH STROBE SYNCHRONIZED TO AZ button 6 Select AZIMUTH 1 in the AZ CH pull down window 7 Select 4 in the NO OF BLADES pull down window 8 Select a blade spread of 0 7 default in the BLADE SPREAD pull down window 9 Select a flash delay of 0 default in the FLASH DELAY pull down window 10 Aim the Strobex at the calibrator and pull the trigger 11 Verify that the Strobex flashes and that the ...

Page 55: ... Bal Meas Only window 4 3 7 FasTrak Test Before doing the FasTrak test make sure you have the special overlay for the calibrator disk See paragraph 4 3 7 1 and Figure 4 7 for samples that can be copied or recreated NOTE This test should be performed in a well lit room 1 Assemble the test set up as shown in Figure 4 1 using the appropriate sensors and cables 2 Place calibrator on its back on a flat...

Page 56: ...e the FasTrak cable 13279 with the test cable shown in Table 4 1 P N 12700 Set the switch on the test cable to DAY MODE operation 2 Keep all settings on the calibrator and Balance Measurement Only screen as they were for the previous FasTrak test See step 9 3 Click on the Start button 4 To simulate night operation turn off all lights in room or enclose the test setup within a darkened enclosure su...

Page 57: ...ith the probable cause and corrective action Table 4 9 Common VXP System Problems Symptom Probable Cause Corrective Action DU and AU fail to connect The Time Out VXP is still waiting for Acquisition Unit 1 Make sure DU is connected with AU with appropriate serial cable Serial cable not connected Connect serial cable 2 Ensure that AU is powered on AU power turned off Turn on AU power 3 If AU does n...

Page 58: ...are incorrect Refer to Section 2 2 3 2 for information on setting the printer DIP Switches The printer is turned off Turn on the printer power The printer power is not connected and or the battery is too low Insert the printer power plug from cable 902 15371 into the printer power jack on the back of the printer The wrong printer is selected in the DP Pull down the File menu in the DP main window ...

Page 59: ...e Modes given in the Overwrite column of Table 4 10 are described below N No overwrite A new log entry will be created each time the error is reported Y Overwrite An existing log entry of the same type will be overwritten if the error reoccurs within the same power up cycle The Error Recovery actions given in the Recovery column of Table 4 10 are described below None No error recovery is or needs ...

Page 60: ...eceive Timeout No Ack Msg From DSP DSP Program Load Error DSP Not Active W E W E W E W E W E W E E E Y Y Y Y Y Y N N internal internal internal internal internal internal user user A004 A004 A004 A004 A004 A004 A003 A003 10301 10302 10303 103xx P S Exp Board Logic Power 5v Bad Not Used Battery Low or Dead W E Y Y user user A004 A020 10304 Not Used 10501 10502 10503 105xx Main Board Velo Rail Fault...

Page 61: ...004 A004 200xx All components None Currently Assigned 21001 21002 21003 21050 21060 21061 210xx General Internal Error Logic Error Range Error Upload Error Balance Hardware Mismatch Az Balance Hardware Mismatch Vib E E E F W E E E N N N N N N user user user user user user A012 A012 A012 E A011 F A005 A008 A008 Table 4 10 VXP Error and Action Codes Continued Error Code Component Condition Level Ove...

Page 62: ...r Get Timer Set Get Region Segment Return Region Segment Device Init Error Device Control Error Device Open Error Device Close Error Device Read Error Device Write Error Task Get Register Error Task Set Register Error F F F F F F F F F F F F F F F F F F F F F F E E E E E E E E F F F F F F F F N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N user user user user user user ...

Page 63: ... DB Read Record DB Add Record DB Delete Record DB File Delete DB Header Checksum Error DB Entry Checksum Error DB Header Dyn Checksum Error LOG File Create LOG File Open LOG File Close LOG File Write LOG File Read LOG File Add E E E E E E E E E E E E E E E E E E N N N N N N N N N N N N N N N N N N user user user internal internal internal internal internal internal user user user user user interna...

Page 64: ...r F E E E N N N N user user user user A011 A011 A012 A012 220xx all components None Currently Assigned Table 4 11 Action Codes ACTION NUMBER EXPLANATION A001 Vibration Monitor Log Memory Usage If the Vibration Monitor Log is more than 80 full download the Vibration Monitor Log to the DU then clear the Monitor Log on the VXP AU A002 VXP Database Memory Usage If the VXP Database is more than 80 full...

Page 65: ...y not be accurate Save Fault Log and contact Chadwick Helmuth as soon as possible A008 Vibration Sensor Failure A vibration sensor has failed Channel number of failed sensor is obtained from the Fault Log First check connections to sensor Next replace failed sensor with a known good sensor If problem moves with the failed sensor then replace the sensor If the problem does not move with the sensor ...

Page 66: ...any power cycles or if the VXP operates in an unpredictable manner the system may be operating under marginal conditions and could fail in the future Maintain copies of the downloaded Fault Logs and contact Chadwick Helmuth A014 File Integrity Error A VXP file was corrupted resulting in a partial or full loss of the file To recover any non corrupted data consult the Fault Log for the name of the c...

Page 67: ... An input signal was corrupted This is normally a transient problem caused by EMI etc The user will be prompted for retry if in menu mode Otherwise the problem will be logged and data acquisition internally retried by the VXP software Occasional occurrences of this error do not constitute a system problem but if the error reoccurs through many power cycles then the Fault Logs should be saved and C...

Page 68: ...4 24 Honeywell Maintenance ...

Page 69: ...rer The components will be shipped to Chadwick Helmuth for repair and returned 5 1 BATTERY REPLACEMENT The AU contains a battery that is used to maintain the contents of the SRAM in the absence of aircraft power It has a life expectancy of approximately 5 to 7 years This battery is located at the rear of the Power Supply Expansion PCB assembly The battery can be replaced by disassembling the AU to...

Page 70: ...9 Re assemble in reverse order 10 After applying power to the unit examine the fault log to ensure that no battery failure indication is present 5 2 CABLE TESTING AND REPAIR All cables should be inspected prior to operating or testing the VXP If there is any obvious damage to a cable it must be repaired in accordance with Chadwick Helmuth MPI 001 This document covers all aspects of cable repair Th...

Page 71: ...ontinuity are present Use the schematics in the following pages for both types of tests In addition to the wiring diagrams shown for each cable a table showing the pinouts is also provided 5 2 1 Photocell Table 5 2 shows the signals coming out of the Acquisition Unit for each photocell connector on the Unit Figure 5 2 shows the photocell cable wiring schematic Figure 5 2 Wiring Schematic for Photo...

Page 72: ... magnetic pickup cable wiring schematic NOTE The Magnetic Pickup input is also compatible with the external Chadwick Helmuth photocell processor Figure 5 3 Wiring Schematic Magnetic Pickup Cable P N 902 10808 Table 5 3 Acquisition Unit Magnetic Pickup Connector Pinouts Pin Function Attributes A Sensor Power 12 Vdc B Mag Pickup Photocell Signal 0 2 to 10 Vac C Spare N A D Ground Ground ...

Page 73: ...e Acquisition Unit Figure 5 4 shows the wiring schematic for the DC Power Connector Cable Figure 5 4 Wiring Schematic for DC Power Cable P N 902 10813 Table 5 4 Acquisition Unit DC Power Connector Pinouts Pin Function Attributes A Aircraft Power Input 28 Vdc B Aircraft Power Return Chassis Ground Chassis Ground 28V Return C Spare N A D Spare N A ...

Page 74: ...ition Unit Figure 5 5 shows the wiring schematic for the FasTrak Connector Cable Figure 5 5 Wiring Schematic for FasTrak Cable P N 902 13279 Table 5 5 Acquisition Unit FasTrak Connector Pinouts Pin Function Attributes A Tracker Power 12 Vdc B Tracker Ground Ground C Tracker Day Night Control TTL D Tracker Signal 0 2 to 10 Vac ...

Page 75: ... Return Ground 3 PC 28 Vdc Input 28 Vdc 4 PC 28 Vdc Return Ground 5 PC 12 Vdc Return Ground 6 PC 12 Vdc Input 12 Vdc 7 PC 12 Vdc Return Ground 8 PC 12 Vdc Input 12 Vdc 9 RS 422 TXDH1 232 TXD1 Differential 0 to 5 Vdc 10 RS 422 TXDL1 232 GND Differential 0 to 5 Vdc 11 RS 422 RXDH1 232 RXD1 Differential 0 to 5 Vdc 12 RS 422 RXDL1 Differential 0 to 5 Vdc 13 RS 232 TXD2 10 Vdc 14 RS 232 GND Ground 15 R...

Page 76: ...5 8 Honeywell Repair and Cleaning Figure 5 6 Wiring Schematic for Computer Connector Cable PN 15371 ...

Page 77: ... velocimeter cable and Figure 5 8 shows the accelerometer cable schematics Figure 5 7 Wiring Schematic for Velocimeter Cable P N 902 11210 Figure 5 8 Wiring Schematic for ICP Accelerometer Cable P N 902 15384 Table 5 7 Acquisition Unit ICP Accelerometer Connector Pinouts Pin Function Attributes A Vibration Sensor Power 8 Vdc B Ground Ground C Vibration Sensor Power 8 Vdc D Velocimeter Signal 19 mV...

Page 78: ...to 28 Vdc 5 Isolated Input Port 3 Isolated 0 to 28 Vdc 6 Isolated Input Port 4 Isolated 0 to 28 Vdc 7 Isolated Input Output Return Chassis Ground 28V Return 8 RS 422 TXDH3 232 TXD3 Differential 0 to 5 Vdc 9 RS 422 TXDL3 232 GND Differential 0 to 5 Vdc 10 RS 422 RXDH3 232 RXD3 Differential 0 to 5 Vdc 11 RS 422 RXDL3 Differential 0 to 5 Vdc 12 CCU2VXP 0 to 5 Vdc 13 VXP2CCU 0 to 5 Vdc 14 CCUGND Groun...

Page 79: ...gnal Ch 1 HTA 1 100 mV Q Acceleration 40 HTA Vibration Signal Ground Ground 41 HTA Vibration Signal Ch 2 HTA 2 100 mV Q Acceleration 42 HTA Vibration Signal Ground Ground 43 HTA Vibration Signal Ch 3 HTA 3 100 mV Q Acceleration 44 HTA Vibration Signal Ground Ground 45 HTA Vibration Signal Ch 1 HTA 4 100 mV Q Acceleration 46 HTA Vibration Signal Ground Ground 47 HTA Vibration Signal Ch 2 HTA 5 100 ...

Page 80: ...ound 66 ICP Signal Ch 2 ICP 14 10 mVac G Acceleration 67 ICP Signal Ch 3 ICP 15 10 mVac G Acceleration 68 ICP Signal Ch 4 ICP 16 10 mVac G Acceleration 69 ICP Signal Ch 1 ICP 17 10 mVac G Acceleration 70 ICP Signal Ch 2 ICP 18 10 mVac G Acceleration 71 ICP Signal Ch 3 ICP 19 10 mVac G Acceleration 72 ICP Signal Ch 4 ICP 20 10 mVac G Acceleration 73 ICP Signal Ch 1 ICP 21 10 mVac G Acceleration 74 ...

Page 81: ...al 6 0 2 to 10 Vac 90 Sensor Power 12 Vdc 91 Mag Pickup Signal 7 0 2 to 10 Vac 92 Ground Ground 93 Mag Pickup Photocell Signal 4 0 2 to 10 Vac 94 Tachometer Signal 1 Return Isolated Ground 95 Tachometer Signal 2 Isolated AC Pulse 96 Tachometer Signal 2 Return Isolated Ground 97 Tachometer Signal 3 Tracker Sig 2 Isolated AC Pulse 98 Tachometer Signal 3 Return Isolated Ground 99 Tachometer Signal 4 ...

Page 82: ...onents and cables as follows 1 Wipe surfaces with a clean lint free cloth moistened with a solution of water and a mild detergent CAUTION Do not use solvents of any type on the display unit screen 2 Wipe surfaces with a clean lint free cloth moistened with clean water to remove detergent residue 3 Dry surfaces with a clean dry lint free cloth or allow to air dry 5 3 3 Display Unit and Printer Plea...

Page 83: ...p of the carrying case 6 2 SHIPPING These instructions for shipping are only for returning any components to the manufacturer All components should be shipped so that no damage will occur The VXP case with its contents should never be shipped via commercial shipping methods To ship an individual component for repair store as follows 1 Place component to be shipped in a polyethylene bag and pack in...

Page 84: ...ve extra components that are normally stored in the protective case they should be placed in a polyethylene bag and placed in a fiberboard container Note on the fiberboard the date the name of the equipment VXP and the serial number The components can withstand a temperature range of 45 to 71 C 50 to 160 F and a relative humidity of up to 90 for extended periods Store the protective case and any o...

Page 85: ...de are shown The following illustrations are keyed to the tables on the facing pages The columns in the tables show in order the reference number in the drawing the Honeywell part number the military part number if any a description of the part the manufacturer and the manufacturer s part number if not manufactured by Honeywell the CAGE code of the manufacturer if other than Honeywell the effectiv...

Page 86: ...7 2 Chadwick Helmuth Company Inc Cable Parts List Figure 7 1 Photocell Cable P N 902 10185 ...

Page 87: ... Jack MS Cable 8 4P 1 20 404 08Z5B Backshell 8 EMI Glenair 380DS014NF0804A2 63 2 30 651 4534 MS35206 217 Screw 4 40 X 1 2 Pan 4 40 654 4SPA Washer 4 Lock Split Seastrom 5850 11 4 50 405 100B Boot MS 10 12 Black Amphenol 9779 513 4 Black 2 60 704 10258 Cable Photocell AR 70 402 0843B MS3116F8 4S Plug MS Cable 8 4S 1 80 560 9092 Cable Tie Velcro Black Kent H Landsberg 65T2BA 1 90 710 H4SA Tubing Hea...

Page 88: ...7 4 Chadwick Helmuth Company Inc Cable Parts List Figure 7 2 Magnetic Pickup Cable P N 902 10808 ...

Page 89: ...S014NF0804A2 63 1 30 651 4534 MS35206 217 Screw 4 40 X 1 2 Pan 4 40 654 4SPA Washer 4 Lock Split Seastrom 5850 11 4 50 405 100B Boot MS 10 12 Black Amphenol 9779 513 4 Black 2 60 703 224S Cable 2 Cond 24 Gauge Shielded Republic Electronic Supply 122 AR 70 404 10Z5 M85049 41 4A Backshell MS 10 12 1 80 402 1023A MS3106A 10SL 4S Plug MS Cable 10 2S 1 90 660 W03 Cable Tie Orange V Velcro M130084 0800 ...

Page 90: ...7 6 Chadwick Helmuth Company Inc Cable Parts List Figure 7 3 DC Power Cable P N 902 10813 ...

Page 91: ...4Z5D Backshell MS 3126 14 Glenair 380DS014NF1408A 2 1 30 651 6434 MS35206 230 Screw 6 32 X 1 2 Pan 4 40 654 6SPA MS51848 47 6 Split Ring Lock 4 50 405 140B MS3420 6 Boot MS 14 Black 2 60 704 9116 Cable 4 Cond 18 W Shield 12 FT 70 404 16Z5C Backshell EMI 16 Glenair 380BS014NF1508A 2 1 80 402 1621 MS3106A 16 11P Plug MS Cable 16 2P 1 90 660 W03 Cable Tie Orange Velcro M130084 0800 08 760 1 100 710 H...

Page 92: ...7 8 Chadwick Helmuth Company Inc Cable Parts List Figure 7 4 Velocimeter Cable P N 902 11210 ...

Page 93: ...51 4534 MS35206 217 Screw 4 40 X 1 2 Pan 2 50 404 10Z5 M85049 41 4A Backshell MS 10 12 1 60 405 100B Boot MS 10 12 Black Amphenol 9779 513 4 Black 2 70 704 8675 Cable 4 24 W Shield AR 80 404 0805 Backshell MS 8 Amphenol 10 101980 81 1 90 568 11648 Backshell 10 Ground 1 100 402 0841A Plug MS Cable 8 4S Bendix PC06P8 4S 1 110 702 229 Wire 22 AWG Wht Str Belden 8503 9 AR 120 660 W03 Cable Tie Orange ...

Page 94: ...7 10 Chadwick Helmuth Company Inc Cable Parts List Figure 7 5 FasTrak Cable P N 902 13279 ...

Page 95: ...10 402 0841B MS3116E8 4P Plug MS Cable 8 4P 1 20 404 08Z5B Backshell 8 EMI Glenair 380DS014NF0804A2 63 2 30 651 4534 MS35206 217 Screw 4 40 X 1 2 Pan 4 40 654 4SPA Washer 4 Lock Split Seastrom 5850 11 4 50 405 100B Boot MS 10 12 Black Amphenol 9779 513 4 Black 2 60 704 8675 Cable 4 24 Double Shielded AR 70 402 0843B MS3116E8 4S Plug MS Cable 8 4S 1 80 710 H4SA Tubing Heat Shrink 1 4 AR ...

Page 96: ...7 12 Chadwick Helmuth Company Inc Cable Parts List Figure 7 6 Computer Connector Cable P N 902 15371 ...

Page 97: ...lenair 380HS002N1310M4 1 30 410 316 Plug Power PC w Cable Lind Electronics CBLSP 10018A 1 40 410 14516 Plug Power Right Angle Pillar Industries 1 50 410 273 Plug Socket D Sub 9 ITT DE 9S 1 60 410 282 Plug Pin D Sub 9 ITT DE 9P 1 70 703 622SB Cable 6 Cond 22 Gauge Alpha Wire 25106 Orange 12 Ft 80 703 622SA Cable 6 Cond 22 Gauge Alpha Wire 25106 Black 12 Ft 90 660 W03 Cable Tie Orange Velcro M130084...

Page 98: ...7 14 Chadwick Helmuth Company Inc Cable Parts List Figure 7 7 ICP Accelerometer Cable P N 902 15384 ...

Page 99: ...l 1 20 568 11648 Backshell 10 Ground 1 30 568 11649 Ring Shield 1 40 404 10Z5 M85049 41 4A Backshell MS 10 12 1 50 651 4534 MS35206 217 Screw 4 40 X 1 2 Pan 2 60 405 100B Boot MS 10 12 Black Amphenol 9779 513 4 Black 2 70 703 224SA Cable 2 Cond 24 Gauge Shielded AR 80 404 08Z5 Backshell 9 EMI Glenair 400HS002M1506L3 1 90 402 0841A Plug MS Cable 8 4S Bendix PC06P8 4S 1 100 660 T05 Ty rap Marker Typ...

Page 100: ...7 16 Chadwick Helmuth Company Inc Cable Parts List ...

Page 101: ... Wiring Diagram Following are foldout wiring diagrams of the VXP interface The interface with the separate connectors is shown in the first two diagrams Figures 8 1 and 8 2 The expansion cable connections are shown in the third foldout Figure 8 3 ...

Page 102: ...8 2 Honeywell Wiring Diagram ...

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