TM 5-3895-374-24-1Identifying Processor Errors while Downloading an Operating SystemThe download process of the operating system by (lie 5/03 processor lakes approximately 45seconds While the download Is i11 progress, the RUN and FLT LEDs remain off The other fourLEDs-RS232, DH485, FORCE, and BATT-turn on in a predefined sequence. If the download issuccessful, those four LEDs remain on together.ATTENTION Jumper J4, located on the bottom corner of the motherboard, provides write protectionfrom any download of a new operating system. The "out of the box" position of this jumper is“PROTECT," or write protect Without the jumper, the 5/03 processor is write protectedIf the download is not successful, the FLT LED turns on a combination of LEDs flash on and offindicating an error condition. The Following LED diagrams and tables provide you with informationregarding error messages possible cause(s) for the erro r, and recommended action to take toresolve the errorThe FollowingProbable CauseRecommended ActionError ExistCycle power and see if the errorMajor hardware failure due torepeats itself If the error clears, youNVRAM errornose, improper grounding or poorshould be able to redownload thepower source.operating system 11 the error persists,contact your Allen-BradleyrepresentativeThe FollowingProbable CauseRecommended ActionError ExistsCycle power and see if the errorMajor hardware failure due torepeals itself It the error clears, youHardwarenoise, improper grounding or poorshould be able to redownload theWatchdog Timeoutpower source.operating system It the error persists,contact your Allen-BradleyrepresentativeRefer to the following key to determine the statusLED indicatorsIndicates the LED Is OFFIndicates the LED is ONChapter 9Troubleshooting(page 3-454)
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