XEROX1108 Users Guide47SECTION 7MACHINE DIAGNOSTICSUSE OF THE FIXED DISK DIAGNOSTIC FLOPPYThe Fixed Disk Diagnostic Floppy is used to test and diagnose faults in the 1108 processor.Most of the tests are executed selectively and interactively by Xerox service personnel whentroubleshooting problems with the Input/Output Processor, Memory Control and Storage Cards,the Central Processor, and the rigid disk.However, you can load and execute these tests automatically by loading the Fixed DiskDiagnostic floppy and performing a 5-boot.Diagnostics should be run when recovering from hardware errors, as indicated by error codes inthe Maintenance Panel (MP). A list of these codes can be found in Section 8.The Fixed Disk Diagnostic floppy can also be used to set the time on a stand-alone Xerox 1108.ALT-5 AND ALT-2 BOOTS FROM THE FIXED DISK DIAGNOSTIC FLOPPY DISKALAGPerforming an Alternate-5 Boot begins a series of tests known as ALAG (Automatic Load andGo). ALAG is initiated by inserting the EI floppy and performing the alternate 5-boot. ALAGcannot be initiated from the rigid disk. Total run time is about 4 minutes 15 seconds. When thesystem is loading the diagnostic program, the MP codes will be 0100 to 0299, 0500 to 0599 or0900 to 0990.The 2-boot eliminates many of the tests run by ALAG and enters an interactive mode wherebythe operator can select the tests to be run. This is specially useful when scanning the rigid diskfor media defects (bad pages).The sequence of automatic tests run by ALAG :Pre-boot5.0 secondsBoot46.5 secondsMemory1.3 minutesUtility(Real time clock, etc)2.0 secondsDisk (index, seek, etc.)14.5 seconds (29MB disk) gdpXq@p gd*?dF*j)p(;]s#a[ gV($ gRLp1' gPU gM > gK' gG @ gE  gA S g?I g;^ g7s@ g3 g0 p -" g--* g+,- g)V g'P g#t@ g!@!> g  g0-KT.* K.* K^.* K.*= K h.*tTVk( XEROX1108 Users Guide48Disk fault analysis1.2 minutesDisk scavenger1.0 seconds (if no problems found)Media scan27.0 secondsIf errors are found during Disk Scavenger or Media Scan, the tests will run longer than the 4minutes 15 seconds mentioned earlier.During the Boot Diagnostics, the system attempts to set the time from a time server on anetwork. If your 1108 is a stand-alone system, this attempt will halt and the Maintenance Panelwill flash code number 0322 alternating with 0002. Simply press the Alt B button to bypass 0322and continue on to 0333. Booting will continue without further interruption, several morepatterns will flash on the CRT, the Memory diagnostics will run for about one minute (0645 MPcode) and the following messages will appear on the display:(Stand-Alone 1108 Only):Locating Time Server. . .failedPlease enter local time parametersTime zone offset from Greenwich (-12 -12):(type -8 for PST, for example)Minute offset:(type carriage-return)Day of DST (0-366):(carriage-return)Last day of DST(0-366):(carriage-return)The correct date and time are returned, and you're prompted:Do you wish to change the timeConfirm (Y/N):(usually N)System then responds with the following display.nnMegabyte Storage Diagnostic Program 5.0>Fault AnalysisMP Code:1n99>PV ScavengerNo problems found>Bad Page Utility>Media Scan gdpXq@p gd*?dF*j)pK].* K[d .*"KX .* gU 6% gR gN8 gL9 gJ5& gHaG gF-C gC7 g@KTest Bad PagesNo new pages>Exit>Successful completionThe MP reads 1499 for successful completion of the 42 MB Disk configuration, 1799 for the 29MB, and 1199 for the 10 MB.You may depress STOP during any test , if your purpose was a Memory diagnostic test or timeset and you wish to boot into Lisp.Return to the last logout of Lisp from the EI diagnostics by typing Boot or by pressing B Reset. FAILURES IN ALAGIf ALAG fails during Boot, Utility or Disk tests, the MP will alternate between the failing testnumber and an error code. Xerox service representatives will take appropriate action based onthe meaning of these failures.If ALAG fails during Memory test, the failing test number will remain on the MP while an errorlog is being built. Once the error log is completed, the MP goes to 0699. If this number appearson the MP, the Memory Diagnostic test has failed and your Xerox representative should benotified.If your display reports the rigid disk error message "New Pages," make note of the pages andcall the Xerox service representative.Other messages that can appear in the PV Scavenge area are:Please reconstruct bad page table or irreparable damage--call the Xerox service office. Pleasereinstall software. Try reinstalling software before you call your 1100 Support office. gdpXq@p gd*?dF*j)pK] K[ KYwKWC KUKRKP gLY gJ gF L gD g@Dtp gTVk($ Helvetica Logo Helvetica Helvetica  Helvetica 2E O j/0M69S7.BXknowlesJuly 2, 1984 9:05 AM