Another old TEKTRONIX TDS544A need help deciphering console output - Page 1
Forum section: electronics / repair

author: radioguy123
author_rank: Regular Contributor
timestamp: January 04, 2022, 06:20:13 pm
content: Tektronix TDS544A with the usual fail acq and attn/acq.Replaced all the electrolytic capacitors.Triple and quadruple cleaned the board. Soap water toothbrush.No chance whatsoever. Got the console output working over opt13 with adapter cable on j40.First time ever seeing this info. Maybe someone could look through this.ThanksBootrom Header Checksum passed.Bootrom Total Checksum passed.BootRom Check Sum passed.Bus Error Timeout test passed.Kernel Diagnostics Complete.Calling SDM (monitor) Routine.Enabling Bus Control register. Value = 0x67IMR 1 Register test passed.Misc. Register test passed.Timer Interrupt test (Auto-Vector) passed.NVRam DSACK test passed.NVRam Write protected.Flashrom DSACK and JumpCode test passed.Flashrom Checksums passed.Bootrom Diagnostics Complete.Transferring control to the Flashrom.Flash Rom ID is bogus! We'll continue for now...-> Console Loopback O.K. <-.No ethernet available]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]] ]]]] ]]]]]]]]]] ]] ]]]] TM] ]]]]]]]]] ]]]]]] ]]]]]]]] ]] ]]]]]] ]]]]]]] ]]]]]]]] ]]]]]] ] ]] ]]]]]]] ]]]]] ] ]]] ] ]]]] ]]] ]]]]]]]]] ]]]] ]] ]]]] ]] ]]]]]]]]] ]]] ]] ] ]]] ]] ]]]]] ]]]]]] ]] ]]]]]]] ]]]] ]] ]]]]]]]]] ] ]]]] ]]]]] ]]]]]]]] ]]]] ]] ]]]] ]]]]]]] ]]]]]]]]]] ]]]]] ]]]]]] ] ]]]]] ]]]] ]] ]]]] ]]]]]]]] ]]]]]]]]]]] ]]]]] ] ]]]]]] ] ]]] ]]]] ]] ]]]] ]]]] ]]]] ]]]]]]]]]]]] ]]]]] ]]] ]]]]]]] ] ]]]]]]] ]]]] ]]]] ]]]] ]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]] Development System]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]VxWorks version 5.0.2.Stand Alone Rom Version.Columbia Proc. Brd. Rev COLOR-2!BIGSystem Ram Size = 2097152, Proc ID = 0x31NvRam Size = 131072, Clock Interval = 13108 usecs,Bootline Storage Size = 220 stored @0x4000024Flash ID = 0x4, Flash Wait states = 3 (Misc. reg = 0x1c),KERNEL: WIND version 2.0. GCC COMPILEDCopyright 1991-2001, Tektronix, Inc.made on: Fri Jan 29 13:15:26 PST 1993.Copyright Wind River Systems, Inc., 1984-1990Executing DiagnosticsStart Power-On Diag SequencehwAccountant probe routinesProbe for unexpected pending intsDsp Instr mem sizeDsp D2 mem sizeDsp D1 mem sizeDsy Vect0 mem sizeDsy Vect1 mem sizeDsy Wfm0 mem sizeDsy Wfm1 mem sizeDsy Text0 mem sizeDsy Text1 mem sizeAcq number of digitizersAcq mem sizeCpu timer interval uSecCpu Dram sizeNvRam mem sizedspForcedBus.................... passcpuDiagD2MiscReg................ passcpuDiagDSPIntMaskReg............ passcpuDiagDsyAccess................ passdsp68kMemTest................... passcpuDiagFIFOMem.................. passdspRunVerify.................... passdspBusRequestTest............... passdspImplicitBusAccess............ passdspTristarMemTest............... passdsyDiagPM100Reg................. passdsyPM011RegMem.................. passdsyLCSRamdacRegMem.............. passdsyMonoRamdacRegMem............. UNTESTEDdsyVGARamdacRegMem.............. passdsyDiagPPRegMem................. passdsyDiagRasRegMem................ passdsyDiagRegSelect................ passdsyDiagAllMem................... passdsySeqYTModeV0Intens............ passdsyDiagSeqXYModeV1.............. passdsyRastModeV0Walk............... passdsyRastModeV1Attrib............. passdsyWaitClock.................... passcpuDiagAllInts.................. passnvLibrariansDiag................ passcalLibrarianDefaultCk........... passdspForcedBus.................... passacqProcThermistor............... passdigDiagD1Conf................... passdigDiagConf..................... passextTrigRegDiag.................. passvertRegDiag..................... passcvrRegDiag...................... passtrigSrcRegDiag.................. passlstlDiag........................ passctlDiag......................... ***FAIL***..error details:ERRORID: 149 diagnostic test failure ctlConfidencDiag** SMUT was NOT asserted** SDUT was NOT asserted** 2.50e-9 <= exp <= 1.20e-8 actual= 0.00e-1 main TI failedvertAttenStrobeDiag............. passvertAttenShiftReg............... passdacRangeDiag.................... ***FAIL***..error details:ERRORID: 149 diagnostic test failure Dac Range Test** DAC system failurefpDiagConf...................... passoptDiagPM110Reg................. passoptDiagFloppyCacheMem........... passoptDiagFloppyControllerIO.......-> passoptDiagFloppyDrive.............. passoptRS232DuartIO................. UNTESTEDoptRS232DuartIntLoop............ UNTESTEDoptCentronCntrlReg.............. UNTESTEDoptTv8bitRegDiag................ UNTESTEDoptTvShiftRegDiag............... UNTESTEDoptTvXparentCodes............... UNTESTEDoptTvDontCareCodes.............. UNTESTEDoptTvEdgeAndLevel............... UNTESTEDoptTvSyncLevels................. UNTESTEDExecuting SmalltalkhwAccountant probe routinesProbe for unexpected pending intsDsp Instr mem sizeDsp D2 mem sizeDsp D1 mem sizeDsy Vect0 mem sizeDsy Vect1 mem sizeDsy Wfm0 mem sizeDsy Wfm1 mem sizeDsy Text0 mem sizeDsy Text1 mem sizeAcq number of digitizersAcq mem sizeCpu timer interval uSecCpu Dram sizeNvRam mem sizecan't open input 'fd0:/startup.bat'errno = 0x13 (S_errno_ENODEV)Smalltalk/V Sun Version 1.12Copyright (C) 1990 Object Technology International Inc.

author: radioguy123
author_rank: Regular Contributor
timestamp: January 05, 2022, 05:43:38 pm
content: Guess this thing is just too old to care about

author: andy2000
author_rank: Frequent Contributor
timestamp: January 05, 2022, 06:01:46 pm
content: Usually there are one or more open traces or vias. Often, the opens are hidden under SMD parts, so they can be hard to find. The last one I repaired took hours of inspection to find all of the opens.Trying to trouble shoot it based on the diagnostics will lead to frustration since there are probably multiple problems. Also, many of the opens might create subtle problems that the diagnostics will miss (such as connections to decoupling caps).

author: radioguy123
author_rank: Regular Contributor
timestamp: January 05, 2022, 06:22:19 pm
content: Thanks Andy for the reply.The printout does show some interesting stuff.On one line it says the boot rom ID is bogus ?? What could that mean ??And the last line something about not loading a fd0 startup.bat fileI don't know.Yes I'm going to have to go back over the acq board with a fine tooth comb.I really need a better microscope.

author: whatboy
author_rank: Regular Contributor
timestamp: January 06, 2022, 08:23:46 am
content: can't open input 'fd0:/startup.bat'Trying to open startup.bat from floppy

author: radioguy123
author_rank: Regular Contributor
timestamp: January 06, 2022, 02:24:57 pm
content: Hello whataboyYes that is what that means, not startup.batSomeone on the other forum told me that's normal.Along with the bootrom bogus ID. All normal.I guess TEK didn't thing anyone would ever see that ;-)Interesting things you find out when running the consolethanks

author: whatboy
author_rank: Regular Contributor
timestamp: January 06, 2022, 05:39:12 pm
content: My TDS 684C has a HDD (well it is disconected because it won't boot if connected) and with i plugged in, It showed the Tektronix logo at boot, with out it, now it doesn't show itguess you could put the tek logo on a floppy to show it at start up, the HDD has a startup.bat too!

author: radioguy123
author_rank: Regular Contributor
timestamp: January 10, 2022, 09:44:32 pm
content: Well it seems to me that according to this console print out that there is not much failing on this scope.But I still get absolutely no signal from the inputs on any channel.The noise does not increase on the traces even at the lowest voltage vertical scale.There seems to be only two main fails. Everything else passes.So the cpu and acq boards are talking to each other.Unfortunately I am just having trouble interpreting the meaning of these errors ?!!?ctlDiag......................... ***FAIL***..error details:ERRORID: 149 diagnostic test failure ctlConfidencDiag** SMUT was NOT asserted** SDUT was NOT asserted** 2.50e-9 <= exp <= 1.20e-8 actual= 0.00e-1 main TI faileddacRangeDiag.................... ***FAIL***..error details:ERRORID: 149 diagnostic test failure Dac Range Test** DAC system failure