Another old TEKTRONIX TDS544A need help deciphering console output

[radioguy123]

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.
Thanks



        Bootrom 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 = 0x67
        IMR 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


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            VxWorks version 5.0.2.
            Stand Alone Rom Version.
            Columbia Proc. Brd. Rev COLOR-2!BIG
            System Ram Size = 2097152, Proc ID = 0x31
            NvRam Size = 131072, Clock Interval = 13108 usecs,
            Bootline Storage Size = 220 stored @0x4000024
            Flash ID = 0x4, Flash Wait states = 3 (Misc. reg = 0x1c),
            KERNEL: WIND version 2.0. GCC COMPILED
            Copyright 1991-2001, Tektronix, Inc.
            made on: Fri Jan 29 13:15:26 PST 1993.
            Copyright Wind River Systems, Inc., 1984-1990
Executing Diagnostics
Start Power-On Diag Sequence
hwAccountant probe routines
  Probe for unexpected pending ints
  Dsp Instr mem size
  Dsp D2 mem size
  Dsp D1 mem size
  Dsy Vect0 mem size
  Dsy Vect1 mem size
  Dsy Wfm0 mem size
  Dsy Wfm1 mem size
  Dsy Text0 mem size
  Dsy Text1 mem size
  Acq number of digitizers
  Acq mem size
  Cpu timer interval uSec
  Cpu Dram size
  NvRam mem size
dspForcedBus.................... pass
cpuDiagD2MiscReg................ pass
cpuDiagDSPIntMaskReg............ pass
cpuDiagDsyAccess................ pass
dsp68kMemTest................... pass
cpuDiagFIFOMem.................. pass
dspRunVerify.................... pass
dspBusRequestTest............... pass
dspImplicitBusAccess............ pass
dspTristarMemTest............... pass
dsyDiagPM100Reg................. pass
dsyPM011RegMem.................. pass
dsyLCSRamdacRegMem.............. pass
dsyMonoRamdacRegMem............. UNTESTED
dsyVGARamdacRegMem.............. pass
dsyDiagPPRegMem................. pass
dsyDiagRasRegMem................ pass
dsyDiagRegSelect................ pass
dsyDiagAllMem................... pass
dsySeqYTModeV0Intens............ pass
dsyDiagSeqXYModeV1.............. pass
dsyRastModeV0Walk............... pass
dsyRastModeV1Attrib............. pass
dsyWaitClock.................... pass
cpuDiagAllInts.................. pass
nvLibrariansDiag................ pass
calLibrarianDefaultCk........... pass
dspForcedBus.................... pass
acqProcThermistor............... pass
digDiagD1Conf................... pass
digDiagConf..................... pass
extTrigRegDiag.................. pass
vertRegDiag..................... pass
cvrRegDiag...................... pass
trigSrcRegDiag.................. pass
lstlDiag........................ pass
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 failed

vertAttenStrobeDiag............. pass
vertAttenShiftReg............... pass
dacRangeDiag.................... ***FAIL***
..error details:
ERRORID: 149 diagnostic test failure Dac Range Test
** DAC system failure

fpDiagConf...................... pass
optDiagPM110Reg................. pass
optDiagFloppyCacheMem........... pass
optDiagFloppyControllerIO.......->  pass
optDiagFloppyDrive.............. pass
optRS232DuartIO................. UNTESTED
optRS232DuartIntLoop............ UNTESTED
optCentronCntrlReg.............. UNTESTED
optTv8bitRegDiag................ UNTESTED
optTvShiftRegDiag............... UNTESTED
optTvXparentCodes............... UNTESTED
optTvDontCareCodes.............. UNTESTED
optTvEdgeAndLevel............... UNTESTED
optTvSyncLevels................. UNTESTED
Executing Smalltalk
hwAccountant probe routines
  Probe for unexpected pending ints
  Dsp Instr mem size
  Dsp D2 mem size
  Dsp D1 mem size
  Dsy Vect0 mem size
  Dsy Vect1 mem size
  Dsy Wfm0 mem size
  Dsy Wfm1 mem size
  Dsy Text0 mem size
  Dsy Text1 mem size
  Acq number of digitizers
  Acq mem size
  Cpu timer interval uSec
  Cpu Dram size
  NvRam mem size
can't open input 'fd0:/startup.bat'
  errno = 0x13 (S_errno_ENODEV)

Smalltalk/V Sun Version 1.12
Copyright (C) 1990 Object Technology International Inc.

[radioguy123]

Guess this thing is just too old to care about

[andy2000]

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).

[radioguy123]

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 file
I 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.

[whatboy]

can't open input 'fd0:/startup.bat'

Trying to open startup.bat from floppy

[radioguy123]

Hello whataboy
Yes that is what that means, not startup.bat
Someone 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 console
thanks

[whatboy]

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 it 

guess you could put the tek logo on a floppy to show it at start up, the HDD has a startup.bat too!

[radioguy123]

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 failed

dacRangeDiag.................... ***FAIL***
..error details:
ERRORID: 149 diagnostic test failure Dac Range Test
** DAC system failure