TEKTRONIX TDS400 er Series repair help needed

[El_Paco]

tektronix diag fail ++acq

hi - i have a defect TDS 420 - someone can get me some repair help?

At first - most off the time if i powerup the scope - i see nothing on the screen - but i hear the fan and all of the Front-panel LED's are on.

Atr next i maked a cable for the terminal mode of the scope.
(internal com - Port send also messages)
For this i use the downloadable service-manual.
I get the following messages :


Bootrom Header Checksum passed.
Bootrom Total Checksum passed.
BootRom Check Sum passed.
Bus Error Timeout test passed.
Bus Error Write to Bootrom passed.
GPIB Test passed.
Kernel Diagnostics Complete.
Bootrom Header Checksum passed.
Bootrom Total Checksum passed.
BootRom Check Sum passed.
Bus Error Timeout test passed.
Bus Error Write to Bootrom passed.
GPIB Test passed.
Kernel Diagnostics Complete.

Calling SDM (monitor) Routine.

SDM (monitor) not enabled.
Enabling Bus Control register. Value = 0x2
Flashrom Programming Voltage is OFF.
Flashrom DSACK and JumpCode test passed.
Flashrom Checksums passed.
Bootrom Diagnostics Complete.

Transferring control to the Flashrom.
sysDramControllerInit
sysDramByteStrobeTest
sysDramTest
bcopy(<Idata>)
bzero(<bss>)
intVecBaseSet(getVbr())
sysSymTbl=standAloneSymTbl
sysDevDramTest
0x0 bytes of development dram found
validateDataSpace
Outer Kernel DSACK Test
Pending Interrupt Test
Walk IPL to Zero Test
Timer Int Test
ERRORI : 2erreoror log ilog aliheas ..LbgAdeNen aired
eset
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
ERORID: 149 diagnostic te t fail rD initsyC()
Wfm1 mem size
xt0 mem sized agDsstic test fyil re initVSCT)e
Dsy Text1 mem size
Acq number of digitizers
Acq mem size
Cpu timer interval uSec
Cpu Dram size
NvRam mem size
Opt RS232/ Cent presence
Acq 8051 presence
Acq ADG209C presence
Acq record length size
ERORID: 64 wrong hardware configuration Dsp Instr mem size probe, expect: 1ffff,
actual: 0
ERRORID: 64 wrong hardware configuration Dsp D1 mem size probe, expect: ffff, ac
tual: 0
ERRORID: 64 wrong hardware configuration Dsy Vect0 mem sdsyWpaiteC elpeco: fffc
actka ..0
.E...R... 64.wrong ha.dwa.e con.igura..o. Dsy V.ct1 mem..ize probe, exp
ect: fff, actual: 0
ERRORID: 64 wrong hardware configuration Dsy Wfm0 mem size probe, expect: 1ffff,
actual: 0
ERRORID: 64 wrong hardware configuration Dsy Text0 mem size probe, expect: ffff,
actual: 0
ERRORID: 64 wrong hardware configuration Acq number of digitizers probe, expect:
4, actual: 0
ERRORID: 64 wrong hardware configuration Acq ADG209C presence probe, expect: 1,
actual: 0

Bus Error
Program Counter: 0x010f4ac4
Status Register: 0x3000
Access Address : 0x00eb0000
Instruction : 0x4e5e
Special Status : 0x0125
Task: 0x2ffff00 "rootTask"

but sometimes i get also this :


Bootrom Header Checksum passed.
Bootrom Total Checksum passed.
BootRom Check Sum passed.
Bus Error Timeout test passed.
Bus Error Write to Bootrom passed.
GPIB Test passed.
Kernel Diagnostics Complete.

Calling SDM (monitor) Routine.

SDM (monitor) not enabled.
Enabling Bus Control register. Value = 0x2
Flashrom Programming Voltage is OFF.
Flashrom DSACK and JumpCode test passed.
Flashrom Checksums passed.
Bootrom Diagnostics Complete.

Transferring control to the Flashrom.
sysDramControllerInit
sysDramByteStrobeTest
sysDramTest
bcopy(<Idata>)
bzero(<bss>)
intVecBaseSet(getVbr())
sysSymTbl=standAloneSymTbl
sysDevDramTest
0x0 bytes of development dram found
validateDataSpace
Outer Kernel DSACK Test
Pending Interrupt Test
Walk IPL to Zero Test
Timer Int Test
1169d88 _repairSemOn +121c: 1169056 (2fda4d8, 3000000, 1000706, 2710, 2fda4d8,
2fda0f0, 3e8, ee, 32, 2ffff00)
1169086 _repairSemOn +51a: 1000706 ([2fda4d8, 23418, 2ffd8f0, 0, 1169d8a])
100081c : 10025e0 ([3, 1f4, 1000700, fe, 3])
10025f4 _tt +1b6a: 1002758 ([0, 115e13a, 2fffebc, 1000822, 3])
1002762 _tt +1cd8: 1002880 ([2fffe90, 10025fa, 0, 115e13a, 2fffebc])
100288c _runScope +7a : 10028c2 ([2, 0, 2fffe80, 1002768, 2fffe90])
10028ce _runScope +bc : 1002896 ([2fffe78, 1002892, 2, 0, 2fffe80])
10028ac _runScope +9a : 10f515a ([3, 2fffe68, 10028d4, 2fffe78, 1002892])
10f51e6 _mRegs +ee4b6: _tt (0, 0, 0, 0, 0)
Sorry, traces of my own stack begin at tt ().
t2ffff00: busRequest(): busReq timeout.
1169d88 _repairSemOn +121c: 1169056 (2fda4d8, 3000000, 1000706, 2710, 2fda4d8,
2fda0f0, 3e8, ee, 32, 2ffff00)
1169086 _repairSemOn +51a: 1000706 ([2fda4d8, 23418, 2ffd8f0, 0, 1169d8a])
100081c : 10025e0 ([3, 1f4, 1000700, fe, 3])
10025f4 _tt +1b6a: 1002758 ([0, 115e13a, 2fffebc, 1000822, 3])
1002762 _tt +1cd8: 1002880 ([2fffe90, 10025fa, 0, 115e13a, 2fffebc])
100288c _runScope +7a : 10028c2 ([2, 0, 2fffe80, 1002768, 2fffe90])
10028ce _runScope +bc : 1002896 ([2fffe78, 1002892, 2, 0, 2fffe80])
10028ac _runScope +9a : 10f515a ([3, 2fffe68, 10028d4, 2fffe78, 1002892])
10f51e6 _mRegs +ee4b6: _tt (0, 0, 0, 0, 0)
Sorry, traces of my own stack begin at tt ().
t2ffff00: busRequest(): busReq timeout.
1169d88 _repairSemOn +121c: 1169056 (2fda4d8, 3000000, 1000706, 2710, 2fda4d8,
2fda0f0, 3e8, ee, 32, 2ffff00)
1169086 _repairSemOn +51a: 1000706 ([2fda4d8, 23418, 2ffd8f0, 0, 1169d8a])
100081c : 10025e0 ([3, 1f4, 1000700, fe, 3])
10025f4 _tt +1b6a: 1002758 ([0, 115e13a, 2fffebc, 1000822, 3])
1002762 _tt


i also had have the case that all LEDs - are on, go off - screen was powered up - but i see only a green sreen - with nothing.

If somreone can get me some information /help this would be really needet - i dont know if it is possible to repair.

I also ask me if someone had a downloadable firmware for this device?

any information would be usefull - best regards,
El_Paco

 

[pit]

tektronix bootrom tds

Hi!

Have you checked power supply voltages for correct voltage and low ripple? Excess ripple on supply voltages often leads to funny failures.


CU