关于泰克TDS420 示波器维修

mipangzhi

前段时间论坛收了台TDS420 ,现在遇到困难了，高手来帮下忙
情况示这样的，开机到快自检界面出来的时候就图上这个画面了

mipangzhi

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
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
  Opt RS232/ Cent presence
  Acq 8051 presence
  Acq ADG209C presence
  Acq record length size
dsyWaitClock ................... pass
clockCalVerify ................. pass
cpuDiagBatTest ................. pass
cpuDiagAllInts ................. pass
cpuEEromLibDiag ................ pass
calLibDefaultCk ................ pass
dspForcedBus ................... pass
dsp68kD2MemTest ................ pass
optRS232DuartIO ................ UNTESTED
dsp68kMemTest .................. pass
dspRunVerify ................... ***FAIL***
..error details:
D: 149 diagnostic test failu
                            d ssyRuDVeiify
agtristar dRd not exit esn loop eroperly,'FO' bit nRteset
g ................ pass
atBusTest ...................... pass
dsyDiagResetReg ................ pass
dsyDiagVscReg .................. pass
dsyDiagPPRegMem ................ pass
dsyDiagRasRegMem ............... pass
dsyDiagRegSelect ............... pass
dsyDiagRamdacRegMem ............ pass
dsyDiagAllMem .................. pass
dsySeqYTModeV0Intens ........... pass
dsyDiagSeqXYModeV1 ............. pass
dsyRastModeV0Walk .............. pass
dsyRastModeV1Attrib ............ pass
dsyWaitClock ................... pass
attn8051testResult ............. pass
attnDACReadback ................ pass
acq8051testResult .............. pass
adgRegDiag ..................... pass
dsyWaitClock ................... pass
adgMemTestDiag ................. pass
trigComparatorTest ............. ***FAIL***
..error details:
149 diagnostic test failu
                         e trigCacpaqaRorTest
                                             aTRIGA status mpter trDggir: eap g
1,Aact = 0
*l alpha trigger (XTRIG)
................. pass
dsyWaitClock ................... pass
fpDiagConf ..................... pass
$Header: scopeSTR.version,v 1.118 93/07/21 10:15:12 eda Exp $
->
Smalltalk/V Sun Version 1.12
Copyright (C) 1990 Object Technology International Inc.



这个出问题，是什么问题？
dspRunVerify ................... ***FAIL***
..error details:
D: 149 diagnostic test failu
                            d ssyRuDVeiify

agtristar did not exit esn loop eroperly,'FO' bit nRteset

mipangzhi

这个起动信息是自制串口线德到的，cpu板上有一标准9针串口把线接上就行了，注意收发对应

tanfuhave

帮你顶起，祝早日找到故障

mipangzhi

tanfuhave 发表于 2013-6-16 18:32
帮你顶起，祝早日找到故障

谢了

bg8up

建议调整速率再来一次，或换一个程序来接收。格式是这样的..error details:ERRORID:149 diagnostic test failure dspRunVerify XXXtristar did not exit XXXX loop properly,《'FO' bit nRteset》不详。

DSP板，就有ADG500B那板子可以目检看看。

另外采集板还有个TrgCmp有报错，但是字符串都掉了

mipangzhi

dsp板外观看不出来问题，我把速率调低点在看看

mipangzhi

还有显示板5v对地正向电阻80duo鸥反向200不到显示板是否有问题

mipangzhi

晚上找了个TDS520的服务手册对照CPU dip开关设置 跳过自检 ，问题还是一样，说明问题应该在显示板上

mipangzhi

我找到的这个TDS520服务手册，好像有它的详细原理图

bg8up

mipangzhi 发表于 2013-6-18 00:44
晚上找了个TDS520的服务手册对照CPU dip开关设置 跳过自检 ，问题还是一样，说明问题应该在显示板上

好奇问下，自检跳过有问题的单元，这个单元的问题就不再影响设备了吗

mipangzhi

不是，就是开机不运行自检程序

davidai

换DSP板