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LeCroy WaveRunner44xi Boot failure
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Hello, I just got hold of this scope and (to me) it looks very good. Maybe too good? When first booting, it showed the message "CMOS Checksum error, Defaults loaded". When rebooting, Win XP seems to start OK, but when the oscilloscope application starts, it shows the message "LeCroy XStream software detected a fatal error. An inconsistency was detected in the instrument's software. It came from the following source: PCI Card. Summary: Gigabit communication error." Is anyone familiar with this? I would love to see this scope up and running, but right now it refuses to do just anything. Any suggestions welcome! Regards, Staffan |
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1-replace the CMOS battery and load optimized parameters in BIOS and set the time/date correctly in BIOS
2- take out the interface card (which has an ethenet connection to the acquisition board) and clean/deoxide the edge connector most likely these will fix it otherwise the problem is still most likely with the PCI interface card |
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Hello Staffan,
Starting with the basics, when starting Windows do you hear 1 beep, 2 beeps, or no beeps? The results of this will point you to a PCI card issue, or acquisition board (or power) issue.
Dave
From: LeCroyOwnersGroup@groups.io <LeCroyOwnersGroup@groups.io> On Behalf Of Staffan
Sent: Thursday, May 5, 2022 12:43 PM To: LeCroyOwnersGroup@groups.io Subject: [LeCroyOwnersGroup] LeCroy WaveRunner44xi Boot failure
Hello,
I just got hold of this scope and (to me) it looks very good.
Maybe too good?
When first booting, it showed the message "CMOS Checksum error, Defaults loaded". When rebooting, Win XP seems to start OK, but when the oscilloscope application starts, it shows the message
"LeCroy XStream software detected a fatal error. An inconsistency was detected in the instrument's software. It came from the following source: PCI Card. Summary: Gigabit communication error."
Is anyone familiar with this? I would love to see this scope up and running, but right now it refuses to do just anything.
Any suggestions welcome!
Regards, Staffan
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Dave and Amirb,
Thanks for the very fast response! The CMOS battery is changed already. I loaded the optimized settings in the BIOS and set the date. There are two beeps (very close together...) when starting Win XP. Will clean the connector, but it will have to wait for tomorrow... Is there any documentation where one can find the meaning of the beeps? Regards, Staffan |
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Smells like an issue on the acq board… Does the scope go in simulation mode, i.e. does it show some signals (sine, square, etc…), or does the software quit after reporting the error ??
Have you checked in the d:\logs folder, there’s a specific file reporting h/w related issues, but several files might contain helpful information. On 5 May 2022, at 22:13, Staffan <testjarfalla63@...> wrote:
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2 beeps means the PCI card is happy, as well as the Windows driver. 1 beep would mean the PCI card can’t speak to the acquisition board, but that the card itself is ok. No beeps means something wrong with the PCI interface card, or just that the Windows driver isn’t loaded.
In your case, it sounds like communication is possible (no physical connection issues), but data from the memory on the acquisition board can’t be transferred. This could be an clock oscillator / PLL failure on the acquisition board, local power supply failure on the acquisition board, or main power supply failure (on a particular rail, low, etc). Of course could be more serious (like a failed memory ASIC), but the basics are somewhere to start. Unfortunately acquisition board problems are difficult to tackle on the Xi units, given no schematic and physical challenges with the form factor of the scope. But good luck in any case.
Dave
From: LeCroyOwnersGroup@groups.io <LeCroyOwnersGroup@groups.io> On Behalf Of Staffan
Sent: Thursday, May 5, 2022 4:14 PM To: LeCroyOwnersGroup@groups.io Subject: Re: [LeCroyOwnersGroup] LeCroy WaveRunner44xi Boot failure
Dave and Amirb, |
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Hello,
I guess the PCI bridge is the small board with two flat cables towards the acquisition board? Cleaning all connnectors in the path from CPU board to acquisition board (deoxit) didn't do much so I guess it is indeed the acquisition board. I have checked the D:/Logs folder, but don't really know what to look for. When starting the application, the first message is now: "Gigabit communication error" "MAM phase error detected CODE error detected A mini-dump file was written to the Logs directory (D:/Logs/LecMiniDump55.dmp)" I can't read the .dmp files, seem to be some kind of binary? The "MAM phase error" sounds a bit worrying. Any comments or suggestions would be much appreciated. Before I end up with an XP computer in a slightly odd form factor I thought I should at least give the voltages a shot. Has anyone any suggestions as to what to expect? There seem to be three bigger connectors from the power supply to the acquisition board J2, J3 and J4. Any hints on what signals and voltages to look for would be very much appreciated! One more thing. I can get past all error messages by clicking "Advanced/continue". The oscilloscope screen appears, but no traces of course. The front panel is not responding and nothing is lit. Perhaps this is expected? The DSO crashes after a couple of seconds... Regards, Staffan |
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MAM Phase error likely indicates a problem in the PLL circuitry on the acq board (that ‘synchronises’ the ADC’s and the acquisition memory)
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I once had such an error on a WR6050A, but never managed to fix it. As Dave mentioned, as the Xi service manual that LeCroy recently made available doesn’t contain any schematics, troubleshooting is not gonna be easy… 😔 On 6 May 2022, at 21:30, Staffan <testjarfalla63@...> wrote:
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Hello,
I just tried to figure out if I could find anything from the power supply voltages feeding the acquisition board. Except for regular voltages (+-12 V, +-5 V, +-3.3 V) I notice that pin 11 on J3 (green) is at 0.15 V. It does seem a bit odd. Anyone has any experience with this unit? I would hate to scrap it if there is any remote chance to fix it! Regards, Staffan |
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Don’t know – but perhaps look at it with another scope. With a DVM you won’t see oscillating behavior, and this might be the 50/60Hz line sync. Given it is just a single wire, I’d suspect something like that or a power-good signal, as usually the main power rails are multiple conductors / pins.
From: LeCroyOwnersGroup@groups.io <LeCroyOwnersGroup@groups.io> On Behalf Of Staffan
Sent: Friday, May 13, 2022 2:24 PM To: LeCroyOwnersGroup@groups.io Subject: Re: [LeCroyOwnersGroup] LeCroy WaveRunner44xi Boot failure
Hello, |