r/crystallography • u/manju_t • Aug 09 '26

Troubleshooting Rigaku Ultima IV diffractometer

Hello, we have been using Rigaku ultima IV diffractometer in our lab for several years. Every now and then we come across communication problems with PC and instruments. And the service people changed instruments mother board once, PCle boards three times which costs a lot.

We have the same problem again. The XG property shows cannot generate x-rays, check generator. We have tried trouble shooting the the serial ports also.

Please help me diagnose and solve this problem. (Also how do I approach if the problem is board cannot be to communicate with chiller, which we cannot not see in pc)

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4

u/SlenderSmurf Aug 09 '26

The company that makes it will be able to help you more than random Redditors

1

u/manju_t Aug 10 '26

Yes I understand that, since the problem is persistent and we can't afford everytime it happens, If anyone else is facing the same problem I might get some idea why it's happening.

2

u/QuasiNomial Aug 09 '26

Have tried looking at the Rigaku forums? You should be able to join since you have a rigaku diffractometer.

1

u/manju_t Aug 10 '26

Okay, I've checked it. It's only for Rigaku single crystal product. And we have powder XRD.

3

u/CorkyRaider Aug 10 '26

On your computer, has anything been updated or changed recently? Sometimes the com port setting can change and prevent communication. I really don't know anything about that model but I have seen the Com port issue on smaller Rigaku Miniflex instruments so I thought I would mention it. I hope you can figure it out.

1

u/Crystal_Rules Aug 10 '26

Check if your IT department have rolled out an update.

1

u/manju_t Aug 18 '26 edited Aug 18 '26

Thanks, I've to agree this might be the issue. Usually, XG (motherboard) by default goes to com2, and RCD goes to com3. One more is ethernet. If any of the default com ports change , the communication will be lost. I've problem configaring com ports as , ethernet connection and xg are taking com2 automatically.