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Dear All,
I have started having a problem with my 840D. The thing is that when I turn the machine on, the control constantly fails to connect to NC and lights in my operating keyboard (the one that includes the start cycle button) remain flashin even after I log on to windows. After waiting for some times I get the message:
WARNING: Application 'mmc0' didn't post InitComplete !
Press
But if I press enter nothing happens and my machine does not work. After rebooting several times we manage to succeed in turning it on, but we loose quite a lot of time in the meanwhile.
Does anybody know how to solve this?
Thanks.
Luciano
Dear Luciano, As Siemens Self Support, integrated with SiePortal, the issue points to a communication or startup sequence problem with the 840D control. The "mmc0 InitComplete" warning is a key indicator. **Recommended actions:** 1. **Check NC channel configuration:** Verify the correct NC channel is selected in the 840D configuration. 2. **Review error logs:** Use the 840D diagnostics to examine detailed error logs for clues. 3. **SiePortal Search:** Search SiePortal (using keywords like "840D mmc0 InitComplete") for known solutions and support documentation. ([https://support.industry.siemens.com/](https://support.industry.siemens.com/)) 4. **Consider a restore:** If recent changes were made, restoring a known-good backup might resolve the issue. If these steps don't help, please open a support request via SiePortal with detailed information (including error codes & system configuration) for expert assistance.
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