Question about Canon Printers & Copiers
This has happened a couple of times to me and usually it's one of two or three causes.
1. If you have a fused plug (as we have in the UK) check the fuse in your plug and try a different lead
2. If you're still under warranty I would definitely recommend getting it warranty serviced!
3. If not under warranty and you're uncomfortable with taking the unit apart I'd recommend contacting a local repair center.
4. If 2 & 3 don't apply the one thing I've found to work is to remove and disconnect the internal power pack module from the printer internal wiring and then reconnect it again. This seems to reset a breaker in the power pack (sometimes) and allow you to re-use the printer.
The problem with 3. is that it requires a service manual to work out how the module can be released and you would need to be confident in taking the case apart in some areas to get to the release. At present I haven't been able to locate the manual for the MX850 but the MP830 may be similar enough to handle the job.
Anyway, this fix has saved three out of four Canon printers for me and the MX850 being as expensive as it is it may well be worth the attempt.
Hope that helps.
Posted on Feb 18, 2009
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