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I think you will need to reprogram not reset your unit. If the units built-in you probably need to see a dealer. If its aftermarket maybe you can find the manuel, wait for it.......on the internet
clicking noise could be blower motor bearing failure or blower motor fan work itself loose.you can fix.removing lower instrument cover to get to blower motor.you need turn off radio first to keep from losing code then turn off ignition remove keys.you need to disarm airbags by disconnecting the negative battery cable wait 20 minutes before working under dash when done reconnect negative battery cable.when disconnecting negative battery probably have reprogram door locks.and the ECM has relearn memory. some times you have to reprogram radio also you can fix problem but many things has to be reprogram.if first time doing mechanic work best find good mechanic or let dealership fix.
Look carefully because it is a cassette on the bottom of your canon mx850... so the solution is: or you fill that cassette or you switch your canon (it is a button for that) to take the paper from the top...
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.
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