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E840 is an error detection to the fixing inlet home position sensor.
PS63 (Fixing Inlet sensor) and PS66 (Fixing Inlet HP sensor)
may be caused by a poor connection on the front door switch. Try inspecting & re-seating the connection at the front door open/close switch=
++ make sure the front door is not vibrating away from the front door open/close switch (MSW7).
The door Magnet Action Catch may not properly be holding the door closed.
++ if paper is stuck in unit 1 frame side connector you might get a E840. If no paper is found in the connector check the connector for damage or cracks. Frame side connector assembly (FM2-5091-000). https://www.instantprintersupport.com/canon-printer-support
If light stays on when fully closed, door switch needs replacement, easily removed. Short term fix, disconnect the switch and tape the two spades together. Warning! Dryer will run even with door open.
Hi, I think you are right about the door switch. You may have a bad switch. If that doesn't fix it the board maybe at fault. Replace the door switch first. Good luck.
I just solved a similar problem with the right rear pax window by replacing the rocker switch..You don't need to take the panel off, just remove the cover on the front of the arm rest where the switch resides...Good luck. New switch is about $90.
On my 05 Relay I scratched the oxidation off of the switch heads and the contact plates on the door pillar. Worked for me.
Another fix I've read about is to take out and put back the PSD fuse. Then open and close the doors twice (with power button) for the computer to relearn the positions.
have you checked the all the doors? if the fault is only with 1 door look for the "push" switch in the frame of the door, tp fix remove switch and earth lead going to switch, that should fix it, if all doors the feed to light from doors is defective check for a bad contact in light switch on unit, there should be 3 positions
one position fully off
2nd position turn on manualy ( this over rides the door functions)
The door switches are built in the latches on each of the doors, they are pron to sticking, leaving the security module to beleive the door is open.
The simple fix is to spray a generous amount of WD40 on, in, and around the door latches, then opening and closing the door a few times. I would start with the passenger door as`this is likely the culprit. do the rest of the latches as a prevenitive measure.
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