Trigger 37
Printer Guru
- Joined
- Dec 23, 2006
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Hope someone has seen this an knows what the problem is. I'm working on a MP730 printer that had the famous "Double Feed" problem where the paper feed mechanism gears got out of sync. I've fixed this problem on other printers before using the Product Service Bulliten from Canon. I'm sure I reset the gears to the correct position. The problem with working on MP730 or any all in One printer is that once you think you have fixed the problem, you don't really know until you re-assembly the entire printer. That is the only way to test it. This takes re-assembly of about 15 different parts, 19 cables, 24 screws, and a lot of patients.
However, with this printer as soon as I got it back together, the power on sequence was great and it came ready with a good green light, but as soon as I try and print anything, it produces an error, "Load Paper". It really never even tired to feed paper even though the internal mechanism did some cycling. My question is,.."Is there a separate Paper Sensor that could be broken, as this printer things there is really no paper in the document feeder, and clearly there is. Whatever original failure or jam that caused the gears to get out of whack could have also messed up the paper position detector. I see on the wiring diagram that there is a paper sensor, but I have never found it.
Any suggestions would be greatly appreciated. If we can get an answer to this, it should help many other people that ever get this kind of error. I say this because the complete carriage asm for the MP730 is identical to the i550, i560, series. The MP730 even uses the printhead from the i560. The paper feed mechanism is identical. My real problem is taking one of these guys apart takes a lot of time and I want to know what to look for as I remove piece by piece. I searched the Canon FAQ for this problem and the answer I got was,..."Add some paper".
However, with this printer as soon as I got it back together, the power on sequence was great and it came ready with a good green light, but as soon as I try and print anything, it produces an error, "Load Paper". It really never even tired to feed paper even though the internal mechanism did some cycling. My question is,.."Is there a separate Paper Sensor that could be broken, as this printer things there is really no paper in the document feeder, and clearly there is. Whatever original failure or jam that caused the gears to get out of whack could have also messed up the paper position detector. I see on the wiring diagram that there is a paper sensor, but I have never found it.
Any suggestions would be greatly appreciated. If we can get an answer to this, it should help many other people that ever get this kind of error. I say this because the complete carriage asm for the MP730 is identical to the i550, i560, series. The MP730 even uses the printhead from the i560. The paper feed mechanism is identical. My real problem is taking one of these guys apart takes a lot of time and I want to know what to look for as I remove piece by piece. I searched the Canon FAQ for this problem and the answer I got was,..."Add some paper".