Canon C3220, E732 E733, when copying more then one sheet

[Hyksos]

I have an other weird problem (The other one is the fuser not getting hot fast enough in an other thread here)

The copier have the ADF, if I copy a single sheet, no problem, I can repeat it multiple time.

But as soon as I put 2 sheets or more in the adf it crash (black LCD screen) and eventually the error led come on.

It do it every single time, when it happen the 2 sheets are on the glass and the scan was completed, the print was starting, the sheet was moving, then everything stop, right before the sheet get to the transfert belt.

I have read that maybe it's a faulty fuse PCB?

Thanks for your help

[SCREWTAPE]

Your losing communication between the printer and the reader some how. The first thing is , make sure that the reader and printer are connected properly.
Other things to look at would be the reader controller, the interface board, or CCD unit . Make sure all cables are seated. as for the fuse, its a possibility.
DC Fuse PCB- FG3-3020-020.

[Hyksos]

I was able to get the same problem in print mode, happen only if I send large image.... everything else print without problem (Tried same image from PC and MAC, resizing the image fixed the crash...)

I'll check the cables later tonight, but I don't see how it can be it, why it work if I do a single copy or if I print smaller image...

[teckat]

I have an other weird problem (The other one is the fuser not getting hot fast enough in an other thread here)

The copier have the ADF, if I copy a single sheet, no problem, I can repeat it multiple time.

But as soon as I put 2 sheets or more in the adf it crash (black LCD screen) and eventually the error led come on.

It do it every single time, when it happen the 2 sheets are on the glass and the scan was completed, the print was starting, the sheet was moving, then everything stop, right before the sheet get to the transfert belt.

I have read that maybe it's a faulty fuse PCB?

Thanks for your help

Per Canon: communication error
Error codes of E732 and E733 are displayed, when copying off the glass or when using the DADF. The Control Panel would go blank and the processing data light would continue to blink. After a few minutes in this state; the copier was rebooted and the codes would resolve themselves, but would eventually return.

Workaround :
First, try re-seating all the connectors to the Reader Controller, Interface PCB, and DDI-S PCB. Next,
check for proper voltage to all three boards.
In this case, a defective DC Fuse PCB caused the error codes. An intermittent loss of voltage to the Reader Unit caused the machine to code out.

Note:
The part number for the DC Fuse PCB is FG3-3020-020.

Reseat the ribbon cables between the Reader Controller and the Interface PCB (FH2-6984-000 & FH2-6983-000. If the problem persists, replace the Reader Controller PCB (FG3-2570-000), and the Interface PCB (FM2-0036-000) at the same time.

If cable is loose or disconnected=
If the Reader is disconnected from the Printer a E732 code will result. Once the Reader is disconnected the logic on the MAIN-Controller is changed to a "0". The copier is now set up to be a Printer only, and will not recognize the Reader.
To correct this, you must enter service mode, COPIER>OPTION>BODY>W/SCNR and set that to "1". Then you must turn the copier off, then on.

[Hyksos]

I fixed the problem!!!

First I did check all the cable, they were all properly connected. But I was certain it was a power related problem, so I dismounted the whole power supply and checked all the solder in every PCB (4 PCB) with a magnifier looking for crack or bad solder.

I did found a dozen problematic solder that I remelted (most were probably ok, but I did remelt them to be certain, but 2 were pretty bad). Connected everything and put it back in the copier.

First power on, not a single error (Before that the copier needed 2-3 reset to be able to heat up to 190C), first test... multiple sheet in the adf and copy.... PASS, next I sent a HUGE image to print in 11x17 taking the whole sheet, PASS!!!

So it seem all the problem I had were related to the same defect!!

Although I don't recommend this route to anyone, you need to have good experience in soldering and lot of spare time, took me 4 hours in all.

[SCREWTAPE]

Nice fix. Great to hear you found another solution. Its something I would most certainly keep in mind if I run into something like this again myself.
Thanks for posting back.

[teckat]

I fixed the problem!!!

First I did check all the cable, they were all properly connected. But I was certain it was a power related problem, so I dismounted the whole power supply and checked all the solder in every PCB (4 PCB) with a magnifier looking for crack or bad solder.

I did found a dozen problematic solder that I remelted (most were probably ok, but I did remelt them to be certain, but 2 were pretty bad). Connected everything and put it back in the copier.

First power on, not a single error (Before that the copier needed 2-3 reset to be able to heat up to 190C), first test... multiple sheet in the adf and copy.... PASS, next I sent a HUGE image to print in 11x17 taking the whole sheet, PASS!!!

So it seem all the problem I had were related to the same defect!!

Although I don't recommend this route to anyone, you need to have good experience in soldering and lot of spare time, took me 4 hours in all.

Great Fix/what board or boards was it ??
u re melted & did not re solder ??> I hope u did not use over a 25 watt iron / if not those heated components could fail later/ how were the traces ??
How did this repair solve the Reader code and the Fuser code ???

[Hyksos]

Great Fix/what board or boards was it ??
u re melted & did not re solder ??> I hope u did not use over a 25 watt iron / if not those heated components could fail later/ how were the traces ??
How did this repair solve the Reader code and the Fuser code ???

This was on the fuse PCB, Heater PCB and both DC power supply PCB.

These PCB have no electronic chip at all, they have electric component and are soldered with high temperature solder, so a 25 watt iron wont be enough to melt it quick enough, I tested it with it first, I quickly switched to my 40W iron and it worked perfectly, the important thing is to not keep the iron too long on the solder (Take less then half a second), so the heat don't have time to heat the component too much.

I did not re solder because it was not needed, remelt was enough.

The bad solder were limiting the amount of ampere available to the whole copier, that's what made the fuser slow heating and the reader crash and all.

This is like a normal computer, when the power supply go bad some weird thing happen.