canon ir 550 e001 intermittent error

[Guest]

I have a Canon IR 550 that has an intermittent E001 error. I can clear the error a few times and then it will make copies for awhile. Then when it goes back into sleep mode and I wake it up again it will usually go back to an e001 error but not always. Is this a common sympton of a bad thermistor? What other things should I check out and how do I test. Any info would be great. Thanks.

[Zoren]

its a common thing to do, if you have new thermistor it is the best way to atleast isolate that problem..

i got the same error 001 a month ago w/iR6000 i just replaced TH 1&2 its ok upto now.....

[davidj7]

did you go to service mode and check the difference in temp between t1 & t2. Look for which one could be off and replace that one

[Zoren]

it is always best to replaced both TH 1&2 at the same time...thermistor is a fast moving s'parts. we at the service section doenst want to hear the user saying............

"why didn't you replaced both thermistor at the same time"....

and we dont like repeated service calls....

[banty]

E001

I have a Canon IR 550 that has an intermittent E001 error. I can clear the error a few times and then it will make copies for awhile. Then when it goes back into sleep mode and I wake it up again it will usually go back to an e001 error but not always. Is this a common sympton of a bad thermistor? What other things should I check out and how do I test. Any info would be great. Thanks.

Hi,
Kindly go in to service mode and check the display >analog, Is temp Cenre and End i.e., TH1 & 2 having differance more then 50*C? if yes check the pressure towards heat roller clean TH1 & 2 apply silicon oil ( a very little amount) Check it again by resetting error. If prob not solved replace TH1 & 2, if still problem arrive ( as it happens in many case), just shut clear the DC CON from CLEAR (in FUNCTION menu) and shut down the machine. Open back cover and disconnect all the connectors of DC control PCB, wait for 5-10 minutes, reconnect all the connectors and check it out, still problem arrive replace the Heat Roller> Replace the Heater Tubes.

Hope this will helpful to you.

-Mehul

[SteveO]

I had one years ago that did this after new fuser roller,lamps,and thermistors. It was actually the thermoswitch which i have never seen one go bad but it fixed it. Worth a try.

[banty]

No Thermoswitch

I had one years ago that did this after new fuser roller,lamps,and thermistors. It was actually the thermoswitch which i have never seen one go bad but it fixed it. Worth a try.

Hi,
It could be never a thermoswitch
'cause it is for the over heating protection ( just like a fuse). it has only 2 stage ON or OFF.

-banty

[Guest]

Hi,
It could be never a thermo switch
'cause it is for the over heating protection ( just like a fuse). it has only 2 stage ON or OFF.

-banty

I agree. If its the thermoswitch the machine would just shut off.
I've seen techs use thermistors from a Ir5000 causing issues like this one.
You can also check the terminal connectors that are on the fixing ass'y and in the rear inside area of the machine, sometimes paper get packed inside of those connectors causing weird problems, or you might have a bad DC. Here are the part #

FG6-8798-020-MAIN THERMISTOR ASSEMBLY
FH7-7464-000-SUB THERMISTOR ASSEMBLY

[SteveO]

Hi,
It could be never a thermoswitch
'cause it is for the over heating protection ( just like a fuse). it has only 2 stage ON or OFF.

-banty

I know it acts as a fuse. just telling you that i did have that problem once. I didn't believe it either but another tech told me to try it and fixed the problem. Have seen weirder things happen.

[mrfixit51]

Just my 2 cents worth...

it is always best to replaced both TH 1&2 at the same time...thermistor is a fast moving s'parts. we at the service section doenst want to hear the user saying............

"why didn't you replaced both thermistor at the same time"....

and we dont like repeated service calls....

I have to agree with Zoren, the travel back to the account, the cost in time to tear the fuser down again to put this part in, customer dissatisfaction, more than makes up for whatever small cost savings there is in replacing these parts singley. Take into account also the age of these machines, they are no spring chickens to be sure. Over the time these components have been basking in the glow of the fuser, they have been getting closer to their failure point. I replace these at every fuser rebuild.

Just my 2 cents worth...

[SteveO]

Just read a knowledgebase article on Canon's website. This problem sounds just like the one they described. The solution was to replace the IP PCB. Their description was intermittent E001 codes during a long run or first thing in the morning.

[Zoren]

field technicians are the best source of info when troubleshooting.... and these info's you get from manufacturers, it also came from different field technicians experienced.

regarding our topic intermittent fixing error code TH 1&2 is the common faulty coz it is the 1st to worn out very quickly...... if TH 1&2 doesnt work after replacement, then you can say its probably the fixing control board is defective.... of course, you have to tell your client (convinced) that electronics problems may vary on different occations on these type of errors....