AF-2060 W/SC 555

[T911]

this one is tripping a 555 code every 2 to 3 days i reset it and it pops the 552 code wich is the middle stat. I checked the ratings and all three of the stats are 152c but on the plate they read 211 and 192c. I ordered the 192 and 211 stats and replaced them but same deal with the 555 code. Is there a bulletin on this one, maybe a firmware upgrade. Why are there 152's in this one and not the correct ones from the parts list. Any ideas appreciated. Thanks t

[totoro]

In my experience with Ricohs the 555 & 552 are caused by the thermistors being dirty or bad. I usually clean them once then change them both if the problem reoccurs. I don't know about the thermostats ratings on this model. Good luck.

[Scott_Lewis]

I've got a dozen or so MP5500 that between them give me an SC555 about once every three to four weeks. Then, just recently, I got one that is throwing the code twice a week. I've set AOF to off and haven't had one in the past two weeks.

Personally, I think the Ricoh machines have a software bug that screws up the temp rise timing/tests. These are new machines, with the latest thermistors and clean thermistors. I've heard of an issue with the rear/blind connector. Will be looking into this last machine again in the near future to confirm my suspicions.

[Davven]

I've got a dozen or so MP5500 that between them give me an SC555 about once every three to four weeks. Then, just recently, I got one that is throwing the code twice a week. I've set AOF to off and haven't had one in the past two weeks.

Personally, I think the Ricoh machines have a software bug that screws up the temp rise timing/tests. These are new machines, with the latest thermistors and clean thermistors. I've heard of an issue with the rear/blind connector. Will be looking into this last machine again in the near future to confirm my suspicions.

Whait a minute, where do you find AOF off.
I have had SC555 today on an mp5500 but I reset the machine in copy sp mode and ordered thermistors. But bad connection, fusing lamp can also cause the code.

[gernah]

Whait a minute, where do you find AOF off.
I have had SC555 today on an mp5500 but I reset the machine in copy sp mode and ordered thermistors. But bad connection, fusing lamp can also cause the code.

yes sir fusing lamp can cause error also but you must start first to the nearest possible cause.like thermostat as what i read in MB they modified the thermostat into 192 degres and 211 degres and to my experience i have encountered pressure roller shafting is worn out so it makes gap to thermistor and the thermostat open because of thermistor you check every thing and you replace new thermostat into new part no.

[imaginemoko]

Martini C2
AW11 0040 Thermostat: 192C
AW11 0052 Thermostat: 211C

can be also cause of Thermistor uncontact to hot roller due to paper or toner dust... or hot roller coating already worn out

Good Luck....

[Scott_Lewis]

Whait a minute, where do you find AOF off.
I have had SC555 today on an mp5500 but I reset the machine in copy sp mode and ordered thermistors. But bad connection, fusing lamp can also cause the code.

I think I know about all of the 'official' causes of the code. When all else fails .........

Besides, after 20 years of debugging embedded software I have a healthy skepticism for 'bug free' software. It is a rare bit of software that is truly bug free.

[zyqwiz]

The modified thermostats have got nothing to do with the temperature rating - the original ones generate electrical noise which causes the SC555 to come up. Change the thermistors and thermostats together as a set;

Thermostats
1x AW110066
2x AW110064

Thermistors
1x AW100085
1x AW100109

[tcs04]

The modified thermostats have got nothing to do with the temperature rating - the original ones generate electrical noise which causes the SC555 to come up. Change the thermistors and thermostats together as a set;

Thermostats
1x AW110066
2x AW110064

Thermistors
1x AW100085
1x AW100109

Noise? RTB?? (To lazy to look)

[tcs04]

The modified thermostats have got nothing to do with the temperature rating - the original ones generate electrical noise which causes the SC555 to come up. Change the thermistors and thermostats together as a set;

Thermostats
1x AW110066
2x AW110064

Thermistors
1x AW100085
1x AW100109

OK!

I DID look..... RTB21 (Attached)

[tcs04]

Whait a minute, where do you find AOF off.
I have had SC555 today on an mp5500 but I reset the machine in copy sp mode and ordered thermistors. But bad connection, fusing lamp can also cause the code.

Re AOF

See attached (TimerSettings / Auto Off Timer)

[Davven]

Re AOF

See attached (TimerSettings / Auto Off Timer)

Ok that simple, I shall test this on our machine and see if the code dissapear.

[dckm]

Put the update thermisters in, and separate the fuser lamp wire in the rear of the machine. I think we are speaking about the B140 series, right. Thermister is AW10-0108, and 0109

[Shadow1]

I had a machine where the insulation had worn off one of the lamp wires because some tech (possibly me) didn't route the wires carefully. It would intermittently short causing the lamp to come on and overheat. I also had one where the rear thermistor got folded down and was contacting the hot roller backwards - as fragile as they are it had to be when it was installed or it would have been destroyed.
Mostly what I see is buildup on the thermistors, or rarely they are bent slightly and not contacting the heat roller good enough.
I also see a lot of 555's after a good thunderstorm. The codes almost always reset, so nothing wrong with the machine, just a CPU crash - hook up a line monitor if your office has one.

[tungnhung]

Martini C2
AW11 0040 Thermostat: 192C
AW11 0052 Thermostat: 211C