We've received the new brackets and are starting to replace them as needed. I've had one Tech say that the new one looked the same as the old one, but he was on a new machine, possibly a MP6001. I've asked the other Techs to keep me informed.
On a slightly related note, there is a new bulletin (D062-003) just out on new retaining rings and HR bushings for the MP6001 series which I believe would go all the way back through the series. We've had lots of trouble with the retaining clip coming out of position allowing the HR bushing and bearing to move out and then the HR moves out of position.
Old # for ring B1404172, new # D0544175
Old # for bushing AE032026, new # AE032033
I had a MP6000 which burned me many times with this code. My solution worked and I haven't been back to that machine since (knock on wood).
Check the lamp connectors (females specifically). From the factory they split and are not making good connection. I took my tweaker and pinched them so they were tighter. Depending on which lamp connectors are loose, you will get either 555 (fror the one lamp) or 546 codes ( for the other lamps). When I cheated the front door and would play with the lamp connectors I could get the machine to pop those codes, that is how i knew those connectors were an issue.
Per Ricoh, disable the 'panel off timer':
1) User tools
2) System Settings
3) Timer settings
4) Panel off timer, turn to off.
Let me know if this works for you, because I worked diligently and it seemed to work for me.
We had allot of problems with this at one time. I found that the rear thermistor, mount would get out of position. Especially if was not used frequently. Heating and cooling causing bracket to move away from roller. My solution was to bend bracket until one piece of paper would firmly slide from under thermistor. Hope it helps
Just thought I might throw another idea in the mix.
Do any of the machines giving this code have ESA transformer or Enhanced Locked print installed on them. I have heard of an older version of ESA transformer client causing fuser codes. A newer version fixed the issue. A long shot but something to consider.
I've got about 12 of these at a govt installation. I was getting one or two calls a month for SC555's. I finally decided to try some t/s on one that was throwing the code every two or three days. I changed the AOF to off and the problem stopped. Went back a couple weeks later to turn it back on with the expectation that I would start getting the codes again. Hasn't come back since.
Go ahead and laugh. I just figured there was no way in hell that every one of those machines had bad thermistors. They all made the cutoff for the newer version thermistor.
I think there is a power/firmware issue going on here.
Nobody will laugh...AOF is a key for many problems related to fuser codes and not only. I had one weird jamming problem on a 4000 SP caused by damp paper (problem debated on this forum) and the fix was as simple as turning AOF off. Is still off since than I believe me or not I never received a call from the customer in months.
I tweaked the connectors on the front and rear side of the lamps. From the factory they are a bit loose. When I was testing them, I cheated the door and then wiggled the connectors and I would get codes. It seemed to help out my issue.
I work for Metro Sales Inc out of Owatonna. I currently live in Albert Lea, however. How is business up in the cities?