SC 552 AFICIO MP 5500

[hotmailpapa]

aficio mp 5500 keeps throwing sc 552 on startup. when i cheat the doors i realise the lamps do not come on.
i have changed the three lamps and also the two thermistors. i am really going crazy. please help.
Thank you.

[TonerMunkeh]

Re: SC 552 AFICIO MP 5500

Have any of the thermostats on top of the fuser jumped?

[hotmailpapa]

Re: SC 552 AFICIO MP 5500

so far they are all intact.

[davel]

Re: SC 552 AFICIO MP 5500

Have you checked continuity with a meter.

[keithxxiii]

Re: SC 552 AFICIO MP 5500

We had this issue before and noticed that the connector for the whole fusing/exit assembly has a small paper that obstructs it. It was caused by a paper jam that the customer didn't remove properly.

[hotmailpapa]

Re: SC 552 AFICIO MP 5500

thanks i have checked all the connectors and theres not obstruction. the rollers do not also turn at all. no visible activitity in the fuser section.

[Phil B.]

Re: SC 552 AFICIO MP 5500

thanks i have checked all the connectors and theres not obstruction. the rollers do not also turn at all. no visible activitity in the fuser section.

did you go and clear the codes in SM after replacing parts?

[hotmailpapa]

Re: SC 552 AFICIO MP 5500

We had this issue before and noticed that the connector for the whole fusing/exit assembly has a small paper that obstructs it. It was caused by a paper jam that the customer didn't remove properly.

did you go and clear the codes in SM after replacing parts?

I just entered service mode and restarted the machine? do i need to go further by entering numbers?

[Phil B.]

Re: SC 552 AFICIO MP 5500

I just entered service mode and restarted the machine? do i need to go further by entering numbers?

look in your manual... find the RESET ERROR CODE SP mode... reset... reboot unit.

just entering and exiting SM will not accomplish the task at hand.

[slimslob]

Re: SC 552 AFICIO MP 5500

I have encountered bad connector blocks. When the fusing unit is installed, one or more pins will push back out of the block instead of making contact.

Also, since the error is a rear thermistor error, check the harness for that thermistor.

[hotmailpapa]

Re: SC 552 AFICIO MP 5500

look in your manual... find the RESET ERROR CODE SP mode... reset... reboot unit.

just entering and exiting SM will not accomplish the task at hand.

i did a 5801 002 and rebooted. still nothing

[slimslob]

Re: SC 552 AFICIO MP 5500

i did a 5801 002 and rebooted. still nothing

Until you identified and correct the exact cause of the problem, 5801 will not help. It may clear the code but the machine will immediately code again. When you cycle power, open the front door before you turn power back on. This will prevent the engine from starting which prevent coding again. If the code is still there, it was not cleared. Enter SP mode with the door still open and check the temperature of both thermistors. They should both be in the mid to upper 20s. If one is 0, negative or extremely high, there is a problem involving that thermistor.

[hotmailpapa]

Re: SC 552 AFICIO MP 5500

Until you identified and correct the exact cause of the problem, 5801 will not help. It may clear the code but the machine will immediately code again. When you cycle power, open the front door before you turn power back on. This will prevent the engine from starting which prevent coding again. If the code is still there, it was not cleared. Enter SP mode with the door still open and check the temperature of both thermistors. They should both be in the mid to upper 20s. If one is 0, negative or extremely high, there is a problem involving that thermistor.

Thanks slimslob, i have opened the doors and cleared the error. screen was error free for a few seconds apparently waiting for fuser to warm up. then after about 30.40 seconds bam!! sc 552.

so i checked the thermistor temperature and they both alternate between 17 -19.

i think the main issue stems from the fact that the fuser unit does not kick in or move at all. rollers do not turn and the new lamps i replace do not light up.. any advice would be appreciated thanks everyone. am still here after so many hours.

[slimslob]

Re: SC 552 AFICIO MP 5500

Thanks slimslob, i have opened the doors and cleared the error. screen was error free for a few seconds apparently waiting for fuser to warm up. then after about 30.40 seconds bam!! sc 552.

so i checked the thermistor temperature and they both alternate between 17 -19.

i think the main issue stems from the fact that the fuser unit does not kick in or move at all. rollers do not turn and the new lamps i replace do not light up.. any advice would be appreciated thanks everyone. am still here after so many hours.

Both halves of the fusing connector, power supply Triacs , wire harness from PSU to connector and lamp wiring on fusing. You have an open somewhere going to the lamps.

[fbkhan3]

Re: SC 552 AFICIO MP 5500

Recently had the same issue with MP6500, replacement of the (IOB) Ass'y NO B2475128 was the fix and it took me a day to figure it out.
you can swap one if you have one on hand.

Note: Be careful with Dip switch setting when replaced.

Regard's