SC550 Error. Ricoh MP 6500. Cleared Parts Exceding Target list. Reset 1902-001 on Copy SP. Still get SC 550 after power-up. ...Red "alert" light on, and red light on near "printer" button.

Thermistor failure.

https://www.google.com/search?q=Ricoh+Aficio+MP-6500.+Error+message+SC+551

..

Reseting SC 543 error code on Ricoh copier

Press CLEAR MODE(yellow) key,
Press 1 , 0 , 7
Press and hold down CLEAR/STOP (red) key for more 5 sec.
Press in the SP Mode( on the touch pane)

Go to sp5810 and reset SC code

Open the front door turn OFF the power main switch, and turn it ON

Engine startup error
SC670
1. Engine does not respond within 30 sec after power on.
2. Engine down detected suddenly during power on and warm up.

IBCU installation incorrect
IBCU defective
Sudden communication reset
occurred between the IBCU and the Controller

You should be able to reset it by powering the copier off completely with the switch on the front, not the control panel, wait 15 -30 seconds, and power it back up again.

sc582 is an inverter error. The coil that heats the fuser may be bad, or there may be a bad connection somewhere. If you go into SP mode and execute SP 5810 to reset the fuser, see if the code comes back. If it does, have a Ricoh technician check the IH coil and the connections for it.

The Error Code SC542 or Sc546 could be a caused by a few reasons. There is a temperature problem with the fuser unit, the roller thermistor is bad, or the BCU Board is bad.
1 metode to reset Ricoh Error code sc542:
To clear the code:
Hit the yellow "Clear Modes" key
Press 107 on the number pad
Press and hold the "Clear Stop" for 10 seconds until you get a new screen ...
Press the "Copy SP" Button on the display
Open the front door
Turn front left power switch off and on
Shut the door
The error code is now cleared.
reset Ricoh Error code sc542:
To Enter and Exit the SP Mode
1. Press yellow "Clear Modes" key .
2. On the operation panel keypad, press 107 number
3. Hold down red "Clear" key more than 10 seconds.
The Copy SP is displayed.
4. Press "Copy SP" and go to the code SP5810, press "Execute"
5. To exit the SP mode, just press Exit in the upper right corner of the SP mode
screen. Power switch off and on and the error code is now cleared.


Hope this his helps, thanks for using fixya.

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/edwy_1a56970cf1ea4620

That service code SC550 normaly is a fuser web end error, you must replace the web and reset the % in 1.902 to "0". But i dont think the Ricoh aficio 450 have a fuser web. does this SC550 coming from your Aficio 450?

sc 541 is a fuser error. you have to reset the code. here are the steps to follow.
press clear mode button once, clear mode button is the yellow one
press 107
press and hold clear/stop red button until you see the screen changes to copy sp mode written.
press copy sp on the screen and off and on the machine
it should reset the code.

there is no sc 555 on those machines only sc 550 and that relates to what is called a fuser web.It does need to be changed but you can reset it by pressing the following in order

1- yellow clear key
2- number 1
3- number 0
4- number 7
5- press and hold down the orange clear/stop key for 5-10 seconds.
the screen changes
select copy sp
select sp 1
scroll down to SP1902 001 and select
reset that value to 0 and select enter
switch machine off and on and that should get you going for now.
Let me know

return SP1-902-1 to 0. Then, the SC will
be cleared.