RICOH FT5832 ERROR CODE E-5 47

The fusing lamp stays on at full power for 70.0 seconds while in the stand-by condition after warm-up is completed.
Possible Causes
fusing thermistor defective or dirty
Clean or change.
shut on the copier, press clear modes(yellow button), 107, and then hold down clear/stop (orange button). Enter 5810 then # key then 1 #. Turn off the main power then power back on to clear the SC condition.
If it does not solve it, the problem can be in board AC drive PCB2.

meaning of E-1 error message

With the machine on, press clear modes(yellow button), 107, and then hold down clear/stop (red button). Enter 5810 then # key then 1 #. Turn off the main power then power back on. This code is a fuser lamp on condition. It should clear. If not reseat the fuser unit (gets hot), clear using above procedure and try again.