E000840-0000,please what those this code means and what is the solution if the copier just stop working

Ricoh 2510 copier error code 322 means bad LDB or bad Detector Board. To reset this error, please try the code:
Clear Mode along with 107+Clear/Stop and hold for 5s.

Code M2 means your photocopier machine require maintenance.In maintenance some old parts of your machine will be replaced with the new one and all this will be performed by technical services representative.

i looked to see if there was a user fix for this problem but there isn't. It sounds like the driver pcb board could be blown and or the fixing assembly needs replace.

please follow the instruction and you will reset the copier:
press the follow keys in order:
1. press the yellow key[c] (clear)
2. press 1-0-7 on the number pad
3.press and hold it pressed the red key [c] (stop)
4.When on the screen will appear other menu different from the usual turn off the machine from the main switch (the red switch) and then turn it on after 5 seconds.
Please answer do this is helpful for we to know if is needed some more information.

Hello sir; The error code you post out it's means "fuser pressure roller thermistor bad let's try to reset if don't work have to replace it;
Turn power off , press and hold down 0 and 8 while turn on the power, enter 400, press start,enter 3 ,press start, enter 0 press set or interupty. turn power off and back on again.

when ap code is coming add toner. when the toner is empty this code displays.

TRY THIS
access service mode .by depressing STOP- 00 --STOP- 0 -1
and than select counter, select trouble count and scroll untel you see what that cod means .
get back to me if you need more help

F means exposure lamp
Check either lamp or may be more dust???
Thenks

press buttons in the exact order, utility-meter count-stop-0-0-stop-0-1. you are in service mode. now you enter counter - reset counters, or trouble and see the meaning of C 0206, if I well remember it's a corona wire problem! you can either change the wire and reset the error code or, in case that it wont work, to measure the tension at wich the corona charges!, probably the first thing will do the job!!!

chnge toner cartridge