How do i fix module authentication has failed error sc 866 on Ricoh Mpc 3002

SC 672 is a controller error. So possible is tat the controller board is defective, in best case can be only the ram memory dimm's or the HDD but in most cases the controller board is dead.

http://www.copytechnet.com/forums/ricoh-savin-gestetner-lanier/117427-mpc-3502-sc-552-02-a.html

Software error 3: Undefined An error not controlled by the system occurred (the error does not come under any other SC code

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• NoiseRFID: Communication error • Communication error occurs when the RFID starts to communicate with the RFID receptor. • Retry of RFID communication fails three times after the machine has detected the RFID communication error.
The problem is Defective RFID reader and writer • Disconnected ASAP I/F • No memory chip on the toner cartridge • Noise

Press clear modes, then press1-0-7 and hold the clear/stop key. find counter reset and activate a reset of the fixing assembly.

sc 670 on ricoh MP 1600

Sc 491 straight from manual

High voltage power: Drum/ development bias output error
An error signal is detected for 0.2 seconds when charging the drum or
development.

High voltage leak

Broken harness

Defective drum unit or development unit

Defective high voltage supply unit

1. Check or replace the harness.
2. Replace the drum unit or paper transfer unit.
3. Replace the high voltage supply unit.

SC866 B SD Card Error 1: Confirmation
The machine detects an electronic license
error in the application on the SD card
inserted in the controller slot when the
machine is powered on.
The program stored on the SD card contains
electronic confirmation license data. If the
program does not contain this license data,
or if the result of the check reveals the
license data in the program on the SD card is
incorrect, then the checked program cannot
execute and this SC code is displayed.
• Required program missing or
incorrect
• Download the correct
program for this machine
onto the SD card.
SC867 B SD Card Error 2: SD Card Removal
The SD

HI

SC 868 - An error occured with the SD card.

Solutions -- SD card not inserted correctly,or is defective.
controller board defective.


Hope this helps you.