My copier is ricoh aficio 650 during it self test and worming time the message appear sc101 - 00

Question edited for clarity and correct order, 'make model problem'.

Error Codes > Ricoh > AP828 > Code SC829

PrintCopy .info https://printcopy.info > brand=Ricoh > code=SC829
Ricoh AP828 · Code: SC829 · Description: Self-diagnosis error: optional RAM [XXXX]: Detailed error code [0302] Composition error (Slot 0) The result of checking ...
Missing: 232 ‎' Must include: 232

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  Error Codes > Ricoh > Aficio 1027 > Code 829

  https://printcopy.info > brand=Ricoh > code=829
  Code: 829 ; Description: Self-diagnostic Error: Optional RAM The optional RAM returned an error during the self-diagnostic test. ; Causes: · Replace the optional ...

It means that something with the functionality of your device is not working properly. Take it for service.

Hi
I managed to find a list of Ricoh error codes with brief explanations of their causes here:
Ricoh copiers error code messages
This clearly identifies the problem as a laser motor problem - OR
Charge roller, HVT, or fuse FU5 (AFICIO 340, 350 series, 355, 450 series, and 455) - OR
SC-302-01, 02, 03, 04 Charge corona assembly Aficio 550/650
SC-303 Charge corona wire cleaner, disconnected or time out for printer.
All of these sound rather like an engineer requirement but you may be able to something with appropriate spares

I had the same problem after transit of copier. Try removing the yellow developer unit and give it a good shake. You may need to do it with the other units too.

The scanner home position sensor
does not detect the home position
during initialization.

Causes:

Scanner I/O board or SBU defective
• Scanner motor defective
• Harness between scanner I/O board
and scanner motor disconnected
• Scanner HP sensor defective
• Harness between SBU and HP sensor
disconnected
• Scanner wire, timing belt, pulley, or
carriage defective

820 Self-diagnostic error: CPU

Symptom:
• An unexpected exception or
interruption occurs during the self-
diagnostic test.
• An error is detected in the MBU.

Possible Cause:
• Defective controller
• Defective firmware
• Loose MBU jumper


Code 820
MBU error (The jumper is loose.)
Set the jumper (on the MBU) correctly.
The following codes are displayed:
• SC: 820
• code: 612
• detail: 40000000

for Ricoh Aficio 5560:
SC410 - Paper Separation Current Leak

TD sensor error test value abnormal the TD sensor output voltage is less than 0.5v or more than 5.0v after 10 consecutive times during copying the possible cause willbe TD sensor defective,TD sensor not connected or connector damaged ,poor connection between the TD sensor and the I/o board (IOB),I/O board (IOB)defective ,toner supply defective

Hello sir; SC101 means " exposure lamp out" you need replace one.

This is a software performance error; However it is most often caused by a deteriorating drum unit. There is no exact solution, but 9 times out of 10, a new drum unit, and fresh developer will solve it.
Outside of that, it is likely a board problem -possibly BICU