Ricoh C211 - Service Program Table; How to Access I;O Check Mode

4. SERVICE PROGRAM TABLE:
4.1 HOW TO ACCESS I/O CHECK MODE
1. Turn on the main switch while holding down the Print Start key, Stop key,
and Clear key.
2. Press the Memory/Class key to select either "Input" or "Output" mode.
Memory indicator "1" Input
Memory Indicator "0" Output
SM 4-9 C224