Ricoh C231 Service Manual page 277

ESSENTIAL DIFFERENCES BETWEEN THE C237 AND C231 MODELS
No. Item
10 New SC and SP
numbers
SM
Remarks
Several SC codes, SP numbers, and input check
codes were changed.
SC code:
E-21 Paper exit timing sensor remains off
E-22 2nd feed timing sensor remains off
E-23 Master eject position sensor remains off
E-24 Feed start timing sensor remains off
SP number:
No. 14 Not used for the C237 model
No. 17 Not used for the C237 model
No. 18 Master Type
No. 19 Not used for the C237 model
No. 125 Auto Energy Saving
Input check:
Code 51 Not used for the C237 model
Refer to the service tables section for details.
1-3 C231/C237/C238