Ricoh Aficio 220 Service Manual page 321

OTHERS
1.5 OTHERS
1.5.1 SC630 [RDS COMMUNICATION ERROR]
Frequent occurrence of SC630 indicates a problem in the customer's
communication line or line adapter. To maintain the communications environment
in good working order, it is necessary to contact planned inspections periodically.
1.5.2 PM PROCEDURE OR OTHER MAINTENANCE
Before beginning PM or other maintenance procedures, SP5-817-1 should be set
to "1". This will disable the RDS function. When maintenance is completed, SP5-
817-2 should be set to "1". This will re-enable the RDS function.
NOTE: The RDS function will remain disabled for four hours. Therefore, if
maintenance for longer than four hours is required, SP5-817-1 should be
set to "1" again to disable RDS.
APPENDIX-6
30 November 1999