Ricoh JP5000 Service Manual page 70

DRUM
Drum Type Detection
There are also dip switches on the ink detection board. The settings depend on the
drum type in the following manner:
DPS901
Standard Drum
Optional Color
Drum
Optional A4
Drum
Not Used
Note: If the CPU detects that all dip switches are off, it assumes that there is no drum in the
machine.
-1 -2
ON ON
OFF ON
ON OFF
OFF OFF
2-42
1 July, 1998