Ricoh D129 Service Manual page 463

Main SP Tables-9
1001 Bit Switch
004 Bit Switch 4
bit 0 DFU
bit 1 DFU
bit 2 DFU
bit 3 IPDS print-side reversal
Enable: Increases printing speed but simplex pages may be printed on the
back side of the sheet.
bit 4 DFU
bit 5 DFU
bit 6 DFU
bit 7 DFU
D129/D130
0
0: Disable
5-204
1
- -
- -
- -
1: Enable
- -
- -
- -
- -
SM