Ricoh M052 Service Manual page 398

Printer Service Mode
1001 Bit Switch
003 Bit Switch 3
bit 0 DFU
bit 1 DFU
bit 2
[PCL5e/c]: Legacy HP compatibility
Enable: Uses the same left margin as older HP models such as
HP4000/HP8000.
In other words, the left margin defined in the job (usually "<ESC>*r0A")
will be changed to "<ESC>*r1A"
bit 3 DFU
bit 4 DFU
bit 5 DFU
bit 6 DFU
bit 7 DFU
M052/M053/M054
0
0: Disable
5-176
1
- -
- -
1: Enable
- -
- -
- -
- -
- -
SM