Ricoh D037 Service Manual page 319

sheets enclosed. You can find it under the jammed paper removal decal.)
DFU: Design/Factory Use only
Do not touch these SP modes in the field.
A sharp (#) to the right hand side of the mode number column means that the main switch
must be turned off and on to effect the setting change.
An asterisk (*) to the right hand side of the mode number column means that this mode is
stored in the NVRAM. If you do a RAM clear, this SP mode will be reset to the default value.
"ENG" and "CTL" show which NVRAM contains the data.
ENG: NVRAM on the BCU board
CTL: NVRAM on the controller board
The settings of each SP mode are explained in the right-hand column of the SP table in the
following way.
[Adjustable range / Default setting / Step] Alphanumeric
If "Alphanumeric" is written to the right of the bracket as shown above, the setting
of the SP mode shows on the screen using alphanumeric characters instead of
only numbers. However, the settings in the bracket in the SP mode table are
explained by using only the numbers.
SSP: This denotes a "Special Service Program" mode setting.
SM
Service Program Mode
5-7 D037/D038/D040/D041