Ricoh D124 Detailed Descriptions Manual page 91

The following SP codes can be used to adjust the operation of the paper transport fan
by changing the duty levels.
SP1956-001.
 Use this SP to review the current duty settings.
SP1955-001.
 Adjusts fan duty in the range of ±20% for all duty phases. The firmware checks the
current fan operation setting and then uses a lookup table to fetch the specified
setting (the percentage to be added to the current operation level.)
 The optimum duty settings for each paper size and type are done at the factory
before the machine is shipped.
SP1955-002 to 010
 Adjusts fan duty in the range of ±20% for the duty phases of different types of
paper. The firmware checks the current fan operation setting of the motor for the
selected paper type, and then uses a lookup table to fetch the specified setting
(the percentage to be added to the current operation level.)
 It is important to remember that if an adjustment is done with this SP code for a
particular paper type, it will be added to any change previously specified with
SP1955-001.
Detailed Descriptions 85 D124