Ricoh D009 Service Manual page 1086

Paper Size Detection
*3: Detects either LT LEF or A4 LEF, depending on the setting of SP5-181-6 or 10.
*4: Detects either Exe LEF or B5 LEF, depending on the setting of SP5-181-9 or
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The machine disables paper feed from a tray if the paper size cannot be detected (if the
paper size actuator is broken or no tray is installed).
For non-standard paper sizes, if they are not visible on the user tool screen for selecting
paper sizes, then set SP 5-112 to 1. If the user selects one of these sizes, auto paper size
selection is disabled.
D351 12 SM