Ricoh D009 Service Manual page 237

The life of ID sensor or photo conductor
Shield glass dirty
360 D TD sensor (Vt) error 1
The following condition occurs thirty times consecutively during printing. Vt is
less than 0.5V or 4.8V or more
TD sensor disconnected
Harness between TD sensor and PCDU defective
Defective TD sensor.
372 D TD sensor adjustment error
Vts is less than 1.8V or 4.8V or more during TD sensor initialization.
Heat seal not removed from a new developer pack
TD harness sensor disconnected, loose or defective
TD sensor defective
Harness between TD sensor and drawer disconnected, defective
396 D Drum motor error
The machine detects a lock signal error from the drum motor for 2 seconds
after the drum motor turned on.
Overload on the motor
Defective drum motor
Defective harness
Defective IOB
SM 4-11
SC Tables: SC3xx
D009/D011/D012/D013