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Chapter 2   Operation of Diagnostic
Epson AcuLaser C2900N
Revision B
Confidential
Parameters for the Digital Output (DO) Test are as follows.
Code Component
DO-0,1,2 Main Motor
DO-5,6,7 Sub Motor
DO-a K Mode SOLENOID
DO-b,c Tray1 Feed SOLENOID
DO-d,e,f,10 Exit Motor
DO-12,13,14,15 Duplex Motor
DO-17,18,19,1a Tray2 Feeder Motor
DO-1e,1f Fan Motor
DO-21 Yellow Toner Motor
DO-23 Magenta Toner Motor 
DO-25 Cyan Toner Motor
DO-27 Black Toner Motor
DO-29 Regi Clutch
DO-2f Tray1 Feed SOLENOID
DO-31 Tray2 Feed SOLENOID
DO-33 Tray2 Turn Clutch
DO-35 Duplex Clutch
DO-3d Drum Erase Lamp K
DO-3f Drum Erase Lamp YMC