EPSON AcuLaser C1900/AcuLaser C900 Revision B
Disassembly and Assembly Printer Main Parts Disassembly and Assembly 187
4.5.6  AIDC Sensor
1.
Remove the Upper Front Cover. (p.177)
2.
Remove the Top Cover. (p.177)
3.
Remove the Left Cover. (p.179)
4.
Remove the Power Supply Unit (PU). (p.186)
5. Remove the AIDC Sensor. (1 screw)
(See 
“Figure 4-24 (p.187)”) 
Figure 4-24. AIDC Sensor Removal