EPSON AcuLaser C1900/AcuLaser C900 Revision B
Disassembly and Assembly Duplex Unit Disassembly and Assembly 206
4.7  Duplex Unit Disassembly and Assembly
4.7.1  Duplex Unit Control Board (PWB-A)
1. Separate the Duplex Unit from the Printer.
2. Remove the Board Protection Cover. (2 screws)
(See 
“Figure 4-64 (p.206)”) 
3. Remove the Duplex Unit Control Board. (1 screw, 3 connectors)
(See 
“Figure 4-65 (p.206)”) 
4.7.2  Paper Feed Sensor
1. Separate the Duplex Unit from the Printer.
2.
Remove the Duplex Unit Control Board (PWB-A). (p.206)
3. Remove the Sensor Fixing Plate and then remove the Paper Feed Sensor. (1 connector)
(See 
“Figure 4-66 (p.206)”) 
Figure 4-64. Board Protection Cover Removal
Figure 4-65. Control Board (Duplex Unit) Removal
Figure 4-66. Paper Feed Sensor Removal