EPSON AcuLaser C1900/AcuLaser C900 Revision B
Disassembly and Assembly Printer Main Parts Disassembly and Assembly 198
4.5.17  Printer Head Unit (PH)
1.
Remove the Upper Front Cover. (p.177)
2.
Remove the Top Cover. (p.177)
3.
Remove the Rear Cover. (p.178)
4.
Remove the Right Door. (p.180)
5.
Remove the Front Cover. (p.179)
6. Remove the Laser Lens Cover. (1 screw)
(See 
“Figure 4-49 (p.198)”) 
Figure 4-49. Laser Lens Cover Removal
7. Remove the two screws securing the Drum Unit Slide Cover and remove it from the 
fixed position. Then turn over the cover and disconnect the three sets of harness from 
the terminals on the back, and take out the cover. (See 
“Figure 4-50 (p.198)”) 
Figure 4-50. Drum Unit Slide Cover Removal
C A U T I O N
Do not touch the terminals (copper) on the back of the Drum Unit 
Slide Cover with your bare hand. (To avoid loss of continuity caused 
by corrosion)