EPSON AcuLaser C1900/AcuLaser C900 Revision B
Operating Principles Mechanism Overview 91
Note "*1": 4.5k cartridge: Up to 6000 pages (A4size) / print ratio less than 5%. 
1.5k cartridge: Up to 2000 pages (A4size) / print ratio less than 5%.
Fuser Unit
Presence None
“Abnormal warm-up” error 
occurs when it is not installed
New product None
When new product installed:
Performs counter reset from 
controller
Insertion when 
powering on
None
Amount 
consumed
Near end value is not set for 
engine
Near end
Near end value is not set for 
engine
Controller sets near end value
End
End value is not set for 
engine
Second Transfer 
Roll
Presence None
(By service personnel)
New product None
Insertion when 
powering on
None
Amount 
consumed
None
Near end None
End None
Table 2-3. Various Sensors (continued)
Unit
Detecting 
matter
Detecting method Remark