Epson Stylus Pro 4900/Epson Stylus Pro 4910  Revision A
ADJUSTMENT  Ink Supply Related Checks and Adjustments  361
Confidential
4.12.5  ILS & CSIC Check
4.12.5.1  ILS Check
EXECUTION MODE
Serviceman Mode
PROCEDURE
1.  Turn the printer ON in the Serviceman Mode.
Turn the power ON while pressing [Menu  ] + [Paper Feed  ] + [OK].
2.  Start the Service Program and select ILS & CSIC Check.
3.  Select ILS Check on the ILS & CSIC Check screen.
4.  Click [Run].
The result will be displayed on the screen.
 When the result is NOT the same as the actual ink amount: 
The ILS (Ink Level Sensor) does not detect the ink out correctly. 
Replace the ink cartridge with a new one.
 When the result is the same as the actual ink amount: 
The ILS detects the ink out correctly but the ink consumption is not counted 
correctly.
Replace the ink cartridge with a new one.
NOTE: The ink consumption is not counted correctly if the power is shut off 
during Ink Charge or Cleaning. It makes a gap between the ink remaining 
level displayed on the LCD of the printer and the actual ink level in the 
cartridge.
5.  Click [Finish].
6.  Turn the printer OFF and finish the adjustment.
Figure 4-74.  [ILS & CSIC Check] Screen
C H E C K
P O I N T
Perform this check when the ink amount displayed on the LCD of 
the printer is not the same as the actual ink amount.