EPSON Stylus Photo R1900/R2880/R2000/R2000s/SC-P400 Series  Revision I
Maintenance  Overview  165
6.1.2.2  Maintenance Request
Waste ink is discharged to Waste Ink Pads via the Cap Unit. The printer has counter 
function that counts how much waste ink is held in the Waste Ink Pads and stores the 
value in the EEPROM as "Protection Counter A"  and "Protection Counter B" (home 
and non-home side). When the counter reaches the predetermined upper limit, the 
printer causes the Maintenance Request error to indicate that the Waste Ink Pads is 
nearly saturated.
 Protection Counters Upper Limit
 Timing for Replacing the Waste Ink Pads
 When the Protection Counter reaches the value shown above, a Maintenance 
Request is indicated.
 When servicing the printer, always check the Protection Counter using the 
Adjustment Program regardless of whether the Maintenance Request error has 
been indicated or not. If the counter is close to its upper limit shown above, 
replace the Waste Ink Pads and reset the counter to "0" with receiving prior 
approval from the user. This prevents the printer from causing the 
Maintenance Request error soon after it is returned to the user.
 Waste Ink Pads to be replaced
 After the Replacement 
Reset the Protection Counter (Refer to Chapter 5 Adjustment (p.139))
Waste Ink Counter Limits
Protection Counter A
21,500 (Stylus Photo R1900) 
22,500 (Stylus Photo R2880)
Protection Counter B 7,030
Table 6-1. List of Waste Ink Pads to be replaced
Parts name Qty. Reference Pages
POROUS PAD, INK EJ, LEFT, LOWER 1 4.4.8 Waste Ink Pad / 
Waste Ink Tube Left/ 
Right (p112)
POROUS PAD, INK EJ, LEFT, UPPER 1
POROUS PAD, INK EJ, RIGHT, LOWER 2
POROUS PAD, INK EJ, RIGHT, UPPER 1
POROUS PAD, INK EJECT, IS, LEFT 1
POROUS PAD, INK EJECT, IS, LOWER; FB 1
POROUS PAD, INK EJECT, IS, LOWER, LEFT 1
POROUS PAD, INK EJECT, TUBE; FA 1
POROUS PAD, INK EJECT, TUBE; FB 1
POROUS PAD, INK EJECT, THIS SIDE 1
POROUS PAD, PAPER GUIDE, INK EJECT, UPPER 1 4.4.14 Front Paper 
Guide / Paper EJ 
Roller / Front Paper 
Guide Pad Tray (p121)
POROUS PAD, PAPER GUIDE, INK EJECT, LEFT 1
POROUS PAD, PAPER GUIDE, INK EJECT, RIGHT 1