No Ink Cartridge; Maintenance Request; Fatal Errors - Epson Stylus COLOR 440 Service Manual

EPSON Stylus COLOR 440, 640, and 740

1.5.4 No Ink Cartridge

The following can be reasons for the printer to indicate a No Ink
Cartridge error:
1. The printer is being turned on for the first time. This is a normal
condition, and the printer clears the error state as soon as an ink
cartridge is installed.
2. Ink cartridge replacement is performed incorrectly. This error may
occur if the carriage is moved during the cartridge replacement
procedure, or if the carriage returns to the home position before the
cartridge is installed. When ink cartridge replacement is performed
again correctly, the printer clears the error condition.
3. There is a problem with the carriage sensor or with the printer itself.
If the error occurs when the ink cartridge has been installed
correctly, or if the printer sometimes prints normally and sometimes
indicates a No Ink Cartridge error, the CR sensor or printer may
need to be repaired.

1.5.5 Maintenance Request

When the total quantity of ink released by cleaning and flushing reaches
the threshold value, a maintenance request error occurs and the printer
stops printing. You need to replace the waste ink pad in the printer
case. A printer counter monitors the amount of ink that has been
absorbed by the waste ink pad. The counter uses a point system that
corresponds to the amount of ink that has been used. The maximum
capacity of the waste ink pad is set at the following maximum counter
points :
Printer
EPSON Stylus COLOR 440
EPSON Stylus COLOR 640
EPSON Stylus COLOR 740
Maximum Counter Points
21000
19800
40900
Since 1 counter point equals 0.02 ml of ink, ink capacity is set at the
following:
Printer
EPSON Stylus COLOR 440
EPSON Stylus COLOR 640
EPSON Stylus COLOR 740
C A U T I O N
When you print the A4 nozzle check pattern after
completing repairs, the printout shows you the current
value of the total ink counter and whether the ink is
discharging properly from all the nozzles. Make sure
that the value of the total ink counter is acceptable. If
the value is too high (if it is close to or greater than the
maximum value), it may be necessary to clear the
EEPROM and replace the waste ink pad.

1.5.6 Fatal Errors

The following are fatal errors:


Carriage Control Error: This error may be caused by a misaligned
carriage guide shaft, a home position sensor malfunction, a timing
belt tension malfunction, not enough lubricant on the carriage guide
shaft, or other problems.


CG Access Error: This error occurs if the carriage does not move to
the ink cartridge replacement position during the replacement
sequence.
Chapter 1 Product Description
Maximum Ink Capacity
420 ml
396 ml
818 ml
28