Epson 4003353 - Manual (Page 55)

Stylus Color Service Manual Operating Principles
No Ink Cartridge Mode:
1. Sets the LED to indicate no ink cartridge.
2. The printer enters the PAUSE status.
Note: The flushing operation is driven nozzles at 7.2 KHz, and is performed when the
carriage is stopped.
2.4.1.2 Cleaning Selection Mode
This operation cleans each nozzle to ensure that the nozzle fires and that no dots are skipped when
printing. This operation is performed by pressing the cleaning switch
+ Load/Eject or
Economy/Condensed) while the printer is in PAUSE status. Three different sequence of steps
can be performed depending on the value of the CL Counter K (see section 2.4.7.6), the value of the
CL counter KK, and how much printing has been done since the last cleaning.
■ (Normal Cleaning)
■ (Power Cleaning)
■ (Fail Cleaning)
CL I (Normal Cleaning):
1. If the carriage is not in the home position, moves the carriage to the home position.
2. If paper is in the printer, ejects the paper; if paper is not in the printer, releases the carriage lock.
3. Performs the home position seek.
4. Performs the wiping operation 1.
5. Sets the disengage gear (pump unit drive).
6. Absorbs the ink (micro absorption).
7. Releases the negative pressure.
8. Performs the interval micro absorbing operation.
9. Performs the fail absorption (including the pump release operation).
10. Performs the wiping operation 2 (including the flushing operation).
11. Moves the carriage to the home position.
12. Sets the carriage lock, and pauses the printer.
(Power Cleaning):
1. If the carriage is not in the home position, moves the carriage to the home position.
2. If the paper is in the printer, ejects the paper; if paper is not in the printer, releases the
carriage lock.
3. Performs the home position seek.
4. Performs the wiping operation 1.
5. Sets the disengage gear (pump unit drive).
6. Absorbs the ink. (Wets the surface of the nozzle plate.)
7. Releases the negative pressure.
8. Performs the fail absorption (including the pump release operation).
9. Performs the rubbing operation.
10. Sets the disengage gear (pump unit drive).
11. Absorbs
ink (high absorption).
12. Releases the negative pressure.
13. Performs the interval micro absorbing operation.
14. Performs the fail absorption (including the pump release operation).
15. Performs the wiping operation 2 (including the flushing operation).
16. Moves the carriage to the home position.
17. Sets the carriage lock, and pauses the printer.
(Fail Cleaning)
This operation applies only to the blackhead and is identical with the operation except that
step 6 is changed as follows:
6. Moves the carriage to the fail absorbing position and
the ink absorbing operation.
Rev. A 2-25