Micro Absorbing Operation; Carriage Lock Set; Carriage Lock Reset; Refresh Operation - Epson 4003353 Service Manual

2.4.1.15 Micro Absorbing Operation

When the cartridge is removed, it is possible fbr a small amount of air to fbrm small air bubbles
that can block the ink from the
of the printhead.
1. Performs the fail absorbing operath.
2. Perhms the micro absorbing operation.

2.4.1.16 Carriage Lock Set

off or is paused. This operation is performed when the carnage is in the ink system home position
and no paper is loaded.
1. Sets the carriage loclc

2.4.1.17 Carriage Lock Reset

This operation resets the carriage lock lever.
1. Resets the carriage lock.
2.4.1.18 Refresh
Operation
This operation prevents an increase in the viscosity of the ink inside the black head surface when
paper is being loaded or ejected When the blackhead is just on the color cap as paper is loaded or
performs the flushing operation at the blackhead only.
ejected,

2.4.1.19 Adjust Lever Operate Position Moving Sequence

This operation is performed when the Att and
printer is paused.
1. Releases the carriage lock (If paper is loaded, this operation is invalid.)
2. Moves the carriage to the adjust lever operate position.
3. PUtS the printer in pause mode. (When the Ah button is pressed or if 60 seconds elapses, the
carriage returns to the home
4. Moves the carriage to the flushing position and perfoms the flushing qwrati
5. Moves the
carriage to the
lock-)
2.4.2 Timer and Counter
EEPROM LE93C46 (IC12) on the main board stores certain counter and timer values that are used
for controlling the ink system operation.

Refresh Timer (Monochrome and CMY Head)

2.4.2.1
This timer prevents an increase in vismsity of the ink inside the nozzle. It counts every 2 seconds
during the printing operation. This timer has both the Rfl (Black head= every 2 secqnds) and Rf2
7
(color head = every seconds).
It resets when:
2-30
nozzle. This operation eliminates small air bubbles from the cavity
(Performed when
loading or ejecting paper)
buttons are pressed simultaneously while the
position automatically.)
home position. (If the paper is not in the printert sets the carriage
Rev. A