Cleaning Epson 740 printing heads :
As usual, I cannot be responsible for any damage to
your machines when you will experiment the following
I already wrote a method here,
but Georges Pechoux emails me another one. Here it is.
First of all, shutdown the machine, unplug it, remove the
paper off the sheet feeder and remove the cartridges.
The machine: two cruciform screws on the top (one on
left, the other one on right).
A classical cap is too short :-(
So we need a standard screwdriver or, as on the photo, a
Just open it and two new cruciform screws (fixing the
chassis) appear (yellow arrows).
Removing the chassis will help to slide the heads in the
middle of the machine.
We are just removing the head from its craddle...however,
leaving the craddle in place.
We have to open the hoods which maintain the cartridges
in place when they are on the machine.
Now detaching the lids. On the left (yellow arrows), the
lid is already freed from its support. On the right (blue
arrows), the lid still in place.
Both lids are now freed. But caution, do not force ! They
still are solidary from another axis.
We upturn them and disconnect them at their fixations
(see yellow arrows).
The yellow arrow points to the small nick within the
axis' hole. The blue one shows one axis's spur. Both the
nick and the spur must face each other to safely remove the
heads without damage. Last but not least, the white
arrow shows a screw we can immediately removed.
Whith the spur and the nick just facing each other, just
clucth the two arms simultaneously on both side (yellow
arrows) to remove the lid.
To obtain this.
It is more pratice to also remove the head's cover
support: just raise it until its spur just faces the nick
Performs the same operation on the other side.
...Same but cover away.
...and already ink on the fingers:-(
Yellow arrow points to a screw we can remove (if not yet
Blue one shows the axis which lock the printing head into
its craddle: must be removed from the right side.
Pins locking the head's support must be removed (yellow
and blue arrow): they are pins on both sides of the support
Remark: on the snapshot, cartridges cover's supports are
visible again. Well, after performing the whole operation, I
discover that it will be easier to do it without the
supports. So, at the very start of the manipulation, I
explained how to remove them, but I must confess I spend no
more time to change the images below. So, in all the
incoming images, forget these supports !
Slightly raise... to discover electronic cable...
...we have to remove (yellow arrow).
Now, we can remove the head by grasping it by the small
plastic part pointed by the yellow arrow. Blue one shows a
connector to unhook.
The head out of the machine, on its back but with the
connector still unplugged.
Removed parts: sure the "Georges Pechoux" method is
easier than the other one !
As usual, follow these instructions in reverse ordrer to
reassemble the machine.