Need to clean inkjet heads on Epson 740

[Guest]

Archived from groups: comp.periphs.printers,alt.comp.periphs.printers,sci.electronics.repair,sci.electronics.equipment,sci.electronics.components (More info?)

"wylbur37" <wylbur37nospam@yahoo.com> wrote in message
news:8028c236.0411050509.287d0f5f@posting.google.com...
> I have an Epson 740 inkjet printer.
>
> After not using it for a while, I discovered that the inkjet nozzles
> were apparently clogged to the point where the "head cleaning routine"
> was of limited usefulness.
> The printouts show signs of missing lines and "bleeding fibers"
> indicating the presence of accumulated residue around the nozzles.
>
> I'd like to be able to free the print head carriage assembly
> so that I can wipe the front of the nozzles and clean them,
> but I can't find the right screws to remove.
>
> The Epson website has various manuals to download but they don't seem
> to have the one that I need. Their Product Information Guide on setup
> and testing (sc740_pg.pdf) mentions (on page 15,
> under Related Documentation) the "TM-SC467 Epson Stylus Color
> 440/640/740 Service Manual", but that publication is apparently
> nowhere to be found on their website.
>
> Can someone either
> (a) explain how to remove the print head assembly so the nozzles can be
> cleaned or
> (b) mention a website where the necessary documentation is available
> for download or
> (c) if you have the document, send me a copy via email as an attachment.
>
>
> Thanks for your help.

My original 600dpi by 1200dpi '600' model ran for 2 years with a cleaning
cycle needed only rarely. Cartridges refilled by syringe. Used litres of
ink. Scrapped it as the flex PCB to the head 'fatigued'.
My next '740' model (same as yours) used to clog up if left for more than 10
days. (finer nozzles but cartridges still syringe refillable) Forced to
become an expert on nozzle cleaning, most of the nozzles could usually be
cleared. Finally blocked up and stayed blocked so I scrapped it.
Last model was the 'C82'. 1000's by 1000's of dpi. Chipped, non refillable
cartridges, huge cartridge costs. Blocked after 7 days of non use. Managed a
month and numerous cleaning cycles before heads permenantly blocked. Usual
unclog methods failed, ended up trying pressurised hot ammonia through the
nozzles (caused the nozzle driver I.C to melt 🙂. Scrapped it.
Pi***d off with Epsons, bought a next to nothing cost HP 3650. Quality not
brilliant, software is shite but have had it 10 months with not a single
problem, it has yet to block up, has taken none of my time and best of all,
the original cartridges can still be refilled, so costs are near zero.
Moral of the story is that Epsom just don't know how to make high dpi
printers that work in the real world.
regards
john

 

[Guest]

Archived from groups: comp.periphs.printers,alt.comp.periphs.printers,sci.electronics.repair,sci.electronics.equipment,sci.electronics.components (More info?)

"john jardine" <john@jjdesigns.fsnet.co.uk> wrote in message
news:cmmln7$7df$1@newsg1.svr.pol.co.uk...

....
| Moral of the story is that Epsom just don't know how to make high dpi
| printers that work in the real world.

I believe the true moral is that Epson will do most anything to get you to
buy their ink carts, possibly including not making too great of a printer.
Still, my Stylus II is still running and I bought a lifetime's supply of
real Epson carts on eBay for pennies, so it's a toss up which gives up
first.

N

 

[Guest]

Archived from groups: comp.periphs.printers,alt.comp.periphs.printers,sci.electronics.repair,sci.electronics.equipment,sci.electronics.components (More info?)

"john jardine" <john@jjdesigns.fsnet.co.uk> wrote in message
news:cmmln7$7df$1@newsg1.svr.pol.co.uk...
>
> "wylbur37" <wylbur37nospam@yahoo.com> wrote in message
> news:8028c236.0411050509.287d0f5f@posting.google.com...
> > I have an Epson 740 inkjet printer.
> >
> > After not using it for a while, I discovered that the inkjet nozzles
> > were apparently clogged to the point where the "head cleaning
routine"
> > was of limited usefulness.
> > The printouts show signs of missing lines and "bleeding fibers"
> > indicating the presence of accumulated residue around the nozzles.
> >
> > I'd like to be able to free the print head carriage assembly
> > so that I can wipe the front of the nozzles and clean them,
> > but I can't find the right screws to remove.
> >
> > The Epson website has various manuals to download but they don't
seem
> > to have the one that I need. Their Product Information Guide on
setup
> > and testing (sc740_pg.pdf) mentions (on page 15,
> > under Related Documentation) the "TM-SC467 Epson Stylus Color
> > 440/640/740 Service Manual", but that publication is apparently
> > nowhere to be found on their website.
> >
> > Can someone either
> > (a) explain how to remove the print head assembly so the nozzles can
be
> > cleaned or
> > (b) mention a website where the necessary documentation is available
> > for download or
> > (c) if you have the document, send me a copy via email as an
attachment.
> >
> >
> > Thanks for your help.
>
> My original 600dpi by 1200dpi '600' model ran for 2 years with a
cleaning
> cycle needed only rarely. Cartridges refilled by syringe. Used litres
of
> ink. Scrapped it as the flex PCB to the head 'fatigued'.
> My next '740' model (same as yours) used to clog up if left for more
than 10
> days. (finer nozzles but cartridges still syringe refillable) Forced
to
> become an expert on nozzle cleaning, most of the nozzles could usually
be
> cleared. Finally blocked up and stayed blocked so I scrapped it.
> Last model was the 'C82'. 1000's by 1000's of dpi. Chipped, non
refillable
> cartridges, huge cartridge costs. Blocked after 7 days of non use.
Managed a
> month and numerous cleaning cycles before heads permenantly blocked.
Usual
> unclog methods failed, ended up trying pressurised hot ammonia through
the
> nozzles (caused the nozzle driver I.C to melt 🙂. Scrapped it.
> Pi***d off with Epsons, bought a next to nothing cost HP 3650.
Quality not
> brilliant, software is shite but have had it 10 months with not a
single
> problem, it has yet to block up, has taken none of my time and best of
all,
> the original cartridges can still be refilled, so costs are near zero.
> Moral of the story is that Epsom just don't know how to make high dpi
> printers that work in the real world.
> regards
> john


Amen. You're preaching to the choir!

 

[Guest]

Archived from groups: comp.periphs.printers (More info?)

That might explain why the US is rapidly running out of potable water,
and is now trying to negotiate to get more from Canada.

Talk about not learning about the value of not spoiling one's own nest!

Believe me, in spite of your arrogant belief that Western Culture has
such great benefits, they pretty much invented the cancer epidemic, and
could learn a great deal from more "primitive" cultures about not
exhausting resources beyond the ability of replenishment. Much of
"Western Civilization" doesn't have a clue about what truly encompasses
"sustainable lifestyles".

How long do you honestly believe the US could survive, for instance, if
the population was forced to produce it's own food, supply it's own
energy sources, building materials, minerals and metals, and have to
cope with its own waste?

Why don't you swear off taking any materials you currently consume from
those "noble savages" with their "30 year life spans" and see what you
have left in your cultured society? Then we'll see who is the envious one.

Art



Ed Price wrote:

>
> "Tony" <auct1@pantsaah-haa.com> wrote in message
> news:6NadnbGD8KSiHRHcRVn-pw@nildram.net...
>
>>
>> That was firstly exhausting and then enthralling to comprehend...
>> I write and like horror stories about the human pysche: would you like to
>> contact me and play name-em-and-shame-em, anonomously of course. No
>> wonder
>> the Western World is despised for its waste mountain.
>> Tony.
>
>
> The Western World is despised by envious cretins who cannot, or will
> not, admit the benefits of concepts like sanitary water systems. Their
> faulty logic romanticizes the noble savage , wiping his ass with a stick
> and a pile of sand, and earning his progeny the reward of a 30-year life
> expectancy.
>
> Ed
> wb6wsn
>

 

[Guest]

Archived from groups: comp.periphs.printers,alt.comp.periphs.printers,sci.electronics.repair,sci.electronics.equipment,sci.electronics.components (More info?)

"Watson A.Name - "Watt Sun, the Dark Remover"" <NOSPAM@dslextreme.com> wrote
in message news:10ouur8q586ea93@corp.supernews.com...
>
> "john jardine" <john@jjdesigns.fsnet.co.uk> wrote in message
> news:cmmln7$7df$1@newsg1.svr.pol.co.uk...
> >
> > "wylbur37" <wylbur37nospam@yahoo.com> wrote in message
> > news:8028c236.0411050509.287d0f5f@posting.google.com...
> > > I have an Epson 740 inkjet printer.
[clip]
>
>
> Amen. You're preaching to the choir!
>
>
Watson. I think it was yourself, (a post a couple of years ago) that caused
the scales to drop from mine eyes and guided me onto the true path of
printer righteousnous. 🙂.
regards
john

 

[Guest]

Archived from groups: comp.periphs.printers (More info?)

puss@purrpurr.com wrote:


>>
>>Once again, I would like suggest to people who read her and elsewhere
>>about removing the heads of Epson printers to clean them are being
>>poorly served by this advice.
>>
>>The heads can be cleaned without opening the case, or removing the heads
>>in nearly every situation, and by opening the case or removing the heads
>>you subject the printer to a greater risk of damage.
>>
>>I have instructions available for unclogging Epson printers which I
>>provide free of charge to anyone who requests it from me via my email
>>address.
>>
>>
>>Art
>>
>>
>>john jardine wrote:
>
>
>
> Removing the Print head IS THE ONLY way to do it correctly, that is the way
> Printer Service shops do it..
>
>
> Any other way it a hack..
>
>

Yes, fine, call it a hack. It's a hack that works well over 95% of the
time, and does so with almost zero risk of harming anything, and you
don't even have to own a screwdriver, or know how to open the case.

As I have stated dozens of times, I know of no cases of anyone who has
damaged their printer using the techniques I offer, I know of MANY cases
of people who have damaged BOTH their printers and their printer's heads
via removal and cleaning outside the printer.

While service depots may indeed remove the heads to clean them (and they
all do not, because I happen to know of several using the technique I
came up with) service depots not only have full Epson service manuals,
but also have access to Epson parts which they will gladly charge the
client for should they damage the printer during repair.

Further, I know of literally dozens of Epson printers which went to
service depots where they were informed "your printer requires new
heads" which I have either personally cleaned, or told the people how to
clean using the methods I suggest.

I have provided my Epson Cleaning Manual to thousands of people at this
point. I have made exactly ZERO financially from doing so. I don't
sell any Epson parts, I don't sell inks, I don't sell magic "cleaning
fluids". If it didn't work, you'd think by now the net would be full of
hundreds of complaints about how the methods didn't work, wouldn't you?
Instead, I get a steady flow of requests for the manual daily coming
from dozens of sources, (and I only post to this newsgroup). There is
even some guy on eBay selling what appears to be mainly a set of URLs on
Epson head cleaning for about $8 a pop.

Why do I do it for free? I do it because I am trying to keep perfectly
good printers out of the landfills and to protect people from
suggestions like yours, and web sites which suggest forcing fluid or air
through the heads which often lead to useless damaged printers. At
least once a week, I have to deliver an RIP for a printer to someone who
followed either the advice to remove the heads or forced liquid into the
heads and ended up with a completely dead printer head.

In cases of head clogs (not head failures, which unfortunately, I can't
help fix other than suggesting a head replacement) I can count on one
hand the number of people who have been unable to resolve the problem
after reading any applying the suggestions I provide.

Print head removal on Epson printers to clear clogs is potentially
dangerous to the printer and unnecessary, plain and simple. You can
call what I offer a hack. I'll call it effective.

Art

 

[martin]

Archived from groups: comp.periphs.printers,alt.comp.periphs.printers,sci.electronics.repair,sci.electronics.equipment,sci.electronics.components (More info?)

Hello,

You'll be glad to know that i am a printer technican and i repair
printers for a living, If you need a diagram for the 740 epson
carriage assembley reply to me leave me your email i can attach the
diagram for you.

OK

Take Care
Martin


> > I have an Epson 740 inkjet printer.
> >
> > After not using it for a while, I discovered that the inkjet nozzles
> > were apparently clogged to the point where the "head cleaning routine"
> > was of limited usefulness.
> > The printouts show signs of missing lines and "bleeding fibers"
> > indicating the presence of accumulated residue around the nozzles.
> >
> > I'd like to be able to free the print head carriage assembly
> > so that I can wipe the front of the nozzles and clean them,
> > but I can't find the right screws to remove.
>

 

[newage2012]

Hi Guys!
Here's how I uncloggen the head.
First, I want to say that Epson Stylus 740 although old is a very well built printer. One of those that are made to last. And no chips on the casettes too.
At first I tried all solution mentioned there with no success. The I took a syringe with windex, removed the casette and put the tip of the syringe right into the nozzle that goes into the tape. Then sprayed the alcohol with pressure. I repeated it few times and bintgo - the head got unclogged.