3400c after latches under cover slots, first clip about 3.25 inch next 9.75 inch, along the long sides from latches , then slide out ,use thin driver , like lady said BUT while in there , take a Q-tip and some 10-30 or what ever oil , and LIGHTLY no not one drip , oil the round bar and a little on the wear surface of the square bar ,this will stop a clicking noise .Clean glass to , never turn a scanner upside down , dirt falls on glass again .
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working with computers since 1964 (yes, there were computers even then...), with consumer scanners since 1988, servicing hp equipment and scanners since 1998, for saving my life - i never, ever see any smudging on internal surface of the glass... could you kindly elaborate how you get smudging there?
there is no consumer serviceable parts inside, these are "disposable" scanners and never intended to be repaired or serviced inside.
Detach the ADF assembly. Remove the 4 case screws from the scanner bottom. The case has a notch at the back that has to be unclipped to separate the top and bottom. Clean the glass underside repeatedly, I use methylated spirits on soft toilet roll. Check in the glare of the scanner light, and reassemble.
This kind of problem - continuous black lines - is usually caused by a speck of grit or dirt on the scanner head. The dirt is immobile in relation with the head, so the latter "sees" black wherever it goes. It's possible that the head is damage, but that is a very rare occurrence indeed, while dust is far more frequent.
You need to remove the protective glass (be careful when releasing the lock, and use gloves if possible - fingerprints may be inconvenient to remove; use solvent-free window cleaning fluid and a little water, in case) and clean the head using compressed air and a soft, lint-free cloth. Then reassemble.
In some models - don't know about the G2410 though - it is also possible to reach the head from two small openings on the sides of the platen glass. You launch a scan, so that the head moves from its resting position until it's nearest the openings. Then unplug the power, thus marooning the head in a reachable position. Most compressed air cans come with a thin straw which will allow you to reach the head without opening the scanner (and voiding the warranty, more often than not). CAREFUL not to invert the air can: the white spray of freezing liquid (it's not really "air") coming out from an inverted air can may damage or permanently stain the scanner head. If the grit is visible and the opening large enough, you may even be able to arrange its removal with a long thin wooden skewer or even a drinking straw.
Yes, but it is not a simple process. Typically these are sealed and rarely need the bottom part of the glass cleaned. However seems I always get that rare few. :)
You must remove the mounting fasteners. Be careful and make note which positions the fasteners were removed. Each model has different locations. You may even have to pull up a label to reach a few of these. Hidden and tucked away not for the novice. Try to remove ONLY the ones needed holding the glass in place.
Once you have the glass removed, use canned air or something to blow out the case. Clean glass and reverse the process. Never EVER spray anything wet inside the case.
Be warned, it is very easy to S-t-r-i-p out a mounting point as you are working with plastic parts. Labels may not lay perfectly flat once you have pulled them up to remove a fastener. Little glue helps here for stubborn spots. Use light weight glues like Elmers. You do not want the glue that holds like steel. You may have to dive in there again in the future. :)
I recently picked up a SJ 3300Cse and have the same issue.
On mine, on the top of the scanner near the hinges there are two small white rubber peices that are very well camoflaged. If you remove them you'll see the two screws to open the hinge side of the case.
Often the plastic will out gas and it will deposit a film on the glass. You might have to open it up and clean the inside of the glass with window cleaner. There is also a mirror in the scanner head. That can get fogged up too (in fact it gets fogged up more frequently than the glass plate). The trick there is to find the mirror below the slot and then clean it with a q-tip that has been dipped in alcohol.
You remove the panel that holds the control buttons by putting a small flat head screwdriver under the both outside edges (held by two small pins). Be carefull the ribbon cable does not unplug. After removing the two screws that are under the back hindge slots, the whole top pivots up and off of pins at the front. You feed the panel thru the hole left when you removed it. This frees up the top and the glass on both sides can be cleaned. Hold the glass up to a strong light to be sure it is clean before putting everything back in reverse order