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Re: Unit makes a clicking sound at end of the power-up...
Sounds like the scanning mirror might be locked - during shipping, the mirror is locked to prevent damage. Look around the back or the underside of the unit and look for a slider with a lock/unlock picture on it. Slide it to unlock and the mirror should be free to move.
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Rick Kasper's solution is a good start. There is no mechanical lock for the scanner head (below the glass plate upon which the material to be copied may be placed). The "scanner" in this context is the optical head that slides along a rail below the glass plate. Its movement from the home position is monitored by a photo transistor. If the scanner head fails to release from its park position under the left hand window as it should, including during the power-up sequence, the failure message will appear. If you hear a fairly loud whining sound (from the stalled scanner head drive motor) during the power-up sequence followed by the "scanner locked" warning, it indicates that the scanner head is hung up mechanically in its park position below the left hand scanner glass. Verify this by opening the Automatic Document Feeder (ADF) before powering up and note lack of movement of the scanner head assembly. Following the sequence outlined in the service manual, remove the scanner + ADF assembly, open the scanner assembly and move the scanner head on its rail to free it up. Take care to reassemble the scanner head with the white nylon slides properly placed on either side of the head. If however, during the power up sequence you do not hear the whining noise, it is a sure indication that the motor has either failed or that no drive power is applied, but this is rare compared to mechanical hang-up.
<p>Unexpected noise (such as clicking, thumping, or grinding) from an branded device are heard during printer operation.<br />
<span><b>NOTE: </b></span><br />
Noises can be caused by a number of things, some of which may not be addressed in this document. This document deals strictly with the isolation and potential resolution of known noises through troubleshooting.<br />
<p>The following table describes some of the noises to be expected in a printer functioning normally:<br />
<span>Noise occurs:</span> <br />
<span>Additional information:</span> <br />
During power-up<br />
When the printer periodically makes humming and buzzing sounds as the carriage assembly moves around on the right/left side of the printer, the printer is actually cleaning the ink cartridges. This is a normal operation for the printer. This sequence may happen in the following conditions:<br /><br /><br />
<p>Before and/or after printing<br />
<p>During power on <br />
<p>After the printer has been on standby/idle for some time<br />
<p>After replacing a cartridge<br />
<p>In the middle of a long print job (such as printing many photos)<br /></li></ul>
During printing*<br />
<p>Paper pickup: There will be some noise during paper pickup due to the movement of rollers and gears.<br />
<p>While printing: The unit has printed a few lines or the paper has been fed into the printing area. There will be some noise during printing due to the movement of rollers, gears, carriage and paper (paper feed and ejection).<br /></li></ul>
During paper ejection*<br />
At the end of the print job, there is a louder clicking noise as the paper is being "pushed off" to the output tray.<br />
During copying/scanning<br />
The scanner may make pulsing and dragging noises as it scans portions of the document or it may make a long rolling sound if it is doing a continuous scan. After scanning, it will make a long dragging noise as the scanner is brought back to the home position (could be on the left or right side).<br />
Post-printing with no additional jobs in the queue<br />
Post-completion of a print job and without another job in queue: At the end of a print job, there will be a noise on the left/right side of the printer as the pens are being capped. The printer may try to do this a couple of times, which is normal.<br />
Between print jobs<br />
The printer may make humming and buzzing sounds as the carriage assembly moves around on the right/ left side of the printer during the cleaning of the ink cartridges.<br />
In the accessories<br />
There may be some noise associated with accessories (ADF, duplexer, etc.) during the initial positioning and during normal operation.<br />
It is normal for this scanner to briefly "scan" when it is plugged in. However, the moving lens shouldn't go all the way down to the back end. It sounds like the scanner is physically damaged, most likely the belt slipped several cogs and now the scanning mechanism is out of alignment. Look into warranty service for the unit.
I dismantled the printer because i've been having the same issue. It recedes to the right and begins clicking because it is at the end of the track. For some reason the scanner isn't registering that it is at the end of the track and keeps persisting making the gears jam up on the other end because they obviously can't move any further. Any suggestions as to how to fix, or master reset?
Remove both the ink cartridges from the All-In-One. Unplug the power cord from the All-In-One as well as the power outlet. Now move the carriage (carriage is the one which holds the cartridge) Too and Fro till you feel the carriage is moving smoothly.(You can apply little more pressure if it does not move easily) Then insert the cartridges close the access door. Plug the power cord directly to a wall outlet without surg protector.(If possible connect it to a different power outlet) Before connecting the power cord to the All-In-One press and hold the # and no 6 button and then insert the power cord, do not release the keys until you see a message a reset (if the screen goes blank then release the keys and turn the power on) Now try printing a test page or make a copy
If it still makes a loud noise and the message comes up as scanner failure, then either the scanner or the scanner machanisum is bad, you may have to replace the unit
I Have A HP Laserjet 2820 on power up went through to scanner bulb warming up then made a clicking noise comming from scanner unit it was trying to escape the case. if this is the same as yours the problem is that the scanner unit can't find the home position strip mounted betweent the gray case wide piece right hand side as you look down on scanner unit with lid up & the top of the scanner glass inside the scanner unit to get to it you must remove top section of the scanner unit & cleean underside of scanner glass please E-mail me if you want full instruction.
I had a similar problem, the scanner bar was stuck to the far left side. Here's how I fixed it:
1)Unplug the printer, disconnect any cables/phone lines to it.
2)Lift up the entire scanner bed housing(you will see the printer ink cartridges).
3)Locate the access patch (approx 1 cm x 1 cm square) along the left edge of the scanner bed housing(this is the side that closes in, next to the keypad buttons).
4)Using a small knife blade, peel off the patch from the corners and edges(it's sticky. Save it, you can stick it back over the hole when you're done).
5)Stick a pen through the access hole, and push the scanner bar to the right, approximately 2-3 inches.
6)Now, close the scanner housing, plug in the printer, and power it on.
It should reset and re-calibrate the scanner bar. If it doesn't, repeat steps 5) and 6) a couple times, until the printer correctly performs calibration. Then, you can put the sticky patch back over the hole, and you're ready to go. Hope this helps!
scanner unit initialises on power on condition.
scanner unit moves to right extreem end and makes banging noise.
This problem is due to scanner unable to find the home position.
open the flat bed glass unit . one end of there will be black colure with white stip. apply black marker ink on black colour and fix the blass back to griginal position.
scanner will work.