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Had a similar problem on a HP MFC3330
Fixed it with the following video aid:
"how to fix the scanner bulb warming up error hp 3330 or repair 3380 scanner bulb warm up problem - YouTube" http://youtu.be/lqG_nmi3vC4
ISSUE: A Scanner Bulb Error message is received as a result of the HP LaserJet 3300mfp series product scanner's inability to find the home reference point. SOLUTION: Perform the following steps to walk the scan assembly from the home base and resolve the issue.
1. Remove and replace the power cord from the unit. 2. Wait approximately 35 seconds for the scanning assembly to "walk out" and then quickly remove the plug again. 3. Repeat steps 1 and 2, three to four times until the head moves approximately 1 inch away from its normal resting place. 4. Replace the plug and let the product fully finish the boot cycle.
If this does not resolve the issue or the issue returns, upgrading the product firmware may help. The firmware upgrade can be found at the HP Web site Downloads, Drivers, and Notifications page .
The 'scanner warming up' error is caused by dirty scanner optics. What happens is the scanner initializes the lamp and starts reading the scanner pickup waiting for the light to get to a certain brightness level. When the optics get dirty from dust or smoke then the light getting to the scanner pickup is reduced so the unit thinks the scanner bulb has not reached the correct brightness so it says wait. What you will need to do is dis-assemble the top portion and clean the scanner optics. We have a step by step guide to do this procedure posted on our web site at: http://www.ccl-la.com/blog/index.php/hp-laserjet-3330-scanner-warming-up-error/ This should get you back going again.
I hope this helps you out, if so please rate our solution.
You are correct with your diagnostics, he problem is caused by dirty optics. The mirrors in the scanner have dust, lint or smoke on them. When the scanner powers up it tries to calibrate itself and waits for the bulb to warm up so the light output gets to a certain level. With the dirty optics the scanner never gets enough light so it thinks the scanner is still warming up and so it waits for the light to get brighter. After a few minutes of waiting and not getting the correct level of light it gives the power off message. We have a dis-assembly and cleaning guide with step by step instructions posted on our web site at: http://www.ccl-la.com/blog/index.php/category/printer-repair/hp-printer-repair/ This procedure takes about 30 minutes to complete but it should et you back going again.
I hope this helps, If so please rate our solution.
i have found that in alot of cases that these units stall on scanner bulb warming because the scanner cannot find home. do you hear a noise like the carriage motor contnues to just move a little bit? what happens is this the ccd knows its home by the brightness of the refected light off of the white carriage home strip on the back side of the glass cover its reflected to a photo cell which is tripped telling the ccd its home. if the bulbs the white strip or the mirrors inside the ccd get a light dusting of dirt on them they dimm this light and the photo cell will not be triped thus creatiing this problem. with a flash light you can see if these mirrrors are fogged. clean them with a q-tip and alcohol. about 65% this fixes it.
I found this solution at HP website. It worked for me. Good luck!
A Scanner Bulb Error message is received as a result of the HP LaserJet 3300mfp series product scanner’s inability to find the home reference point.
Perform the following steps to walk the scan assembly from the home base and resolve the issue.
1. Remove and replace the power cord from the unit.
2. Wait approximately 35 seconds for the scanning assembly to “walk out" and then quickly remove the plug again.
3. Repeat steps 1 and 2, three to four times until the head moves approximately 1 inch away from its normal resting place.
4. Replace the plug and let the product fully finish the boot cycle.
the cables connected internally to the scanner unit had gone short some where in between you have to check it manually by opening the device .and then remove the cables and replace them with a same length cable.you can get the cables from any electronic shop who keeps printer assessories.
1 = dark find 2 = LMW temp find 3 = bulb warm up from off 4 = bulb warm up from coarse 5 = cal label find 6 = doc original find 7 = LMW final find 8 = cal label find after scan 9 = cal label find prior to standby 10 = doc original find prior to standby 11 = bulb warm up from standby
I would see if there is an original on the flatbed glass (platen), or if something is obstructing the scanner view.
If the error persists, replace the scanner assembly or the formatter pcb