Question about HP Color LaserJet 8550dn Printer

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I have cleaned the density sensor of our 8550n manytimes, shutdown and restarted but the display keeps coming up 'clean density sensor cycle power?'

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Posted on Jan 02, 2017

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SOURCE: How to clean Density Sensor of Hp 3500 ?

Thank you for this info. I used your advice to fix my HP printer and it worked. By the way, great link to HP support parges on the www.partshere.com site. I was able to fix my printer and by the way purchased more printer parts and fusers. Thank you again!

Posted on May 02, 2008

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SOURCE: Density sensor out of range

The density sensor is located in what is called the Colour Registration Detection Assy. When you open the front door where the ETB belt is, the assembly sits were the door closes at the top on the printer side.

It can get toner on it, so check it and give it a clean. But do not touch it with your fingers.

Posted on Oct 22, 2008

POCBM
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SOURCE: how to clean a density sensor unit on a hp color laserjet 8550

1 Open the right upper door.
Sensor is located on the door lower center of door ther should be a small brush next to it
2 Use the brush located next to the sensor to remove all toner
particles from the sensor.

Posted on Mar 04, 2009

  • 44 Answers

SOURCE: WHAT IS DENSITY SENSOR IN LASERJET 8500

The Density Sensor is located inside the right upper door and senses the colour calibration pattern for each colour formed on the transfer drum during a calibration cycle. Press GO. Print a configuration page and then troubleshoot as an Image-quality problem as instructed in the user manual. Check the transfer guide for cracks and replace if necessary. Check the event log for errors numbered 54.00.0<X> the X indicates, 5-sensor abnormality, 4-Cyan, 3-Magenta, 2-Yellow, 1-Black. The last 3 error codes should be seen on the Configuration page.

Posted on Dec 29, 2009

puertobori
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SOURCE: nothing will print. says clean density sensor I

Try using the HP Print Diagnostic Utility in Windows - HP Customer Care (United States - English)

Posted on Jan 05, 2011

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I had a problem my color laserjet printer 8500dn that is asking to clean density sensor I don't no how to do it please help


Hi Elias, The link below is a user manual for a color laser jet 8500, 8500n, 8500dn, I had a look and the answer to your question (Clean density sensor) is on page 155 (To clean the density sensor
1 Open the upper right door.
2 Use the brush located next to the sensor to remove all toner particles from the sensor)..... This WILL Help...CHEERS..
http://h20566.www2.hp.com/hpsc/doc/public/display?docId=emr_na-c00656644

Mar 30, 2016 | Office Equipment & Supplies

1 Answer

Error ce40


Read this

http://www.copytechnet.com/forums/toshiba/78223-toshiba-estudio-281c-error-ce40-total-491000-a.html

and this

PRINTERCAT : Hi this is Michelle and i will be assisting you. PRINTERCAT : Error CE40:CE40] Image quality control test pattern abnormality(1) Use "Image quality control abnormal detection counter Y to K display/0 clearing (08-573 to 576)"to check the abnormal occurring condition for each color. PRINTERCAT : (2) Check "Output value display of image quality sensor / Low-density pattern (05-391-0 to 3)" tocheck if the low-density pattern abnormality occurs for each color. The values under 320 for Y, Mand C, and under 220 for K are defined as low-density pattern abnormality. PRINTERCAT : (3) Check "Output value display of image quality sensor / High-density pattern (05-390-0 to 3)" tocheck if the high-density pattern abnormality occurs for each color and identify the color whichpattern is abnormal. If the value is 630 or above, it is defined as high-density pattern abnormality. PRINTERCAT : (4) Set the values of "Image quality closed-loop control / Contrast voltage (08-556)" and "Imagequality closed-loop control / Laser power (08-557)" to "0" (Invalid). PRINTERCAT : (5) Perform "Enforced performing of image quality open-loop control (05-394)". PRINTERCAT : (6) Output the image quality control test pattern (04-270) more than one time and check the patch ofthe color identified in step (3) to see if the image is abnormal (Note). PRINTERCAT : (7) Replace the image quality sensor. PRINTERCAT : (8) Set the values of "Image quality closed-loop control / Contrast voltage (08-556)" and "Imagequality closed-loop control / Laser power (08-557)" to "1" (Valid). PRINTERCAT : (9) Perform "Enforced performing of image quality open-loop control (05-394)" and make sure it iscompleted normally. (Error [CE40] does not appear.) Then perform "Automatic gamma adjustment"( Chapter 3.5.1 and 3.6.1).(10) Clear all "Image quality control abnormal detection counter Y to K display/0 clearing (08-573 to576)". PRINTERCAT : Please note:Abnormal image:Blank print, Solid print, White banding, Color banding, White spots, Poor transfer, Uneven imagedensity, Faded image (low density), Uneven light distribution, Blotched image.''''''''''??320 or above (Y, M and C)220 or above (K)''??Under 320 (Y, M and C)Under 220 (K)Low-density pattern abnormalityCheck the transfer belt. If the cleaning is poor, correct thetransfer belt around its cleaning blade.'??To (9)''''''??Normal '??AbnormalCorrect the items related to the image.

Mar 24, 2016 | Office Equipment & Supplies

1 Answer

Have a acer aspire 5520,it has developed several problems,1, will often freeze on full screen mode,have to shut it down and restart,2, will keep on shutting down after battery light starts flashing,will...


1. Check your power cord & adapter.
2. If its working then check the battery, reseat the battery & check.
3. If available then check with another battery
4. If no, then remove the battery & switch on the PC in AC mode.
5. Check if battery charging indication or AC power on indication is glowing. if not then need to change ur motherboard.
6. If indication is OK, but could not power ON then check ur RAM for any loose connection or dust. clean & reinstall.
7. If still no display, connect an external monitor, check if display is comming.
8. If Display is coming then your LCD need to replace.

Aug 21, 2010 | Acer Aspire 5520-5908 Notebook

1 Answer

WHAT IS DENSITY SENSOR IN LASERJET 8500


The Density Sensor is located inside the right upper door and senses the colour calibration pattern for each colour formed on the transfer drum during a calibration cycle. Press GO. Print a configuration page and then troubleshoot as an Image-quality problem as instructed in the user manual. Check the transfer guide for cracks and replace if necessary. Check the event log for errors numbered 54.00.0<X> the X indicates, 5-sensor abnormality, 4-Cyan, 3-Magenta, 2-Yellow, 1-Black. The last 3 error codes should be seen on the Configuration page.

Dec 29, 2009 | HP LaserJet 8500 Color Printer

1 Answer

Oven won't heat


Unplug the power cord for thirty minutes, this should reset the oven.
If this still does not work do the following:
Press clean and then cancel. This will reset the appliance.

If the error does not clear , then during the self cleaning cycle, the high temperature has probably damaged the temperature sensor probe, and it must be replaced.

Dec 03, 2008 | Whirlpool RBD305PD Electric Double Oven

3 Answers

Dp 4530 error code E03-40


e3-40 usually appears when the copy density sensor is dirty. it is located at the bottom of the drum unit. you may pullout the drum unit from the machine and disassemble it to clean the copy density sensor board. it is a small PCB that has two proximity sensors.

pls. keep in touch if you still need an assistance

Oct 09, 2008 | Panasonic Workio DP-4530 Copier

3 Answers

Canon 1150 E020 04E0 Code error


change all 4 developers plus blow clean both developer sensors you can find these sensors next to the black developer assy it has one screw

Jul 23, 2008 | Canon CLC 1150 Color Copier

1 Answer

How to clean a density sensor unit on a hp color laserjet 8550


1 Open the right upper door.
Sensor is located on the door lower center of door ther should be a small brush next to it
2 Use the brush located next to the sensor to remove all toner
particles from the sensor.

Jun 06, 2008 | HP Color LaserJet 8550dn Printer

1 Answer

Problem


The sensor it refers to is the density sensor located inside the machine via the right hand door. Open it and clean the large sensor in the middle. If this doesn't work then clean it with a soution and a soft cloth.

Thanks J

Oct 02, 2007 | HP LaserJet 9500n Printer

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