Question about HP LaserJet 4650n Printer

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Remove control panel

I have an hp4650n. Paper jamed and the we snapped the green tab on the transfer kit/ or the developer located right under and behind the contro panel.. The manaul shows the control panel comes off but does anyone know how?

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You may have to remove the right and left covers, but there is one screw on the left side of the panel and 2 screws on the right side and the panel should just lift off.

Posted on Feb 27, 2009

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How to change developer beads

I have the complete 9 page instructions with images if you want I can e-mail them to you. Here is a snippet explaining just the portion of the beads. (email me at for complete instructions). Also, if you purchase the developer beads from they will include the instructions " 1. Place the developer housing assembly (new or used) to be recharged on a drop cloth. Caution During this procedure, the developer housing assembly must be kept level at all times. To prevent toner spillage, it is recommended that the developer housing assembly be fully supported level by laying it on something like a large piece of cloth, paper towels or styrofoam hollowed out for the developer housing assembly to lie on. If new, remove the protective cover over the magnetic roller. Do not touch the magnetic roller. Note The wires are routed under and behind the right snap tab. 2. Release the snap tabs at each end of the developer housing assembly and remove the assembly cover. 3. Agitate the package of developer mix and then cut it open. Carefully pour the entire contents of developer mix as evenly as possible over the two augers. Do not let the developer mix accumulate heavily on the roller. Keep the developer housing assembly level. 4. Reinstall the cover making sure that the rear tabs are all engaged in their respective slots while positioning the wire harness under the snap tab. Press firmly until you hear a positive "snap" sound for each tab indicating each snap tab is securely fastened. 5. Tear off the ATC sensor perforated tag. Do NOT remove the ATC sensor label from the developer housing.Peel off the protective backing, and adhere the label to the appropriate or corresponding Imaging Unit Plate. Make sure the ATC sensor tag label can be located if needed later. 6. Record the number for entering into NVRAM in the next step. 7. Perform the ATC Sensor Setup procedure."

Sep 13, 2011 | Xerox Phaser 7750DN Laser Printer

1 Answer


Disclaimer ... this advice is worth what you paid for it ... Nothing...
Writing this from memory... may have forgotten somethings...However make sure you have a shop vac in case of accidental spill. Ive done this SEVERAL times... don't actually enjoy this job of many other options....Lexmark X945 ... oh power off the printer first ...

1.Remove the front door 2 screw hold the bracket at the bottom. After the screws are removed they should slide and lift off. The 2 straps disconnect at the printer. Squeeze the tabs and twist they should pop off but be careful not to brake them.
2.Remove the small front/left cover and toner fill shroud. 2 screws hold the front/left cover in place and it just slides up. The toner fill shroud has 4 screws that hold it in place.
3.Remove the toner fill assemblies each color has 1 screw. Be sure to pull the closing slip on the bottom of the drain where it connects to the developer to avoid spilling more than you must.
4.Remove the waist toner full housing assembly. If I remember correct its 1 screw and 1 C-Clamp. Detach the cables and put the part to the side.
5.Remove the bracket that holds the developers in place being careful not to drop cable snaps.
6.Remove old developers fill new developers with fill kit and NOT toner.Make sure the developers are properly insearted so when you get it back together you don't have to take it apart again. Good way to check it when you put them in push down on the end of the developer that sticks out. If it lifts in the rear you don't have it in correctly.
7.Reassembly(reverse what you just did) and reset sensor settings in configuration menu mode.

Apr 18, 2011 | Lexmark X945E Printer

1 Answer

How do you install a transfer kit to 4700 dtn printer?

Replacing the ETB (transfer Kit)
Replace the ETB when a REPLACE TRANSFER KIT message displays on the control panel.
1. Turn the printer off.
2. Open the top and front cover.
3. Lower the ETB by pulling the green handle at the top of the unit downward.
4. Press the small blue latches located on either side of the bottom of the ETB and lift the unit out
of the printer.
5. Install the new ETB.
6. Close the front and top covers.

Jan 13, 2011 | HP LaserJet 4700 Printer

1 Answer

How to replace maintenance kit; there were no instructions

front door---raise 2 locks(levers)---pull out fuser
feed roller
remove paper fully--- under the printer move lever to the right and remove the feed roller(do not turn the printer upsidedown)
transfer roller --
front door--- press 2 green locks and pull unit out

Jan 08, 2010 | Ricoh Aficio SP C410DN Laser Printer

1 Answer

AR 200- paper pulls to the green bar and then stops- will not print or move from there and screen says to clear paper path. no paper moves beyond the same point.

This "green bar" (registration roller) could be a few things
  1. Registration sensor dirty or inoperable
  2. Feed tires dirty
  3. Registration rollers dirty
  4. Fuser gate broken
For item 1 the flag and sensor is located under the copier. if you only have one tray then this can be located and removed easily. if you have 2 trays then this get more difficult. Here are the steps for one tray
  1. Open and remove right side door
  2. Remove toner, developer, and drum unit
  3. Remove paper tray
  4. Turn copier on its right side
  5. (Top is away from table and bottom is towards table) Towards the bottom of the copier there is a guide that needs to be removed (2 screws)
  6. There is a cover where a couple of wires are going to needs to be removed (use caution)
  7. Once removed take can of air and blow out sensor
  8. Replace items as removed
For item 2 follow steps 1-4 and locate tires clean using warm soapy water on a lint free cloth or mechanics towel

For item 3 open and remove right side door and clean grey rollers located under green cylinder which is your drum (USE caution not to touch or damage)

If the first 3 steps do not help then you should call your local Sharp dealer for repairs.

Mar 17, 2009 | Sharp Office Equipment & Supplies

1 Answer

Setting up printer for reverse/mirror printing

I used to use iron on transfers all the time for different things. The setting is usually available whan you attempt to print the image you have different options in properties. Under the advanced tab in printer properties there is something called media type. You can set this to iron on transfer. To locate printer properties in XP for example go to Start>Control Panel>printers>view all printers right click on the printer you intend to use and select properties.

Mar 12, 2009 | Canon Office Equipment & Supplies

3 Answers

HP 2840 Jam in Print Paper Path

There are 2 primary paper sensors. One is the registration sensor where the paper feeds in, the second is associated with the fuser unit.

The first sensor is located under a cover under the transfer unit.
i) Open the door
ii) Lift out the transfer unit (Q3964A)
iii) Locate the black plastic cover plate with a small green flap in the centre. This assembly is directly under where the transfer unit was installed.
iv) There are 2 shiny screws that secure this cover plate. Carefully remove these screws.
v) Lift out the black cover plate by lifting the left section up first which allows the right section to come clear of gears.
vi) Check for paper obstructing the small movable lever under the cover plate.

vii) To reinstall the cover plate, insert the right hand side down first and line up with the mounting holes.

I can supply photos if required.

Jan 10, 2009 | Ricoh Aficio 250 Copier

2 Answers

HP2420 Manual

Are you sure it's not the transfer roller that you want to replace?? this is the roller which sits directly under the toner cartridge, the fuser sits more towards the rear of the printer. I'll list instructions for removing both. Hope this helps

To remove the transfer roller -
1. Release the left end of the transfer roller by using needle-nose pliers to pinch two tabs at
the left end of the transfer roller.
2. Use the needle-nose pliers in the same manner to release the other end.
3. Lift the transfer roller out of the printer.
The left end of the transfer roller has a spring attached. At the right end of the roller, the
spring is attached to the printer rather than to the roller. As a result, the spring at the right
end remains in the printer.

To remove the fuser -
1. Remove the back cover and the I/O cover.
2. Remove the fuser-cable cover by releasing one tab on the cover, and then
rotating the back of the cover toward the center of the printer.
3. Remove the duplexer inlet guide by releasing two tabs on the guide, and then
sliding the guide toward the back of the printer.
Reinstallation tip
Make sure that both tabs snap back into place when reinstalling the duplexer inlet guide.
4. Disconnect two cables at the left, inside, of the printer.
5. Disconnect the fuser cable at the right side of the printer.
6. Remove four screws securing the fuser.
7. Tilt the fuser slightly toward the back of the printer, and then slide the fuser out of the
back of the printer.

To remove the back cover -
1. Open the face-up delivery door all the way, and then press the door down to disengage
two door-stops.
2. Remove two screws
3. Close the face-up delivery door, and then tip the printer so that it rests on its front.
4. Open the "legal-size" cover, and then disengage one tab.
5. Lift the bottom of the cover first, and then lift the cover away from the printer.
6. Tip the printer back so that it rests on its feet.
To remove the io cover (looking at the printer from the rear, this is the small cover on the left side) -
1. Rotate the I/O cover to clear tabs at the right side of the cover.
2. Lift the cover off of the printer.

Nov 12, 2008 | Office Equipment & Supplies

2 Answers


Open the front door and do you have a sorter on it? If so, you need to move it away. The finsher has a bracket and right under the bracket there is a handle pull the handle up and find you will see your jamed paper. Also, look at the duplex area under the transfer unit. It has a green handle lift it up and maybe find a jam there. You may have found it by now

Jul 10, 2008 | Canon imageRUNNER 400S Copier

1 Answer

Installing a Transfer Kit

i got this info from site - they have most service notes for hp printer and sell most hp parts, including maintenance kits. I hope info. bellow is helpfu.

Replacing the transfer unit
Replace the transfer unit when the printer control panel displays REPLACE TRANSFER
. The image transfer kit contains a replacement transfer unit for this printer.
WARNING! Remove any jewelry or any other metal items from your body to avoid electric shock.

1. Lift the front door handle and pull down the front door.
2. Grasp the right blue handle. Press and hold down the blue button. Slightly lift the right
side of the transfer unit.
3. Grasp the left blue handle and lift to remove the transfer unit from the printer.
4. Using handles, remove the new transfer unit from the bag. Use the blue handles on both
sides to hold the transfer unit.
5. Place the new transfer unit on a flat surface. Remove the orange shipping locks.
6. Guide the left side of the transfer unit into the front door of the printer. Insert the two
pegs on the left side into the holes, and then lower the right side into the door.
7. Make sure that the blue button on the right blue handle has released (popped up). If the
button has not released, grasp the right blue handle and pull the transfer unit toward you.
8. Firmly close the front door.
9. After the front door is closed, after a short time, the printer control panel displays the
10. If the message NEW TRANSFER KIT does not appear, you must reset the transfer unit
count. To reset the transfer unit count, go to step 11.
11. On the printer control panel, press to highlight YES, and then press to select it. The
transfer unit count is reset, the printer recalibrates, and then the printer is ready to use.
NOTE If the old transfer unit was not at end-of-life when it was replaced (for example, if it was
damaged), the transfer unit count must be reset using the printer control panel.
Replacing the transfer unit when it is not at end-of-life
If you replace the transfer unit when it is not at the end-of-life, for instance if it is defective,
you will need to reset the transfer unit count and then calibrate the printer, through the
control panel.

To reset the transfer unit count, do the following:

1. Press MENU to enter the MENUS.
2. Press to highlight Configure Device.
3. Press to select Configure Device.
4. Press to highlight RESETS.
5. Press to select RESETS.
6. Press to highlight RESET SUPPLIES.
7. Press to select RESET SUPPLIES.
8. Press to highlight NEW TRANSFER KIT.
9. Press to select NEW TRANSFER KIT.
10. Press to highlight YES.
11. Press to select YES.
To calibrate the printer, do the following:
1. Press MENU to enter the MENUS.
2. Press to highlight Configure Device.
3. Press to select Configure Device.
4. Press to highlight PRINT QUALITY.
5. Press to select PRINT QUALITY.
6. Press to highlight CALIBRATE NOW.
7. Press to select CALIBRATE NOW.
8. Wait for the printer to calibrate.
The transfer unit count is reset and the printer is ready to use.

see pictures on link:

Apr 18, 2008 | HP Color LaserJet 3500 Printer

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