Question about Samsung SCX 4521F All-In-One Laser Printer

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Front or rear cover open - Samsung SCX 4521F All-In-One Laser Printer

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Your front cover is open close it.i think you replace new toner and didnt close it propely

Posted on Aug 27, 2010

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SOURCE: lcd shows "Front or Rear" (Cover Open). What is

There is probably a broken sensor on your printer. Try to open and close the cover some times it works.

Posted on Mar 01, 2011

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How to remove casing


To make sure there is a clear understanding here's a complete diagram
Overall Parts Diagram
18798043-wfiifre4chsxw5xgazxianfb-1-0.jpg
To Remove the Outside Plastics on the HP Color LaserJet CP5220 Series Printer
1) Remove Right-front cover and control-panel assembly
a) Open the front door and the right door.
b) Remove two screws (callout 1).

18798043-wfiifre4chsxw5xgazxianfb-1-3.jpg
c) Release 3 tabs (callout 1) on the right side of the assembly.
18798043-wfiifre4chsxw5xgazxianfb-1-8.jpg
d) While holding the assembly up, pull the cable holder (callout1)
disconnect one connector (callout 2).
18798043-wfiifre4chsxw5xgazxianfb-1-15.jpg
2) Remove Left cover
a) Remove Tray 2 from the product.
b) Open the front door.
c) Remove three screws (callout 1). Starting from the left side
tabs (callout 2),and then remove the cover from the product.
18798043-wfiifre4chsxw5xgazxianfb-1-24.jpg
TIP: Opening the toner-collection door might make it easier to release the tabs on the left side of the cover.
Reinstallation TIP: If the front door will not close after the left cover has been reinstalled, verify that the two tabs on the right side of the cover have been aligned correctly with the product chassis.

3) Remove Rear cover
a) Remove six screws (callout 1), and then remove the cover
from the product.



18798043-wfiifre4chsxw5xgazxianfb-1-35.jpg
4) Remove Toner collection unit access door
a) Open the toner collection unit access door (callout 1), remove the toner collection unit, and then release the link arm (callout 2) on the left side of the door. 18798043-wfiifre4chsxw5xgazxianfb-1-48.jpg

b) Partially close the door, and then disconnect the right-hand link arm (callout 1) from the door.
CAUTION: Do not disconnect the right-hand link arm when the door is completely open. Doing so can disconnect the link arm spring. 18798043-wfiifre4chsxw5xgazxianfb-1-63.jpg
c) Rotate the access door down 90 degrees, and then pull on the left side of the door to remove the access door.
18798043-wfiifre4chsxw5xgazxianfb-1-120.jpg
5) Remove Right-rear cover
a) Remove the rear cover. See Rear cover on page 93.
b) Open the right-door assembly.
c) Remove two screws (callout 1), release one tab (callout 2),
and then remove the cover.
CAUTION: The grounding spring on the back of the cover falls off easily. Be careful not to lose it.
18798043-wfiifre4chsxw5xgazxianfb-1-143.jpg
6) Remove Top cover
a) Remove four screws (callout 1).
18798043-wfiifre4chsxw5xgazxianfb-1-99.jpg
b) Open the toner-collection door.
c) Release two tabs (callout 1), and then remove the cover.

18798043-wfiifre4chsxw5xgazxianfb-1-168.jpg

7) To Reassemble Follow Instructions in Reverse

Jul 08, 2013 | HEWLETT-PACKARD Color LaserJet CP5225...

1 Answer

"Front or Rear cover is Open"


check the cover or door sensor u can short the wire of sensor after that check

Apr 15, 2013 | Samsung SCX 4521F All-In-One Laser Printer

1 Answer

How does a manual top work on a 1998 BMW 323 I??


I believe you do this in this order. Roll windows down, release the latch at the top of the windshield, raise the front of the top, release rear cover by pulling the latch near the rear seat, Pull up the back of the top and then pull up on the rear cover. The back of the top should now fit into the opening under the rear cover. Continue to fold the top into this space. Push down on the rear cover to lock (won't be able to open trunk if not engaged.) To raise it, release rear latch cover, open rear cover and pull top out of opening. Raise rear of top so you are able to now close the rear cover, set rear of top down on cover and then pull fron of top down and engage the fraont latch. Hoe that helps.

Jan 23, 2013 | 1997 BMW 318

1 Answer

My Dell MFP 1815dn has a paper Jam 2. I removed the toner cartridge and pulled the paper out, before I realized that I needed to open the back. I believe I thought I got the paper out, but the printer is...


After a paper jam occurs in the rear cover of a Dell Laser Multi-Function Printer 1815N, the printer will not resume when the jammed paper is removed. This is the normal behavior of the printer as there is no sensor on the rear cover of this printer.

To open the back cover and remove any stuck paper, perform the following steps:
  1. Open and close the front cover.
    The jammed paper may automatically exit the printer. If the paper does not exit, go to the next step.
  2. Gently pull the paper out of the output tray.
  3. If you cannot see the paper in the output tray or the paper does not move when pulled, open the rear cover.
  4. Skip to step 9. If you do not see the paper, go to the next step.If you see the jammed paper, push the two blue pressure levers up and remove the paper.
  5. Release the blue strap, the rear cover stopper, and fully open the rear cover.
  6. Unfold the duplex guide fully.
  7. While pushing the fuser lever to the right, open the fuser door. NOTICE: Make sure to unfold the duplex guide before opening the fuser door, or the fuser door may be damaged.
  8. Pull the jammed paper out.
  9. Return the levers, fuser door, rear cover stopper, and duplex guide to their original position.
  10. Close the rear cover.
  11. Open and close the front cover.
    Printing automatically resumes.

Jun 24, 2011 | Dell 1815dn All-In-One Laser Printer

1 Answer

Lcd shows "Front or Rear" (Cover Open). What is


There is probably a broken sensor on your printer. Try to open and close the cover some times it works.

Mar 01, 2011 | Samsung SCX 4521F All-In-One Laser Printer

1 Answer

HOW DO YOU REPLACE THE DOOR LOCK I NEED TO KNOW HOW TO GET AT THE LOCK THE WASHER ONLY LOCKS IF YOU HOLD IN ON THE TOP OF THE DOOR


Disconnect power then open the dispenser cover and remove the four screws securing the dispenser bezel to the top cover then lift the bezel off. The top cover with the dispenser bezel off can be lifted to the rear of the machine to access the door locking mechanism, but you have to remove the front panel first.

Open the machine door and remove the four screws located vertically along the inside lip of the door opening. These screws hold the front panel to the front shroud assembly.
afd803b.jpg

Once the four screws are removed, grasp and press in on the upper edges of the front panel posts then twist it inward to release the clips holding it to the cabinet. Tilt the top of the front panel then move it away and set it aside.
6cde6a4.jpg



The top cover is held on each side of the cabinet by two hold down brackets. Locate and remove the 5/16" hex-head screws holding each bracket.
93ee117.jpg


Swing the bracket to the outside and unhook it from the slot in the top cover lip.
67a7d37.jpg


Open the door then lift the front of the top cover and tilt it toward the rear of the machine. The door locking mechanism can now be removed and replaced.. Reinstall the top cover and the front panel by following the removal steps in reverse order.

Jan 19, 2011 | Maytag Neptune MAH5500B Front Load Washer

1 Answer

Front and rear cover open but all covers are closed


hello check again properly.i think front cover is open
if you replace toner and didnt close front cover properly or you open it and didnt close properly.

Sep 09, 2010 | Samsung SCX 4521F All-In-One Laser Printer

1 Answer

Says front of rear cover open - won't print, how to fix?


hello your front cover is open .i think you are install new toner and didnt close front cover properly

Aug 26, 2010 | Samsung SCX 4521F All-In-One Laser Printer

1 Answer

How do you open the top? the padals inside the drum are coming loose


The front panel needs to be removed first before the top cover can be lifted to the rear of the dryer to access the outside of the drum and re-tighten the screws attaching the baffles to the drum. Disconnect power to the dryer prior to servicing to avoid the risk of electric shock.

Open the dryer door and remove the four screws located vertically along the inside lip of the door opening. These screws hold the front panel to the front shroud assembly. Once the four screws are removed, grasp and press in on the upper edges of the front panel posts then twist it inward to release the clips holding it to the cabinet. Tilt the top of the front panel and move it away from the dryer.

The top cover is held on each side of the cabinet by two hold down brackets. Locate and remove the 5/16" hex-head screws holding each bracket then swing the bracket to the outside and unhook it from the slot in the top cover lip.

Open the door then lift the front of the top cover and tilt it toward the rear of the dryer. Reinstall the top cover and the front panel by following the removal steps in reverse order.

Aug 01, 2010 | Maytag Atlantis MDE7400AY Electric Dryer

2 Answers

Dead battery


Removal Procedure

Disconnect the negative battery cable

Remove the wheelhouse liner.

Open the positive battery cable connection cover.

Loosen the positive battery cable bolt.

Remove the positive battery cable

Remove the front fender rear bracket to side rail bolts.

Remove the front fender to front fender rear bracket upper (1) and lower (2) bolts.

Remove the front fender rear bracket.

Remove the battery hold down retainer bolt and retainer.

Important: Do not tip the battery more than 40 degrees during removal.

Remove the battery.



Installation Procedure

Important: Do not tip the battery more than 40 degrees during battery installation.

Install the battery.


Install the battery hold down retainer and bolt.

Install the front fender rear bracket.

Install the front fender rear bracket to side rail bolts.

Install the front fender to front fender rear bracket upper (1) and lower (2) bolts.

Install the positive battery cable (1).

Tighten the positive battery cable bolt.

Close the positive battery cable connection cover.

Install the wheelhouse liner.

Connect the negative battery cable

Oct 15, 2009 | 2006 Pontiac Solstice

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