Question about Brother MFC-640CW All-In-One InkJet Printer

1 Answer

How do I remove the control panel?

Not long after we got the MFC-640CW, a plant-watering overflow resulted in water on the control panel of the unit. Most of the buttons haven't worked since then. We still used it on occasion via software control but would really like to make it fully functional again.

I have taken apart plenty of gear and cleaned/fixed little carbon-button/membrane switches, so that part I'm OK with. I just can't figure out how to take this thing apart so I can get at the dirty bits.

How do I take this thing apart?
Thanks!


Posted by on

  • zemlin Jul 04, 2014

    fwiw, it's still working 6 years later.

×

1 Answer

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

Figured it out. There are three screws under the lid. One of them is tough to get at, but if you remove the lid support and the phone rest the lid will open to 90 degrees. At that point the top just pulls away from the base unit. You may have to unsnap the small cover where the wires pass from the base to the top unit so you can pull enough slack in the wires to pull the top off the hinges. Once that's done removing the last screw is easy.

After the screws are out, prying around the edges of the panel unsnaps the remaining retainers and pops it right off.

The problem in our unit ended up being corrosion in the circuit area of the board. I cleaned up the corrosion and found one trace that was broken. I soldered a jumper around the broken trace. The broken trace was preventing 4 of the buttons from functioning. Once the jumper was in place all the buttons started working.

Back in business.

Posted on Jul 22, 2008

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Washing machine will not stop filling during rinse cycle resulting in an FE error


Washer fills with water and overflows:

The water pressure level switch is a pressure activated switch that is used to determine the correct water level in the tub. This part is normally located behind the control panel and will have a hose or air dome tube that connects it to the tub. On washers that use an electronic control, this switch may be located at the sump area below the tub. As the water fills in the tub it will compress the air in the tube and push against a diaphragm inside the switch. The switch will control the water inlet valve and turn the valve off at the correct water level. If the tube has a leak, not enough pressure may be created to activate the switch and the washer may overfill. If the switch is defective it may also cause the machine to overfill. To determine if the switch is bad, you should first eliminate the air dome hose as a problem. Look for signs of cracks or worn areas on the hose. Remove the hose and submerge in water. Seal one end and blow air into the other end and look for bubbles. Check for an obstruction in the hose as well. If the air dome hose appears to be ok, then the water level switch may be defective.

You can test it with a meter and with a manual test? ( first locate it in the panel, it has a plastic clear tube hose going into it, remove that tube from its connection, now put another small tube or hose into the slot where it was and have the machine set to wash cycle with water in it. Blow into the other end of the tube.
If the machine starts to wash. the pressure switch is more than likely good
( No wash- then THE DIAPHRAGM IS BAD AND SWITCH HAS TO BE REPLACED).

The other item to check would be your water inlet valve. Check it for continuity with a multi meter it should show Ohms or a closed circuit. To test it when water is overflowing unplug the unit and see if it still overflows or continues to fill. If it stops when unplugged. Then it is not a water inlet problem but an electrical signal problem going to ur water inlet valve. Possibly from the panel or board. You can also do a live volt test to see if it is getting the full 120 current, but be sure to unplug unit before testing as this is a live test.
Also another trick to check the water valve, is to first cut the water off and remove the hoses off the back of the washer. Then one at a time point the hoses inside the washer tub and turn the water back on. If you don't have good water pressure, turn the water back off and remove the strainer that should be in one end of the hose. Inspect the strainer to see if it is stopped up, clean it and reinstall it. Now repeat this test. If you have good water pressure now, reinstall hose and your problem is fixed

By the way my advice is free cuz God is good!









13995450-0ibogqi43422e0jrk2ickvgv-2-0.jpg

13995450-0ibogqi43422e0jrk2ickvgv-2-2.jpg

13995450-0ibogqi43422e0jrk2ickvgv-2-5.jpg

13995450-0ibogqi43422e0jrk2ickvgv-2-9.jpg

13995450-0ibogqi43422e0jrk2ickvgv-2-14.jpg

13995450-0ibogqi43422e0jrk2ickvgv-2-20.gif

Aug 14, 2012 | LG WM-1832C Front Load Washer

4 Answers

The eco light is flashing constantly on my Dishlex Global 300 dishwasher, it is making a noise like a pump is running continously, but the unit will not operate. Can you give me some possible faults and...


Hi,

The symptoms on a Dishlex Global 300 dishwasher:
  • eco light is flashing constantly;
  • noise on pump running continuously;
  • but the unit will not operate.
Possible corrective actions include:
  • water level - pls check incoming water pressure, filter, water level sensor, water valve;
  • base/bottom overflow sensor - there is a float switch in the base of the machine inside a small plastic dish. Behind the kick panel, access through a metal lid/panel/cover secured by 2 small screws. Dry completely the area;
  • Air/dry/ventilate the unit/system for a couple of days;
  • reduce incoming water pressure.
Hope that this be of initial help/idea. Pls post back how things turned up or should you need additional information.

Good luck and kind regards. Thank you for using FixYa.

Oct 26, 2008 | Dishwashers

1 Answer

Water keeps going and overflows


Hi and welcome to FixYa. I am Kelly

You will have to open the top panel for steps below

Water level control is handled by the water level pressure switch inside the top panel. It is about 3.25 inches in diameter, has 3 wires connected to it and a hose that looks like a small vacuum line.

Check that vacuum looking line for any holes, kinks or disconnects.

You will need about 3 feet of the same knid of line available from any autoparts store for this test.

Remove the machine side hose and connect the 3 ft hose you just obtained. DO NOT drop the machine hose into the machine.

Place the timer on the wash cycle and start the cycle
Result = fill

Force air into the hose orally until you hear a click.
Result = fill stop agitation begin

If it does not pass this test then the pressure switch is bad.

If water never stops flowing the water inlet valve has debris internally and will probably have to be replaced.

Don't forget to reconnect the machine side hose to the pressure switch.

Thanks for using FixYa!

Kelly

Then remove the vacuum

Feb 18, 2010 | Maytag PAV2300 Top Load Washer

1 Answer

Water spewing into the reservoir and ovrflowing


Sounds like you do not have an orifice in the water line to regulate the water pressure.

Feb 25, 2009 | Aprilaire 550 Humidifier

2 Answers

Kenmore HE2 #1104751. Overflows as it is just beginning to fill with water


ck inlet just inside door upper left could be blockage in line from dispenser into tub especially if you have been using dry detergent remove detergent drawer and ck for blockage from that end too

Oct 09, 2008 | Kenmore Elite 45986 Front Load Washer

2 Answers

Brother MFC-640CW


Try pulling the cord from the back of the printer and re-inserting it.

Jan 11, 2008 | Brother MFC-640CW All-In-One InkJet...

1 Answer

Offline status


Under the control panel, click on the printer to bring up the print dialog. Go to printer at the top of page, drop down the menu and uncheck use printer off line. Should bring it on line.

Hope that helps

Oct 30, 2007 | Brother MFC-640CW All-In-One InkJet...

Not finding what you are looking for?
Brother MFC-640CW All-In-One InkJet Printer Logo

70 people viewed this question

Ask a Question

Usually answered in minutes!

Top Brother Office Equipment & Supplies Experts

CheckitRight
CheckitRight

Level 3 Expert

1362 Answers

Soulvisitor
Soulvisitor

Level 3 Expert

1113 Answers

Ron Dufek
Ron Dufek

Level 3 Expert

398 Answers

Are you a Brother Office Equipment and Supply Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...