One side keys are not responding.-gh/ appearing if press any key

This is a fusing unit error. sometimes is occur by not warm up on time, and sometimes is real problem and need some part in the fusing unit to be replaced. You can try to reset it in service mode and then if machine works its ok. But if it comes again, then a visit by technician is a must. To reset the sc561 you will need to do the following procedure. First of all you need to enter into service mode. To enter into service mode you need to press the following keys on order with no rush. Press the yellow key(clear); then press the blue keypad numbers: ( 1-0-7 ) ; then press and hold for 5 seconds the red key (stop). The touch screen will change into service mode. On the touch screen press [copy sp] ; then on the blue number key pad press the following numbers: ( 5-8-1-0 ) then press the blue key { # }. On the touch screen in the right side will appear a [EXECUTE] press on it and wait to write on the screen [COMPLETED] . After it write [COMPLETED] turn off the machine by the red switch located on the middle-front of the machine left side from the first paper tray. Turn it off and wait for 10 seconds and then turn it on again. Wait for it to get ready. If it get to ready mode, everything is its okey. But if the SC561 code appear again or some similar SC code appear like SC541-542-544 etc. then a visit from a technician must me made to replace some parts in the fusing unit that are wasted.

This is a fusing unit error. sometimes is occur by not warm up on time, and sometimes is real problem and need some part in the fusing unit to be replaced. You can try to reset it in service mode and then if machine works its ok. But if it comes again, then a visit by technician is a must. To reset the sc561 you will need to do the following procedure. First of all you need to enter into service mode. To enter into service mode you need to press the following keys on order with no rush. Press the yellow key(clear); then press the blue keypad numbers: ( 1-0-7 ) ; then press and hold for 5 seconds the red key (stop). The touch screen will change into service mode. On the touch screen press [copy sp] ; then on the blue number key pad press the following numbers: ( 5-8-1-0 ) then press the blue key { # }. On the touch screen in the right side will appear a [EXECUTE] press on it and wait to write on the screen [COMPLETED] . After it write [COMPLETED] turn off the machine by the red switch located on the middle-front of the machine left side from the first paper tray. Turn it off and wait for 10 seconds and then turn it on again. Wait for it to get ready. If it get to ready mode, everything is its okey. But if the SC561 code appear again or some similar SC code appear like SC541-542-544 etc. then a visit from a technician must me made to replace some parts in the fusing unit that are wasted.

https://www.youtube.com/watch?v=LmFsGb4fVQk

There should have been a recovery disk created or included when you bought a laptop. Insert disk if you have it and restart your computer with the recovery disk in the CD drive. Make sure all your documents and personal data are backed up. When the computer restarts it should start restoring your computer to the factory default. There will be a wizard to guide you through the process.
If there is no disk or got lost,then follow this steps:
1.Save any files or folders on your computer with flash drives. Drag and drop files onto the icon of your flash drive.
2.Go to "Start" > "Restart" to reboot your netbook.
3.Hold down "Alt" and "F10" when you see the logo on the screen. The recovery menu will load.
4.Hit "Enter" and then "Next" to see your recovery options. Choose "Factory Restore" to set your computer back to factory settings. Follow the instructions on the screen.
5.Choose your time zone and language when the customization menu appears. Reboot when you are prompted.
6.Restore your saved files from the flash drive.

hope this helps,Goodluck..pls response with your rate and testimonials below for further issues..thanks

Hi, there is no error 4 alone it is usually followed by a H that is H4. Try to key in the following C Auto C Auto then enter 14 and press Copy key. If it was power low voltage , it will not re-appear but if it comes back then replace heater lamp and reset again.

f the keys on the control panel do not respond or triple beep when youpress them follow the steps listed below:1. Unplug your machine from the electrical outlet, wait 30 seconds and then plug it back in.
2. Verify the date and time are displayed on the LCD.
a.If the date and time show on the display, continue to step 3.
b. If the LCD displays an error message (example: paper jam) or status message (example: ink empty), refer to the necessary solution for the message that is appearing on the LCD.
c.f the display is blank, verify the power cord is connected. If the power cord is connected to a surge protector or power switch, remove thecord from the device and connect it directly to the outlet. Next, verifythe unit is powered ON. The MFC has an ON/OFF key located on the right side of the unit. In OFF mode the display will be blank. If the display is still blank, try a different known working electrical outlet at your location. If the display still remains blank and your machine iswithin warranty, you can locate a Brother Authorized Service Center (ASC) in your area using one of the following:
Click on:
http://www.brother-usa.com/support/and then click on the "Service Center Locator" option located on the left side of the page or for automated assistance by telephone, dial 1-800-284-4357 and select Option2 to access our fax back system. This system can provide you a printed list via facsimile or verbal listings of a Brother ASC in your area. Youmay also contact Brother Customer Service at 1-800-284-4329 Monday through Friday, 9:00am - 7:00pm EST, excluding holidays. If you are outof warranty, you need to contact a Brother Authorized Service Center using the information listed above.
3. There are 3 Mode keys located below the LCD display, PHOTOCAPTURE, FAX, SCAN and COPY. The correct mode key must be illuminated in green when attempting to access or program one of these functions (faxing, copying or scanning). Examples: If you try to access the "Setup Receive"or "Setup Send" menu's, make sure the FAX mode key is illuminated in green. If not, press it to turn Fax Mode "ON". If you are trying to make a copy, make sure the COPY mode key is illuminated in green. If not, press it to turn the COPY mode "ON". If the correct mode key is notilluminated in green when attempting to access specific functions, the keys on the control will triple beep when pressed.
4. Press the keys to see if they respond. For example: if you press the MENU/SET key the menu options should be displayed on the LCD. If you press the HOOK key, you should hear a dial tone (provided the speaker volume is set at an audible level, and the line connections are correct).
5. If every key still triple beeps or does not respond, gently massage each key on the control panel in a circular motion to dislodge any stuckkeys. You should do this regardless of whether or not any of the keys appear to be stuck. Then test the functionality of the control panel again, using either the MENU/SET or HOOK key, as outlined in STEP 4.
If none of the keys are stuck, or if freeing a stuck key did not restorethe control panel#s functionality and your machine is within warranty, you can locate a Brother Authorized Service Center (ASC) in your area using one of the following:
Click on:
http://www.brother-usa.com/support/and then click on the "Service Center Locator" option located on the left side of the page or for automated assistance by telephone, dial 1-800-284-4357 and select Option2 to access our fax back system. This system can provide you a printed list via facsimile or verbal listings of a Brother ASC in your area. Youmay also contact Brother Customer Service at 1-800-284-4329 Monday through Friday, 9:00am - 7:00pm EST, excluding holidays. If you are outof warranty, you need to contact a Brother Authorized Service Center using the information listed above.

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Step 1: Opening a command promptThis error prevents Windows XP from opening. This problem has to be addressed from a command prompt environment. Use the following steps to open a command prompt environment:

1. Turn on the PC and press the F8 key repeatedly when the first screen appears.The Windows advanced options menu appears.
2. Use the Up and Down Arrow and Enter keys to select Return to OS choices .
3. Select Microsoft Windows Recovery Console .
   NOTE: If "Microsoft Windows XP Recovery Console" is not listed, restart the PC with a Windows XP CD, Recovery Console CD, or Recovery Tools CD in the top CD or DVD drive and open Microsoft Windows Recovery Console. If a Windows XP Setup screen appears when using Recovery Console CD's, press the R key to open the Recovery Console.
   NOTE: If "Microsoft Windows XP Recovery Console" does not list and you do not have a CD with recovery console, try the following:
   1. Turn on the PC, and press the F10 key repeatedly at the first screen.
   2. At the Recovery screen, click Advanced Options .
   3. Press the Alt + D keys at the same time to open a command prompt window and skip to step 5.
4. When the log in prompt appears, press the number next to the windows version (min int or Windows) and type the log on password. Try pressing Enter if you do not know the password.
5. At the command prompt, type the following: disk part
6. Press Enter , do one the following:
   • If a table of volume names appears, remember the drive letter next to the main drive volume name (usually D or H next to HP_PAVILION or PRESARIO) and press the Esc key.
   • If a disk part prompt appears, type list volume , press Enter , remember the drive letter next to the main drive volume name (usually D or H next to HP_PAVILION or PRESARIO), type exit when done, and then press Enter .
   
   NOTE: If the main drive volume name does not appear in the list, the PC needs to be recovered. For more information, refer to Performing a Full System Recovery in XP .

Step 2: Replacing the file from a backup folderUse the following steps to find and replace the L sass file from the command prompt environment:

1. Type the following at the command prompt: CD X:\i386 (where X is the main drive letter)
2. Press the Enter key. If the error The system cannot find the path specified appears, enter the following paths, in order, until the error does not occur:
   • cd X:\Windows\i386 (where X is the main drive letter)
   • cd c:\i386
   • cd c:\Windows\i386
3. Press the Enter key, and type the following at the command prompt: expand lsass.ex_ X:\windows\system32 (where X is the drive letter)
4. Press the Enter key, and type the following at the command prompt: cd X:\windows\system32 (where X is the drive letter)
5. Press the Enter key, and type the following at the command prompt: attrib lsass.exe -r
6. Press the Enter key, and type the following at the command prompt: rename lsass.exe lsass.bak
7. Press the Enter key, and type the following at the command prompt: rename lsass.ex_ lsass.exe
8. Press the Enter key, and type the following at the command prompt: exit
9. Press Enter and the PC restarts without the error. If the error persists, go to the next step.

Step 3: Recovering the PC If the error still continues, recover the PC .

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Please follow this instructions; i don't know whether you've disconnected or not but it's been disconnected from my side. So i just wanna give some more hints to fix your problem;

Press the Menu key on the control panel.
Press the Up or Down Arrow key until Fax appears on the LCD.
Then, press OK.
Press the Up or Down Arrow key until Remote Fax Opt or
Advanced Fax Operation appears and press OK.
Press the Up or Down Arrow key until Fwd/Page/Store or
Forward/Store appears and press OK.
Press the Up or Down Arrow key until Off appears and press OK.
If you have faxes stored in the memory, you will receive a message that reads Erase All Fax? 1. Yes 2. No.

If you want to erase all the faxes in the memory without printing them out, press 1 (Yes) and then press Stop/Exit.
Or
If you would like to reprint the saved faxes, press 2 (No), press
Stop/Exit and continue to the following steps for instructions on how to print stored faxes.
If you do need the features that require Fax Storage to be On, the stored faxes will need to be erased or printed to remove them from the memory and to allow additional memory to be available. Follow these steps to print the stored faxes:
Press the Menu key.
Press the Up or Down Arrow key until Fax appears on the LCD.
Then, press OK.
Press the Up or Down Arrow key until Remote Fax Opt or
Advanced Fax Operation appears and press OK.
Press the Up or Down Arrow key until Print Fax or Print Document appears and press OK.
Press Black(Mono) Start.
After printing is finished, press Stop/Exit.
Good luck. Thanks for using FixYa.

check all the side key, try unscrew the phone, remove the all side key and paste the side key wel

Do the following steps:

1. Press and Hold Fn then Press Numlock/Scroll lock, if it works then good.
2. otherwise Press and Hold Shift Key then Press Numlock/Scroll lock.

If still problem just Ask me

Thanks
Iqbal