How do switch to scanner im on copier all time

it needs to install the drivers of the scanner

You are going to have to have it looked at by a trained printer tech.
Just from your description, it sounds like the scanner/copier assembly needs replacing.

unplug and let rest then replug and start again ( epson printers do this all the time)

1. Press the power switch to the OFF (O) position. The power switch is located on the lower, left side of the machine.
   
   
   
   
2. Pull the scan lock switch toward the front of the machine to unlock the Scanner.
   
   
   
   
   
   NOTE: The scan lock switch is located on the bottom of the Scanner Module. Make sure the scan lock is completely free. It sometimes hangs at the halfway point.
   
   
3. Press the power switch to the ON (|) position. A 'Warming Up, Please Wait' message will be displayed on the Display Screen. Warm up time is less than 40 seconds from power ON and less than 25 seconds from the Power Saver mode.

im trying to install my epson printer scanner have no disc can you help

A C30 code is as follows straight from the Tech Manual.
.Timing switch fails to turn ON 2.5
sec after scanner motor starts to
turn in normal direction.
.Home position switch fails to turn
ON 6 sec after scanner motor
starts to reverse.

Solutions:
.Defective scanner motor
.Defective timing switch
.Defective scanner motor
.Defective home position
switch

Also check the scanner rail some of the seals on the rail around were the motor sits turn to gunk and will stop the scanner assy from moving.

hi,I would try to make it scan using windows instead of pressing manual button should work.
go to control panel,select printer,select scan option.

Im sorry to be the one to tell you but the scanner is network only . you can try network again if you want and go here www.workio.com to get the latest drivers and progs

is ther firmware update to it go to www.hp.com suport area download latest drivers ok save to hardrive then remove old ones then install new ones from add remove in control panel ok after new driver hold power in unplug it then plug back in hold that power for 10 sec manaual reset also in the settings

okay, im assuming the brother all in one in the picture is what you're on about...right?!? anywayz :) basically i think it is because you have got "faxes saved in the memory" it sounds weird but the scanner locked is coming up because the scanner is not going back to its home position. if there are faxes in its memory, it means that the memory has not been cleared. to check press menu/set 9,0,1 - if the screen says "No data" means that the memory has been cleared and i don't know what to do!! if it says "Enter fax.no" means that there are faxes in the memory, in this case, the fax must be cleared of memory, (if you need the faxes, you must save them before proceeding) turning it off clears memory apparently but im assuming you've tried that countless times.Turn off the machine's power switch and then on again. If the error message continues, leave the machine for several minutes and try it again. the MFC-7820 can store memory for up to 4 days, so watch out if you have a 7820. apparently this will resolve the issue and the message should go away, hence the scanner returning to its home position!! hope this helps

user guide : http://www.topedge.ro/info/USER-GUIDE/BROTHER/MFC-7820N.pdf

11-3 is the scanner locked section
11-5 is the fax removal section