Need to find out what code # for my safe BW-615756

The key should open the safe in any circumstances.

All safes of this type have a 4 number combination.

They are very insecure and can be open using a Rare Earth Puck Magnet. Then you can remove the batteries, and reset the code.

I think you have given us the Serial Number not the Model Number?

Check Your Safe ' SentrySafe

https://www.sentrysafe.com > Support
Enter Your Serial Number. Enter the serial number of your electronic fire safe in the space provided below to determine if you need to read an important ...
Missing: 633639 ‎' Must include: 633639

• 
  

  Customer Support ' SentrySafe

  https://www.sentrysafe.com > support
  Guides to safe setup, troubleshooting, and other support needs. View Videos. Sign up for updates and Offers from SentrySafe. New subscribers get 10% off ...

https://www.google.com/search?q=Locked+out+of+Sentry+BW-633639

..

go here: http://www.sentrysafe.com/CustomerCare/Product_Manuals

Hello,

"EF error" in Fujitsu fi-5120c scanner refers to Background changeover unit failure. This error is detected in initial checking at power on.
Probable causes:
- Defective Control PCA
- Insulation material damage of BW motor cable or the damage of the wire in the motor.
Check the followings:
1.Does the same symptom occur after turning OFF and ON the scanner?
2.Are the cables between the Control PCA and the BW motor damaged? Or are the connectors connected correctly? Confirm the position of the BW motor and check the cables.
3.Is the CCD cable F or B damaged? Or are the connectors connected correctly?

If the above information doesn't help, then you are recommended to visit the nearest Fujitsu service center for assistance.

Thanks & regards,
ScanCare

Hi,

The error code EF displayed on your fi-5750c scanner front panel explains Background switching mechanism alarm. The probable causes are:- Background detection sensor connector disconnected.
- Defective background detection sensor
- BW motor connector disconnected, Defective BW motor
- Defective background unit F
- Defective background unit B

You are rceommended to visit nearest Fujitsu service station for rectification.

Thanks & regards,
ScanCare

Big Button BW-1220US have setup code for Sansui. If you want more details check these links. There is setup codes and procedure to many remote controls. Check them, and choose one remote control, which have setup codes to Sansui. Sometimes, the above said brand remote control cannot be available to your area.

Repair fuser and reset code

You will need to replace the empty color cartridge to get the flashing to stop.

However you should still be able to print in BW. Check that the applications you are running are set to
BW and not color in the configuration menu. That should permit you to print in BW only.

You have a defective controller board or defective engine board.

Shut the pump off, then push down on the backwash (BW) handel turn it clockwise 180 degrees to BW and start pump again. Run pump till water coming from BW pipe runs from cloudy to clear. Shut the pump off and pushing down on the BW handel again turn it 180 degrees to filter and start pump again.

Actually, this problem can be fix going to power management under control panel. You have to log in in safe mode in order change configuration. It displays stand by monitor and you choose the time that you see fit.