Error
Code
Description
Solution
2
Missing or failing µSD card
Replace the µSD card
3
Incorrectly formatted µSD card or
corrupted FAT32 file system
Reformat the µSD to FAT32 and copy all
NW7 files on it. Files are available on
www.pinball-technology.com
4
Invalid or corrupted system file
Copy the system file again
5
Invalid system file
Copy the system file again
6
Missing system file
Copy a system file to the system folder
7
Missing or failing Flash memory Contact your reseller
8
Incompatibility between
hardware and firmware
Install a compatible firmware version
9
Wrong selected game
Check the Game Select switches
10
Game load error
Contact your reseller
If the sound does not work :
Check the settings on the Sound Select switches using the Williams instruction
manual.
Check the connection of 10J2 and 10J4.
Check the impedance of the speaker using a multi-meter : 2 Ohm, 4 Ohm or 8 Ohm.
As a last resort, cut the metal braid linking the speaker and the ground.
18