Epson CW3S16 Operation Manual page 147

There are several headers on the motherboard but most of
them are already factory setting and you should not remove
them.
Note
If you have problems setting the system CPU configuration
headers, contact your dealer for assistance.
When you turn the system power on, the system CPU will
compare these settings with the information stored in its
configuration RAM as part of the diagnostic routines. If any
inconsistencies are found, they will be shown on the display
monitor before MS-DOS is loaded. At that time, you will be
prompted to run the SETUP program to change the options
stored in the configuration RAM. It is important that these
settings describe the actual equipment installed on your
computer system.
B-2
System Mother Board
Figure B-2. Installing the Motherboard