Brother MFC990CW Service Manual page 452

Appendix 4. Firmware Switches (WSW)
This appendix describes the functions of the firmware switches, which can be divided into two groups:
one is for customizing preferences designed for the shipping destination (as described in Appendix 3)
and the other is for modifying preferences that match the machine to the environmental conditions. Use
the latter group if the machine malfunctions due to mismatching.
Note: Each of the firmware switches has eight selectors. You should not allow end users to access all of
those selectors, but you can allow them to access user-accessible selectors which are shaded in the
firmware switch tables in this appendix.
Note: The firmware switch setting procedure is given in Chapter 9, Section 9.1.4.5 (Function code 10).
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