User-Access To The Maintenance Mode; User-Access To The Maintenance Mode - Brother MFC-9420CN Service Manual

8.1.3

User-access to the Maintenance Mode

Basically, the maintenance-mode functions listed on the previous page should be accessed by
service personnel only. However, you can allow end users to access some of these under the
guidance of service personnel (e.g., by telephone).
The user-accessible functions (modes 06, 09, 10, 11, 12, 52, 53, 54, 80, 82 and 87) are shaded in
the table given on the previous page. Function code 10 accesses the firmware switches, each of
which 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 Appendix 4.
The service personnel should instruct end users to follow the procedure given below.
(1) Press the Menu/Set, Black Start, Menu/Set, and
TIP: For the FAX models equipped with numerical keypads, you may press the Menu/Set,
Black Start, and 0 keys instead in the same way as conventional models.
The "MAINTENANCE 06" appears on the LCD.
(2) Press the
Then press the Menu/Set key.
(3) To switch the machine back to the standby state, press the Stop/Exit key. When each of the
user-accessible functions is completed, the machine automatically returns to the standby
state.
key or key several times to display the desired maintenance code on the LCD.
keys in this order.
Menu/Set ke y
and
Fig. 8-1
8 - 3
Stop / Exit ke y
ke y s
Start ke y
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