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8-3 Confidential
8.3 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 (codes 06, 09, 10, 11, 12, 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.
MFC7420/7820N
(1) Press the Menu/Set , Start, Menu/Set , and
keys in this order.
TIP: For the FAX models equipped with numerical keypads, you may press the Menu/Set ,
Start, and 0 keys instead in the same way as conventional models.
The "MAINTENANCE **" appears on the LCD.
(2) Press the
key or key several times to display the desired maintenance code on the LCD.
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.
MFC7420/7820N
Stop/Exit key
Menu/Set key
and keys
Start key