User-Access To The Maintenance Mode - Brother MFC4820C Service Manual

7.4 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 may allow end users to access some of these under the
guidance of service personnel (e.g., by telephone).
The user-accessible functions (codes 10, 11, 12, 53, 54, 65, 66, 76, 80, 82, 87, and 91) 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
may 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 and Redial/Pause keys in this order.
The LCD clears the current display.
NOTE: The Redial/Pause key is disabled during standby for redialing and timer.
(2) Press the 0 key.
(3) Enter the desired function code (10, 11, 12, 53, 54, 65, 66, 76, 80, 82, 87, or 91) with the
numerical keys.
For function code 10, access the desired firmware switch according to the operating procedure
described in Appendix 4.
(4) To make the equipment return to the standby state, press the Stop/Exit key.
Redial/Pause key
Stop/Exit key
Menu/Set key
7 -5
0 key