Brother FAX4750 Service Manual page 109

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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, 82, 87 and 91) are shaded in the table given on
the previous page. Function code 10 accesses the firmware switches WSW01 to WSW42, 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 Subsection 3.5.
The service personnel should instruct end users to follow the procedure given below.
(1) American models: Press the Function and Mode keys in this order.
European models: Press the Menu and Mode keys in this order.
The LCD clears the current display.
NOTE: The Mode key is inoperable during standby for redialing and timer.
(2) Press the 0 key.
(3) Enter the desired function code (10, 11, 12, 82, 87, or 91) with the numerical keys.
For function code 10, access the desired firmware switch according to the operating
procedure described in Subsection 3.5.
(4) To make the equipment return to the standby state, press the Stop key.
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Function/Menu key
0 key
V - 3
Mode key
Stop key