8.3 USER-ACCESS TO THE MAINTENANCE MODE; Start ; 8.3 USER-ACCESS TO THE MAINTENANCE - Page 160

  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