5-5
Confidential
Open 2 1 Maintenance printing 1.4.12
2 Print maintenance data and 
frame pattern
1.4.13
3 Invalid
-
4 Factory use (disabled)
-
5 to 9 Invalid
-
10 Change Ready LED light 
intensity in sleep mode
1.4.14
11 Invalid
-
12 Reset irregular power supply 
detection counter of low-voltage 
power supply PCB
1.4.15
13 or more Returns to the ready state
-
3 1 Factory use (disabled)
-
2 Factory use (disabled)
-
3 Factory use (disabled)
-
4 to 8 Invalid
-
9 Factory use (disabled)
-
10 to 11 Invalid
-
12 Factory use (disabled)
-
13 or more Returns to the ready state
-
4
-
Firmware installing mode
1.4.16
51
Factory use (disabled)
-
61 or more
Returns to the ready state
-
7
-
Factory use (disabled)
-
81 or more
Returns to the ready state
-
9
-
Factory use (disabled)
-
10 or more 1 or more
Returns to the ready state
-
Press and hold 
over 2 seconds
-
Ready state of maintenance 
mode for service personnel
1.4.17
Front 
cover
No. of times [Go] key is 
pressed to enter 
maintenance mode
No. of times [Go] key 
is pressed to select 
function
Function
Refer 
to: