5-50
Confidential
*1
01 to 10 will be displayed for "##" in chronological order. Pressing the [SET] or [OK] key 
while the machine error log is displayed shows "PGCNT:00000000" (total pages printed at 
the time of the error) on the LCD.
*2
The serial number can be changed according to the procedures below.
*3
For models without fax, the LCD displays "TTLLIST:00000000" (List pages printed).
*4
Pressing the [SET] or [OK] key while the replacement count by consumables is displayed 
shows "DATE_XX:000000" (XX: name of consumables) and the date of replacement on the 
LCD. (Models without RTC does not display the replacement date.)
*5
Pressing the [SET] or [OK] key while the communication error is displayed shows 
"DATE:0000000000" and the date of replacement on the LCD. (Models without RTC does 
not display the replacement date.)
*6
01 to 10 will be displayed for "##" in chronological order. Pressing the [SET] or [OK] key 
while the machine error log is displayed shows "TM:00000 BT:000" (TM: minutes passed 
from the previous error, BT: number of times that the power is turned ON/OFF) on the LCD.
*7
01 to 10 will be displayed for "##" in chronological order. Pressing the [SET] or [OK] key 
while the log for design analysis is displayed shows "PGCNT:00000000" (total pages printed 
at the time of the error) on the LCD.
For models without keypad
1) Press the [▲] or [▼] key while the 
serial number is displayed to 
display "9" on the LCD, and press 
the [OK] key. LCD displays the 
serial number again.
2) Enter the [4], [7] and [5] in this order 
as described in the procedure (1). 
Serial number is displayed on the 
LCD. The first digit starts flashing to 
indicate that it is editable.
3) Press the [▲] or [▼] key to display 
the first digit of the serial number on 
the LCD, and press the [OK] key. 
The second digit starts to flash. 
Enter the second digit to the 15th 
digit similarly.
4) Press the [OK] key, and the serial 
number is saved. The machine 
returns to the initial state of 
maintenance mode.
For models with keypad
1) While the serial number is 
displayed, press the [9], [4], [7], and 
[5] keys in this order. The first digit 
of the serial number starts flashing 
to indicate that it is editable.
2) Use the keypad to enter the first 
digit of the serial number. The 
second digit starts to flash. Enter 
the second digit to the 15th digit 
similarly.
<Entry method of alphanumeric 
characters>
See the table below and press the 
corresponding key until the desired 
character is displayed.
3) Press the [SET] or [OK] key, and 
the serial number is saved. The 
machine returns to the initial state 
of maintenance mode.
Keypad Assigned characters
2 2→A→B→C
3 3→D→E→F
4 4→G→H→I
5 5→J→K→L
6 6→M→N→O
7 7→P→Q→R→S
8 8→T→U→V
9 9→W→X→Y→Z