5-49
Confidential
1.4.21 Laser unit test pattern print (Function code 68)
<Function>
This function allows you to print the laser unit test patterns and check if there is any failure in
the laser unit.
<Operating procedure>
(1) Press the 6 and 8 buttons in this order in the initial state of the maintenance mode.
"PRINTING" is displayed on the LCD, and one laser unit test pattern (refer to the figure
below) is printed.
(2) When this operation is completed without an error, "SCANNER CHECK" is displayed on
the LCD.
(3) Press the Stop/Exit button to return to the machine to the initial state of the maintenance
mode.
When an error message is displayed on the LCD, take the measures described in the
table below.
* # indicates the toner color (K, Y, M, or C) of which cartridge became empty.
■ Laser unit test pattern
Fig. 5-25
Note:
When printing fails, a relevant error is displayed on the LCD. When the error factors
are removed and the Start/Black button is pressed, the machine automatically
recovers to the re-executable state. "PRINTING" is displayed on the LCD, and the
laser unit test pattern is printed on a sheet.
Error message Measure
TONER EMPTY # * Replace the empty toner cartridge and press the Start/Black
button to clear the error.
Cover is Open Close the front cover.
No Paper Replenish paper of the A4-size paper specified in the display
on the tray. Press the Start/Black button to clear the error.
Jam Tray1 Remove the jammed paper, and press the Start/Black
button to clear the error.
Jam Rear
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