Faults In The Printer Unit - Canon FAXPHONE L75 Service Manual

3.3.3 Faults in the Printer Unit

You can check the LBP status using the machine's test mode.
An LBP status is indicated by means of a 16-bit signal that represents the condition of the inside of the
printer generated by the CPU mounted on the SCNT board.
If the display indicates "CHECK PRINTER," check the LBP status as follows to find out the cause of the
fault:
a) LBP Status Display Procedure
To display the status, bring out the FACULTY TEST menu in test mode, and press key "3" on the keypad
to select the sensor test function. (The display will be as follows.)
6-3 : SENSOR
[1] - - - [6]
When the4, 5, or 6 key is pressed, the status is displayed.
Pressing the 4 key.
0:4041 1:0001
Pressing the 5 key.
16:4000
27:6100
Pressing the 6 key.
73:1005
Status number
Status data
Status data
Status data
Status data
16:4000 27:6100
LASER CLASS 1060P Chapter 4: Maintenance & Service
If the printer unit fails, LBP status number 16 used.
Alternately
displayed
9:0001
Alternately
displayed
51:0025 53:0002
Figure 4-7 LBP Status Diaplay
4-31
11:0001
LBP status is displayed.