Heyer Modular+, Service Manual

Page: 79 / 114

Preventive Maintenance
79
4.6.2 Coefficient programming
4.6.2.1 O
2
sensor calibration
1
Enter the Service Software by pressing the following keys prior to the end of the startup routine:
a
SET
b
OPT.
c
d
OK
2
Select KEYCODE to enter the diagnostic screens.
3
Enter a valid key code to invoke the service software.
Advance from this window to the main menu by pressing ENTER.
4
Select O
2
sensor to enter the O
2
sensor screen.
Note: This test should be performed using a new and acclimatized O2 cell.
Fig. 34 O
2
Calibration screen