OPERATION
Menu Control with Key Switch (C) and Key Group
(D)
Display of Menu Options
Example: Display of INPUTS-OUTPUTS, starting from basic
display on level -0-, see Menu Control Charts I and IV (Z 23066).
The main group *INPUTS-OUTPUTS* is basically used for Test-
ing procedures through authorized service staff and therefore
locked during normal operation. Access to the *INPUTS-OUT-
PUTS* can be obtained in the main group *SERVICE* as
described below.
Proceed as follows:
1. Press the "QUI" key (10), the menu level -1- *TRUCKS*
appears on the display, see Chart I.
2. Press key (12) three times, the main group *SERVICE*
appears on display.
3. Press key (10), the menu level -2- with the starting group
*Language* appears on the display.
4. Press key (12) four times, the group *INPUTS-OUTPUTS
ON/OFF* appears on the display.
5. Press key (10), the menu level -3- with Menu item INPUTS-
OUTPUTS Condition: 0 (OFF)" is displayed.
6. Press key (12), *OPERATE KEY SWITCH* appears on the
display.
7. Operate key switch (C) "Condition: 0 (OFF)" appears on the
display.
8. Press key (12) to change the condition from "0" to "1 (ON)"
Now access to main group *INPUTS-OUTPUTS* is possible.
9. Press the "RET" key (9) two times for returning to the menu
level -1-. The main group *SERVICE* appears on the display.
10. Press key (12), for display of the main group
"INPUTS-OUTPUTS*.
All menu levels and items within the main group INPUTS-
OUTPUTS are now accessible by means of key group (D),
refer to menu control charts on the following pages.
3.4 ELECTRONIC MONITORING AND CONTROL SYSTEM ECS
141