Electrical system – 5000 Functional description T-code 795
Valid from serial number 904526-
Date 2006-04-10
Order number 235568-040
10.8 Functional description 10.8.1 Theory of operation This section describes basic theory of operation of the truck’s main functions in tabular form. It describes, in simple terms, what happens when performing any of the truck’s main operations. • Event - The main stages in performing any of the truck’s main functions are referred to as “Events”. Each event is numbered. • Preceding event - Indicates the event number which must have taken place immediately before in order for the current event to function correctly. • Action(s) - A required action from the operator for the event to occur. • Influencing elements - conditions which must be fulfilled in order for the event to occur. Certain parameter settings may also affect the outcome of the event. • Resulting conditions - Describes key occurrences which can be checked to confirm that a function operates correctly. • Logic - Shows the logic relationship between inputs and outputs relating to a specific event. Note that “resulting conditions” show what is expected when no error conditions are present.
Table 10: Theory of operation Event:
1. Battery connected
Preceding event
-
Action(s)
Insert mains plug for charger [A30] in the start interlock device [S170].
Influencing elements
Operating circuit fuse ok [F50]. Emergency switch-off not depressed [S21].
Resulting conditions
Truck is ready for switch-on. Quick-test: press signal horn button [S18]! Signal horn shall sound.
10- 14
Service Manual
SP10, SP10S
© TIEE SARL
