EP Equipment EPT20-15ET, Service Manual

Page: 61 / 128

50
REV. 09/2016
OPERATING SYSTEM
6
Lowering Switch Control Circuit
(Figure 30306)
Check if the circuit is broken by using a multi-
meter:
-
-
-
Set the multimeter to ON-OFF;
Check if #1 circuit (circuit between lowering
switch and key switch) is conducted;
Check if #3 circuit (circuit between lowering
switch and solenoid valve) is conducted.
Solenoid Valve
Key Switch
Horn Switch Control Circuit
(Figure 30307)
Check if the circuit is broken by using a multi-
meter:
-
-
-
Set the multimeter to ON-OFF;
Check if #1 circuit (circuit between horn swit-
ch and key switch) is conducted;
Check if #4 circuit (circuit between horn swit-
ch and buzzer) is conducted.
Key Switch
Buzzer
Buzzer Checks
Energize the buzzer with a voltage of 24V:
Buzzer sounds, it is working properly;
Buzzer does not sound, it failure, needs to be
replaced.
Emergency Reverse Switch Control
Circuit (Figure 30311)
See Section 6.3.4 .