Daedong DSC48, Workshop Manual, Page: 253 / 290

Apr. 2007
7
-13
DSC48
2.5 TROUBLESHOOTING
2.5.1 STRAW DISCHARGE ALARM
2.5.2 GRAIN ALARM
Symptom Cause Action
The straw discharge alarm
(buzzer, lamp and automatic
engine stop function) does
not operate • If the check lamp does not operate correctly when
turning the ignition switch to the "ON" position
- The MICOM unit is not supplied with power.
- Or faulty ground of the MICOM unit
• Faulty input signal from the threshing unit switch
(open circuit)
• Faulty input signal from the straw discharging
sensor (open circuit)
• If the straw discharge alarm does not operate
-
Faulty input signal from the threshing unit
switch (open circuit)
• Power to MICOM unit
• Ground of MICOM unit
• Input signal wire
• Input signal wire
• Input signal wire
The automatic engine stop
function does not operate. • AES relay
Power is not supplied to the engine stop motor.
• Faulty components related to the above relay and
motor
• Power
• Replace
The front buzzer does not
sound. • Power is not supplied to the front buzzer.
• Faulty front buzzer • Power
• Replace
No lamp comes on. • Power is not supplied to the instrument panel.
• Blown lamp bulb • Power
• Replace
After engaging the threshing
clutch, the automatic
engine stop function (straw
discharge alarm) operates. • Faulty input signal from the straw discharging
sensor (ground)
• Input signal wire
Symptom Cause Action
• The grain alarm (buzzer,
lamp) does not operate.
• If the check lamp does not operate correctly when
turning the ignition switch to the "ON" position
- The MICOM is not supplied with power.
- Or faulty ground of the MICOM unit
• Faulty input signal from the grain sensor (open
circuit)
• Faulty input signal from the threshing unit switch
(open circuit)
• Power to MICOM unit
• Ground of MICOM unit
• Input signal wire
• Input signal wire
• The front buzzer does not
sound.
• Power is not supplied to the front buzzer.
• Faulty front buzzer • Power
• Replace
• The grain lamp does not
blink.
• Power is not supplied to the grain lamp.
• Blown grain lamp bulb • Power
• Replace
• The front buzzer does not
stop even after pressing
the horn switch during
the alarm activated.
• Faulty input signal from the horn switch (open
circuit)
• Input signal wire