Daedong DSC48, Workshop Manual

Page: 254 / 290

7
-14 Apr. 2007
DSC48
2.5.3 NO. 1 ALARM AND NO. 2 ALARM
Symptom Cause Action
The No. 1 and No. 2 alarms
(front buzzer and lamp) do
not operate when the engine
speed is low. • 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 signals from both No. 1 and No. 2
rotation sensors
• Power to MICOM unit
• Ground of MICOM unit
• Input signal wire
• Input signal wire
The No. 1 alarm does not
operate when the engine
speed is low. • Faulty input signal from the No. 1 rotation sensor • Input signal wire
The No. 2 alarm does not
operate when the engine
speed is low. • Faulty input signal from the No. 2 rotation sensor • Input signal wire
The No. 1 or No. 2 alarm
operate when the engine
speed is high. • Faulty input signals from the No. 1 or No. 2 rotation
sensor (open circuit)
• Input signal wire
The front buzzer does not
sound. • Power is not supplied to the front buzzer.
• Faulty
front buzzer
• Power
• Replace
The No. 1 or No. 2 lamp
does not blink. • Power is not supplied to the No. 1 or No. 2 lamp.
• Blown No. 1 or No. 2 lamp bulb • Power
• Replace
2.5.4 REVERSE ALARM
Symptom Cause Action
• The reverse alarm
(buzzer) 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 shift lever switch (reverse
switch) (open circuit)
• Power is not supplied to the reverse buzzer.
• Faulty
reverse buzzer
• Power to MICOM unit
• Ground of MICOM unit
• Input signal wire
• Power
• Replace