Komatsu PC500LC-10R Shop Manual page 141

10 STRUCTURE AND FUNCTION
REMARK
• The machine monitor consists of the display and switch section. The display is LCD (Liquid Crystal Display),
and the switch section consists of flat sheet switches.
• If there is abnormality in the machine monitor, controller, or wiring between the machine monitor and control-
ler, the machine monitor does not display normally.
• The battery voltage may drop sharply when the engine is started depending on the ambient temperature and
battery condition. In this case, the display may disappear for a while, but it is not an abnormal phenomenon.
• If environmental temperature of the machine monitor is high, brightness may be automatically reduced to
protect the liquid crystal.
• Intensity or color of the objects may change because of the automatic adjustment function of the camera.
• See "Operation and Maintenance Manual" for the following items.
• Display (screen display)
• Switches
• Guidance icons and function switches
INPUT AND OUTPUT SIGNALS OF MACHINE MONITOR
070-18P "CM01"
Pin No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
*1: Never connect these pins. Malfunctions or failures may occur.
070-12P "CM02"
Pin No.
1
2
3
PC500LC-10R
Continuous power supply (24 V)
Continuous power supply (24 V)
GND (continuous power supply)
GND (continuous power supply)
External starting signal
Starting motor cut-off relay (for personal code)
(*1)
System operating lamp
Lamp switch
Starting switch (ACC)
Starting switch (C)
Preheating
Engine shutdown secondary switch
(*1)
Fuel level sensor
Charge level (alternator terminal R)
(*1)
(*1)
Seat belt alarm switch
Engine oil level sensor
Radiator coolant level sensor
COMPONENT PARTS OF CONTROL SYSTEM
Signal name
Signal name
Input/output signal
Input
Input
-
-
Input
Output
-
Input/Output
Input
Input
Input
Input
Input
-
Input
Input
-
-
Input/output signal
Input
Input
Input
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