Doosan DX220A Operation And Maintenance Manual page 86

Communication Error Warning
If a communication error is generated between e-EPOS
controller and instrument panel, this symbol will be displayed.
When this symbol is displayed, contact a DOOSAN distributor or
sales agency.
NOTE: If a communication error occurs during operation, the
last mode setting is stored. e.g. power mode, work
mode and auto idle are stored during failure.
NOTE: When starter switch is turned to the "I" (ON) position
during a state of communication error failure, the
e-EPOS controller will default to the following modes.
Power mode: Standard mode
Working mode: Digging mode
Auto idle: "ON" (Selection state)
Engine Speed
The engine speed is numerically displayed.
Battery Voltage
The battery voltage is numerically displayed. With the engine
running, the reading should be between 26V - 30V.
When the starter is engaged or the preheat system is being
used, the voltage can temporarily drop below 24V, but this is a
normal condition.
Operating Controls
2-26
Figure 50
1700
E/G SPEED
Figure 51
28.0
BATTERY
Figure 52
FG000048
RPM
FG000049
VOLT
FG000050
OP001760