Doosan DX225LC, Manual

Page: 11 / 136

Electrical System SP000935
Page 10
ELECTRICAL SUPPLY SYSTEM
The electric power circuit supplies electric current to each
electric component. It consists of a battery, battery relay, starter
switch, circuit breaker, fusible link and fuse box.
The negative terminal of the battery is grounded to the vehicle
body.
Even when the starter switch (5) is in the "OFF" position, electric
current is supplied to the following components through battery
(1)
o
fusible link (3)
o
fuse box (6).
1. Terminal "1" of DC-DC converter (for memory backup of
stereo)
2. Terminal "B" of starter switch
3. Hour meter
4. Engine controller
5. Fuel feeder pump switch
6. Terminal "6" of wiper motor
7. Terminal "13" of wiper controller
8. Terminal "CN6-11" of instrument panel
9. Terminal "CN9-6" of air conditioner panel
10. Cabin light
When the starter switch (5) is in the "ON or START" positions,
the current flows from the battery (1)
o
fusible link (3)
o
fuse
box (6)
o
"B" terminal of starter switch (5)
o
"BR" terminal of
starter switch (5)
o
"BR" terminal of battery relay (2) which
activates the coil of the battery relay and the electric supply
system is energized.
When the battery relay's contacts are connected, all electric
devices can be operated.
While the engine is not running, the electric power for all electric
devices are supplied by the battery. Once the engine is started
the power is supplied from the alternator (7).