59
Service Manual – SC8000
Electrical System
Functional Description
Overview
The electrical system consists of the fuse, relay and circuit breakers not covered in the
Control System
section or the other manual sections.
Power Supplies
Circuit Description
• The
100-amp Fuse F1
must be closed to provide positive battery voltage to the entire electrical system.
• The circuit breaker
CB6
must be closed to provide voltage to the
Key Switch S1
.
• The
Ignition Key Switch S1
must be on to provide positive battery voltage to the
K1 Relay Coil
and certain
inputs on the
Driver Box
.
• The circuit breakers
CB1
,
CB2
,
CB3
,
CB4
and
CB5
must be closed to provide voltage to the side broom
actuator, lighting systems, electric pump motors and solenoid valves.
S1
POWER RELAY
KEY SWITCH
PIN J2-1
K1
RELAY COIL
F1
FUSE
100A
BAT (-)
K1
B+
SUPPLY
CB1
CB2
CB3
CB4
CB5
B-
OUTPUT
IGN RUN (ON)
12V DC
BATTERY
CB6
15A
BLU/GRN
ORN/GRN
VIO/GRA
RE
D
RED/VIO
K1 POWER RELAY ON
DRIVER
BOX
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