4 — MAINTENANCE
4-17
CAUTION
Integrated circuits can be damaged by static electrical discharge. When touching
or handling circuit boards, wear an anti-static wristband grounded to a boom lift
ground lug. When replacing a circuit board, stand on a grounded anti-static floor
mat. Always seal circuit boards in static shield bags for storage and transport.
Failure to use anti-static discharge protection can cause permanent damage to in-
tegrated circuit components.
Table 4-5. LED Indicators
Indicator Function Color
D12 +5 Volt Regulated Supply Red
D16 Communications Active Green
D49 Upper Boom Down Output Red
D50 Upper Boom Up Output Red
D51 Motor Run Output Red
D52 Tilt Alarm Output Red
D53 Spare Red
D54 Lower Boom Down Output Red
D55 Lower Boom Up Output Red
D56 Rotate CCW Output Red
D57 Rotate CW Output Red
D58 Emergency Down Output Red
D59 Outrigger Light Output Red
D60 Hour Meter Output Red
D61 Proportional Flow Output Red
D62 Engine Choke Output Red
D63 Engine Start Output Red
D64 Engine Stop Output Red
D65 Accessory Power Output Red
D67 Fuse Light Red
Note: D16 should light when power is first turned on (following
the control system self-test). A lighted red LED indicates a fault.
Table 4-6. Upper Control Box Specifications
Power Supply Voltage 12V/24V nominal, 7V to 35V transient
Operating Temperature -40°C to +85°C
Storing Temperature -40°C to +100°C
Digital Inputs 12/24V DC, 60V transient
Analog Inputs 0 to 5V DC, 60V transient
