Troubleshooting
Section
4-5AB46 Work Platform
4.2
Table 4-2 Troubleshooting Guide - Electrical Schematics - (continued)
Component .
.
.
.
Function
Engine Run
Upper Controls
Engine Run
Lower Controls
Engine Start
Upper controls
Engine Start
Lower Controls
Steer Right
Steer Left
Riser Elevate
Riser Descend
Boom Extend
Boom Retract
Boom Raise
Boom Lower
Jib Up
Jib Down
Cage Level Up
Cage Level Down
Cage Rotate
Cage Rotate CW
Slew CCW
Slew CW
Drive
Diff Lock Drive
Parking Brake
Release
Tilt Alarm
Tilt Light
Lower Cage rotate Switch XX
Lower Trim Switch
XX
Lower Jib Switch
XX
Lower Boom Elevate Switch
XX
Lower Boom Extend Switch
XX
Lower Riser Switch
XX
Diode DB16
XXXXXXXX
Diode DB8
XXXXXXXX
Diode DB8.1
XXXXXXXX
Boom Speed Relay
coil
XXXXXXXX
Boom Speed Relay
contacts
Turtle / Rabbit Knob
XXXXXXXX
Diode DB17
XXXX
Diode DB18
XX
Foot Switch
XXXXXXXXXXXXXXXXXX
Boom Disconect Relay
Upper Turret Rotate Switch
XX
Upper Cage rotate Switch
XX
Upper Trim Switch
XX
Upper Jib Switch
XX
Lower Boom Elevate Switch
XX
Upper Boom Extend Switch
XX
Upper Riser Switch
XX
Turret Drive Relay
contacts
XXXX
Boom Disconnect Relay
contacts
XXXXXXXX
Diode DB7
XXXXXXXX
Diode DB6
XX
Diode DB11
XXXXXX
Diode DB3
XXXX
Diode DB2
XXXX
Diode DB9
XX
Diode DB23L
XXXXXXXXXXXXXXXXXX
Diode DB23R
X
Diode DB24
X
Speed Control Knob
XXXXXXXXXX
Boom Speed Relay
contacts
XXXXXXXXXX
Boom Speed Relay
coil
XXXX
Drive Enable Relay
coil
X
Drive Enable Relay
contacts
X
Steer Right Switch
X
Steer Left Switch
X
Diff Lock Switch
X
Down Relay
contacts
XX
Down Relay
contacts
X
Down Relay
contacts
XX
Boom Extend Drive Interlock Switch
XX
Forward Proportional Valve
XX
Reverse Proportional Valve
XX
Brake Relay
coil
XX
Brake Solenoid Valve
XX
Brake Relay
contacts
XX
Boom Disconnect Relay
coil
XX