Snorkel A38E - Page 65

Troubleshooting
Section
5-3A38E Work Platform
5.0
TROUBLESHOOTING TABLES
The next step is to refer to the Troubleshooting charts in tables.
Refer to Hydraulics section for detailed troubleshooting information on the pump/motor controller.
Read and understand the principles of operation before commencing any troubleshooting.
W A R N I N G
RISK OF SERIOUS INJURY.
The elevating assembly must be supported by an overhead hoist
when troubleshooting and servicing the electrical/hydraulic system.
MATRIX I/O
Sch. 15 500 410
AB 38 Rev 1
MP1-1 B+ supply
B+ supply
P1-2 B+ supply
P1-3 CANH
CANH
P1-4 GND
GND
P1-5 GND
P1-6 CANL CANL
P2-1 B+ Digital Input
P2-2 B+ Digital Input
P2-3 B+ Digital Input
Steer Left Sw.
P2-4 B+ Digital Input
Steer Right Sw.
P2-5 B+ Digital Input Trigger Sw.
P2-6 Analog Input
Joystick Hall effect output Direction & proportional control of selected function
P2-7 Analog Input
P2-8 B- protected Supply P2-8 & P2-11 share
the same PTC
P2-9 B+ protected Supply P2-10 & P2-12 share
the same PTC
P2-10 5V protected Supply (PTC 140mA) Joystick Hall effect supply
P2-11 B- protected Supply P2-8 & P2-11 share
the same PTC
Joystick Hall effect gnd
P2-12 B+ protected Supply P2-10 & P2-12 share
the same PTC
Joystick Sw's supply
P3-1 Mux digital input
Connect to commun of all function Sw's
P3-2 Mux digital input Moba Alarm output High when Overload
P3-3 Mux digital input
Overload Sw. 0V when overload
P3-4 Mux High side output Lower Boom function select
Sw.
P3-5 Mux High side output Upper Boom function select
Sw.
P3-6 Mux High side output
Tel Boom function select Sw.
P3-7 Mux High side output
Slew Boom function select
Sw.
P3-8 Mux High side output Basket Boom function select
Sw.
momentary SW's, function not latching, function activated if Sw.
closed and elevation Sw. closed
P3-9 Mux High side output Drive function select Sw.
P3-10 Mux High side output
P3-11 Mux High side output
P3-12 Mux digital input Moba lamp output pulse 1s ON, 1s OFF when 80% overload
P4-1 Low side 1A output
Buzzer ON when overloaded (P3-3 @ 0V)
P4-2 Low side 1A output
P4-3 Low side 1A output Overload lamp mimic P3-12 + flash quicker when overloaded (P3-3 @ 0V)
P4-4 Low side 1A output
Lower boom selected ON when function latched
P4-5 Low side 1A output
Upper boom selected ON when function latched
P4-6 Low side 1A output Tele boom selected ON when function latched
P4-7 Low side 1A output
Slew boom selected ON when function latched
P4-8 Low side 1A output
Drive boom selected ON when function latched
P4-9 N/C
momentary SW's, latching function, & turning ON selected
functions lamps
Ensure that the work platform is resting on firm, level surface.