Service Manual Owner's manual

SECTION 3 - TROUBLESHOOTING
3120728 – JLG Lift – 3-3
Table 3-1. MC-1 WARNING CODES
(Indicated by 3 beeps, then slow flashing LED’s)
WARNING
CODE
LED’S
FLASHING
PROBABLE CAUSE REMEDY
010
Enter Code - Security Code has been activated and
must be entered before operation
Enter Code or deactivate using MC-1 configuration
software.
1 8 Charger Connected Unplug Charger
32
Brake Status Switch Open - Parking brake manually
released
Reset Parking Brake
32
Brake manual release lever obstructed (located at
drive motor brake)
Clear obstruction and reset lever
32
Defective parking brake status switch (located at
drive motor brake)
Replace Switch
32
Defective pin 11 at X105 (BRN wire) connection or
improper wiring
Properly attach wires or pin
3 2 Improper wiring at parking brake status switch Properly attach wires
32
Improper wiring from parking brake status switch to
ground
Properly attach wires
45
Configuration Lost - Drive Characteristic has
changed
Reprogram using MC-1 software
56
Current Measurement faulty - Drive characteristic
may have changed
Cycle on-off and reprogram if necessary
6 7 High Temperature in controller Reduce power
7 7 Motor Stalled Check drive wheels and motors
9 1 Battery Low ( < 18v) and power reduced Charge Batteries
12 9 Speed Control Potentiometer defective Replace Joystick
13 4
Drive Cutout Input Open - PHP bar must be down to
drive while elevated
Lower PHP
13 4
PHP bar is down, but drive is disabled - Defective wir-
ing at D-connector
Properly attach wire (RED/BLU) or pin 12 of X105
connector
13 4
PHP bar is down, but drive is disabled - Defective
ground wiring
Properly attach wires
14 3
PHP bar is down, but drive is disabled - Defective
switch
Replace switch
14 3 Tilt Switch open - Slope greater than 2 degrees Lower Platform and move to level ground
14 3
No Tilt Switch - open circuit at Pin 2 of X101 (WHT
wire)
Properly attach pin or wire connections
14 3 No Tilt Switch - open circuit to ground Check ground wire connections (BLK1 wire)
25 ---- Joystick E. Stop Counter Controller Log Only
26 ---- Configuration Access Counter Controller Log Only