Jacobsen LF 3400 Manuel De Maintenance page 26

5 TROUBLESHOOTING
5.2 CONTROLLER LAMPS _____________________________________________________
The controller is a solid state device that monitors and
controls electrical functions. The controller receives input
signals from various switches and sensors throughout the
machine and transmits output signals to operate relays,
solenoids and warning lights. It controls and resets timers
and contains built in logic to control certain machine
functions.
Each input and output signal is displayed through lamps
located on top of the controller. A closed input switch
Lamp On - Circuit is active
Lamp Off - Circuit is inactive
INPUTS
Lamp
1 Program active (5 Gang Only)
2, 3
Program active - indicates controller has power
4
Key Switch "Start" Post
5
Neutral Start Switch - Traction Pedal in Neutral
6
Brake Switch - Brake On
7
Seat Switch - Operator Seated
8
Backlap Service Switch - Set to backlap
9 Cruise Control Switch - Off - Pin 1 (Option)
10 Cruise Control Switch - On - Pin 2 (Option)
11 Hydraulic Oil Level Float Switch
12
Hydraulic Oil Level Alarm Switch
13
Engine Oil Pressure Switch
16
Lift Limit Switch - Left Wing (7 Gang Only)
17
Lift Limit Switch - Left Front
18
Lift Limit Switch - Right Front
19
Lift Limit Switch - Right Wing (7 Gang Only)
20 Joystick - Left Wing (7 Gang Only)
21 Joystick - Right Wing (7 Gang Only)
22
Joystick - Lower
23
Joystick - Raise
24
Left Wing Mow Switch - Forward (7 Gang Only)
25
Center Mow Switch - Forward
26 Right Wing Mow Switch - Forward (7 Gang Only)
Left Wing Mow Switch - Reverse (7 Gang Only)
27
28
Center Mow Switch - Reverse
29 Right Wing Mow Switch - Reverse (7 Gang Only)
Inactive lamps 5 Gang- 14, 15, 16, 19, 20, 21, 24, 26, 27, 29, 30, 37, 39, 41, 42, 45, 46, 47, 48 (not used)
Inactive lamps 7 Gang - 1, 14, 15, 30, 41, 48 (not used)
GB-26
All manuals and user guides at all-guides.com
Controller Functions by Lamp Number
Circuit
indicates an active circuit and will turn an input lamp on, an
open switch an inactive circuit and will turn a lamp off.
Outputs are active when their lights are on.
It is important to note that in some cases a lamp or group of
lamps must be on or off for a condition to be true. For
example, to start the tractor the Mow Switch must be off
(lamps 25, 28, 38 off) while the Neutral Start Switch (lamp
5), Brake Switch (lamp 6) and Fuel Valve Hold coil (lamp 34)
must be on.
OUTPUTS
Lamp
31 Glow Plug Relay & Indicator - Glow Plug On
32 Light Test
33 Start Relay and Indicator
34 Fuel Valve Hold Coil
35 Warning Horn
36 Hydraulic Oil Level Light
37 Left Wing Mow Switch - Active Signal (7 Gang Only)
38 Center Mow Switch - Active signal
39 Right Wing Mow Switch - Active Signal (7 Gang Only)
40 Cruise Control Valve / Light (Option)
42 Lift Valve - Center Rear Mowers (7 Gang Only)
43 Lift Valve - Lower
44 Lift Valve - Raise
45 Lift Valve - Left Wing Mower (7 Gang Only)
46 Lift Valve - Front Mowers (7 Gang Only)
47 Lift Valve - Right Wing Mower (7 Gang Only)
Circuit