Chamberlain LiftMaster K001A6039 Installation Instructions Manual

APPLICATION REQUIREMENTS:
This modification is available to all LA400 North American gate
operators.
FUNCTION:
Allows existing LA400 control board in the field to be replaced or
upgraded with a new LA400 control board.
WARNING
To prevent possible SERIOUS INJURY or DEATH from
electrocution or fire, disconnect power at the fuse box BEFORE
WARNING
proceeding.
REMOVE EXISTING BOARD
1. Remove screws in each corner and open control box cover
(Figure 1).
2. Disconnect terminals leads to both batteries and the 24VAC or
solar input at the board.
3. Remove the coaxial cable going to the antenna at the board F
connector (Figure 2).
4. Remove all quick connect terminals in use to the logic board
(Figure 2).
• Wiring terminals
• Motor connectors
• Alarms
• Reset terminals
NOTE: Remember location of all wire connections for
reinstallation.
5. Disconnect the earth ground wire from the board
connector (J4).
6. Remove the screws (4) that fasten the control board to the
mounting bracket and remove the existing control board.
I N S T A L L A T I O N I N S T R U C T I O N S
Replacement Kit
K001A6039
Figure 1
Cover
Logic Board
1
Control Board
Screws
Batteries
Mounting
Bracket