Fujitronic Programmable Operation Display UG520H-x - Manual (Page 264)

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9. Remove the 2 screws fixing the inverter board.
10. Remove the inverter board and detach two connectors from the backlight unit.
Backlight units (CFL units)
Backlight units (CFL units) connector
11. Release the lock of the backlight unit (CFL unit). Remove the unit by pulling it up.
Lock
Lock
12. Attach a new backlight unit (CFL unit).
* Make sure that the lock is secured.
When taking a new backlight unit out of the bag, do not twist or yank on
the cable.
13. Attach the backlight unit (CFL unit) connector to the inverter board.
14. Attach the 2 screws to fix the inverter board.
Screw
Screw
Insulating seal
Connector
Power connection hole
ENB lamp hole
7 How to Replace the Backlight Unit