Liquid Crystal Display; Installing The Eprom; Troubleshooting - Mitsubishi MELSEC F FX-40DU-E Handy Manual

9. MAINTENANCE & TROUBLESHOOTING
Maintenance
9.1.2 Liquid crystal display
If screens cannot be displayed even if the screen contrast is adjusted using the contrast trimmer at
the rear of the FX-40DU-E, or the guideline life for the liquid crystal display has elapsed, Contact your
nearest Mitsubishi representative.
9.1.3
Installing the EPROM
When installing the EPROM, pay attention to the following points.
Installation operation
(1)
Switch the FX-40DU-E power OFF.
(2) Open the door of the panel marked USER at the rear of the FX-40DU-E.
(3)
Connect the EPROM, taking care that it is connected the right way round,
and that you do not bend the legs or touch them directly with your fingers.
(4) Close the panel door.
ROM mounting socket