Mitsubishi A1SJH(S8) User Manual page 120

8. LOADING AND INSTALLATION
(2) Removal
I/O module
Hole for removal
Dust-proof cover
To remove the dustproof cover from the I/O module, insert the tip of a flat-tip
screwdriver into the removal hole as shown in the figure, then move the screwdriver
towards the rear of the module to separate the clip from the removal hole and remove
the cover.
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