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7: HOW TO …
7.1: How to replace I/O card.
Switch off tester. Remove mains cord.
Back view of tester
I/O card
Remove these 2 screws
near edge.
If it cannot be removed then
remove this second plate first by
Remove this plate with I/O PCB
Remove PCB from
plate and replace
with new PCB and
Plate
PCB