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DMM4020 Input Fuse Replacement

Model: DMM4020 | Subject: Products | Published: October 2026 | FAQ ID: KB-01057

Question: I have several DMM4020 with blown current fuses. The manual indicates that when looking at the front of the meter, F2 is outboard and F1 is inboard. However, on the first meter I've opened the PCB markers are reversed; XBF2 is where the manual says F1 ought to go, XBF1 is where F2 ought to go.

Answer: I've been able to confirm with our design team that the manual is correct and the board markings are incorrect.