Replacing Fuse - Mitsubishi Electric M80 Series Maintenance Manual

M800/M80/E80 Series Maintenance Manual
2 Daily Maintenance and Periodic Maintenance

2.2.4 Replacing Fuse

How to check for fuse blowout
Operation panel I/O unit
When FUSE LED is not lit and DOCOMLED is lit (*1), the fuse is blown out.
FCU8-DX750/760/761
FUSE : Not lit
DOCOM : Lit
FUSE : Not lit
DOCOM : Lit
(*1) When DOCOM LED is not lit, it is considered that the power is not supplied.
Confirm that the power is correctly supplied.
IB-1501273-F
FCU8-DX731
FCU8-DX730/830/837
FUSE : Not lit
DOCOM : Lit
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