Maintenance
S7-300 Programmable Controller Hardware and Installation
9-12 A5E00105492-01
fuses
Figure 9-6 Location of fuses in the digital output module 120/230 VAC
Replacing fuses
The fuses are located at the left side of the module. Replace the fuses as follows:
1. Switch the CPU to STOP.
2. Switch off the load voltage of the digital output module.
3. Remove the front connector from the digital output module.
4. Loosen the fixing screw of the digital output module.
5. Swing out the digital output module.
6. Remove the fuse holder from the digital output module.
7. Replace the fuse.
8. Screw the fuse holder back into the digital output module.
9. Reinstall the digital output module.
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