Location Of Fuses In The Digital Output Module 120/230 Vac - Siemens CPU 313C Hardware And Installation Manual

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Digital output modules are equipped with 1 fuse per channel group. The fuses are
located at the left side of the digital output module. The figure below shows you the
location of the fuses on digital output modules. 
Figure 10-5 Location of fuses in the digital output module 120/230 VAC
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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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S7-300 Automation System, Hardware and Installation: CPU 31xC and CPU 31x
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