Bullwinkle
Member
Picked up a Firepower, but have a general fuse question
I just picked up a Firepower that is in very nice shape, only problem.. no displays, so now begins the troubleshooting. I have the links for system 3-7 repair so I'm following that. Ran into my first roadblock and I want to make sure of what I'm doing prior to moving on.
Figured I'd check the fuses on the power supply board first. The guide says the fuses should be one thing and what's installed is another. Here's what I have:
Fuse: guide / actual installed
F1: 90v AC - 1/4a slo-blo / 250v AGC 1a
F2: 28v DC - 2.5a slo-blo / 250v 3a slo-blo
F3: 18v DC - 8a fast blo / 250v AGC 3a
F4: 28v DC - 10a slo-blo / SFE 20
F5: 5v DC - 4a fast-blo / SFE 20
It looks like the previous owner just put what he had where he wanted it...or he knows more about fuses than I do and these cross reference to the original specs (which I'm doubting).
Now..I have fuses that match the guide, but I just wanted to know if a 3a fuse is a 3a fuse regardless of voltage (ie: AC vs DC) I'm getting confused looking at my fuse packages that state AC voltage on them.
Thanks ...any guidance is appreciated.
-tom
I just picked up a Firepower that is in very nice shape, only problem.. no displays, so now begins the troubleshooting. I have the links for system 3-7 repair so I'm following that. Ran into my first roadblock and I want to make sure of what I'm doing prior to moving on.
Figured I'd check the fuses on the power supply board first. The guide says the fuses should be one thing and what's installed is another. Here's what I have:
Fuse: guide / actual installed
F1: 90v AC - 1/4a slo-blo / 250v AGC 1a
F2: 28v DC - 2.5a slo-blo / 250v 3a slo-blo
F3: 18v DC - 8a fast blo / 250v AGC 3a
F4: 28v DC - 10a slo-blo / SFE 20
F5: 5v DC - 4a fast-blo / SFE 20
It looks like the previous owner just put what he had where he wanted it...or he knows more about fuses than I do and these cross reference to the original specs (which I'm doubting).
Now..I have fuses that match the guide, but I just wanted to know if a 3a fuse is a 3a fuse regardless of voltage (ie: AC vs DC) I'm getting confused looking at my fuse packages that state AC voltage on them.
Thanks ...any guidance is appreciated.
-tom



