Fuse value on S1 finisher board

[Klydon]

Any one have any idea what the fuse ratings are for the fuses on a S1 finisher control board that goes on the 2270/3025 series IR's? In particular, I am interested in fuse 3.

Thanks

[andym]

will have a look for you tomorrow.

[andym]

it's a thru-hole fuse. FU3 on board says 2.5A.

Hope this helps.

[CanonHPTech]

I hope you are only planning on replacing fuse on board, after problem is solved? From experience, these fuses blow usually because of the tray cable in the rear that runs all the way under the tray. The cable can become pinched/damaged but is not visable even to trained eye. Some times it can be because it was run incorrectly, as in installing second finisher tray. I've even had one where I swapped out board and machine ran for almost a year, but blew the fuse again. Had a new install where it had the second tray and blew the fuse after about three days of use. The symptom is the same. Bad signal makes tray motor drive up continously and bends the L shaped limit bracket and then blows fuse to protect motor. There is an updated part number out for cable. Just plan on a little bit of time replacing since it is same cable that plugs into all motors and sensors for the tray. Has to be run in a maze under finisher tray. Good luck.

[alex@wocltd.com]

does anyone know where to source these fuses? at present i take them off dead boards.....

[andym]

True. Especially with that second tray. The loom so has to go under the plastic nacelle. I've also seen issues with the limit sensors.

I hope you are only planning on replacing fuse on board, after problem is solved? From experience, these fuses blow usually because of the tray cable in the rear that runs all the way under the tray. The cable can become pinched/damaged but is not visable even to trained eye. Some times it can be because it was run incorrectly, as in installing second finisher tray. I've even had one where I swapped out board and machine ran for almost a year, but blew the fuse again. Had a new install where it had the second tray and blew the fuse after about three days of use. The symptom is the same. Bad signal makes tray motor drive up continously and bends the L shaped limit bracket and then blows fuse to protect motor. There is an updated part number out for cable. Just plan on a little bit of time replacing since it is same cable that plugs into all motors and sensors for the tray. Has to be run in a maze under finisher tray. Good luck.

[andym]

Most electrical component suppliers should be able to provide. As I don't know where in the world you are, I can't help with any suggestions.

I take it that you have a great deal of experience with circuit board alterations?

does anyone know where to source these fuses? at present i take them off dead boards.....

[alex@wocltd.com]

i'm just down the road from you reside in watford based out of slough - but i cant find (to be honest only really looked at maplins) anyone who supplys those parts...

started work for pentax ALWAYS doing Component repair down to board level

[andym]

In that case have you looked in the RS catologue? CPC and Rapid also come to mind. They were the main suppliers that the company worked for, used. Generally I look up in the RS then buy from Rapid.

[Klydon]

Thanks. Looks like a pico type fuse, but I did not know the value.

I plan on only changing the fuse as I have had several blow out with the mentioned bent bracket. Put in a new board and it works fine. I have yet to go back to a machine that blew that fuse to later replace the cable, although I have had to replace cables before as well, so I am familiar with both issues. On top of that, I have very few machines with double trays. (Top tray cable goes out quite a bit on double tray installations from what I have heard). I just don't see the point of ordering boards when it is easy to verify what is wrong with the board and I can change the fuse out in a few minutes.

There is an electronics store that probably has what I need locally. I used to work on another type of machine that would blow a fuse like that all the time back in the day and the techs just carried a tube of those around. Probably fix the issue 90% of the time and was a benefit to the customer in terms of no downtime and saved the company some money.