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Re: 5055C Call for Service C970
There was a bulletin about the charge corona causing the C970. The plastic around the front of the cover of the charge
corona, would not allow the frame to make proper ground connection. They changed the plastic just a bit to fix the
problem. In the field, when we didn't have the part, we just shaved off the excess area and it solved the problem. -
Re: 5055C Call for Service C970
I think he is referring to these:
terminal retrofit.jpg
There is also a change in the ends, the originals were gray, the new style ones are black.
Failing to plan is planning to fail!!!Comment
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Re: 5055C Call for Service C970
Also common on these the Weisshorn High and Low, the seesaw (the plastic rocker that tensions both the needle electrode and grid) breaks, dropping the needle electrode onto the grid. I've replaced quite a number of these, and repaired almost as many.
The C970 is not specific to a color, so any of the four primary charge units can cause this, and it can be very intermittent. Usually, I examine all four primary charge units from gross defects, like the broken seesaw or the needle electrode twisted 90 degrees down it's length (you'd think that would be pretty obvious, but I've found it a couple times). If you can catch it in the act, the affected color drum with be blanketed with toner:
Weisshorn Seesaw.jpgCyan C970.jpg
If there are no gross defects, I'll examine the test charts and focus on the color primary charge unit that is most poorly calibrated. It's you're best odds of getting the correct one. =^..^=Last edited by blackcat4866; 02-06-2021, 12:49 AM.If you'd like a serious answer to your request:
1) demonstrate that you've read the manual
2) demonstrate that you made some attempt to fix it.
3) if you're going to ask about jams include the jam code.
4) if you're going to ask about an error code include the error code.
5) You are the person onsite. Only you can make observations.
blackcat: Master Of The Obvious =^..^=Comment
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Re: 5055C Call for Service C970
[QUOTE=blackcat4866;1681505]Also common on these the Weisshorn High and Low, the seesaw (the plastic rocker that tensions both the needle electrode and grid) breaks, dropping the needle electrode onto the grid. I've replaced quite a number of these, and repaired almost as many.
I got so tired of replacing those, that I just gave up, drilled a tiny hole, and looped the spring through it instead of replacing them LOL.Comment
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If you'd like a serious answer to your request:
1) demonstrate that you've read the manual
2) demonstrate that you made some attempt to fix it.
3) if you're going to ask about jams include the jam code.
4) if you're going to ask about an error code include the error code.
5) You are the person onsite. Only you can make observations.
blackcat: Master Of The Obvious =^..^=Comment
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Re: 5055C Call for Service C970
SPC: small paper clip + a dot of two-part epoxy
Then smooth out the ends with the Dremel. =^..^=If you'd like a serious answer to your request:
1) demonstrate that you've read the manual
2) demonstrate that you made some attempt to fix it.
3) if you're going to ask about jams include the jam code.
4) if you're going to ask about an error code include the error code.
5) You are the person onsite. Only you can make observations.
blackcat: Master Of The Obvious =^..^=Comment
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Re: 5055C Call for Service C970
I just repaired one by drilling a small hole, then putting a tiny screw in there. Held the charge sawtooth just fine, but machine still has the code.
I imagine I could possibly have other sawtooths bad on other drums, or other issues with the machine. I didn't see anywhere where there was a simulation to CLEAR the 970 code?
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