The machine has this code on it and I have already replaced the high voltage circuit board, the positioning belt sensor with the clutch, and the transfer belt assembly complete to solve the issue of the SC401. The only thing I have left to change is the BICU circuit board. If this doesn't solve the problem does anyone have any thoughts as to what could fix this problem? Any hep appreciated, thank you.
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Try to resold the power supply.There must be some doubtful solderings -
firmwareBachelor of Science in Information Technology, Comptia A+, Comptia Network+Comment
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There is an RTB (10) for this issue, text copied below:
We would like to inform the history of the ROM modifications for the BCU Board (P/N: A1335104) for your reference. Suffix E of ROM was used from the January 1997 to the May 1997 production. The problem arose after the modification from Suffix F to G for the ROM, but this was not installed in any machines.
Suffix H is used from the June 1997 production run.
Problem:
If the number of copies in one job is large, the copy becomes lighter and SC401
occurs.
Countermeasure:
When the feedback voltage for the transfer belt power pack exceeds the standard voltage, the power pack monitor counter records the occurrence. When the number of occurrences reaches 8, SC401 occurs. The counter resets at the end of each job but it may reach 8 during longer copy runs. Due to this modification, the counter will now reset after each copy.
Looks like it's going to be a new BICU board. Get the customer another machine sold too, what an old shed it must be!It's 106 miles to Chicago. We've got a full tank of gas, half a pack of cigarettes, it's dark and we're wearing sunglasses.
Hit it.Comment
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Per Goose's:
transfer belt lift clutch
BCU ROM with level (H) or higher (A133 5104)
drum
transfer belt position sensor
The lift clutch is my personal favorite from this list. =^..^=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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Sounds like a short of the high voltage bias. I think there is a metal roller (in the transfer unit) which should be coated with a non-conductive material, sometimes black in color. Check to see if this roller has any of the non-conductive materials worn which would expose the bare metal and thus cause a short of the bias.Comment
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As I recall, pinholes in the xfer belt can cause this too.sigpic
You never realize how cheap a professional is until after you let an amateur do it.
A+; Network +; PDI+Comment
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