Minolta EP3010 Manual page 241

<Controlled Part Check Procedure by Changing Output Port Data>
Example
When a manual paper misfeed occurs, Manual Feed Paper Take-Up Clutch CL51 is consid-
ered to be responsible for it.
Procedure
1. Remove the sheet of paper misfed and reset the misfeed.
2. From the I/O port check list, it is found that the ON/OFF output signal of CL51 is sup-
plied from PWB-A (IC5A) BPA1.
3. Select "IC Port Check" from the I/O Check function in the Tech. Rep. mode and access
the screen which includes the output ports of PWB-A (IC5A) BPA1.
4. Check that the output port data of PWB-A (IC5A) BPA1 on the screen is "1" (CL51 is
deenergized).
5. Touch the "CHANGE" key on the screen to change the data from "1" to "0", causing
CL51 to be energized for approx. 5 seconds. This allows you to determine whether the
Clutch is "operational or faulty" by checking for the Clutch sound.
Operational: Sound produced.
6. If CL51 was not energized, make the "Controller Board Check" in the same mode (for
some electrical parts only).
7. If the "ON" signal of CL51 is not output from PWB-A, the corresponding malfunction
code is displayed.
For CL51, "C033B" is displayed.
Faulty: No sound produced.
T-4