Minolta EP3010 Manual page 240

<Controlled Part Check Procedure by Changing Input Port Data>
Example
When a paper misfeed occurs in the paper take-up section of the copier, 1st Drawer Paper
Take-Up Sensor PC55 is considered to be responsible for it.
Procedure
1. Remove the sheet of paper misfed.
2. From the I/O port check list, it is found that the H/L input signal to PC55 is supplied from
PWB-A (IC3A) APB3.
3. Select "IC Port Check" from the I/O Check function in the Tech. Rep. mode and access
the screen which includes the input ports of PWB-A (IC3A) APB3.
4. Check that the input port data of PWB-A (IC3A) APB3 on the screen is "H" (sensor
being unblocked).
5. Move the PC55 actuator to block the sensor.
6. Return to the "I/O Check" basic screen, select "IC Port Check" again, choose the screen
which includes the APB3 input port data, and make sure that the data has changed
from "H" to "L".
L: PC55 is operational. H: PC55 is faulty.
T-3