Toshiba e-STUDIO556 Service Manual page 233

Hide thumbs Also See for e-STUDIO556:

Troubleshooting for surface potential control

[Corrective action when "Service Recommended for SPC" is blinked]

Check the control status of the surface potential sensor (05-2160).

The sensor detection value is abnormal or the sensor output value is not changed even

though the main charger bias value is changed.

Is the connector of the surface potential sensor connected properly?

Is the main charger attached poorly?

Are leaks and such occurring?

YES  After removing, if any, dust and correcting the defect, perform the

Is the connector of LGC board CN337, CN342 or that of SYS board CN134, CN130 and

CN104 disconnected?

YES  Connect them properly again, and perform drum surface potential

Is the main charger wrongly installed?

Are the main charger grid/wire wrongly installed?

Is the charger leakage, etc. occurring?

YES  Remove the dusts or toner stains if any, and then install them properly.

Check the value for 05-2162. Is the value for 05-2162 within the range between 400 and

e-STUDIO556/656/756/856/557/657/757/857

ERROR CODE AND TROUBLESHOOTING

"surface potential sensor control check" (described later).

sensor control / condition check (described later).

Perform the drum surface potential sensor control / condition check

(described later)

Show Quick Links