Toshiba e-studio 650

[makaule]

Service recomended for SPC. Changed almost all parts (drum, developer and etc..) 20K ago. What can be wrong ?

[atudorica]

be sure you reset drum counter in pm mode
main charge & grid are a factor
some times is the sensor and it is expensive

[ivovb]

Service recomended for SPC. Changed almost all parts (drum, developer and etc..) 20K ago. What can be wrong ?

[Corrective action when “ Service Recommended for SPC” is blinked]
Check the control status of the surface potential sensor (05-242).
<When “4” is displayed: sensor error>
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?
Reconnect the connector and perform the “surface potential sensor control check”
(described later).
Is the main charger grid/wire attached poorly?
Is the main charger attached poorly?
Are leaks and such occurring?
After removing, if any, dust and correcting the defect, perform the “surface
potential sensor control check” (described later).
Is the main charger grid bias output when the main charger grid bias output adjustment (05-
210) is performed?
Or, is the bias value is changed when the adjustment value is changed?
1. Replace the high-voltage transformer and perform the “surface potential
sensor control check” (described later).
2. Replace the LCG board and perform the “surface potential sensor control
check” (described later).
Does the output value of the main charger grid bias consist with the setting value (within the
acceptable range)?
Readjust the main charger grid bias output adjustment (05-210) and perform the
“surface potential sensor control check” (described later).
Replace the surface potential sensor and perform the “surface potential sensor control check”
(described later).
Replace the LGC board and perform the “surface potential sensor control check” (described later).

<<Procedure of the “surface potential sensor control check”>>
Set the value for the number of detected abnormalities of the drum surface potential control (08-
420) to “0”.
Set the value for the drum surface potential setting (08-421) to “0” (valid).
Set the value for the auto-start print volume setting 1 of the image quality control (08-803) to “0” (valid).
Perform a test printing.
Check the control status of the surface potential sensor (05-242) and number of detected
abnormalities of the surface potential sensor (08-420).
If the value for 05-242 is except “4” and the value for 08-420 is “0”, the status is normal.
Return the value for the auto-start print volume setting 1 of the image quality control (08-803) to “2”.
The check is completed.

BR