Troubleshooting For Image Quality Control; Check The Control Status Of The Image Quality Control(05-291); Corrective Action For Pattern Error; Is The Developer Unit Inserted Completely And Locked? - Toshiba e-STUDIO650 Service Handbook

5. 1. 16. Troubleshooting for image quality control

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

Check the control status of the image quality control(05-291).

<When "2" is displayed: pattern error>
The pattern is not read or formed correctly.
<When "4" is displayed: sensor error>
The sensor output is out of the acceptable range.

(1) Corrective action for pattern error

Output the test print (04-113 : 33-gradation pattern in subscanning direction ).
Is there any abnomality (blank print, uneven image density, etc.) in the image?
YES
NO

Is the developer unit inserted completely and locked?

YES
NO
Is the main charger tainted or attached poorly?
NO
YES
1. Replace the developer unit and perform the "enforced performing of image quality control"/
"control status check" (described later).
2. Replace the cleaner unit and perform the "enforced performing of image quality control"/
"control status check" (described later).
3. Replace the transfer belt unit and perform the "enforced performing of image quality control"/
"control status check" (described later).
e-STUDIO550/650/810 TROUBLE SHOOTING
Replace the image quality sensor and perform the "enforced performing of
image quality control"/"control status check" (described later).
After completely inserting and locking the developer unit, perform the "enforced
performing of image quality control"/"control status check" (described later).
After cleaning the main charger or correcting the defect, perform the "enforced
performing of image quality control"/"control status check" (described later).
5 - 102 JUNE 2002 © TOSHIBA TEC