Corrective Action For Sensor Error; If The Output Value Is Above 819; If The Output Value Is Less Than (Value For 08-814)X4; Is The Window Of The Image Quality Sensor Tainted? - Toshiba e-STUDIO650 Service Handbook

(2) Corrective action for sensor error

Check the output value (sensor light source OFF) of the image quality sensor (05-292).
Is the output value within the range 102~307?
NO 1. Reconnect the connector of the image quality sensor and perform the
2. Replace the image quality sensor and perform the "enforced performing of
3. Replace the LGC board and perform the "enforced performing of image
YES
Check the output value (drum surface) of the image quality sensor (05-293).
Is the output value within the range (value for 08-814)x4~819?
- If the output value is within the range (value for 08-814)x4~819 -
Perform the "enforced performing of image quality control"/"control status check" (described later).

- If the output value is above 819 -

Replace the image quality sensor and perform the "enforced performing of image quality control"/
"control status check" (described later).
Replace the LGC board and perform the "enforced performing of image quality control"/"control
status check" (stated later).

- If the output value is less than (value for 08-814)x4 -

Is the value of the light amount adjustment result (5-296) of the image quality sensor 255?
1. Replace the image quality sensor and perform the "enforced performing of
NO
2. Replace the LGC board and perform the "enforced performing of image
YES

Is the window of the image quality sensor tainted?

YES
Clean the window and perform the "enforced performing of image quality control"
/"control status check" (described later).
NO
Is the center of the drum scarred or tainted?
YES
Replace the drum and perform the "enforced performing of image quality control"
/"control status check" (described later).
NO
1. Replace the image quality sensor and perform the "enforced performing of image quality
control"/"control status check" (described later).
2. Replace the LGC board and perform the "enforced performing of image quality control"/
"control status check" (described later).
JUNE 2002 © TOSHIBA TEC
"enforced performing of image quality control"/"control status check"
(described later).
image quality control"/"control status check" (described later).
quality control"/"control status check" (described later).
image quality control"/"control status check" (described later).
quality control"/"control status check" (described later).
5 - 103 e-STUDIO550/650/810 TROUBLE SHOOTING