Toshiba e-STUDIO2820C Service Handbook page 355

< Checking the abnormal status on color registration >
(5) Turn the power ON while [0] and [5] are pressed simultaneously.
(6) Key in "4720", then press the [START] button. (05-4720: Displaying the cause of color registra-
tion detection error)
(7) Check the displayed value.
When the error [CA00] occurs, the value between 1 and 255 is displayed. (0: Normal comple-
tion)
(The statues of total 8 sections (4 colors on the front and rear sides) are displayed.)
1 : Y on the rear side detection abnormality (*1)
2 : Y on the front side detection abnormality (*1)
3 : Y on the front and rear sides detection abnormality
4 : M on the rear side detection abnormality (*1)
8 : M on the front side detection abnormality (*1)
12 : M on the front and rear sides detection abnormality
16 : C on the rear side detection abnormality (*1)
32 : C on the front side detection abnormality (*1)
48 : C on the front and rear sides detection abnormality
64 : K on the rear side detection abnormality (*1)
85 : All colors on the rear side detection abnormality
128: K on the front side detection abnormality (*1)
170: All colors on the front side detection abnormality
192: K on the front and rear sides detection abnormality
255: All colors on the front and rear sides detection abnormality -> Go to (8)
Other than the above: Multiple colors detection abnormality
(*2) The adjustment value is the sum of (*1), which, as in the example below, specifies the
cause of the detection abnormality.
(E.g. 1) 05-4720 --- in case of 72
72 = 64 + 8
-> K on the rear side / M on the front side detection abnormality
(E.g. 2) 05-4720 --- in case of 146
146 = 128 + 18 = 128 + 16 + 2
-> K on the front side / C on the rear side / Y on the front side detection abnormality
< Checking the status of the image position aligning sensor >
Check if the light emitting area of the image position aligning sensor emits LEDs and if the reflected
lights on the transfer belt surface are detected by the light receiving area of the image position aligning
sensor.
(8) Turn the power ON while [0] and [3] are pressed simultaneously.
(9) Press the [START] button.
(10) Check how items [G] and [H] are displayed while [7] is pressed.
(11) Press the [CLEAR] button.
(12) Key in "125", then press the [START] button. (03-125: Sensor shutter is opened)
(13) Key in "126", then press the [START] button. (03-126: Image position aligning sensor / LED ON)
(14) Press the [START] button.
(15) Check how items [G] and [H] are displayed while [7] is pressed.
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-> Go to (8)
-> Go to (23)
-> Go to (8)
-> Go to (23)
-> (*2), Go to (23)
e-STUDIO2820C/2830C/3520C/3530C/4520C
ERROR CODE AND TROUBLESHOOTING
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