Toshiba e-Studio 3055CSE

Cause/Section	Step	Check item	Measures
Adjustment	1	Perform the shading correction.	Perform FS-05-3218. If an error occurs, retry it. If the error still persists, clean the original glass
Density reproduction	2	Check the gradation reproduction.	Perform the forced performing of image quality closed-loop control (FS-05-2742) and then automatic gamma adjustment.
Printer section	3	Check the printer output image.	Output the test patterns and check them. Using FS-04-36 for each color. See step 7 if defects occur.
Scanner	4	Check if the original glass, mirrors or lens is dirty.	Clean it.
Parameter adjustment value	5	Check the image processing parameters.	Check the value of offsetting adjustment for background adjustment.
	6	Adjust the image processing parameters.	While checking the above encircled image, adjust the reproduction level by the offsetting adjustment for background adjustment.
Cover	7	Is the cover installed properly? (Is the drum exposed to the external light?)	Correct it.
Auto-toner	8	Is the auto-toner sensor normal?	Check the operation of autotoner sensor and readjust.
	9	Is the toner supply operating constantly?	Check the motor and circuits.
Main charger output	10	Is the main charger output normal?	Check the circuits.
Developer bias	11	Is the developer bias proper?	Check the circuits.
Developer unit	12	Is the contact between the drum and developer material proper?	Check the doctor-to-sleeve gap and pole position.
Developer material/ Toner/Drum	13	Using the specified developer material, toner and drum?	Use the specified developer material, toner and drum.
	14	Have the developer material and drum reached their PM life?	Replace the developer material and drum.
	15	Is the storage environment of the toner cartridge 35oC or less without dew?	Use the toner cartridge stored in the environment within specification.
Drum cleaning blade	16	Is the drum cleaned properly?	Check the drum cleaning blade pressure.
Transfer belt cleaning blade	17	Is the transfer belt cleaning blade in proper contact with the transfer belt?	Take off the transfer belt and check if the transfer belt cleaning blade pressure spring and pressure hook are installed properly.
Toner dusting	18	Is the toner accumulated on the seals of the developer unit?	Remove the toner and clean the seals.

* If the trouble is not solved at the step 1 and the step 2 or followings (excluding the parameter adjustment) are performed, make sure to perform “Enforced performing of image quality closed-loop control” and then “Automatic gamma adjustment” after taking a measure.