Toshiba e-STUDIO 5540C Service Manual page 1152

[C] Adjust image quality
(1) Take off the front lower cover.
 P. 4-1"4.1.1 Front lower cover"
(2) Correctly write down the adjustment values of the following (05) codes attached on the laser
optical unit cooling duct.
(3) Start up with the Adjustment mode (05).
(4) Enter the password, and then press the [OK] button.
(If the password is not set for Service, press the [ENTER] button without entering anything.)
(5) Enter all the adjustment values written down in step (2).
(6) Reset the auto toner sensor.
1.Turn the power OFF.
2.Take off the developer units of 4 colors (Y, M, C and K).
 P. 4-110"4.6.24 Developer unit"
3.Discharge developer material in each developer unit and make sure that the developer unit is
completely empty. Or prepare empty developer units of 4 colors (Y, M, C and K).
 P. 4-112"4.6.25 Developer material"
4.Install the empty developer units of 4 colors (Y, M, C and K) to the equipment
 P. 4-110"4.6.24 Developer unit"
5.Install the developer cartridges of 4 colors (Y, M, C and K) to the equipment.
6.Install the front cover.
 P. 4-1"4.1.2 Front cover"
7.Perform automatic adjustment of auto-toner sensor.
Start up with the Adjustment mode (05), enter [2400] and press the [START] button.
8.Turn the power OFF.
9.Take off the front cover.
 P. 4-1"4.1.2 Front cover"
10. Take out all the developer cartridges and then install the sub-hoppers of 4 colors
(Y, M, C and K).
 P. 4-100"4.6.11 Sub-hopper"
11. Install the front cover.
 P. 4-1"4.1.2 Front cover"
Remarks:
You can reset the auto-toner sensor by directly entering the adjustment values for (05) 2405-0 to
3 with the Adjustment mode data list, which has been printed during normal operation of
equipment such as when it is setup, when preventive maintenance (PM) is performed or when
developer material is replaced, etc.
(7) Perform the "Forced performing of image quality closed-loop control" (05-2742)
(8) Perform "Mirror motor initial excitation setting" (05-4721).
(9) Perform the enforced position adjustment (05-4719).
(10) Perform printer related adjustment and scanner related adjustment.
 P. 6-16"6.1.7 Printer-related image dimensional adjustment"
 P. 6-23"6.1.8 Scanner-related image dimensional adjustment"
e-STUDIO5540C/6540C/6550C/5560C/6560C/6570C
REPLACEMENT OF PC BOARDS/HDD
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