Toshiba e-STUDIO 5540C Service Manual page 553

Notes:
When performing "Automatic gamma adjustment" in addition, "Forced performing of image
quality closed-loop control (05-2742)" should be done.
An adjustment error may occur when you perform "Forced performing of image quality closed-
loop control (05-2742)". See "[4] Forced performing of image quality closed-loop control (05-
2742) / check the controlling status" in  P. 8-281"8.4.1 Drum surface potential sensor control
related troubleshooting" to clear the error.
Code Item to be adjusted
2742 Forced performing
of image quality
closed-loop control
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<Procedure>
(A) While pressing [0] and [5] simultaneously, turn the power ON.
Adjustment Mode
(B) Key in [2742] and press the [START] button.
(C) "WAIT" is displayed.
(D) When the adjustment finishes normally, the equipment will return to initial
state of the Adjustment Mode.
When an error occurs
<When "Waste toner box replacement" is displayed>
1. Replace the waste toner box with a new one and close the waste toner
box cover.
2. Press and hold the [ON/OFF] button for a few seconds to shut down the
equipment.
3. Turn the power ON.
4. Release the waste toner box full status by the warming-up operation.
5. Check that "Ready" is displayed.
6. Press and hold the [ON/OFF] button for a few seconds to shut down the
equipment.
7. Perform steps (A) to (D) in <Procedure>.
<When "ERROR" is displayed>>
(1)"ERROR" which occurs when toner is supplied
- e-STUDIO5540C/6540C6550C:
 P. 3-54"[C] No toner in the cartridge"
1. Press the [CANCEL] button to return to the original state in the
adjustment mode in order to check the toner low status.
2. Press and hold the [ON/OFF] button for a few seconds to shut down the
equipment.
3. Turn the power ON.
4. Check that the toner is being added properly in the warming-up status.
When a message prompts you to replace the toner cartridge, open the
front cover and replace the cartridge with a new one so that toner-empty
status will be released.
5. Check that "Ready" is displayed.
6. Press and hold the [ON/OFF] button for a few seconds to shut down the
equipment.
7. Perform steps (A) to (D) in <Procedure>.
- e-STUDIO5560C/6560C6570C:
 P. 3-54"[C] No toner in the cartridge"
1. Press the [CANCEL] button to return to the original state in the
adjustment mode in order to check the toner low status.
2. Replace the empty toner cartridge with a new one and close the front
cover.
3. Key in [4833] and press the [START] button.
4. "WAIT" is displayed.
5. When the adjustment finishes normally, the equipment will return to initial
state of the Adjustment Mode.
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Contents
e-STUDIO5540C/6540C/6550C/5560C/6560C/6570C
SETTING ADJUSTMENT
6