Toshiba e-Studio 3055CSE

1. When unpacking Prior to image dimensional adjustment, perform the “Forced performing of image quality closedloop control (05-2742)” procedure.
2. When any of the following parts is replaced, be sure to perform the “Forced performing of image quality closed-loop control (05-2742)” procedure.
   • Photoconductive drum
   • Developer material
   • Laser optical unit
   • Transfer belt
   • 1st transfer roller
   • Drum cleaning blade
   • Needle electrode
   • Main charger grid
   • Image position aligning sensor
   • Image quality sensor

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 closedloop control (05-2742)”. See “[4] Forced performing of image quality closed-loop control (05- 2742) / check the controlling status” Drum surface potential sensor control
related troubleshooting" to clear the error.

Code: 2742

Forced performing of image quality closed-loop control

Procedure

<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 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>
- e-STUDIO5540C/6540C6550C

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:

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.

“ERROR” which occurs in the surface potential sensor control

1. Specify the colors (Y,M,C,K) corresponding to 1 or 2 from the numbers displayed in “ERROR”.
2. Press the [CANCEL] button to return to the initial state of the Adjustment mode.
3. Press and hold the [ON/OFF] button for a few seconds to shut down the equipment.
4. Clear the error following the procedure on "8.4.1 Drum surface potential sensor control related troubleshooting" or "8.4.3 Drum surface potential sensor control related troubleshooting when setting up the equipment at unpacking (e-STUDIO6550C/6570C only)".
5. Perform steps (A) to (D) in <Procedure>.