Toshiba e-STUDIO 2555C Service Manual page 67

[ 3 ] Drawer feed copying (1st drawer paper feeding)
1. Press the [START] button ON
→ "READY" changes to "COPYING"
→ Exposure lamp (EXP) turned ON
→ Scan motor (M1) turned ON→ Carriages-1 and -2 move forward
→ Drum/TBU motor (M6), Paper feeding/developer unit drive motor (M2), and fuser motor (M4)
turned ON
- Drum, transfer belt, fuser unit, and developer unit are driven
2. Drawer paper feeding
→ Fans rotated at high speed and feed clutch (CLT2) turned ON
- Feed roller start to rotate
→ Paper reaches the feed sensor (S20)
- Feed sensor (S20) is turned ON
→ Paper reaches the registration roller
- Registration sensor (S19) is turned ON and aligning is performed
→ Feed clutch (CLT2) is turned OFF after a certain period of time
3. A certain period of time passed after the carriage operation
→ Registration motor (M14) is turned ON → Paper is transported to the
transfer area
→ Copy counter operates
4. Completion of scanning
→ Exposure lamp (EXP) turned OFF
→ Scan motor (M1) turned OFF
→ Registration motor (M14) is turned OFF (after the trailing edge of the paper passed the
registration roller)
→ "READY (PRINTING)" is displayed
5. Printing operation
1) Color printing operation
→ Mono/color switching motor (M3) turned ON
- The drum switching detection sensor (S11) checks whether the equipment is in the color or black
printing status, and if it is in the black printing status, the motor (M3) is turned ON to switch the
status to color printing.
→ Drum/TBU motor (M6), discharge LED-Y, -M, -C, -K (ERS) turned ON
→ Main charger bias turned ON
→ 1st transfer contact/release clutch (CLT2) turned ON
- Contact the 1st transfer rollers (Y, M and C) to the transfer belt
→ YMCK developer bias (DC) and Paper feeding/developer unit drive motor (M2) turned ON
→ 2nd transfer bias turned ON
→ LED emission (yellow image)
→ 1st transfer bias (Y) turned ON
- 1st transfer of yellow image (Yellow image is transferred to the transfer belt)
→ 1st transfer bias (Y) turned OFF
→ LED emission (magenta image)
→ 1st transfer bias (M) turned ON
- 1st transfer of magenta image (Magenta image is transferred to the transfer belt)
→ 1st transfer bias (M) turned OFF
→ LED emission (cyan image)
→ 1st transfer bias (C) turned ON
- 1st transfer of cyan image (Cyan image is transferred to the transfer belt)
→ 1st transfer bias (C) turned OFF
→ LED emission (black image)
→ 1st transfer bias (K) turned ON
- 1st transfer of black image (Black image is transferred to the transfer belt)
→ 1st transfer bias (K) turned OFF
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OUTLINE OF THE MACHINE
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