Toshiba E-Studio 5540c - Page 19

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CONTENTS
3
4.2 Control Panel .................................................................................................................... 4-9
4.2.1 Control panel unit .............................................................................................. 4-9
4.2.2 Control panel rear cover ................................................................................. 4-10
4.2.3 Display PC board (DSP) .................................................................................. 4-10
4.2.4 Shielding plate ................................................................................................. 4-11
4.2.5 Key PC board-1 (KEY1) .................................................................................. 4-13
4.2.6 Key PC board-2 (KEY2) .................................................................................. 4-13
4.2.7 Touch panel (TCP) .......................................................................................... 4-13
4.2.8 Control panel cover.......................................................................................... 4-14
4.3 Scanner........................................................................................................................... 4-15
4.3.1 Original glass ................................................................................................... 4-15
4.3.2 Lens cover ....................................................................................................... 4-16
4.3.3 SLG board cooling fan (F1) ............................................................................. 4-16
4.3.4 Automatic original detection sensor <APS sensor> (S1-5).............................. 4-17
4.3.5 Exposure lamp (EXP) ...................................................................................... 4-18
4.3.6 Exposure lamp cooling fan-1 (F2).................................................................... 4-20
4.3.7 Scanner unit cooling fan-1 (F3) ....................................................................... 4-21
4.3.8 Exposure lamp cooling fan-2 (F26).................................................................. 4-22
4.3.9 Upper exhaust fan (left) (F29).......................................................................... 4-23
4.3.10 Upper exhaust fan (right) (F30) ....................................................................... 4-25
4.3.11 Lens unit .......................................................................................................... 4-26
4.3.12 Scan motor (M1) .............................................................................................. 4-27
4.3.13 Carriage-1........................................................................................................ 4-28
4.3.14 Inverter board (INV) ......................................................................................... 4-30
4.3.15 Carriage wire / carriage-2 ................................................................................ 4-30
4.3.16 Carriage home position sensor (S6) ................................................................ 4-34
4.3.17 Platen sensor (S7) ........................................................................................... 4-34
4.3.18 SLG board (SLG)............................................................................................. 4-34
4.4 Laser Optical Unit............................................................................................................ 4-35
4.4.1 Laser optical unit.............................................................................................. 4-35
4.4.2 Laser optical unit cooling fan (front) (F22) ....................................................... 4-38
4.4.3 Laser optical unit cooling fan (rear) (F23)........................................................ 4-40
4.4.4 Shutter ............................................................................................................. 4-41
4.4.5 Shutter motor ................................................................................................... 4-41
4.4.6 Shutter sensor (home position)........................................................................ 4-42
4.4.7 Shutter sensor (end position)........................................................................... 4-43
4.4.8 Disassembly and replacement of the Polygonal motor ................................... 4-43
4.5 Paper Feeding System.................................................................................................... 4-45
4.5.1 Bypass feed tray .............................................................................................. 4-45
4.5.2 Bypass feed unit .............................................................................................. 4-45
4.5.3 Bypass pickup solenoid (SOL8)....................................................................... 4-46
4.5.4 Bypass paper sensor (S71) ............................................................................. 4-46
4.5.5 Bypass pickup roller......................................................................................... 4-47
4.5.6 Bypass upper unit ............................................................................................ 4-48
4.5.7 Bypass feed roller ............................................................................................ 4-49
4.5.8 Bypass transport roller..................................................................................... 4-49
4.5.9 Bypass motor(M12) ......................................................................................... 4-50
4.5.10 1st drawer idling roller...................................................................................... 4-51
4.5.11 Bypass separation roller ................................................................................. 4-52
4.5.12 Bypass feed sensor (S72) ............................................................................... 4-54
4.5.13 Bypass paper size detection sensor (S70) ...................................................... 4-54
4.5.14 Drawer feeding unit.......................................................................................... 4-55
4.5.15 Feed roller........................................................................................................ 4-56
4.5.16 Pickup roller ..................................................................................................... 4-56
4.5.17 Separation roller .............................................................................................. 4-57
4.5.18 Transport roller ................................................................................................ 4-57
4.5.19 Drawer detection sensor (S73/S81/S89/S97).................................................. 4-59
4.5.20 Drawer feed sensor (S78/S86/S94/S102) ....................................................... 4-60