Toshiba e-STUDIO556 Service Manual page 13

4.1.10 Left upper cover................................................................................................. 4-4
4.1.11 Left lower cover (Exit cover) .............................................................................. 4-4
4.1.12 Left rear cover.................................................................................................... 4-5
4.1.13 Rear cover ......................................................................................................... 4-5
4.2 Control Panel .................................................................................................................... 4-6
4.2.1 Control panel unit............................................................................................... 4-6
4.2.2 DSP board (DSP) .............................................................................................. 4-8
4.2.3 KEY board (KEY)............................................................................................... 4-9
4.2.4 LCD panel (LCD) / Touch panel (TCP) .............................................................. 4-9
4.2.5 Control panel cover.......................................................................................... 4-10
4.3 Scanning Section ............................................................................................................ 4-11
4.3.1 Original glass ................................................................................................... 4-11
4.3.2 Lens cover ....................................................................................................... 4-11
4.3.3 SLG board cooling fan (M23)........................................................................... 4-12
4.3.4 Automatic original detection sensor (APS sensor) (S1 / S2 / S3 / S4 / S5) ..... 4-12
4.3.5 Carriage-1........................................................................................................ 4-13
4.3.6 Exposure lamp (EXP) ...................................................................................... 4-15
4.3.7 Lamp inverter board (INV-EXP) ....................................................................... 4-17
4.3.8 Exposure lamp cooling fan-1 (M36) ................................................................. 4-17
4.3.9 Exposure lamp cooling fan-2 (M37) ................................................................. 4-18
4.3.10 Lens unit .......................................................................................................... 4-20
4.3.11 Scanning section control PC board (SLG) ....................................................... 4-21
4.3.12 Carriage wire / Carriage-2 ............................................................................... 4-21
4.3.13 Carriage home position sensor (S6) ................................................................ 4-25
4.3.14 Scan motor (M1) .............................................................................................. 4-25
4.3.15 Scanner unit cooling fan (M38) ........................................................................ 4-26
4.3.16 Platen sensor (S53) ......................................................................................... 4-27
4.4 Laser Optical Unit............................................................................................................ 4-28
4.4.1 Laser unit cooling fan....................................................................................... 4-28
4.4.2 Laser optical unit.............................................................................................. 4-29
4.4.3 Laser control PC board (PLG board) ............................................................... 4-30
4.5 Paper Feeding System.................................................................................................... 4-31
4.5.1 Paper feeder unit / Bypass feed unit................................................................ 4-31
4.5.2 Intermediate transport unit............................................................................... 4-36
4.5.3 Bypass feed unit .............................................................................................. 4-39
4.5.4 Feed motor (M20) ............................................................................................ 4-44
4.5.5 Tray driving unit (upper/lower) / Tray-up motor (M21, M22) ............................ 4-44
4.5.6 Feed driving unit .............................................................................................. 4-45
4.5.7 Registration roller unit ...................................................................................... 4-46
4.5.8 Paper dust removal brush 2 (for the metallic registration roller) ...................... 4-48
4.5.9 Registration motor (M16) ................................................................................. 4-48
4.5.10 Tandem LCF.................................................................................................... 4-49
4.6 Process Related Section................................................................................................. 4-54
4.6.1 Main charger.................................................................................................... 4-54
4.6.2 Wire cleaner drive unit / Wire cleaner drive motor (M12) ................................ 4-56
4.6.3 Discharge LED (ERS)...................................................................................... 4-57
4.6.4 Drum surface potential sensor (S13) ............................................................... 4-58
4.6.5 Temperature/humidity sensor (S7) .................................................................. 4-59
4.6.6 Exhaust duct .................................................................................................... 4-59
4.6.7 Duct out fan (M27) / Exit section cooling fan (M29) ......................................... 4-59
4.6.8 Ozone filter ...................................................................................................... 4-60
4.7 Drum/Cleaner Unit .......................................................................................................... 4-61
4.7.1 Cleaner unit ..................................................................................................... 4-61
4.7.2 Drum thermistor (THM5) and Drum ................................................................. 4-61
4.7.3 Cleaning blade................................................................................................. 4-63
4.7.4 Recovery blade................................................................................................ 4-63
4.7.5 Cleaning brush................................................................................................. 4-64
4.7.6 Image quality sensor (S14) .............................................................................. 4-64
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e-STUDIO556/656/756/856(Ver03)
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