Toshiba e-STUDIO555 Service Manual page 14

14.6 Reverse motor control circuit .......................................................................................... 14-8
14.7 Disassembly and Replacement....................................................................................... 14-9
15. REVERSING AUTOMATIC DOCUMENT FEEDER (RADF) ...................................... 15-1
15.1 General Description ........................................................................................................ 15-1
15.2 Functions......................................................................................................................... 15-2
15.3 Description of Operation ................................................................................................. 15-3
15.3.1 Paper path ....................................................................................................... 15-3
15.3.2 Drive ................................................................................................................ 15-4
15.3.3 Original size detection ..................................................................................... 15-5
15.4 Electric Circuit Description .............................................................................................. 15-8
15.4.1 Signal block diagram ....................................................................................... 15-8
15.4.2 Electric circuit description ................................................................................ 15-9
15.5 Disassembly and Replacement..................................................................................... 15-14
15.5.1 RADF ............................................................................................................. 15-14
15.5.2 RADF front cover ........................................................................................... 15-15
15.5.3 RADF rear cover ............................................................................................ 15-16
15.5.4 Original jam access cover.............................................................................. 15-17
15.5.5 RADF left cover ............................................................................................. 15-18
15.5.6 Original tray ................................................................................................... 15-18
15.5.7 Original reverse tray ...................................................................................... 15-19
15.5.8 Platen sheet unit ............................................................................................ 15-19
15.5.9 RADF exit tray ............................................................................................... 15-20
15.5.10 Reading start guide unit................................................................................. 15-21
15.5.11 Exit guide / Exit/reverse guide / Reading end guide ...................................... 15-22
15.5.12 Paper feeder unit ........................................................................................... 15-24
15.5.13 Pickup roller .................................................................................................. 15-25
15.5.14 Feed roller ..................................................................................................... 15-26
15.5.15 Separation roller ........................................................................................... 15-27
15.5.16 Original registration roller............................................................................... 15-28
15.5.17 Intermediate transport roller........................................................................... 15-29
15.5.18 Reading start roller ........................................................................................ 15-30
15.5.19 Reading end roller ......................................................................................... 15-32
15.5.20 Exit roller........................................................................................................ 15-33
15.5.21 Exit/reverse roller........................................................................................... 15-34
15.5.22 Exit intermediate roller ................................................................................... 15-35
15.5.23 Reverse roller ................................................................................................ 15-36
15.5.24 Original feed motor (MR1) ............................................................................. 15-38
15.5.25 Original feed motor bracket ........................................................................... 15-38
15.5.26 Read motor (MR2) ......................................................................................... 15-39
15.5.27 Read motor bracket ....................................................................................... 15-40
15.5.28 Original reverse motor (MR3) ........................................................................ 15-41
15.5.29 Original exit motor (MR4)............................................................................... 15-41
15.5.30 RADF cooling fan (FR1) ................................................................................ 15-42
15.5.31 Original pickup solenoid (SOLR1) ................................................................. 15-43
15.5.32 Original reverse solenoid (SOLR2)................................................................ 15-44
15.5.33 Original exit solenoid (SOLR3) ...................................................................... 15-45
15.5.34 Original jam access cover opening/closing switch (SWR1) ........................... 15-46
15.5.35 RADF opening/closing switch (SWR2) .......................................................... 15-46
15.5.36 RADF opening/closing sensor (SR15) ........................................................... 15-48
15.5.37 Original empty sensor (SR3) ......................................................................... 15-48
15.5.38 Original jam access cover opening/closing sensor (SR13) ........................... 15-49
15.5.39 Feeder lower guide unit ................................................................................. 15-49
15.5.40 Original width detection sensor-3 (SR8) ........................................................ 15-50
15.5.41 Original width detection sensor-2 (SR7) ........................................................ 15-50
15.5.42 Original width detection sensor-1 (SR6) ........................................................ 15-51
15.5.43 Original registration sensor (SR5) ................................................................. 15-51
15.5.44 Original exit sensor (SR12)............................................................................ 15-51
15.5.45 Original tray sensor (SR1) ............................................................................. 15-52
e-STUDIO555/655/755/855
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