Toshiba e-STUDIO281c Service Manual page 9

10.4.5 General operation................................................................................................... 10-6
10.5 Drive Circuit of Tray-up Motor............................................................................................ 10-8
10.6 Disassembly and Replacement ......................................................................................... 10-9
11. DRUM RELATED SECTION ....................................................................................... 11-1
11.1 General Description ........................................................................................................... 11-1
11.2 Construction....................................................................................................................... 11-2
11.3 Functions ........................................................................................................................... 11-3
11.4 Output Control Circuits of High-Voltage Transformer ........................................................ 11-5
11.5 Drum Temperature Detection Circuit ................................................................................. 11-6
11.6 Temperature/Humidity Sensor (S19) ................................................................................. 11-7
11.6.1 General description ................................................................................................ 11-7
11.6.2 Construction ........................................................................................................... 11-7
11.7 Charger Wire Cleaner........................................................................................................ 11-8
11.7.1 Operation................................................................................................................ 11-8
11.7.2 Construction ........................................................................................................... 11-8
11.7.3 Drive circuit............................................................................................................. 11-9
11.8 Disassembly and Replacement ....................................................................................... 11-10
12. DEVELOPER UNIT ..................................................................................................... 12-1
12.1 General Description ........................................................................................................... 12-1
12.2 Construction....................................................................................................................... 12-2
12.3 Black Toner Cartridge Drive Unit ....................................................................................... 12-3
12.3.1 General descriptions .............................................................................................. 12-3
12.3.2 Toner motor (M3) ................................................................................................... 12-3
12.4 Black Developer Unit ......................................................................................................... 12-4
12.4.1 Functions ................................................................................................................ 12-4
12.4.2 Black developer unit drive section .......................................................................... 12-5
12.4.3 Black auto-toner sensor circuit ............................................................................... 12-6
12.4.4 Black developer unit lifting mechanism .................................................................. 12-8
12.5 Color Developer Unit ......................................................................................................... 12-9
12.5.1 Functions ................................................................................................................ 12-9
12.5.2 Color developer unit drive section ........................................................................ 12-10
12.5.3 Color auto-toner sensor circuit ............................................................................. 12-11
12.5.4 Color toner supply ................................................................................................ 12-13
12.6 High-Voltage Transformer Output Control Circuit............................................................ 12-14
12.7 Disassembly and Replacement ....................................................................................... 12-15
13. REVOLVER UNIT........................................................................................................ 13-1
13.1 General Description ........................................................................................................... 13-1
13.2 Construction....................................................................................................................... 13-2
13.3 Functions ........................................................................................................................... 13-3
13.4 Drive of Revolver Unit........................................................................................................ 13-4
13.5 Revolver Motor Drive Circuit.............................................................................................. 13-5
13.6 Operation ........................................................................................................................... 13-6
13.6.1 Home position detection ......................................................................................... 13-6
13.6.2 Escape position movement .................................................................................... 13-6
13.6.3 During warming-up ................................................................................................. 13-6
13.6.4 During printing ........................................................................................................ 13-6
13.6.5 Color toner supply .................................................................................................. 13-7
13.6.6 During image quality control ................................................................................... 13-7
13.7 Disassembly and Replacement ......................................................................................... 13-8
14. TRANSFER UNIT........................................................................................................ 14-1
14.1 General Descriptions ......................................................................................................... 14-1
14.2 Construction....................................................................................................................... 14-2
14.3 Functions ........................................................................................................................... 14-3
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e-STUDIO281c/351c/451c
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