Toshiba e-STUDIO281c Service Manual page 10

14.4 Outline of 1st transfer ........................................................................................................ 14-5
14.5 Outline of 2nd transfer ....................................................................................................... 14-6
14.6 High-Voltage Transformer Output Control Circuit.............................................................. 14-7
14.7 Disassembly and Replacement ......................................................................................... 14-8
15. IMAGE QUALITY CONTROL ..................................................................................... 15-1
15.1 General Description ........................................................................................................... 15-1
15.2 Principle of the Sensor....................................................................................................... 15-2
15.3 Flow Chart of Control Procedure ....................................................................................... 15-3
15.4 Construction....................................................................................................................... 15-4
15.5 Disassembly and Replacement ......................................................................................... 15-5
16. FUSER UNIT / PAPER EXIT SECTION...................................................................... 16-1
16.1 General Description ........................................................................................................... 16-1
16.2 Construction....................................................................................................................... 16-2
16.3 Functions ........................................................................................................................... 16-3
16.4 Operation ........................................................................................................................... 16-5
16.5 Heater Control Circuit ........................................................................................................ 16-6
16.5.1 Configuration .......................................................................................................... 16-6
16.5.2 Heating principle of IH Heater ................................................................................ 16-7
16.5.3 IH control circuit interface ....................................................................................... 16-8
16.5.4 Relation between system configuration and IH output ........................................... 16-9
16.5.5 Abnormality in the IH control circuit ...................................................................... 16-10
16.5.6 Temperature detection section ............................................................................. 16-12
16.6 Control Circuit of Exit Motor............................................................................................. 16-18
16.7 Disassembly and Replacement ....................................................................................... 16-19
17. AUTOMATIC DUPLEXING UNIT (ADU)..................................................................... 17-1
17.1 General Description ........................................................................................................... 17-1
17.2 Construction....................................................................................................................... 17-2
17.3 Functions ........................................................................................................................... 17-3
17.4 Drive of ADU...................................................................................................................... 17-4
17.5 Description of Operations .................................................................................................. 17-5
17.6 Flow Chart ....................................................................................................................... 17-10
17.7 Disassembly and Replacement ....................................................................................... 17-12
18. POWER SUPPLY UNIT .............................................................................................. 18-1
18.1 Construction....................................................................................................................... 18-1
18.2 Operation of DC Output Circuits ........................................................................................ 18-2
18.3 Output Channel ................................................................................................................. 18-3
18.4 Fuse................................................................................................................................... 18-5
18.5 Configuration of Power Supply Unit................................................................................... 18-6
18.6 Sequence of Power Supply ............................................................................................... 18-7
18.7 AC Wire Harness ............................................................................................................... 18-8
19. PC BOARDS ............................................................................................................... 19-1
e-STUDIO281c/351c/451c CONTENTS
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June 2005 © TOSHIBA TEC