Toshiba e-STUDIO2006 Service Manual page 16

3.11.3 Functions ......................................................................................................... 3-45
3.11.4 Operation ......................................................................................................... 3-46
3.12 Drum Related Section ..................................................................................................... 3-51
3.12.1 Configuration ................................................................................................... 3-51
3.12.2 Composition ..................................................................................................... 3-52
3.12.3 Functions ......................................................................................................... 3-53
3.13 Development System ...................................................................................................... 3-55
3.13.1 Configuration ................................................................................................... 3-55
3.13.2 Composition ..................................................................................................... 3-56
3.13.3 Functions ......................................................................................................... 3-57
3.14 Fuser / Exit Unit............................................................................................................... 3-61
3.14.1 General Description ......................................................................................... 3-61
3.14.2 Composition ..................................................................................................... 3-62
3.14.3 Functions ......................................................................................................... 3-63
3.14.4 Operation ......................................................................................................... 3-64
3.14.5 Heater Control Circuit ...................................................................................... 3-65
3.15 Automatic Duplexing Unit................................................................................................ 3-70
3.15.1 General Description ......................................................................................... 3-70
3.15.2 Composition ..................................................................................................... 3-71
3.15.3 Drive of ADU.................................................................................................... 3-72
3.15.4 Functions ......................................................................................................... 3-73
3.15.5 Description of Operations ................................................................................ 3-74
3.16 Power Supply Unit........................................................................................................... 3-76
3.16.1 Composition ..................................................................................................... 3-76
3.16.2 Operation of DC Output Circuits ...................................................................... 3-77
3.16.3 Output Channel................................................................................................ 3-78
4. DISASSEMBLY AND REPLACEMENT........................................................................ 4-1
4.1 Disassembly and Replacement of Covers ........................................................................ 4-1
4.1.1 Left cover <20L/23L/25L/20H/23H/25H> ........................................................... 4-1
4.1.2 Left cover <23LA/23LM/28LM/23HA/28HA> ..................................................... 4-1
4.1.3 Inner tray............................................................................................................ 4-2
4.1.4 Right front cover ................................................................................................ 4-2
4.1.5 Left front cover................................................................................................... 4-3
4.1.6 Toner supply cover ............................................................................................ 4-4
4.1.7 Tray front cover.................................................................................................. 4-4
4.1.8 Tray rear cover .................................................................................................. 4-4
4.1.9 Rear cover <20L/23L/25L/20H/23H/25H> ......................................................... 4-5
4.1.10 Rear cover <23LA/23LM/28LM/23HA/28HA>.................................................... 4-6
4.1.11 Right rear cover ................................................................................................. 4-7
4.1.12 Right lower cover ............................................................................................... 4-7
4.1.13 Right cover......................................................................................................... 4-8
4.1.14 Top cover........................................................................................................... 4-9
4.2 Control Panel .................................................................................................................. 4-10
4.2.1 Control panel unit............................................................................................. 4-10
4.2.2 Control panel PC board (HPNL) ...................................................................... 4-11
4.2.3 LED panel ........................................................................................................ 4-11
4.2.4 USB cable <20L/23L/25L/20H/23H/25H>........................................................ 4-12
4.2.5 USB cable <23LA/23LM/28LM/23HA/28HA> .................................................. 4-13
4.3 Scanner........................................................................................................................... 4-15
4.3.1 Original glass ................................................................................................... 4-15
4.3.2 Contact Image Sensor unit (CIS) ..................................................................... 4-15
4.3.3 CIS case .......................................................................................................... 4-18
4.3.4 CIS case <23LA/23LM/28LM/23HA/28HA>..................................................... 4-19
4.3.5 Scan motor (M1) <20L/23L/25L/20H/23H/25H> .............................................. 4-21
4.3.6 Scan motor (M1) <23LA/23LM/28LM/23HA/28HA> ........................................ 4-24
4.3.7 Platen sensor (S7) <20H/23H/25H, 23HA/28HA only> ................................... 4-26
4.3.8 Automatic original detection sensor-1 (S9) / Automatic original
detection sensor-2 (S10) <20H/23H/25H, 23HA/28HA only> .......................... 4-27
e-STUDIO2006/2306/2506/2007/2307/2507/2303A/2303AM/2803AM/2309A/2809A
CONTENTS
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