© 2005 - 2009 TOSHIBA TEC CORPORATION All rights reserved MR-2017/2020
CONTENTS
1
CONTENTS
MR-2017/2020

1. SPECIFICATION........................................................................................................... 1-1

2. GENERAL DESCRIPTION............................................................................................2-1

2.1 Main Components................................................................................................................2-1
2.2 Sectional View..................................................................................................................... 2-2
2.3 Electric Parts Layout............................................................................................................2-3
2.4 Symbols and Functions of Various Components.................................................................2-4
2.5 Diagram of Signal Blocks.....................................................................................................2-5
2.6 Description of Interface Signals........................................................................................... 2-6

3. DESCRIPTION OF OPERATIONS ...............................................................................3-1

3.1 DRIVE SYSTEM..................................................................................................................3-1
3.1.1 Outline...................................................................................................................... 3-1
3.1.2 Original feed motor drive section..............................................................................3-2
3.1.3 Read motor drive section.................................................................... ..................... 3-3
3.2 Original Size Detection........................................................................................................ 3-4
3.2.1 Outline...................................................................................................................... 3-4
3.2.2 Original tray width sensor......................................................................................... 3-4
3.3 FLOW CHART..................................................................................................................... 3-5
3.4 DESCRIPTION OF CIRCUIT...............................................................................................3-9
3.4.1 Drive Circuit for Feed Motor..................................................................................... 3-9
3.4.2 Drive Circuit for Read Motor................................................................................... 3-10
3.4.3 Reset Circuit .......................................................................................................... 3-11
3.4.4 Drive Circuit for Pickup Solenoid ...........................................................................3-11

4. DISASSEMBLY AND ASSEMBLY............................................................................... 4-1

4.1 Cover................................................................................................................................... 4-1
4.2 Roller................................................................................................................. ..................4-5
4.3 Motor / Motor drive section ............................................................................................... 4-16
4.4 Solenoid.............................................................................................................................4-21
4.5 Sensor/switch........................................................................................................... .........4-22
4.6 PC Board........................................................................................................................... 4-29
4.7 Others................................................................................................................................ 4-30

5. ADJUSTMENT.............................................................................................................. 5-1

5.1 Adjustment of Position......................................................................................................... 5-1
5.2 Adjustment of Height........................................................................................................... 5-7
5.3 Adjustment of Skew............................................................................................................. 5-9
5.4 Adjustment of the Leading Edge Position..........................................................................5-11
5.5 Adjustment of Horizontal Position......................................................................................5-12
5.6 Adjustment of Copy Ratio.................................................................................................. 5-13
5.7 Adjustment of ADF Opening/Closing Sensor.....................................................................5-14

6. TROUBLESHOOTING.................................................................................................. 6-1

6.1 Troubleshooting for Mechanical Errors................................................................................6-1
6.2 Troubleshooting for Electrical Errors................................................................................... 6-2
6.3 Jam...................................................................................................................................... 6-3

7. MAINTENANCE AND REWRITING ROM ....................................................................7-1

7.1 Periodic Maintenance.......................................................................................................... 7-1
7.2 Rewriting ROM (Firmware Updating)...................................................................................7-2

8. CIRCUIT DIAGRAM / HARNESS DIAGRAM............................................................... 8-1

8.1 Assembly of PC Board.........................................................................................................8-1
8.2 Circuit Diagram.................................................................................................................... 8-2