Toshiba MR-2017, MR-2020

TROUBLESHOOTING

6 - 6

Contents

Main Trademarks General Precautions for Installation/Servicing/Maintenance for the MR-2017/2020 The installation and service should be done by a qualified service technician. Page CONTENTS Page 1. SPECIFICATION Page 2. GENERAL DESCRIPTION 2.1 Main Components Drive/Control section Feeding/Transporting section Original tray section Original exit tray section 2.2 Sectional View 2.3 Electric Parts Layout 2.4 Symbols and Functions of Various Components 1) Motors 2) Sensors and Switches 3) Solenoid 4) PC board 2.5 Diagram of Signal Blocks 2.6 Description of Interface Signals RADF Equipment 3. DESCRIPTION OF OPERATIONS 3.1 DRIVE SYSTEM 3.1.1 Outline 3.1.2 Original feed motor drive section Pickup roller 3.1.3 Read motor drive section 3.2 Original Size Detection 3.2.1 Outline 3.2.2 Original tray width sensor 3.3 FLOW CHART Page Page Page 3.4 DESCRIPTION OF CIRCUIT 3.4.1 Drive Circuit for Feed Motor 3.4.2 Drive Circuit for Read Motor 3.4.3 Reset Circuit 3.4.4 Drive Circuit for Pickup Solenoid Page 4. DISASSEMBLY AND ASSEMBLY 4.1 Cover Page Page Page 4.2 Roller Page Page Page Page Page Page Page Page Page Page 4.3 Motor / Motor drive section Page Page Page Page 4.4 Solenoid 4.5 Sensor/switch Page Page Page Page Page Page 4.6 PC Board 4.7 Others 5. ADJUSTMENT 5.1 Adjustment of Position Page Page Page Page Page 5.2 Adjustment of Height Page 5.3 Adjustment of Skew Page 5.4 Adjustment of the Leading Edge Position EF 5.5 Adjustment of Horizontal Position G H 5.6 Adjustment of Copy Ratio I Page 6. TROUBLESHOOTING 6.1 Troubleshooting for Mechanical Errors 6.2 Troubleshooting for Electrical Errors 6.3 Jam Page Page Page 7. MAINTENANCE AND REWRITING ROM 7.1 Periodic Maintenance Symbols used in the checklist 1234 5 67 8 9 7.2 Rewriting ROM (Firmware Updating) 8. CIRCUIT DIAGRAM / HARNESS DIAGRAM 8.1 Assembly of PC Board 8 - 2 8.2 Circuit Diagram 09/12 Fig. 8-3 PWA-F-DLM-320 PWA-F-DLG-644 PWA-F-DLG-643 8 - 3 Fig. 8-4 Original tray sensor Original tray