Samsung SCX-472 series Service Manual page 4

Contents
3.3.18. Retard roller ............................................................................................................... 3 − 17
3.3.19. Duplex unit ................................................................................................................ 3 − 18
3.3.20. Transfer roller............................................................................................................. 3 − 19
3.3.21. LSU.......................................................................................................................... 3 − 19
3.3.22. Fuser unit................................................................................................................... 3 − 20
3.3.23. Exit Sensor................................................................................................................. 3 − 20
3.3.24. Feed and Regi sensor ................................................................................................... 3 − 21
3.3.25. Motor........................................................................................................................ 3 − 22
4. Alignment and Troubleshooting ........................................................................................................... 4 − 1
4.1. Alignment and Adjustments....................................................................................................... 4 − 1
4.1.1. Control Panel.............................................................................................................. 4 − 1
4.1.2. Understanding the status LED........................................................................................ 4 − 3
4.1.3. JAM Removal............................................................................................................. 4 − 4
4.1.3.1.
4.1.3.2.
4.1.4. Useful menu item for service ......................................................................................... 4 − 11
4.1.5. Periodic defective image ............................................................................................... 4 − 13
4.1.6. Useful management tools .............................................................................................. 4 − 14
4.1.6.1.
4.1.6.2.
4.1.6.3.
4.1.7. Updating Firmware ...................................................................................................... 4 − 18
4.1.7.1.
4.1.7.2.
4.1.8. Tech Mode ................................................................................................................. 4 − 21
4.2. Troubleshooting ...................................................................................................................... 4 − 26
4.2.1. Procedure of checking the symptoms............................................................................... 4 − 26
4.2.1.1.
4.2.2. Error Code and Troubleshooting..................................................................................... 4 − 28
4.2.3. Image quality problem.................................................................................................. 4 − 42
4.2.4. Other errors ................................................................................................................ 4 − 48
5. System Diagram................................................................................................................................ 5 − 1
5.1. Block Diagram ........................................................................................................................ 5 − 1
5.2. Connection Diagram................................................................................................................. 5 − 2
6. Reference Information........................................................................................................................ 6 − 1
6.1. Tool for Troubleshooting ........................................................................................................... 6 − 1
6.2. Glossary................................................................................................................................. 6 − 2
6.3. The Sample Pattern for the Test .................................................................................................. 6 − 8
6.4. Selecting a location .................................................................................................................. 6 − 9
iii
Clearing original document jams ...................................................................... 4 − 4
Clearing paper jams ....................................................................................... 4 − 7
Using Samsung Easy Printer Manager (Windows/Mac only).................................. 4 − 14
Using Samsung Printer Status (Windows only) ................................................... 4 − 16
Using Smart Panel (Linux only) ....................................................................... 4 − 17
Update the firmware by using the USB port........................................................ 4 − 18
Update the firmware by using the network.......................................................... 4 − 19
Basic Check List ........................................................................................... 4 − 27
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