Samsung CLX-8640 series Service Manual page 5

3.3.19. Pick Up Unit .............................................................................................................. 3 − 32
3.3.20. OPE Unit ................................................................................................................... 3 − 33
3.3.21. DADF Unit ................................................................................................................ 3 − 34
3.3.21.1. DADF Hinge................................................................................................ 3 − 34
3.3.21.2. DADF Cover................................................................................................ 3 − 35
3.3.21.3. DADF Board................................................................................................ 3 − 37
3.3.21.4. DADF Stacker .............................................................................................. 3 − 37
3.3.21.5. DADF COVER-OPEN................................................................................... 3 − 38
3.3.21.6. DADF GUIDE-PICK UP ASSY ...................................................................... 3 − 39
3.3.21.7. DADF-EXIT UP ........................................................................................... 3 − 40
3.3.21.8. HOLDER-HARNESS .................................................................................... 3 − 40
3.3.21.9. COVER-FAN DUCT and COVER-FAN............................................................ 3 − 41
3.3.21.10. DADF-CCDM.............................................................................................. 3 − 41
3.3.21.11. DADF Drive ................................................................................................ 3 − 42
3.3.22. Scanner ..................................................................................................................... 3 − 43
3.3.22.1. Scan Glass ................................................................................................... 3 − 43
3.3.22.2. APS Sensor.................................................................................................. 3 − 44
3.3.22.3. Filter........................................................................................................... 3 − 44
3.3.22.4. COVER-GLASS ADF ................................................................................... 3 − 45
3.3.22.5. Scan Joint Board ........................................................................................... 3 − 45
3.3.22.6. Fan............................................................................................................. 3 − 46
3.3.22.7. CCDM ........................................................................................................ 3 − 47
3.3.22.8. Scanner Assy................................................................................................ 3 − 48
3.3.23. SCF (Second Cassette Feeder) with Stand ........................................................................ 3 − 49
3.3.23.1. SCF Main Board ........................................................................................... 3 − 49
3.3.23.2. SCF Lift Motor Assy ..................................................................................... 3 − 50
3.3.23.3. SCF Feed Motor Assy .................................................................................... 3 − 51
3.3.23.4. FOOT ......................................................................................................... 3 − 53
3.3.24. TCF (Triple Cassette Feeder) ......................................................................................... 3 − 55
3.3.24.1. TCF Main Board ........................................................................................... 3 − 55
3.3.24.2. TCF Lift Motor Assy ..................................................................................... 3 − 55
3.3.24.3. TCF Feed Motor Assy.................................................................................... 3 − 56
3.3.24.4. FOOT ......................................................................................................... 3 − 58
3.3.25. Finisher ..................................................................................................................... 3 − 60
3.3.26. HDD (Hard Disk Drive)................................................................................................ 3 − 64
4. Troubleshooting ..................................................................................................................................4 − 1
4.1. Control Panel ............................................................................................................................4 − 1
4.1.1. Introducing the display screen and useful buttons ................................................................4 − 2
4.2. Understanding the status LED ......................................................................................................4 − 6
4.3. Updating Firmware ....................................................................................................................4 − 7
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