Samsung ProXpress M4030 Series Service Manual page 3

2.9.1. Main board................................................................................................................. 2 − 30
2.9.2. OPE.......................................................................................................................... 2 − 31
2.9.3. SO-DIMM PBA .......................................................................................................... 2 − 33
2.9.4. CRUM PBA ............................................................................................................... 2 − 33
2.9.5. SCF board.................................................................................................................. 2 − 34
2.9.6. NFC Optional Board (SL-NWE001X) ............................................................................. 2 − 35
2.9.7. SMPS board ............................................................................................................... 2 − 36
2.9.8. HVPS board ............................................................................................................... 2 − 38
2.9.9. Electrical Parts Location ............................................................................................... 2 − 40
3. Disassembly and Reassembly .............................................................................................................. 3 − 1
3.1. Precautions when replacing parts ................................................................................................ 3 − 1
3.1.1. Precautions when assembling and disassembling ............................................................... 3 − 1
3.1.2. Precautions when handling PBA..................................................................................... 3 − 1
3.1.3. Releasing Plastic Latches .............................................................................................. 3 − 2
3.2. Replacing the maintenance part .................................................................................................. 3 − 3
3.2.1. Fuser Unit .................................................................................................................. 3 − 3
3.2.2. Transfer Roller............................................................................................................ 3 − 5
3.2.3. Separation Roller......................................................................................................... 3 − 6
3.2.4. Pick-up Roller and Forward Roller.................................................................................. 3 − 7
3.2.5. SCF Separation Roller .................................................................................................. 3 − 8
3.2.6. SCF Pick-up Roller and Forward Roller........................................................................... 3 − 9
3.3. Replacing the main SVC part ..................................................................................................... 3 − 10
3.3.1. Right Cover................................................................................................................ 3 − 10
3.3.2. Left Cover.................................................................................................................. 3 − 11
3.3.3. Rear Cover................................................................................................................. 3 − 12
3.3.4. Main Board ................................................................................................................ 3 − 13
3.3.5. HVPS Board............................................................................................................... 3 − 14
3.3.6. SMPS Board............................................................................................................... 3 − 15
3.3.7. Duplex Motor ............................................................................................................. 3 − 16
3.3.8. Fuser Drive Unit ......................................................................................................... 3 − 17
3.3.9. Main Drive Unit.......................................................................................................... 3 − 18
3.3.10. CST-Lifting Drive Unit................................................................................................. 3 − 19
3.3.11. Paper Size Sensor ........................................................................................................ 3 − 20
3.3.12. OPE Board................................................................................................................. 3 − 21
3.3.13. LSU.......................................................................................................................... 3 − 22
3.3.14. Exit Unit.................................................................................................................... 3 − 23
3.3.15. Bin-Full Sensor ........................................................................................................... 3 − 24
3.3.16. MP Unit .................................................................................................................... 3 − 25
3.3.17. MP Roller .................................................................................................................. 3 − 27
3.3.18. Second Cassette Feeder (Optional Tray)........................................................................... 3 − 28
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