Samsung SCX-472 series Service Manual page 3

2.2.5.2.
2.2.5.3.
2.2.5.4.
2.2.5.5.
2.2.5.6.
2.2.5.7.
2.2.5.8.
2.2.6. Engine F/W Control Algorithm ...................................................................................... 2 − 31
2.2.6.1.
2.2.6.2.
2.2.6.3.
2.2.6.4.
2.2.7. Software Descriptions .................................................................................................. 2 − 33
2.2.7.1.
2.2.7.2.
2.2.7.3.
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. Preautions when handling PBA ...................................................................................... 3 − 1
3.1.3. Releasing Plastic Latches .............................................................................................. 3 − 2
3.2. Screws used in the printer.......................................................................................................... 3 − 3
3.3. Replacing the Main SVC parts ................................................................................................... 3 − 4
3.3.1. Cover ........................................................................................................................ 3 − 4
3.3.2. OPE.......................................................................................................................... 3 − 5
3.3.3. Scanner ..................................................................................................................... 3 − 6
3.3.4. ADF ......................................................................................................................... 3 − 7
3.3.5. ADF Roller ................................................................................................................ 3 − 7
3.3.6. ADF Motor ................................................................................................................ 3 − 8
3.3.7. Scan Motor ................................................................................................................ 3 − 9
3.3.8. CIS Unit .................................................................................................................... 3 − 10
3.3.9. Middle Cover ............................................................................................................. 3 − 11
3.3.10. Fax Board .................................................................................................................. 3 − 12
3.3.11. Main board................................................................................................................. 3 − 12
3.3.12. SMPS board ............................................................................................................... 3 − 13
3.3.13. HVPS board ............................................................................................................... 3 − 13
3.3.14. Bin-Full sensor ........................................................................................................... 3 − 14
3.3.15. Main Drive Unit.......................................................................................................... 3 − 14
3.3.16. Pick up and Regi Clutch ............................................................................................... 3 − 15
3.3.17. Pick up and Forward roller ............................................................................................ 3 − 16
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OPE board ................................................................................................... 2 − 23
Wireless LAN board (SCX-4729FW only) ....................................................... 2 − 24
Fax board .................................................................................................... 2 − 24
Joint PBA .................................................................................................... 2 − 25
SMPS Board ................................................................................................ 2 − 26
HVPS Board ................................................................................................ 2 − 28
Electrical Parts Location ................................................................................. 2 − 29
Feeding ....................................................................................................... 2 − 31
Transfer....................................................................................................... 2 − 31
Fusing......................................................................................................... 2 − 32
LSU............................................................................................................ 2 − 32
Software system overview .............................................................................. 2 − 33
Architecture ................................................................................................. 2 − 33
Data and Control Flow ................................................................................... 2 − 34
Contents
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