Samsung CLP-775ND Series Service Manual page 3

2.2.5.4.
2.2.5.5.
2.2.5.6.
2.2.5.7.
2.2.6. Software Descriptions .................................................................................................. 2 − 30
2.2.6.1.
2.2.6.2.
2.2.6.3.
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 a maintenance parts.................................................................................................... 3 − 6
3.3.1. Fuser Unit .................................................................................................................. 3 − 6
3.3.2. Pick-Up roller ............................................................................................................. 3 − 7
3.3.3. Retard Roller .............................................................................................................. 3 − 8
3.3.4. Dust Cleaning Kit........................................................................................................ 3 − 9
3.4. Disassembly Procedure ............................................................................................................. 3 − 10
3.4.1. Cover ........................................................................................................................ 3 − 10
3.4.2. Front Cover ................................................................................................................ 3 − 13
3.4.3. OPE Unit ................................................................................................................... 3 − 14
3.4.4. Main PBA.................................................................................................................. 3 − 14
3.4.5. HVPS board ............................................................................................................... 3 − 15
3.4.6. SMPS Board............................................................................................................... 3 − 15
3.4.7. HVPS Sub Board (AC Board) ........................................................................................ 3 − 16
3.4.8. Fuser Control Board..................................................................................................... 3 − 17
3.4.9. LSU.......................................................................................................................... 3 − 18
3.4.10. Clutch Pick-Up and Clutch-Feed .................................................................................... 3 − 19
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 − 2
4.1.3. JAM Removal............................................................................................................. 4 − 3
4.1.3.1.
4.1.4. Useful menu item for service ......................................................................................... 4 − 7
4.1.5. Periodic Defective Image .............................................................................................. 4 − 8
4.1.6. Useful management tools .............................................................................................. 4 − 9
4.1.6.1.
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HVPS sub board ........................................................................................... 2 − 25
Fuser Drive Board ......................................................................................... 2 − 26
OPE Board................................................................................................... 2 − 27
Sensor......................................................................................................... 2 − 28
Overview..................................................................................................... 2 − 30
Architecture ................................................................................................. 2 − 30
Data and Control Flow ................................................................................... 2 − 31
Clearing Paper Jams ...................................................................................... 4 − 3
Using Samsung Easy Printer Manager (Windows only) ........................................ 4 − 9
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