Contents
2.2.5.5.
HVPS board ................................................................................................. 2 − 27
2.2.5.6.
ITB EEPROM PBA....................................................................................... 2 − 28
2.2.5.7.
Electrical Parts Location ................................................................................. 2 − 29
2.2.6.
Engine F/W Control Algorithm ...................................................................................... 2 − 31
2.2.6.1.
Feeding ....................................................................................................... 2 − 31
2.2.6.2.
Transfer....................................................................................................... 2 − 31
2.2.6.3.
Fusing......................................................................................................... 2 − 32
2.2.6.4.
LSU............................................................................................................ 2 − 32
2.2.7.
Software Descriptions .................................................................................................. 2 − 33
2.2.7.1.
Software system overview .............................................................................. 2 − 33
2.2.7.2.
Architecture ................................................................................................. 2 − 33
2.2.7.3.
Data and Control Flow ................................................................................... 2 − 34
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.
Screws used in the printer.......................................................................................................... 3 − 3
3.3.
Replacing the maintenance parts ................................................................................................. 3 − 4
3.3.1.
Toner Cartridge ........................................................................................................... 3 − 4
3.3.2.
Waste Toner Container ................................................................................................. 3 − 5
3.3.3.
ITB Unit .................................................................................................................... 3 − 6
3.3.4.
Fuser Unit .................................................................................................................. 3 − 8
3.3.5.
Transfer Roller Assy .................................................................................................... 3 − 9
3.3.6.
Pick up_Forward_Reverse roller..................................................................................... 3 − 9
3.4.
Replacing the main SVC parts .................................................................................................... 3 − 10
3.4.1.
Cover ........................................................................................................................ 3 − 10
3.4.2.
HVPS board ............................................................................................................... 3 − 12
3.4.3.
Outer Temperature Sensor ............................................................................................. 3 − 12
3.4.4.
Waste toner container sensor.......................................................................................... 3 − 13
3.4.5.
LSU.......................................................................................................................... 3 − 13
3.4.6.
Main Board ................................................................................................................ 3 − 14
3.4.7.
SMPS board ............................................................................................................... 3 − 14
3.4.8.
Feed Drive Unit .......................................................................................................... 3 − 15
3.4.9.
FRAME-RETARD ...................................................................................................... 3 − 16
3.4.10.
Main Drive Unit .......................................................................................................... 3 − 17
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
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