VIII-75
I-15
White Spot / Black Spot
Phenomenon
White spots and black spots appear on the print as shown in
print sample (15) of Fig.8-2
.
Main Causes
1) Foreign particles adhere to the OPC belt or the transfer belt.
2) The OPC belt or the transfer belt is damaged.
3) Foreign particles mixed in the toner.
4) Foreign particles adhering to the transfer roller PU, or local deformation of transfer
roller PU.
Belt Cartridge PU
OPC Belt
Transfer Roller PU
Transfer Belt
Rear Cover Assy PU
Countermeasures
1) Remove the belt cartridge PU.
1-1) Lightly wipe off the foreign particles adhering to OPC belt, using cotton cloth.
1-2) Replace the damaged belt cartridge with a new cartridge.
2) Open the rear cover ASSY PU, and check the transfer belt surface.
2-1) With the cotton cloth, lightly wipe off the foreign particles adhering to the transfer
belt.
2-2) Replace the damaged rear cover ASSY PU with a new rear cover ASSY PU.
3) Remove the toner cartridge PU.
3-1) Replace the toner cartridge PU with a new cartridge PU.
4) Replace the transfer roller ASSY PU with a new transfer roller ASSY PU.
Содержание HL-2700CN Series
Страница 16: ...viii 3 Rating Label 6 0A 11 0A For Europe For US ...
Страница 18: ...CHAPTER I PRODUCT OUTLINE ...
Страница 27: ...CHAPTER II SPECIFICATIONS ...
Страница 39: ...III 1 CHAPTER III INSTALLATION ...
Страница 53: ...CHAPTER IV STRUCTURE OF SYSTEM COMPONENTS ...
Страница 84: ...IV 31 Layout of Clutches and Solenoids 1 2 3 4 5 6 7 8 9 10 Fig 4 30 ...
Страница 90: ...IV 37 ...
Страница 93: ...IV 40 c Interface Circuit Printer side Table 4 1 Interface Circuit ...
Страница 102: ...IV 49 Main PCB circuit Diagram 1 7 IV 49 CODE B512168CIR 1 7 LJ9515001 NAME ...
Страница 103: ...IV 50 Main PCB circuit Diagram 2 7 IV 50 CODE B512168CIR 2 7 LJ9515001 NAME ...
Страница 104: ...IV 51 Main PCB circuit Diagram 3 7 IV 51 CODE B512168CIR 3 7 LJ9515001 NAME ...
Страница 105: ...IV 52 Main PCB circuit Diagram 4 7 IV 52 CODE B512168CIR 4 7 LJ9515001 NAME ...
Страница 106: ...IV 53 Main PCB circuit Diagram 5 7 IV 53 CODE B512168CIR 5 7 LJ9515001 NAME ...
Страница 107: ...IV 54 Main PCB circuit Diagram 6 7 IV 54 CODE B512168CIR 6 7 LJ9515001 NAME ...
Страница 108: ...IV 55 Main PCB circuit Diagram 7 7 IV 55 CODE B512168CIR 7 7 LJ9515001 NAME ...
Страница 110: ...IV 57 Layout of Connector Pin Assignment Power Supply Unit Fig 4 40 ...
Страница 118: ...IV 65 1 MCTL P W B I1CN IOD P W B DCN1 2 MCTL P W B I2CN IOD P W B DCN3 ...
Страница 124: ...IV 71 30 Duplex Connector 31 Lower Feeder Connector 32 DCN2 IOD 33 DCN8 IOD LaserFan ...
Страница 125: ...CHAPTER V CONTROL PANEL OPERATION ...
Страница 171: ...CHAPTER VI PERIODIC MAINTENANCE ...
Страница 197: ...CHAPTER VII DISASSEMBLY ...
Страница 200: ...VII 3 Table 7 1 Table of Applicable Screws ...
Страница 257: ...CHAPTER VIII TROUBLESHOOTING ...
Страница 316: ...VIII 59 5 IMAGE FAILURE 1 2 3 4 5 6 7 8 9 10 11 12 13 14 ...
Страница 317: ...VIII 60 15 a 15 b 16 17 18 19 20 21 22 23 24 25 Fig 8 2 ...
Страница 346: ...A 4 6 Transfer Unit X X X X X X 7 1 2 3 Location DATE MONTH SERIAL NO YEAR ...