Diagnostic Information 2-13
Fuser Service Check
Image Quality Service Check
Before you troubleshoot a print quality problem, do the following:
•
Install another print unit if available
•
Use Tray 1 to test for quality of the base printer
Select the following settings. Be sure to note the original settings so
you can return the printer to the original setup.
•
Print Resolution: Set to 300 dpi (print quality problems should
be checked at different resolution settings)
•
Toner Saver: Set to off.
•
PQET: Set to off.
•
Print Darkness: Adjust knob to the middle setting.
FRU
Action
1
920 Fuser
Error, Lamp
does not come
on
Check the connection of the lamp cable at the
LVPS and at the thermal fuse. Be sure the lamp is
not burned out or broken.
Check the thermal fuse for conductivity. If the ther-
mal fuse conducts no current, replace the fuser.
If the connections are correct the lamp is good and
the thermal fuse is good. Replace the following
FRUs in the order shown:
1. LVPS
2. Engine Board
2
920 Fuser
Error, Lamp
does turn on
Check the fuser for signs of excessive toner buildup
on the hot roll, backup roll, and thermistor. Be sure
the Thermistor is not bent, loose, or in the wrong
position. The thermistor should make contact with
the hot roll. Be sure the resistance of the thermistor
is between the range of 50 Ohms (hot) and 60k
Ohms (cold). If the resistance is out of this range,
replace the fuser. If you still have the problem
replace the following FRUs in the order shown:
1. LVPS
2. Engine Board
Содержание Optra K 4046
Страница 15: ...Notices and Safety Information xv Chinese Laser Notice Korean Laser Notice ...
Страница 19: ...Notices and Safety Information xix ...
Страница 20: ...xx Service Manual ...
Страница 26: ...1 6 is transmitted to the paper feed roller ...
Страница 29: ...General Information 1 9 to the upper exit bin Roller gears receive power from the hot roll gear ...
Страница 30: ...1 10 ...
Страница 60: ...2 30 ...
Страница 91: ...Repair Information 4 15 7 Remove four screws and disconnect the cable to remove the main motor ...
Страница 97: ...Repair Information 4 21 ...
Страница 105: ...Repair Information 4 29 Installation Note Install the fan so the air flow arrow is to the outside ...
Страница 109: ...Locations 5 1 5 Locations Front and Right Side of Printer ...
Страница 110: ...5 2 Rear and Left Side of Printer ...
Страница 111: ...Locations 5 3 Interior of Printer with Upper Door Open ...
Страница 112: ...Locations 5 4 Optional Multi Function Feeder and Paper Feeder ...
Страница 113: ...Locations 5 5 Sensors ...
Страница 114: ...5 6 EP Diagram ...
Страница 115: ...Locations 5 7 Engine Board ...
Страница 116: ...Locations 5 8 Control Board ...
Страница 117: ...Locations 5 9 Power Supply Board ...
Страница 118: ...5 10 Interconnect Board ...
Страница 120: ...6 2 Assembly 1 Upper Cover ...
Страница 122: ...6 4 Assembly 2 Covers ...
Страница 124: ...6 6 Assembly 3 Electronics ...
Страница 126: ...6 8 Assembly 3 Electronics cont ...
Страница 128: ...6 10 Assembly 4 Frame Left Side ...
Страница 130: ...6 12 Assembly 5 Frame Right Side ...
Страница 132: ...6 14 Assembly 6 Input Paper Feed ...
Страница 134: ...6 16 Assembly 7 Printhead and Paper Feed Redrive ...
Страница 136: ...6 18 Assembly 8 Exit Paper Feed Frame ...
Страница 138: ...6 20 Assembly 9 Fuser ...
Страница 140: ...6 22 Assembly 10 Paper Tray 250 Sheet ...
Страница 142: ...6 24 Assembly 11 Optional 450 Sheet Second Paper Tray ...
Страница 144: ...6 26 Assembly 12 Optional 450 Sheet Second Paper Drawer 2 ...
Страница 146: ...6 28 Assembly 13 Optional 450 Sheet Second Paper Drawer 2 ...
Страница 148: ...6 30 Assembly 14 Optional Multi Function Feeder ...
Страница 149: ...Parts Catalog 6 31 Ref Part Number Units Description 14 1 12A4024 1 Feeder Multi Function ...
Страница 152: ...6 34 ...