Diagnostic aids
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Step 1: Charge
Voltage is sent from the high-voltage power supply (HVPS) to the charge roll, which places a uniform negative
electrostatic charge on the surface of the drum. The drum surface is made of a photoconductive material that
holds an electrical charge as long as the drum is not exposed to light. Light striking the drum causes the surface
charge to neutralize.
The charge roll is a conductive roll that is positioned slightly above the surface of the drum. The HVPS supplies
the charge roll with two voltages: a negative DC charge voltage and an AC discharge voltage that is used for
electrically cleaning the drum.
HVPS
(-VDC)
(-VDC)
Ground
Conductive Tube
Photoconductive
Surface
0V
-VDC value
DRUM
Drum Surface
Voltage
Drum Surface
Image
Ground
Charge roll
HVPS
(-VDC)
(-VDC)
Ground
Conductive Tube
Photoconductive
Surface
0V
-VDC value
DRUM
Drum Surface
Voltage
Drum Surface
Image
Ground
Charge roll
Содержание X95 series
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Страница 464: ...3 112 Service Manual 7558 xxx Go Back Previous Next TTM theory of operations ...
Страница 471: ...Diagnostic aids 3 119 7558 xxx Go Back Previous Next 3TM theory of operations ...
Страница 477: ...Diagnostic aids 3 125 7558 xxx Go Back Previous Next 1TM theory of operations ...
Страница 483: ...Diagnostic aids 3 131 7558 xxx Go Back Previous Next High capacity feeder theory of operations ...
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Страница 506: ...4 12 Service Manual 7558 xxx Go Back Previous Next 6 Remove the operator panel top cover ...
Страница 512: ...4 18 Service Manual 7558 xxx Go Back Previous Next 5 Remove the rear lower cover ...
Страница 528: ...4 34 Service Manual 7558 xxx Go Back Previous Next 8 Disconnect all the cables from the bridge PCBA ...
Страница 586: ...4 92 Service Manual 7558 xxx Go Back Previous Next 10 Remove the duct from the machine 11 Release the two hooks ...
Страница 619: ...Repair information 4 125 7558 xxx Go Back Previous Next 4 Detach the media feed lift motor ...
Страница 704: ...4 210 Service Manual 7558 xxx Go Back Previous Next 8 Remove the LED ...
Страница 730: ...4 236 Service Manual 7558 xxx Go Back Previous Next 14 Remove the flatbed scanner assembly ...
Страница 734: ...4 240 Service Manual 7558 xxx Go Back Previous Next 5 Disconnect the cable B 6 Remove the tension spring C ...
Страница 801: ...Repair information 4 307 7558 xxx Go Back Previous Next 5 Disconnect the cable B 6 Remove the bridge drive motor ...
Страница 953: ...Repair information 4 459 7558 xxx Go Back Previous Next 7 Remove sensor tray 5 pre feed C A C B Connector ...
Страница 1004: ...5 34 Service Manual 7558 xxx Go Back Previous Next P J675 2 P J676 3 P904 15 Plug Jack Callout Plug jack description Connects to ...
Страница 1038: ...6 12 Service Manual 7558 xxx Go Back Previous Next ...
Страница 1076: ...7 38 Service Manual 7558 xxx Go Back Previous Next Assembly 37 TTM media feed 2 ...
Страница 1112: ...7 74 Service Manual 7558 xxx Go Back Previous Next Assembly 71 Finisher punch 8 4 3 10 11 ...
Страница 1148: ...7 110 Service Manual 7558 xxx Go Back Previous Next Assembly 103 continued High capacity feed HCF media tray lift 2 1 4 6 7 5 3 ...
Страница 1150: ...7 112 Service Manual 7558 xxx Go Back Previous Next Assembly 104 High capacity feed HCF media feed unit 1 4 3 5 6 7 2 1 ...
Страница 1152: ...7 114 Service Manual 7558 xxx Go Back Previous Next Assembly 105 High capacity feed HCF media feed unit 2 1 2 3 4 7 6 5 ...
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