Service Guide
51
Streaks in direction of paper travel
There are dark lines running along
the page in the direction of paper
travel from the leading edge to the
trailing edge (B-size print shown).
The printer displays no error code.
Note
A-size prints are processed
through the printer with the
short edge of the print parallel to
the direction of the paper path
making horizontal print artifacts
parallel to the shot edge of the
print.
In B-size prints are processed
through the printer with the long
edge of the print parallel to the
paper path making horizontal
artifacts parallel to the long axis
of the print.
1.
Inspect the paper path, between feed and exit, for contamination or
obstructions. Is the paper path free of contamination or obstructions?
2.
Check for dirty fuser guide rollers. Also look for toner contamination on
the fuser’s temperature sensor.
3.
Print Service Print 4 and open the front cover just before the sheet of
paper enters the fuser.
4.
Remove the imaging unit.
5.
Inspect the image on the drum. Is there a normal test print image,
without any streaks, visible on the drum? If yes, go to Step 6. If not,
replace the imaging unit.
6.
Inspect the image on the surface of the accumulator belt. Is there a
normal test print image, without any streaks, visible on the surface of the
accumulator belt? If no, replace the accumulator belt. If yes, inspect the
accumulator belt cleaner’s plastic shield for damage; replace the belt
cleaner, if necessary. Replace the second bias transfer roller.
7.
Generate a test print and open the front cover just as the sheet of paper
exits the fuser.
8.
Inspect the image on the sheet of paper just after the paper exits the fuser.
Is there a normal test print image on the sheet of paper before entering the
fuser but the image has visible streaks after it exits the fuser? If yes,
replace the fuser roll cartridge. If streaks continue to occur, replace the
fuser.
9.
Remove the top cover.
3041-42
Leading Edge
Содержание Phaser 780 Color
Страница 6: ......
Страница 10: ...x Phaser 780 Color Printer FRU List 137 Supplies and accessories 176 Test Prints 179 Wiring Diagrams 185 ...
Страница 32: ...18 Phaser 780 Color Printer ...
Страница 90: ...76 Phaser 780 Color Printer ...
Страница 94: ...80 Phaser 780 Color Printer ...
Страница 117: ...Service Guide 103 Removing the developer tie plate 780 5 82 Wire clamp Developer tie plate ...
Страница 120: ...106 Phaser 780 Color Printer Removing the carousel assembly 780 5 54 Rear bearing Carousel assembly Front bearing Screw ...
Страница 125: ...Service Guide 111 Removing the laser unit Laser unit Laser cover 780 5 47 ...
Страница 132: ...118 Phaser 780 Color Printer Removing the waste auger assembly Waste auger drive assembly Waste auger assembly 780 5 64 ...
Страница 143: ...Service Guide 129 Removing the lower exit assembly 780 5 68 Wiring harness Lower exit assembly ...
Страница 150: ...136 Phaser 780 Color Printer ...
Страница 152: ...138 Phaser 780 Color Printer Printer cabinet FRUs Z780 5 119 7a 11 6 5 3c 4 3a 2 1c 9 1c 1b 1b 1a 3b 7b 8 9 9 10 7c 12 ...
Страница 154: ...140 Phaser 780 Color Printer Paper feeder FRUs Z780 5 120 10 8 5 7 9b 9c 9d 9a 9e 4 3 2 10 1 6a 6b 7 6c 6d 6e 6f 6g ...
Страница 156: ...142 Phaser 780 Color Printer Multi purpose tray cover FRUs 780 5 121 3 1 4 2 5 ...
Страница 158: ...144 Phaser 780 Color Printer Multi purpose tray FRUs 1 4 2 3 7 6 5 8 9 780 5 122 11 12 13 10 ...
Страница 160: ...146 Phaser 780 Color Printer Paper feeder cover FRUs 780 5 123 1 2 3 ...
Страница 162: ...148 Phaser 780 Color Printer Paper feeder FRUs 1 2 3 5 4a 4b 6 7 780 5 124 ...
Страница 164: ...150 Phaser 780 Color Printer Imaging FRUs 1 2 3 4 5 6 7 780 5 125 ...
Страница 166: ...152 Phaser 780 Color Printer Developer FRUs 780 5 126 1 1 1 2 2 2 3 3 3 4 4 4 ...
Страница 168: ...154 Phaser 780 Color Printer Carousel FRUs 4c 4d 5 4b 4a 3 2 1 780 5 127 6 ...
Страница 170: ...156 Phaser 780 Color Printer Accumulator belt assembly FRUs 5 8d 2b 3 2a 1 6 7 8a 8b 8c 780 5 128 ...
Страница 172: ...158 Phaser 780 Color Printer Fuser assembly FRUs 1 2 3 780 5 129 4 ...
Страница 174: ...160 Phaser 780 Color Printer Paper exit FRUs 780 5 130 1 2 3 3 3 3 3 ...
Страница 176: ...162 Phaser 780 Color Printer Paper exit FRUs 780 5 131 1c 1c 1f 1b 1a 1a 1a 1a 1a 1a 1a 1a 1d 1e 1b 1e 1b 2 5 4 3 ...
Страница 178: ...164 Phaser 780 Color Printer Drive FRUs 780 5 132 1 2 3 4 6 5 9 8 7a 7d 7c 7c 7b ...
Страница 182: ...168 Phaser 780 Color Printer Electronics front FRUs 780 5 134 2 4 5 6 3 8 9 7 1 10 ...
Страница 184: ...170 Phaser 780 Color Printer Image processor FRUs 780 5 135 1 2 3 6 5 4 7 8 9 12 10 11 ...
Страница 186: ...172 Phaser 780 Color Printer Optional lower feeder cabinet FRUs 780 5 136 7 8 8 8 8 1 1 2 3 4 5 6 6 ...
Страница 198: ...184 Phaser 780 Color Printer ...
Страница 228: ...214 Phaser 780 Color Printer Wiring 14 LowerTray Assembly master wiring diagram 3041 59 BOARD 2 BOARD 1 BOARD 4 BOARD 3 ...
Страница 229: ...Service Guide 21 Wiring 15 Engine control board and low voltage power supply to LowerTray Assembly feeder board 3041 60 ...
Страница 231: ...Service Guide 21 Wiring 17 LowerTray Assembly feeder board to no paper sensors and low paper sensors 3041 62 ...
Страница 232: ...218 Phaser 780 Color Printer Wiring 18 LowerTray Assembly feeder board to feed solenoids and turn chutes 3041 63 ...
Страница 233: ...Service Guide 21 ...
Страница 234: ...220 Phaser 780 Color Printer ...