Printhead assembly adjustments
Printhead assembly mechanical adjustment
A printhead needs to be correctly positioned after it has been removed. Use a sharp pencil or a small, flat-blade
screwdriver to mark the location of the old printhead on the printer frame. Align the new printhead relative to the
location of the old printhead.
Note:
Skew is caused by a sheet being fed through the printer while misaligned. The entire image is rotated relative
to the sheet edges. However, a mechanically misaligned printhead causes the horizontal lines to appear skewed,
while the vertical lines remain parallel to the vertical edges. There are no adjustments for skew. Check the pick tires
for wear, the paper path for obstructions, the fuser for proper setting, and the tray paper guides for fit to the media.
Paper feed
skew
Printhead
misalignment
To adjust the printhead:
1
POR into the Diagnostics menu, and print a Quick test page:
Diagnostics Menu
>
Print Tests
>
Tray 1
>
Single
2
Fold the printed test page on the left side so that a few millimeters of grid lines wrap around the outside of the
fold.
3
Fold a second vertical fold near the center so that the left side top edge aligns with the right side top edge.
4514
Repair information
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Содержание M1140
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Страница 30: ... Spring hook Feeler gauges Analog or digital multimeter Flashlight optional 4514 General information 30 ...
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Страница 175: ...5 Remove the three screws B and then remove the left front mount B 4514 Repair information 175 ...
Страница 193: ...5 Remove the four screws B and then remove the right front mount B 4514 Repair information 193 ...
Страница 197: ...b Set the spring over the plunger 4514 Repair information 197 ...
Страница 204: ...3 Squeeze the latches B to release the left and right links B 4514 Repair information 204 ...
Страница 224: ...c Bring the cable in front of the two cable holders near the ACM shaft 4514 Repair information 224 ...
Страница 228: ...10 Remove the screw C and then detach the trailing edge sensor A 4514 Repair information 228 ...
Страница 229: ...11 Disconnect the two springs D 4514 Repair information 229 ...
Страница 231: ...15 Rotate and then remove the 2nd pickup bushing 16 Pull out the shaft and remove the ACM 4514 Repair information 231 ...
Страница 246: ...3 Swing the right cover backward to remove 4 Remove the screw D 4514 Repair information 246 ...
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Страница 255: ...Assembly 1 Covers 4514 Parts catalog 255 ...
Страница 257: ...Assembly 2 Electronics 1 4514 Parts catalog 257 ...
Страница 259: ...Assembly 3 Electronics 2 4 3 2 1 6 5 4514 Parts catalog 259 ...
Страница 261: ...4514 Parts catalog 261 ...
Страница 262: ...Assembly 4 Frame 4514 Parts catalog 262 ...
Страница 264: ...4514 Parts catalog 264 ...
Страница 265: ...Assembly 5 Option trays 3 4 5 6 1 2 4514 Parts catalog 265 ...
Страница 268: ...4514 Parts catalog 268 ...
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Страница 298: ...4514 Part number index 298 ...
Страница 302: ...4514 Part name index 302 ...
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