Xerox Phaser 8400 Service Manual page 305

3.
Insert the ribbon cable fully and squarely into the flex connector.
Caution
Ensure that the flex cable is inserted into the flex connector on the printhead
fully and squarely. If the cable is not inserted incorrectly, it can short out the
Wave Amp.
4.
Connect the data cable connector and heater harness connector.
Warning
The printhead heater cable not only needs to be routed through the cable
restraint, but also needs to be clear of the printhead to prevent interference
which would result in errors 7009 and 4025 fault codes.
Caution
Before reinstalling the printhead, move the wiper all the way down.
5.
Lower the printhead into its mounts. The printhead should be tilted forward in the
print position.
Caution
Be sure to remove any sheets of paper that you placed between the faceplate
of the printhead and the drum during disassembly.
6.
Route the air hose through the frame and connect it to the purge pump.
7.
Install the Roll Block on the left end of the printhead Shaft. The Roll Block must
be oriented as shown on the paper label on the left side of the printer frame.
8. Install the left and right printhead restraints. Be sure to tighten the screws to 6 in.
lb. to avoid stripping the chassis threads.
Caution
Ensure that the tilt spring on the left restraint is properly positioned in the
notch on the back of the printhead and does not pinch the air hose.
9. Set the X-Axis bias hook and spring on the end of the left printhead shaft. Ensure
that the point of the hook is centered in the shaft and the rest of the hook floats
freely.
10. After completing the installation, print the Light Stripes Page and check for jets
in service mode. If necessary, use the Control Panel to reset the jet substitution
mode.
Service Parts Disassembly 8-17