Pagewriters With Serial Number Prefix 3208A Or Later; The Printhead Assembly - HP PageWriter XL M1705B Service Manual

To remove the top cover assembly, continue as follows:
6. If the cardiograph is equipped with a preview display, remove the
screw that secures the cable shield wire to the preview logic RF1
shield. Disconnect the cable that connects the preview screen to
the preview logic board.
7. Disconnect the four cables that connect the top cover assembly to
the CPU assembly.
8. Lift the top cover assembly free of the lower chassis and set it
aside.
Reinstalling the Top
To reinstall the top cover assembly, reverse the appropriate removal
Cover Assembly
procedure.
The Printhead
Assembly
This section describes how to remove and replace the printhead
assembly.
Removing the Printhead
The procedure you will use depends on the serial number prefix of
Assembly
the unit you are servicing. Make sure you use the correct procedure
for your particular PageWriter.
-,
PageWriters with Serial Number Prefix 3208A or Later
If the PageWriter has a serial number prefix of 3208A or later, use
this procedure to remove the printhead assembly.
Caution
8
Use an electrostatic wrist band or other approved method for
protection against electrostatic discharge when disconnecting and
handling the printhead assembly.
To remove the printhead:
1. Remove the printer door:
a. Release the latch and pull the door out to the first stop.
b. Compress and remove the plastic retainer clip at the end of the
rear plastic rail.
c. Slide the door out of the rails and set it aside.
2. Remove the user interface assembly as described previously in this
chapter.
3. Open the top cover as described previously in this chapter.
4. Remove the printhead cover as shown in Figure 7-15.
7-20 Removal and Replacement