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4. Repair Information
WARNING: Read the following before handling electronic parts.
Handling ESD-Sensitive Parts
Many electronic products use parts that are known to be sensitive to electrostatic
discharge (ESD). To prevent damage to ESD-sensitive parts, follow the instructions below
in addition to all the usual precautions, such as turning off power before removing logic
boards:
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Printhead Adjustments
Whenever a printhead is removed, it is necessary to perform the
Adjustment" on page 4-1
Printhead Manual Adjustment
1.
Note: When you adjust or replace the printhead, tighten the three mounting screws
friction tight so the printhead does not wobble but can be adjusted left and right.
5060-XXX
Keep the ESD-sensitive part in its original shipping container (a special "ESD bag")
until you are ready to install the part into the machine.
Make the least-possible movements with your body to prevent an increase of static
electricity from clothing fibers, carpets, and furniture.
Put the ESD wrist strap on your wrist. Connect the wrist band to the system ground
point. This discharges any static electricity in your body to the machine.
Hold the ESD-sensitive part by its edge connector shroud (cover); do not touch its
pins. If you are removing a pluggable module, use the correct tool.
Do not place the ESD-sensitive part on the machine cover or on a metal table; if you
need to put down the ESD-sensitive part for any reason, first put it into its special
bag.
Machine covers and metal tables are electrical grounds. They increase the risk of
damage because they make a discharge path from your body through the ESD-
sensitive part. (Large metal objects can be discharge paths without being
grounded.)
Prevent ESD-sensitive parts from being accidentally touched by other personnel.
Install machine covers when you are not working on the machine, and do not put
unprotected ESD-sensitive parts on a table.
If possible, keep all ESD-sensitive parts in a grounded metal cabinet (case).
Be extra careful in working with ESD-sensitive parts when cold-weather heating is
used because low humidity increases static electricity.
and
Draw a scribe line on the frame next to the front (A) and rear (B) of the printhead to
provide reference points before adjusting or removing a printhead.
"Printhead Electronic Alignment" on page
"Printhead Manual
4-4.
4-1
Repair Information
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