PHM/PM User Guide
4-2
Performing Internal Maintenance
The only internal maintenance necessary is replacing the fuse. To prevent
injury to yourself and/or damage to the monitor, be sure to read and
understand the procedures in this section before performing them.
This section discusses the following:
•
Electrostatic Discharge Precautions
•
Opening and closing the backshell
•
Replacing a fuse
Electrostatic Discharge (ESD) Precautions
Modern integrated electronic devices, including the monitor, are extremely
sensitive to electrostatic discharges (ESD) and fields. Before you open the
system, be sure to follow these simple precautions to protect you and the
monitor from harm resulting from ESD.
•
Always disconnect power from the monitor before opening or removing
the backshell. Do not touch any components of the monitor while the
monitor is on.
•
Disconnect power before performing any internal maintenance or
troubleshooting.
•
Only handle internal components of the monitor in an ESD-safe
location, using appropriate grounding methods.
•
Wear a grounding wrist strap for continuous protection.
•
Always ground yourself to remove any static charge before you touch
the video controller board inside the monitor’s backshell.
•
Be particularly careful not to touch the components on the video
controller board.
•
Keep any monitor part in its anti-static packaging when it is not
installed in the monitor and place it on a static dissipative mat when
you are working on it.
Opening and Closing the Backshell
In order to perform internal maintenance on the monitor, you have to open
and close the backshell of the unit. For safety reasons, the monitor
should be opened only by qualified service personnel.
