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3488A-19
Caution:
The Agilent 3488A mainframe, as well as the plug-in option cards, are susceptible to static
discharges. Use the following anti-static procedures to prevent static damage
.
Static Handling
Static electricity is a familiar phenomenon which, except for an occasional shock,
doesn’t seem very serious. However, it has been proven that in the electronics industry electrostatics
discharge (ESD) is a major cause of component failure. In many cases, the component damaged may not
immediately fail, causing low instrument reliability and unnecessary repairs at a later time. ESD damage
can occur at static levels too low for human perception. Additionally, it has been shown that ESD can
affect both passive and active devices.
Caution
: The HP 3488A mainframe, the plug-in cards, and any assembly or subassembly removed
from the mainframe, must be handled in a static safe environment
.
The following guidelines are the minimum requirements for a static safe service environment.
-
The work bench should be equipped with a conductive table mat. The mat should be grounded to
earth ground through a 1 megohm resistor. The mat should be equipped with at least one swivel
connected to the swivel connector for connecting wrist straps.
-
All service and handling personnel should wear a conductive wrist strap in contact with bare skin.
This strap should be connected to the swivel connector on the conductive table mat through a 1
megohm resistor.
-
All metal equipment at a work station must be grounded. This includes soldering irons, solder
suckers, shelving, and equipment stands.
-
Only one common ground should be provided at a workstation.
-
The workstation must be kept free of nonconductors. No common plastics, polybags, cardboard,
cigarette or candy wrappers should be allowed. There should not be rugs or carpet on the floor,
shelving, or bench top.
-
Only proper containers should be used for shipping, storing and transporting assemblies.
HP 3488A Upgrade Procedures
The following steps show you how to upgrade an old 3488A mainframe:
STEP 1: Cover Removal
It is necessary to remove the top cover to access any of the major assemblies within the 3488A
mainframe. Six captive screws secure the cover. To remove the cover:
•
Remove all power cables, interconnections, and plug-in option cards from the 3488A.
•
Turn the 3488A upside down. Loosen the six screws in the bottom cover. The screws are
captive in the bottom cover. Do not attempt to completely remove the screws.
•
DO NOT ATTEMPT TO REMOVE THE BOTTOM COVER FIRST. When the screws are
loosened, turn the entire unit upright. The top cover can now be lifted off.
•
To reinstall the top cover, reverse the procedure.
STEP 2: Front Panel Removal
This procedure shows how to remove the front panel assembly from the mainframe.
•
Depress the line power switch to the ON position.
•
The front panel is now held captive in the slot in the bottom cover. Gently pry the right side of
the bottom cover until the keyboard can be released from the slot. The keyboard assembly will
then swing out and clear the line power switch knob.
•
Lift the front panel up and out. The cable that attaches the front panel to the Controller Board
has enough slack to allow the front to be removed. If it is desired to completely remove the front
