Disassembly 15-3
Static sensitive devices
CMOS devices operate at very high impedance levels. Therefore, any static that builds up on
you or your clothing may be sufficient to destroy these devices if they are not handled properly.
Use the following precautions to avoid damaging them:
CAUTION
Many CMOS devices are installed in the Model 2306. Handle all semiconductor
devices as being static sensitive.
•
Transport and handle ICs only in containers specially designed to prevent static build-up.
Typically, you will receive these parts in anti-static containers made of plastic or foam.
Keep these devices in their original containers until ready for installation.
•
Remove the devices from their protective containers only at a properly grounded work
station. Ground yourself with a suitable wrist strap.
•
Handle the devices only by the body; do not touch the pins.
•
Ground any printed circuit board into which a semiconductor device is to be inserted to
the bench or table.
•
Use only anti-static type desoldering tools.
•
Use only grounded-tip solder irons.
•
Once the device is installed in the PC board, it is normally adequately protected, and you
can handle the boards normally.
Assembly drawings
Use the assembly drawings located at the end of this section to assist you as you disassemble
and reassemble the Model 2306. Refer to these drawings for information about the Keithley part
numbers of most mechanical parts in the unit.
Assembly drawings include:
•
Front panel assembly — 2306-040
•
Chassis assembly — 2306-050
•
Analog board to chassis assembly — 2306-051
•
Final chassis assembly — 2306-052
Test Equipment Depot - 800.517.8431 - 99 Washington Street Melrose, MA 02176
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