34410A/11A Display And Keypad Tests; Electrostatic Discharge (Esd) Precautions - Agilent Technologies 34410A Service Manual

4 Disassembly and Repair

34410A/11A Display and Keypad Tests

You can test the keypad and display.
Hold down the
for a little over 5 seconds, until you hear a relay click. When you release
the
line shows the names of the keys. Press each key in turn, as shown. When
all the keys have been pressed, the display test is available. press the left
or right arrow keys (
segments and annunciators. Press

Electrostatic Discharge (ESD) Precautions

Electrical components can be damaged by electrostatic discharge (ESD)
during handling. Component damage can occur at electrostatic discharge
voltages as low as 50 volts.
The following guidelines will help prevent ESD damage when servicing the
instrument or any electronic device.
• Disassemble instruments only in a static–free work area.
• Use a conductive work area to reduce static charges.
• Use a conductive wrist strap to reduce static charge accumulation.
• Minimize handling.
• Keep replacement parts in original static–free packaging.
• Remove all plastic, foam, vinyl, paper, and other static–generating
• Use only anti–static solder suckers.
110
key as you turn on the instrument. Hold the
key, the instrument begins the keypad test. The second display
materials from the immediate work area.
or ) to cycle the display through all the
when finished.
34410A/11A/L4411A Service Guide
key