Disassembly; Introduction; Handling And Cleaning; Handling Pc Boards - Keithley 2701 Service Manual

In this section:

Introduction .............................................................................. 5-1

Handling and cleaning .............................................................. 5-1

Assembly drawings .................................................................. 5-3
Disassembly procedures .......................................................... 5-3
Instrument reassembly ............................................................. 5-6
Introduction
This section explains how to handle, clean, and disassemble the 2701 Ethernet Multimeter/Data
Acquisition System.
Use the Assembly drawings
disassembling and reassembling the instrument.
Handling and cleaning
To avoid contaminating PC board traces with body oil or other foreign matter, avoid touching the PC
board traces while you are repairing the instrument. Some circuit board areas, especially those under
the motherboard shield, have high-impedance devices or sensitive circuitry where contamination
could cause degraded performance.

Handling PC boards

Observe the following precautions when handling PC boards:
•
Wear cotton gloves.
•
Only handle PC boards by the edges and shields.
•
Do not touch any board traces or components not associated with repair.
•
Do not touch areas adjacent to electrical contacts.
•
Use dry nitrogen gas to clean dust from PC boards.
(on page 5-3) located at the end of this section to assist you when
Section 5

Disassembly