Front Panel Disassembly; Removing Power Components - Keithley 2701 Service Manual

Model 2701 Ethernet-Based DMM / Data Acquisition System Service Manual

Front panel disassembly

To remove the display board and the pushbutton switch pad:
You must first remove the case cover, the front/rear input switch, and the front input terminal wires.
See Case cover removal
(on page 5-4).
1. Unplug the display board ribbon cable from connector J1014.
2. Remove the four retaining clips that snap onto the chassis over four PEM
3. Pull the retaining clips on each side of the front panel outward and, at the same time, pull the
front panel assembly forward until it separates from the chassis.
4. Using a thin-bladed screwdriver, pry the plastic PC board stop (located at the bottom of the
display board) until the bar separates from the casing. Pull the display board from the front panel.
5. Pull the switch pad from the front panel.

Removing power components

The following procedures to remove the power transformer, power module, and fan require that the
case cover and motherboard be removed. See
Power transformer removal
To remove the power transformer:
1. Remove the motherboard.
2. Remove the two nuts that secure the transformer to the side of the chassis.
3. Pull the black ground wire off the threaded stud and remove the power transformer from the
chassis.
2701-902-01 Rev. B / December 2018
(on page 5-3), Motherboard removal
Disassembly procedures
Section 5: Disassembly
(on page 5-4), and Card cage removal
nut studs.
®
(on page 5-3).
5-5