Keithley 9139B-PCA Instructions Manual

Keithley 9139B-PCA Instructions Manual Manual pdf 33 page image

Section 4: Maintenance Model 9139B Probe Card Adapter Instructions4-2 9139B-901-01 Rev. A / January 2019Mechanical disassemblyDisassembly of the probe card adapter is required when replacing device under test (DUT) cables orwhen motherboard maintenance is required.When reassembling the probe card adapter, use VAC Goop ® (from Swagelok ® ) to lubricate allO-rings.Hazardous voltages may be present on an installed probe card even after the output isdisconnected, that if contacted, may cause personal injury or death.Never attempt to touch or change a probe card when tests are running. You must beabsolutely certain that all tests have stopped before making contact with anything in thevicinity of the probe card adapter. Also, never run tests without a probe card installed.If time and space are available, it is possible to disassemble the probe card adapter withoutdisconnecting the system cables.To disassemble the probe card adapter:1. Place the PCA in a safe state by resetting the test equipment.2. Turn the vacuum control box valve to the unload position.3. Disconnect the vacuum hose from the probe card adapter.4. Disconnect the PCA cables from your system.5. Disconnect the interlock cable from the probe card adapter.6. Remove the probe card adapter assembly from your prober.7. Remove the light cover assembly.8. Remove the Allen screws that secure the cable strain relief for the cable being replacedor moved.9. Release the probe card retainer cap latches.10. Carefully remove the probe card and retainer cap from the probe card adapter