Keysight N5227A - Removing the Covers

7-6 Service Guide N5227-90001
Repair and Replacement Procedures PNA Series Microwave Network Analyzers
Removing the Covers N5227A
Removing the Covers
Tools Required
• T-10 TORX driver (torque to 9 in-lb or 1.02 N.m)
• T-20 TORX driver (torque to 21 in-lb or 2.38 N.m)
Refer to Figure 6-38, “External Hardware and Miscellaneous Parts, All Options,” for these procedures.
Removing the Outer Cover
CAUTION This procedure is best performed with the analyzer resting on its front handles in the vertical
position. Do not place the analyzer on its front panel without the handles. This will damage
the front panel assemblies.
1. Disconnect the power cord.
2. Remove the strap handles (item
④
) by loosening the screws (item
⑤
), with a T-20 TORX driver, on both
ends until the handle is free of the analyzer.
3. Remove the foot locks (item
⑥
) from the four bottom feet (item
⑦
) and then remove the four bottom
feet from the outer cover.
4. Remove the four rear panel feet (item
➁) by removing the center screws (item
③
) with a T-20 TORX
driver.
5. Slide the outer cover toward the rear of the analyzer and remove it.
Removing the Inner Cover
1. With a T-10 TORX driver, remove the pan head screws (item
⑧
).
2. With a T-10 TORX driver, remove the flat head screws (item
⑩
).
3. Lift off the cover (item
➈).
Replacement Procedure
1. On the top side of the PNA, carefully position the grey flex cables so they can’t be pinched between the
covers and the rails.
2. On the bottom side of the PNA, carefully fold or push down the ribbon cables and wires so they can’t be
pinched between the hardware and the outer cover. Ribbon cables and wires must never be positioned
on top of hardware.
3. Reverse the order of the removal procedures above.