Keysight Technologies N5222B, Service Manual

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7-20 Keysight N5290/1A Service Guide
Repair and Replacement Procedures
Removing and Replacing the A5 Test-Set Motherboard
7-
Removing and Replacing the A5 Test-Set Motherboard
Tools Required
— T-10 TORX driver (set to 9 in-lb)
— T-20 TORX driver (set to 21 in-lb)
— 5/16 inch open-end torque wrench (set to 10 in-lb)
— Soft tool – similar to T-387026 (to remove motherboard from chassis)
— 5/8 inch nutsetter (set to 21 in-lb)
— ESD grounding wrist strap
Removal Procedure
Refer to Figure 7-12 on page 7-21 , Figure 7-13 on page 7-22 , and Figure 7-14
on page 7-23 .
1. Disconnect the power cord.
2. Remove the outer cover. Refer to “Removing the Cover” on page 7-8 .
3. Remove the rear panel. Refer to “Removing and Replacing the Rear Panel”
on page 7-26 .
4. Remove the screws 0515-0372 (x16). (i.e., older units have (x15) screws.)
5. Remove all of the cables connected to the test set motherboard. Note
positions and label for reuse.
6. Carefully lift the test set motherboard at connector J11.
7. Remove the test set motherboard.