Assembly Replacement
A21 Rear-Panel Interface
2-44
A21 Rear-Panel Interface
Tools Required
• T-10 driver
• 9/16” hex-nut driver
• 5.0 mm hex-nut driver
• 7.0 mm hex-nut driver
• needle-nose pliers
Removal Procedure
Refer to Figure 2-21 for this procedure.
1. Disconnect the power cord.
2. Remove the covers from the signal generator. Refer to "Outer Instrument Cover" on page 2-4 and
"Inner Instrument Cover" on page 2-6.
3. Remove the rear panel. Refer to "Rear Panel" on page 2-40.
4. Using the 9/16” hex-nut driver, remove the nuts and washers securing the four BNC connectors (1) at the base of the rear
panel.
5. Using the 5.0 mm hex-nut driver, remove the screws (2) from the RS-232 port.
6. Using the 7.0 mm hex-nut driver, remove the screws (3) from the GPIB port.
7. Using the T-10 driver, remove the two screws (4) from the bottom of the A21 Rear-Panel Interface.
8. Disconnect the B1 Fan cable (6) from A21P6.
Replacement Procedure
• Reverse the order of the removal procedure.
• Torque all T-10 screws to 9 in-lbs.
• Torque all hex-nuts to 9 in-lbs.
• Torque all BNC nuts to 21 in-lbs.
• Perform the post-repair adjustments and performance tests that pertain to this removal procedure.
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