6-19 Replacing GPS Receiver Module (Option 31) – ND70320 Assembly Removal and Replacement,
6-40 PN: 10580-00307 Rev. D MS20xxC MM
Installing Case Bottom Assembly and Battery:
25. Replace the Case Bottom Assembly, making sure that the top connector panel is correctly centered in its
mounting groove in the case back and that all cables are clear. Insert and tighten the four case mounting
screws. Torque these screws to 7.5 lbf·in (0.85 N·m).
Installing Battery:
Refer to Section 5-4 “Battery Pack Removal and Replacement” on page 5-3.
26. Install the Battery.
27. Install the Battery Door.
Restarting the Instrument:
28. Restart the instrument.
29. Perform a function check to verify all repairs and part replacements.
Caution
All cables along the lower edge of the Mother Board and VNA PCB Assembly must be routed in such
a manner that they will not be pinched between, or protrude between, the case halves of the upper
battery compartment. If any cable protrudes into the battery compartment when the case is closed,
then the cable may be damaged by pinching, or by the battery when it is inserted, or it may prevent
battery insertion.
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