487
Assembly Replacement Procedures
Reference Assembly
Reference Assembly
Removal
(Serial Prefix < MY/SG/US5233
without Option B85, B1A, or B1X)
1. Remove the instrument outer case. Refer to the Instrument Outer
Caseremoval procedure.
2. Remove the reference bracket. Refer to the Top Brace and Reference
Bracket removal procedure.
3. Remove the rear panel. Refer to the Rear Panelremoval procedure.
4. For standard instruments, refer to Figure 14-40. Remove cables W5, W6,
W12, W14, W19, W20, W23, and W25 (Option BBA only) from the
reference assembly (1). Use the 5/16 inch wrench where necessary.
Figure 14-40 Reference Board Cables - Serial Prefix < MY/SG/US5233
without Option B40, MPB, or DP2
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