490
Assembly Replacement Procedures
Reference Assembly
5. For instruments with Option B40, MPB, or DP2 but without Option B85,
B1A, or B1X, refer to Figure 14-43. Remove cables W5, W6, W14, W19,
W20, W42, W50, and W25 (Option BBA only) from the reference assembly
(1). Use the 5/16 inch wrench where necessary.
Figure 14-43 Reference Board Cables - Serial Prefix > MY/SG/US5233 with Option B40,
MPB, or DP2 and without Option B85, B1A, or B1X
6. For instruments with Option B85, B1A, or B1X, refer to Figure 14-44.
Remove cables W5, W6, W14, W19, W20, W23, W25 (Option BBA only),
W51, W54, and W56 from the reference assembly (1). Use the 5/16 inch
wrench where necessary.
Figure 14-44 Reference Board Cables - Serial Prefix > MY/SG/US5233 with Option B85,
B1A, B1X
7. Refer to Figure 14-45. Remove the reference support bracket (2) by
removing the pan-head screw (3) (0515-0372) securing the bracket to the
Reference assembly (1).Figure 14-43.
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