210 Chapter 4
Assembly Replacement
Rear Frame
Rear Frame
CAUTION Use ESD precautions when performing this replacement procedure.
Removal
1. Remove the instrument top brace. Refer to the “Top Brace” removal
procedure.
2. Remove the A17, A18, and A19 assemblies. Refer to the “A17 RF,
A18 Reference, and A19 Synthesizer Assemblies” removal
procedure.
3. Remove the A10 and the A12 assemblies. Refer to the “A10 Digital
IF and A12 Analog IF Assemblies” removal procedure.
4. Remove the A7 assembly (if installed). Refer to the “A7 Baseband I/Q
Assembly (Option B7C)” removal procedure.
5. Remove the A25 SCSI board. Refer to the “A25 SCSI Board”
removal procedure.
6. Remove the A22 processor assembly. Refer to the “A22 Processor
Assembly” removal procedure.
7. Detach the flat flex cable from the daughter board.
8. Remove the rear dress panel, which includes the rear panel
connector board and the External Trigger Input cable. Using the
T-10 driver, remove the 13 screws marked with (2) as shown in
Figure 4-26 on page 208.
9. Refer to Figure 4-27. Using a T-10 driver, remove the 11 screws (1)
that secure the rear frame to the deck. Remove the rear frame from
the deck.
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