228 Chapter 6
Replacement Procedure
Analog Motherboard Replacement (A50)
Analog Motherboard Replacement (A50)
Tools Required
• TORX screwdriver, T10, T15, and T20
• Flat edge screwdriver
• Open-end wrench, 5/8 inch
• Open-end torque wrench, 5/16 inch or 8mm (set to 1.08 N-m / 9.5 lb-in) (for
reconnecting SMA connector)
• Torque driver set, 5/16 inch (set to 1.08 N-m / 9.5 lb-in) (for reconnecting SMA
connector)
Removal Procedure
Refer to Figure 6-33 for this procedure.
Step 1. Remove the outer cover as described in “Outer Cover Removal” on page 167.
Step 2. Remove the following assemblies.
• Front Panel Assembly (refer to “Front Panel Removal” on page 168.)
• Removable Hard Disk Assembly (refer to “Removable Hard Disk Assembly Removal
(Obsolete)” on page 169.)
• Level Vernier Module (refer to “Level Vernier Module Replacement (A3)” on
page 199.)
• Synthesizer Module (refer to “Synthesizer Module Replacement (A1)” on page 203.)
• Receiver Module (refer to “Receiver Module Replacement for 2-Port model
(A2/A7+A9)” on page 205 or “Receiver Module Replacement for 4-Port model
(A82/A87)” on page 210.)
Step 3. Remove the two TORX T10 screws (item 3) fastening the plate and remove it.
Step 4. Disconnect the flat cables connected to the analog motherboard (item 1, 2).
Step 5. Remove the six TORX T10 screws (item 4) fastening the rear cover.
Step 6. Disconnect the cable (item 5) connected to the analog motherboard when with option 1E5.
Step 7. Disconnect the cables (item 6, 7) connected to the analog motherboard.
Step 8. Remove the ten TORX T10 screws (item 8) fastening the analog mother board.
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