6. Lift the front edge of the carrier interface assembly tray to clear the two shallow screw posts from the last step, then pull
away from the chassis. There will be a slight resistance due to the springs on the rear of the chassis for the I/O
connectors.
7. T
o reinstall, reverse the steps. Tighten all T-10 Torx screws to 0.65 N·m when reinstalling. Tighten all T-8 Torx screws to
0.45 N·m when reinstalling. Tighten the jack screws to 0.45 N·m when reinstalling. Reconnect the main fan cables and
the power supply cables.
Remove the AFG riser assembly
Use this procedure to remove and replace the AFG riser assembly from the carrier interface assembly. Only use this
procedure as part of the sanitize process before sending the instrument for repairs at a Tektronix Service Center.
Before you begin
Prerequisites:
• To prevent electrostatic damage to components whenever you work on the instrument, wear properly-grounded
electrostatic prevention wrist and foot straps, and work in a tested antistatic environment on an antistatic mat.
• Remove carrier interface assembly on page 14. The carrier interface assembly must be removed from the rear chassis
before removing the AFG riser assembly. There is not enough clearance for the BNC and video connectors to remove
the assembly while it is installed in the chassis.
About this task
Steps:
Procedure
1. Use a T-10 Torx screwdriver to remove the one screw on the AFG riser assembly bracket.
2. Lift the AFG riser assembly straight up from the carrier interface assembly.
3. To reinstall, reverse the steps. Tighten the T-10 Torx screw to 0.65 N·m when reinstalling.
Maintenance
6 Series B MSO MSO64B, MSO66B, MSO68B Service 17
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