2. Place the instrument face down on a soft surface or fixture. Place the instrument face down carefully to prevent damage to the knobs.
CAUTION: Place the instrument face down carefully to prevent damage to the knobs.
3. Carefully slide the rear chassis off of the front chassis.
4. To reinstall, reverse the steps. Align the rear chassis assembly with the front chassis, slide in, and use a screwdriver with T-10 Torx tip
to install the 16 screws securing the rear chassis to the front chassis. Tighten to 0.65 N·m.
Remove the main fan assembly
Use this procedure to remove and replace the main fan from the rear chassis.
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 rear chassis assembly
Steps:
1. Use a T-10 Torx screwdriver to remove the four screws from the main fan assembly.
Maintenance
3 Series MDO Mixed Domain Oscilloscope Service Manual 12
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