14 ArcGlide THC Replacement Parts Field Service Bulletin 806560
2 – Replacing ArcGlide parts
228577 – THC control interface board
Follow the steps in Accessing control module parts on page 12 to
open the rear panel of the control module. Set aside all screws
a
nd other hardware for reuse.
To access the THC control interface board, you must use the
following procedur
es to remove additional parts:
428081 – Servo amplifier module on page 36
228578 – THC processor board on page 15
To remove the THC control interface board:
1. On th
e outside of the front panel, remove the screws from
around each black circular connector.
2. Remove the screw from the center bottom of the board.
3. Snap the board off the upper standoffs.
4. Lift the board off the standoffs and let the cables slip through the cutout in the board.
To replace the THC control interface board:
1. T
hread the ribbon cables through the cutout.
2. Align the circular connectors through the front of the front panel.
3. Snap the board onto the standoffs.
4. Fasten the screw through the standoff in the center bottom of the board. Tighten the screw to 1.13 N·m (10 lb·in.).
5. Fasten the screws around the circular connectors on the front panel. Tighten the screws to 0.67 N·m (6 lb·in.).
Use the following procedures to repl
ace additional parts:
228578 – THC processor board on page 15
428081 – Servo amplifier module on page 36
THC control interface
board
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