TruSat Technical Reference Manual4–149. Install the power button pad at S1 on the Display board by inserting the two guide“posts” through the matching holes on the Display board.10. Slide the boards all the way into the housing, taking care not to dislodge the AlarmSilence button, the power button, and the power button pad.Left side assembly1. Position the SpO 2 code ring inside the left bumper and cover it with the left inner endplate.2. Position the bumper and end plate over the left side of the housing, fitting it over theSpO 2 connector and RS-232 connector, as applicable.3. Place the outer end plate over the bumper and install the 3 screws that secure theleft bumper assembly to the housing.Right side assembly1. Position the speaker over the two posts inside the right bumper with the speakercable near the center of the bumper.2. Slip the spacer over the ComWheel encoder post and insert the encoder postthrough the hole in the right inner end plate. Be sure the end plate standoffs and theencoder post face away from the housing.3. Orient the encoder with its cable toward the center of the end plate and install thewasher and nut that secure the encoder to the end plate. Install the ComWheelencoder nut, using a 7/16 inch nut driver.4. Position the right inner end plate in the right bumper, routing the speaker cablethrough the large hole in the inner end plate. On the outside of the bumper, align theComWheel over the flat side of the encoder post, then press gently until theComWheel slides into place.5. Connect the speaker cable and the ComWheel encoder cable to the System board.Position the cables inside the housing to ensure they will not be pinched.6. Place the right bumper over the housing. Place the outer end plate over the bumperand install the 3 screws that secure the bumper assembly to the housing.Important: Test the monitor. See Functional check earlier in this chapter.