Introduction

Use this guide to remove or replace a vital signs module from a Connex monitor.

This guide shows to procedure to remove a module from a standard chassis. The procedure can be repeated to remove the second module from the standard chassis, and the third module from an extended chassis.

PLEASE NOTE: This repair guide was developed by the iFixit team based on Welch Allyn's own service manual. Neither iFixit nor this repair guide is endorsed by or affiliated with Welch Allyn.

  1. Unplug the AC power connection cable.
    • Unplug the AC power connection cable.

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  2. Place your thumb and forefinger on the blood pressure (NIBP) hose connector. Squeeze the side tabs until the connector releases.
    • Place your thumb and forefinger on the blood pressure (NIBP) hose connector. Squeeze the side tabs until the connector releases.

      • Always grasp the hose by the connector. Do not pull on the hose itself.

    • Pull the connector away from the connector port.

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    • Place your thumb and forefinger on the Pulse oximetry (SpO2 or combined SpO2/SpHb) cable connector. Squeeze the side tabs until the connector releases.

      • Always grasp the cable by the connector. Do not pull on the cable itself.

    • Pull the connector away from the connector port.

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    • Grasp the temperature probe and pull it up to remove it from the monitor.

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    • Remove the cover of the temperature module by pressing the tab and sliding the cover to the right.

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    • Depress the spring tab on the temperature probe cable connector and withdraw it from the probe port.

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    • Remove the flathead screw on the USB networking door.

    • Loosen the captive Phillips #2 screw securing the monitor to the stand.

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    • Holding the monitor securely, open the USB networking door.

      • You may have to lift the monitor slightly to allow the door to swing out from the stand mount.

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    • Detach any accessory USB cables from USB ports on the monitor.

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    • Slide the monitor off of the stand tray.

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    • Place the monitor upside down on a clean surface.

    • Insert a coin into the slot and push to open.

      • Choose a coin that fits comfortably into the slot.

    • Remove the battery cover.

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    • Use the plastic label to remove the battery from its recess.

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    • Open the communications door to access the lower left-hand rear housing screw.

    • Remove the four Phillips #2 screws (labeled 14 in the service manual) from the rear housing.

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    • With the handle/alert bar facing you, begin to lift the rear housing from the left side, holding the right side securely.

    • Do not attempt to separate the rear housing from the monitor, it is still attached with several cables.

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    • Support the rear housing while you disconnect the cables in the following steps.

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    • Disconnect the fan cable (labeled connector A in the service manual) from its socket in the power supply.

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    • Unplug the small USB connector from its socket (labeled J4 in the service manual).

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    • Disconnect the communications power cable from its socket (labeled J50 in the service manual).

    • Only pull on the connector itself and not the socket. This connection is very tight, work the connector slowly and gently.

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    • Unplug the large USB connector from its socket (labeled J8 in the service manual).

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    • Press the tab on the ethernet cable and unplug it from its socket (labeled J9 in the service manual).

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    • The following connector requires two hands to disconnect. Flip the rear case over, and lay it on its back to gain access to the power supply cable.

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    • The power supply cable is secured by an interlocking connector that must be held open to unplug the connector.

    • Insert the flat end of a spudger down into the power supply cover between the socket clip and the power supply connector.

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    • Grasp the power supply cable firmly and lift both it and the spudger from the channel in the power supply housing to unplug the connector.

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    • Disconnect the USB cable from the module.

      • For the extended chassis: Disconnect the two USB cables from the module.

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    • Remove the USB cable from the retaining clip on the module.

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    • Slide the module out of the case.

    • Repeat the above procedure to remove any additional modules from the chassis.

    • During reassembly, install the module closest to the display first.

    • Reinsert modules into the housing with the serial number label facing up.

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Conclusion

To reassemble your device, follow these instructions in reverse order.

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Sam Lionheart

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