Fan And Power Circuit Board Disassembly; Thermometry Circuit Board Disassembly; Suretemp Plus - Welch Allyn Spot Vital Signs LXi Service Manual

Service Manual

Fan and Power Circuit Board Disassembly

Note
This is a small board held in place with two-sided tape and one connector. Remove the
screw before disconnecting the connector.

Thermometry Circuit Board Disassembly

SureTemp Plus

1. Remove the two screws located at the thermometer housing with a T-10 torx wrench.
Save the fish paper.
2. Locate the path of the notched tabs on the housing. Slide the housing up and out
following this path and set the case aside.
To prevent buildup of hydrogen gas, replace the fan using only the Welch Allyn
specified part.
Caution To assure patient electrical isolation, trap the flex cable to the
thermometer pod behind the clip on the main housing adjacent to the main board
connection point.
Caution To assure patient electrical isolation, verify that the correct flex cable is
used to connect the thermometer pod to the main board. The Braun and
SureTemp Plus flex cables are slightly different in length and are not
interchangeable.
Caution To protect the user from high voltage, properly install the thermometer
pod insulating paper separating the LCD ballast wires from the housing crack.
Caution Do not attempt to repair or clean the solder joints on either SureTemp
Plus board. Incorrect flux or technique can degrade thermomter accuracy.
Disassembly and Repair 57