Maintenance ECA 45064 Instruction 0024-94004.4 Sensor ReplacementThe following sections described in detail how to replace the various sensorslocated in the analyzer’s sensor compartment. Refer to Figure 4-3 for thelocation and positioning of those sensors.Note: When a sensor-error message appears at the bottom of the screen (referto Section “5.2 Problem Messages Displayed After Warm-Up”), it does notnecessarily mean that the sensor has become depleted or is defective. Beforereplacing a sensor, refer to Section “5.4 Troubleshooting Guide” for otherpossible causes of the error.Caution: Static damage. When handling any printed circuit board, be sure tofollow all established industry procedures for the prevention of static buildupthat when discharged may damage electrical components on the board.Figure 4-3. Sensor CompartmentSENSOR COVERCOVER SCREW(2 PLACES)O 2 SENSOR& PCBNO SENSOR,PCB & LITHIUMBATTERYNO 2 SENSOR& PCBCO-Hi SENSOR& PCBHC SENSOR& PCBSO2 SENSOR& PCBCO-Lo SENSOR& PCBCO-LoCO-HiO2NOHCSO2NO2PCB CONNECTORJACKSNOTE: FOR CLARITY, THE WIRES BETWEEN THESENSOR PRINTED CIRCUIT BOARDSAND THEIR ASSOCIATED CONNECTORJACKS ARE NOT SHOWN.OptionalOPTIONAL(Sensor Blankw/ O-Ring shown)
