Welch Allyn SureTemp 767 - Page 6

Welch Allyn Model 767
Basic Function ............................................................................................................................17
Circuit Operation.........................................................................................................................17
Reset/Self Tests ............................................................................................................................18
Power Supply ................................................................................................................................18
Other Components ........................................................................................................................18
Microcontroller ............................................................................................................................18
Microprocessor Clock .................................................................................................................18
Liquid Crystal Display .................................................................................................................19
Backlight (Optional) ....................................................................................................................19
Horn ……………………………………………………………………………………………………….19
Probe Switch...............................................................................................................................19
Serial Communications Port........................................................................................................19
Mode Button ...............................................................................................................................19
Thermometer Modes (Theory of Operation)........................................................................................20
Monitor Mode.................................................................................................................................20
Normal Mode.................................................................................................................................20
TROUBLESHOOTING........................................................................................................................21
Error Codes ...................................................................................................................................21
Error Codes Table .........................................................................................................................21
Equipment Required......................................................................................................................22
Terminology...................................................................................................................................22
Troubleshooting Table...................................................................................................................23
FIELD SERVICEABLE REPAIRS........................................................................................................27
FIELD SERVICEABLE PARTS ...........................................................................................................28
Model 767 Enhanced Replacement Parts......................................................................................28
Replacement Parts-Circuit Board Assemblies ...............................................................................29
THERMOMETER DISASSEMBLY ......................................................................................................31
THERMOMETER REASSEMBLY .......................................................................................................35
ACCESSORIES ..................................................................................................................................36