Welch Allyn SureTemp 670 - Page 4

Welch Allyn, Inc.
ii SureTemp
®
Model 670/SureTemp 4
®
Model 675
Temperature Measurement and Display..........................................................................................16
Battery Voltage Reading..................................................................................................................17
A/D Power Control...........................................................................................................................17
Probe Detection...............................................................................................................................17
Probe Warming (675 Oral probes only) ...........................................................................................18
EEPROM.........................................................................................................................................19
Liquid Crystal Display ......................................................................................................................19
Backlight/Temperature Recall..........................................................................................................20
Horn.................................................................................................................................................20
F/C Switching ..................................................................................................................................20
Timer...............................................................................................................................................20
ERROR CODES.................................................................................................................................21
Error Code Table.............................................................................................................................21
TROUBLESHOOTING........................................................................................................................22
Equipment Required........................................................................................................................22
Terminology.....................................................................................................................................23
Troubleshooting Table.....................................................................................................................24
FIELD SERVICEABLE REPAIRS .......................................................................................................30
FACTORY SERVICEABLE ONLY REPAIRS......................................................................................30
FIELD SERVICEABLE PARTS ...........................................................................................................30
THERMOMETER DISASSEMBLY......................................................................................................31
THERMOMETER REASSEMBLY.......................................................................................................38
SUGGESTED SPARE PARTS LIST...................................................................................................39
OPTIONS AND ACCESSORIES.........................................................................................................39
TABLE OF FIGURES
FIGURE 1 - THERMOMETER DIAGRAM.............................................................................................4
FIGURE 2 - THERMOMETER DISPLAY ..............................................................................................5
FIGURE 3 - SYSTEM BLOCK DIAGRAM...........................................................................................14
FIGURE 4 - THERMOMETER ASSEMBLY DRAWING ......................................................................32
FIGURE 5 - SYSTEM SCHEMATIC....................................................................................................34
FIGURE 6 - MAIN PCA.......................................................................................................................36
FIGURE 7 - ELECTRONICS ASSEMBLY...........................................................................................37