General Information; About The Model 986; System Block Diagram; Technical Support - Welch Allyn SureTemp 986 Service Manual

1. General Information

1.1

About the Model 986

1.1.1 System Block Diagram

Model 986 PCA
1.2

Technical Support

Model 986 Thermometer
The Welch Allyn Model 986 SureTemp is a portable, predictive
thermometer that accurately measures body temperatures in a
few seconds at oral, axillary, or rectal sites. Oral/axillary and rectal
probes utilize single use disposable probe covers to help limit
cross-contamination.
This instrument was developed for use by medical professionals
and day care providers. The predictive technology allows the user
to take oral temperatures in approximately four seconds, axillary
temperatures in approximately 10 seconds (for children under four
years), and rectal temperatures in approximately 15 seconds.
NEC UPD 789407 uP
A/D Converter 16 Bit
Circuit Timer
Voltage
8 Bit
Reference Circuit
A/D
Battery Detector
Circuit
Probe Warmer
Circuit
Four Conductor
Coil Cord
Thermistor
Probe Assembly

Figure 1: System Block Diagram

Contact Welch Allyn Customer Service at:
Welch Allyn, Inc
7420 Carroll Road
San Diego, CA 92121
CPU
LCD
Driver
Probe
Liquid Crystal
Configuration
Display
Jumpers
Probe
Warmer
800-535-6663
Configuration
Serial Serial
I/O Port
Mode
Horn
Button
Driver
Horn
2 AAA
Batteries
1