User Manuals: Welch Allyn SureTemp 986 Thermometer

User Manuals: Welch Allyn SureTemp 986 Thermometer

Manuals and User Guides for Welch Allyn SureTemp 986 Thermometer. We have 2 Welch Allyn SureTemp 986 Thermometer manuals available for free PDF download: Service Manual, Operating Instructions Manual

Welch Allyn SureTemp 986 Service Manual

Welch Allyn SureTemp 986 Service Manual (50 pages)

Brand: Welch Allyn | Category: Thermometer | Size: 0 MB

Table of Contents

Table of Contents
3
General Information
7
About the Model 986
7
System Block Diagram
7
Technical Support
7
Figure 1: System Block Diagram
7
Safety Warnings and Notices
8
Classifications
8
About this Manual
9
Related Documents
9
Return Procedure
9
Terms Used in this Manual
10
Service
11
Basic Operation of the Model 986
11
Types of Units
11
Figure 2: Model 986 Thermometer
11
Major Thermometer Components
12
Instrument Reset
12
POST (Power up Self-Test)
13
Probe Type Test
13
Figure 3: M986 Display
13
Operational Checks
14
Figure 4: Peak Monitor Mode
15
Default Algorithm for Oral and Axillary Modes (Blue Probe)
17
Service Procedures
17
List of Tools and Equipment
17
Preventative Maintenance
18
Cleaning and Sterilization
19
Service Activities
20
Component Replacement
20
Battery Removal and Replacement
21
Battery Life
21
Figure 5: Battery Removal and Replacement
21
Calibration Procedures
22
Calibration Limits Table
22
Water Bath Procedure
22
Variable Temperature Water Bath Procedure
22
Model 9600 Calibration Procedure
23
Troubleshooting
25
Error Codes
25
Types of Errors
26
Table 1: Self-Test Error Table
26
Error Recall Mode
27
Troubleshooting Table
28
Disassembly/Reassembly
30
Field Serviceable Parts
30
Main Components
30
Figure 6: Thermometer Assembly
30
Table 2: Main Components
31
Model 986 PCA
32
Figure 7: Printed Circuit Assembly
32
Replacement Parts for PCA
33
Table 3: Replacement Parts for PCA
33
Appendix A. Theory of Operation
35
Overview
35
Figure 8: System Block Diagram
35
Temperature Probes
36
Probe Switch
36
Normal Mode Description
36
Power Supply
37
Microcontroller
37
Reset/Self Tests
37
Microprocessor Clock
38
Temperature Measurement and Display
38
Temperature Measurement A/D Converter
38
Use of Analog Circuitry
38
A/D Theory of Operation
38
Circuit Description
39
Probe Type Detection
40
Instrument ID Logic
40
Circuit Operation
40
Table 4: Configuration Truth Table
40
Probe Warming (Oral Probes Only)
41
Theory of Operation
41
Circuit Operation
41
Liquid Crystal Display
42
Probe Switch
42
Mode Button
42
Horn
43
Appendix B. Specifications
45
Appendix C. Limited Warranty
47
Appendix D. Wiring Diagram
49
Figure 9: Schematic Diagram
49

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Welch Allyn SureTemp 986 Operating Instructions Manual

Welch Allyn SureTemp 986 Operating Instructions Manual (20 pages)

Digital Thermistor Thermometer

Brand: Welch Allyn | Category: Thermometer | Size: 0 MB

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