Contents
Symbols ......................................................................................................................................... 1
Safety .............................................................................................................................................. 5
Warnings and cautions ..................................................................................................................................................... 5
General safety considerations ...................................................................................................................................... 6
Electrostatic discharge (ESD) ....................................................................................................................................... 7
Overview ....................................................................................................................................... 9
Purpose and scope ............................................................................................................................................................. 9
Technical support services ............................................................................................................................................. 9
Recommended service intervals ............................................................................................................................. 12
Configuration options .................................................................................................................................................... 13
The Welch Allyn Service Tool ..................................................................................................................................... 14
Controls and indicators ......................................................................................................... 17
Connections ............................................................................................................................... 19
Power-up sequence ................................................................................................................ 21
Troubleshooting ...................................................................................................................... 23
Power ........................................................................................................................................................................................ 23
Display ...................................................................................................................................................................................... 24
Communication ................................................................................................................................................................. 24
NIBP ............................................................................................................................................................................................ 25
System errors ....................................................................................................................................................................... 26
Disassembly and repair ......................................................................................................... 27
Required tools and equipment ................................................................................................................................ 28
Disassemble the external housing ......................................................................................................................... 28
Separate the chassis assembly from the circuit board assembly ........................................................ 31
Disassemble the chassis assembly ......................................................................................................................... 33
Disassemble the circuit board assembly ............................................................................................................ 36
Reassembly ................................................................................................................................ 39
Functional verification tests ................................................................................................ 43
About the Welch Allyn Service Tool ...................................................................................................................... 43
Required equipment ....................................................................................................................................................... 44
Test Bluetooth radio functionality .......................................................................................................................... 45
Service record ...................................................................................................................................................................... 46
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