Welch Allyn 53N00 - Default Chapter; Table of Contents

Service Manual iii
Safety.........................................................1
General safety considerations .............................................1
Electrostatic discharge (ESD) ..............................................2
Symbols ..............................................................3
Service overview.................................................5
Purpose and scope ......................................................5
Technical support services ................................................5
Returning products ......................................................6
Product configurations ...................................................6
Recommended service intervals ...........................................7
Service options .........................................................7
Related documents .....................................................7
Service menu ..........................................................7
Functional verification .............................................9
Functional verification overview ............................................9
Equipment required .....................................................9
Functional verification procedure ..........................................11
Checklist and test results report form ......................................31
Troubleshooting and repair ........................................33
Troubleshooting chart...................................................33
Requirements for module-level repair and replacement.........................36
NIBP characterization ...................................................36
Welch Allyn monitor service utility .........................................37
Disassembly procedure ..........................................55
Procedures overview ...................................................55
Remove and disconnect the battery........................................58
Separate the front and rear chassis ........................................59
Disassemble the front chassis assembly ....................................60
Remove the LCD display from the main board ...............................62
Disassemble the rear chassis assembly.....................................63
Remove the main board .................................................64
Disassemble and remove the NIBP assembly ................................67
Remove and replace the speaker ..........................................69
Remove and disassemble the printer assembly...............................71
Disassemble the temperature module ......................................79
Disassemble the Nellcor SpO
2
assembly....................................82
Disassemble the Masimo SpO
2
assembly ...................................85
Replacement parts ..............................................87
Updates and service bulletins ......................................99
DC power cable clamp ..................................................99