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36 Troubleshooting and repair Welch Allyn VSM 300 Series
Requirements for module-level repair and replacement
NIBP characterization
The Welch Allyn Monitor Service Utility facilitates this characterization procedure. For
more information, see “Characterizing NIBP” on page 41.
Note
All repairs to a monitor under warranty must be performed at an authorized Welch
Allyn service center.
Activity Recommended action
Update the software Use the VSM Service Utility (810-1784-XX).
Replace the main board Return the monitor to an authorized service center.
Replace the NIBP module. Replacement procedure beginning on page 55.
Perform a complete functional verification (page 9).
Warning: Always characterize NIBP after replacing any NIBP
component. (See “NIBP characterization” on page 36.)
Replace the SpO
2
board Replacement procedure beginning on page 55.
Perform a complete functional verification (page 9).
Replace the SpO
2
side panel. Replacement procedure beginning on page 55.
Perform a complete functional verification (page 9).
Replace the temperature board. Replacement procedure beginning on page 55.
Perform a complete functional verification (page 9).
Replace the printer. Replacement procedure beginning on page 55.
Perform a complete functional verification (page 9).
Replace the front panel. Replacementprocedure beginning on page 55.
Perform a complete functional verification (page 9).
WARNING Whenever any component of the NIBP assembly (pump, air filter,
check valve, tubing, or NIBP board) is replaced, the NIBP module must be
characterized before the monitor is returned to service.
WARNING If the NIBP module is not properly characterized, the NIBP cuff could
overinflate, which could be hazardous to neonatal patients.