90121

Spacelabs Healthcare · Vital Signs Monitors

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Spacelabs 90121 Operations Manual

Operator's ManualArchive copyEN
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Stuck? Start here

✅ Check the simple stuff first
  1. Make sure the patient is safe — swap in a backup unit if you need to.
  2. Reproduce the complaint yourself and write down exactly what you see (screen, alarm, code).
  3. Check power, battery, cables, accessories, and settings before ordering parts.
  4. Then open the service manual above and follow its troubleshooting section.
🧰 Common checks for Vital Signs Monitors (2)

Won't power on source ↗

  • Confirm AC cord/outlet and battery charge
  • Check internal power/battery harnesses
  • Measure power supply output against spec (15 V DC on Welch Allyn Connex and Philips VS3)
  • Charge battery fully; replace if still empty

Touchscreen issues source ↗

  • Check whether touch is disabled/locked
  • Calibrate touchscreen
  • Check touchscreen cables before replacing parts
📞 Still stuck? Call Spacelabs Healthcare

Contact Spacelabs Healthcare US

📞 Tech support
1-800-522-7025, option 2
🕘 Hours
24/7
🌐 Portal
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