Philips M3921A - Page 66

Troubleshooting Guide
54 Chapter 5 - Troubleshooting
3 NiBP Pressure Violation Error.
• The pressure on the cuff
could not be removed by
normal means.
• A fault has been detected in
the NiBP system that could
not be handled by releasing
pressure by normal means.
• NiBP system has released
pressure using safety valve.
1. Cycle power.
2. Check for blocked tubing in
the pneumatic system.
3. Replace Main PCB.
Note: This error may occur
during a blood
pressure measurement
in STAT mode, if the leg
cuff is used.
4 The measured value of the 3.3V
power supply is low.
1. Check power supply.
2. Replace power supply
assembly.
5 The measured value of the 3.3V
power supply is high.
1. Check power supply.
2. Replace power supply
assembly.
6 The measured value of the 12V
power supply is low.
1. Check power supply.
2. Replace power supply
assembly.
7 The measured value of the 12V
power supply is high.
1. Check power supply.
2. Replace power supply
assembly.
8 The measured value of the 5V
power supply is low.
1. Check power supply.
2. Replace power supply
assembly.
9 The measured value of the 5V
power supply is high.
1. Check power supply.
2. Replace Main PCB.
A The measured value of the
isolated reference supply on the
front end is low.
1. Check power supply.
2. Replace Main PCB.
B The measured value of the
isolated reference supply on the
front end is high.
1. Check power supply.
2. Replace Main PCB.
C The measured value of the
isolated reference supply on the
front end is high.
1. Check power supply.
2. Replace Main PCB.
64 The SpO
2
module is sending an
error message to the host CPU.
1. Ensure MP-205 module is
properly connected.
2. Replace MP-205 module.
3. If problem persists, replace
Main PCB.
Hex Code Explanation Recommended Action