Patient monitors

Integra MPM-1: troubleshooting and error codes

The ServiceForge knowledge base holds 24 documented symptoms for the Integra MPM-1, with 60 ranked causes, 9 diagnostic checks with test points and expected values, and 0 error codes. Each symptom below shows its causes and the first check; the rest is one connection away. Connect ServiceForge to your AI

Symptoms

CPP reading displays as dashes patient safety

Cerebral perfusion pressure reading shows '---' or is unavailable

Ranked causes

1. Bedside monitor connection issue (common)
2. Defective adapter cable (occasional)
3. Defective PMIO cable (occasional)
4. Faultybedside monitor (occasional)
5. Faulty PMIO/Analogue Board connection (rare)
6. Analogue Board malfunction (rare)

6 corrective actions and part numbers are in ServiceForge. Connect ServiceForge to your AI

ICP/Systolic/Diastolic reads out of range or as dashes patient safety

Pressure readings display as '---' or outside operating range (-50 to 300 mmHg)

Ranked causes

1. Catheter connection issue (common)
2. Imperfect Pre-Amp cable connection (common)
3. Damaged catheter (occasional)
4. Damaged Pre-Amp cable (occasional)
5. Faulty Analogue/Pre-Amp flex connection (rare)
6. Faulty Digital or Analogue Board (rare)

6 corrective actions and part numbers are in ServiceForge. Connect ServiceForge to your AI

ICT temperature reading out of range or as dashes patient safety

Intracranial temperature reading shows '---' or is outside valid range (15-45°C)

Ranked causes

1. Catheter temperature connector issue (common)
2. Faulty catheter (common)
3. Wrong catheter in use (occasional)
4. Damaged Pre-Amp cable (occasional)
5. Faulty Temperature/Analogue Board connection (rare)
6. Analogue Board malfunction (rare)

6 corrective actions and part numbers are in ServiceForge. Connect ServiceForge to your AI

Catheter connection error patient safety

Display reads 'CHECK CATHETER CONNECTION'

Ranked causes

1. Defective external connection (common)
2. Damaged catheter (common)
3. Faulty Pre-Amp cable (common)
4. Faulty Analogue/Digital Board connection (occasional)
5. Faulty Digital or Analogue Board (rare)

5 corrective actions and part numbers are in ServiceForge. Connect ServiceForge to your AI

Unit does not operate on AC power, but system works on battery high voltage

MPM-1 fails to power on when connected to AC mains, but operates normally when on battery.

Ranked causes

1. AC power cord not connected (common)
2. Faulty AC power cord (common)
3. Blown fuse (common)
4. Power module malfunctioning (occasional)

4 corrective actions and part numbers are in ServiceForge. Connect ServiceForge to your AI

Discrepancy in pressure reading between MPM-1 and host monitor patient safety

Pressure values displayed on host monitor differ from MPM-1 display; readings do not agree.

Ranked causes

1. Host monitor out of calibration (common)
2. Incorrect host monitor adapter cable (occasional)
3. Faulty PMIO cable (occasional)

3 corrective actions and part numbers are in ServiceForge. Connect ServiceForge to your AI

Discrepancy in temperature reading between MPM-1 and host monitor patient safety

Temperature values displayed on host monitor differ from MPM-1 display; readings do not match.

Ranked causes

1. Host monitor out of calibration (common)
2. Incorrect host monitor adapter cable (occasional)
3. Faulty PMIO cable (occasional)

3 corrective actions and part numbers are in ServiceForge. Connect ServiceForge to your AI

MPM-1 displays numerical ICP but no CPP display patient safety

MPM-1 shows intracranial pressure (ICP) value but cerebral perfusion pressure (CPP) is missing from host monitor.

Ranked causes

1. Loose cable connection (common)
2. Faulty cable (occasional)
3. Faulty connection between PMIO flex cable and Analogue Board (occasional)

3 corrective actions and part numbers are in ServiceForge. Connect ServiceForge to your AI

No Isolated Analogue Output

Isolated analogue output signal is absent or not functioning.

Ranked causes

1. Faulty connection between Analogue Board and Isolated Analogue Output cable (common)
2. Loose analogue output cable (common)
3. Faulty cable (occasional)

3 corrective actions and part numbers are in ServiceForge. Connect ServiceForge to your AI

No pressure waveform or numerical display on host monitor but MPM-1 displays mean pressure patient safety

Host monitor screen does not show pressure waveform or numbers; MPM-1 pressure display is normal.

Ranked causes

1. Faulty connection between PMIO flex cable and Analogue Board (occasional)
2. Faulty PMIO or monitor adapter cable (common)
3. Host monitor malfunction (occasional)

3 corrective actions and part numbers are in ServiceForge. Connect ServiceForge to your AI

No temperature waveform or numerical display on host monitor but MPM-1 displays mean temperature patient safety

Host monitor does not show temperature waveform or numbers; MPM-1 temperature is normal.

Ranked causes

1. Imperfect connection between PMIO flex cable and Analogue Board (occasional)
2. Faulty PMIO or monitor adapter cable (common)
3. Host monitor malfunction (occasional)

3 corrective actions and part numbers are in ServiceForge. Connect ServiceForge to your AI

Battery does not charge

Battery fails to charge when unit is connected to AC power.

Ranked causes

1. Faulty battery (common)
2. Battery terminal wires reversed (occasional)

2 corrective actions and part numbers are in ServiceForge. Connect ServiceForge to your AI

Unit does not operate on battery, but system operates on AC power

MPM-1 fails to power on when using battery, but operates normally when connected to AC mains.

Ranked causes

1. Faulty battery (common)
2. Battery terminal wires reversed (occasional)

2 corrective actions and part numbers are in ServiceForge. Connect ServiceForge to your AI

Alarm disabled when both ICP and CPP set to OFF patient safety

ALARM DISABLED INDICATOR remains ON; both alarms disabled as warning when parameters set to OFF

Ranked causes

1. Both CPP ALARM and ICP ALARM levels set to OFF (common)

First check

Verify CPP ALARM level setting

Test point: CPP ALARM parameter
Expected: Not set to OFF

1 more check with pass and fail actions, 1 corrective action, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Alarm silenced for limited duration patient safety

Press SILENCE ALARM button; ALARM DISABLED INDICATOR flashes; parameter in alarm mode silences for 3 minutes and flashes on screen; silence expires after 3 minutes

Ranked causes

1. Alarm silencing feature active (common)

First check

Verify ALARM DISABLED INDICATOR state

Test point: ALARM DISABLED INDICATOR
Expected: Flashing when alarm silenced

1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI

Alarms silenced for 3 minutes patient safety

Parameter in alarm mode is silenced and flashes on screen after SILENCE ALARM button is pressed; ALARM DISABLED INDICATOR flashes

Ranked causes

1. Operator activated SILENCE ALARM button (common)

First check

Verify ALARM DISABLED INDICATOR status

Test point: ALARM DISABLED INDICATOR
Expected: Flashing when alarm is silenced

1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI

Both alarms disabled patient safety

ALARM DISABLED INDICATOR is ON and both ICP and CPP alarms are set to OFF; no alarms will sound

Ranked causes

1. Both CPP ALARM and ICP ALARM set to OFF (common)

First check

Verify alarm settings

Test point: CPP ALARM and ICP ALARM level controls
Expected: Both set to OFF

1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI

Calibration: External bedside monitor zero balance patient safety

Calibrate or balance external bedside monitor using CAL STEP button to advance through mmHg values and synchronize zero point

Ranked causes

1. External bedside monitor requires zero calibration (common)

First check

Press CAL STEP button repeatedly

Test point: MPM-1 Display and CAL STEP button
Expected: 0 mmHg displayed on MPM-1 (cycles through 0, 20, 40, 100, 200)

1 more check with pass and fail actions, 1 corrective action, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Calibration: ICP pressure zero adjustment patient safety

Before catheter insertion, ensure MPM-1 displays ICP pressure of 0 mmHg and temperature at reasonable value (room temperature)

Ranked causes

1. Transducer zero offset requires adjustment (common)

First check

Verify ICP pressure display

Test point: MPM-1 Display
Expected: 0 mmHg

1 more check with pass and fail actions, 1 corrective action, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Dark display while unit operating

LCD screen appears dark despite MPM-1 powered on and functioning

Ranked causes

1. Faulty LCD or connections (unknown)

1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI

Dominant color on LCD display

LCD screen displays with one color dominant or abnormal color representation

Ranked causes

1. Faulty LCD or connections (unknown)

1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI

LCD displays white vertical lines

LCD screen shows white vertical lines across display

Ranked causes

1. Faulty LCD or connections (unknown)

1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI

No RS-232 communication

RS-232 serial communication between MPM-1 Digital Board and external device is not functioning.

Ranked causes

1. Faulty connection between Digital Board and RS-232 cable (common)

1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI

ON and OFF button does not work properly

Power button fails to respond or operates intermittently.

Ranked causes

1. Faulty membrane switch and/or power supply (unknown)

1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI

Community

0 fixes logged by technicians through their AI, with outcomes, for this model.

ServiceForge knowledge base record. Field-unverified unless technicians confirmed it. A teaching summary of the record, not a service manual. Export 2026-10-14.