Patient monitors · Dinamap Pro family

GE Healthcare Dinamap Pro 100: troubleshooting and error codes

The ServiceForge knowledge base holds 27 documented symptoms for the GE Healthcare Dinamap Pro 100, with 43 ranked causes, 83 diagnostic checks with test points and expected values, and 17 error codes. Each symptom below shows its causes and the first check; the rest is one connection away. Connect ServiceForge to your AI

Symptoms

Incorrect, illegible, or no LCD output

LCD display shows incorrect information, is difficult to read, or shows no output at all.

Ranked causes

1. LCD fault (common)
2. Main board fault with audible alarm (occasional)
3. Negative supply to LCD (-9.6 Vdc) out of tolerance (occasional)

First check

Swap LCD module with a known good unit

Test point: LCD display output
Expected: Display shows correct and legible information

2 more checks with pass and fail actions, 3 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

NIBP pump sounds labored; inflation timeout or overpressure at start

At NIBP start, pump operates with labored sound and generates N33 (Inflation Timeout) or N00 (Overpressure) message.

Ranked causes

1. Kinked air hose or faulty cuff (common)
2. Blocked or kinked hose from pump output to front panel (occasional)
3. Pneumatic assembly failure (occasional)

First check

Test NIBP measurement with known good cuff and hose

Test point: NIBP connector with test cuff
Expected: NIBP measurement completes without timeout or overpressure error; pump sounds normal

2 more checks with pass and fail actions, 4 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

SpO2 probe disconnected error

LCD displays "SpO2 probe disconnected" error message.

Ranked causes

1. Faulty finger probe or extender cable (common)
2. Faulty internal SpO2 cabling (occasional)
3. Faulty SpO2 PWA (occasional)

First check

Connect known good SpO2 probe and extender cable

Test point: SpO2 connector port on monitor
Expected: Error clears; no "SpO2 probe disconnected" message

2 more checks with pass and fail actions, 3 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

System error P105, P110, or P115 after power-up patient safety

Failsafe alarm sounds during monitor power-up sequence and LCD displays System error code P105, P110, or P115.

Ranked causes

1. Faulty SpO2 PWA (common)
2. Isolated power supply module failure on Main board (occasional)
3. Main board processor SpO2 RS-232 communications failure (occasional)

First check

Swap SpO2 PWA with a known good unit

Test point: SpO2 PWA installation
Expected: Power-up completes without failsafe alarm or system error messages

2 more checks with pass and fail actions, 3 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Incorrect, missing segments, or no LED display output

LED display shows missing segments, is illegible, or shows no output.

Ranked causes

1. Main board fault with possible audible alarm (common)
2. No or low +4 Vdc LED supply (occasional)

First check

Verify presence of audible alarm

Test point: Speaker/buzzer output
Expected: Audible alarm indicates Main board processor failure

2 more checks with pass and fail actions, 3 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Menus skipped when rotor is turned

Rotor control does not properly step through menu items; selections are skipped.

Ranked causes

1. Rotor failure (common)
2. Main board failure (occasional)

First check

Swap rotor assembly with a known good unit

Test point: Rotor assembly connection
Expected: All menu items selectable without skipping

1 more check with pass and fail actions, 2 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

No LCD backlight

LCD display is not illuminated; backlight does not function.

Ranked causes

1. LCD faulty (common)
2. Main board fault (occasional)

First check

Swap LCD module with a known good unit

Test point: LCD backlight illumination
Expected: Backlight illuminates and display is visible

1 more check with pass and fail actions, 2 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

No rotor response

Rotor does not respond to user input or menu navigation commands.

Ranked causes

1. Rotor failure (common)
2. Main board failure (occasional)

First check

Swap rotor assembly with a known good unit

Test point: Rotor assembly connection
Expected: Rotor responds to button presses and rotation

1 more check with pass and fail actions, 2 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Overpressure warnings at NIBP initialization

LCD displays overpressure warning when NIBP is initialized, regardless of whether cuff and hose are connected.

Ranked causes

1. Kinked air hose or faulty cuff (common)
2. Partial or full blockage of internal pneumatic hosing (occasional)

First check

Visually inspect external cuff and hose for kinks and blockages

Test point: Cuff and external hose
Expected: No visible kinks; hose passes air when manually inflated

1 more check with pass and fail actions, 3 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Pump over-current condition detected

LCD displays error message "Pump Over Current 0 (code line failure), 0, 0" indicating over-current condition on pump circuit.

Ranked causes

1. Pump current sensing circuitry failure on Main board (occasional)
2. Pump failure (occasional)

First check

Swap Main board with a known good unit

Test point: Main board installation and pump control circuit
Expected: Pump operates normally; no over-current error displayed

1 more check with pass and fail actions, 2 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Unit does not power on from battery

Monitor fails to power up when powered by internal battery.

Ranked causes

1. Battery may be discharged (common)
2. PSU board fault (occasional)

First check

Measure battery terminal voltage

Test point: Battery terminals
Expected: Voltage within normal range
Tools: Voltmeter

1 more check with pass and fail actions, 2 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Unit does not power on from battery or external AC source

Monitor fails to power up regardless of whether powered by battery or AC mains.

Ranked causes

1. On/Off switch/rotor faulty (common)
2. +5Vdc supply low (occasional)

First check

Attempt to power on by pressing rotor switch

Test point: Rotor On/Off switch
Expected: Monitor powers on or shows menu selection capability

1 more check with pass and fail actions, 2 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Broken probe sensing failure

Temperature display does not read 106.0°F ±0.2°F when probe simulator is set to B.P., or LED display does not change to four dashes when BROKEN PROBE is pressed on simulator.

Ranked causes

1. Main PWA failure (common)

First check

Verify temperature display reading with probe simulator set to B.P.

Test point: Temperature display
Expected: 106.0°F ±0.2°F, ±0.2°F

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

Calibration: Neonatal overpressure point verification patient safety

Verify pressure at which overpressure detection system prevents cuff inflation and generates alarm for neonatal setting

Ranked causes

1. Neonatal overpressure setpoint requires verification or adjustment (occasional)

First check

Verify neonatal overpressure detection activates

Test point: Cuff pressure during pump inflation
Expected: Monitor prevents further inflation and generates alarm at neonatal overpressure setpoint
Tools: Manometer and pump

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

Calibration: NIBP linearity and zero offset caution

Verify that pressure transducers PT1 and PT2 accurately measure across the full measurement range from 0 to 250 mmHg.

Ranked causes

1. Pressure transducers out of calibration or linearity error (occasional)

First check

Set up calibration equipment and power on monitor

Test point: Main menu
Expected: Monitor displays Main menu; calibration equipment at 0 mmHg

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

Calibration: NIBP overpressure adult caution

Verify and adjust the pressure at which the dump valve opens for adult measurements. Equipment must open valve and release pressure at specified point.

Ranked causes

1. Overpressure potentiometer set incorrectly or adult setting derived from incorrect neonatal setting (common)

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

Calibration: NIBP overpressure neonatal caution

Verify and adjust the pressure at which the dump valve opens for neonatal measurements. Equipment must open valve and release pressure at specified point.

Ranked causes

1. Overpressure potentiometer (VR1) set incorrectly (common)

First check

Verify calibration equipment at zero pressure

Test point: Calibration pressure measurement system
Expected: 0 mmHg (0 mb)

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

Calibration: NIBP system adjustment

Full NIBP calibration procedure using two-point calibration at 0 and 200 mmHg; stores readings to system memory and vents to atmosphere

Ranked causes

1. NIBP calibration requires update or failed previous attempt (occasional)

First check

Establish zero pressure baseline

Test point: Manometer and system reference
Expected: 0 mmHg
Tools: Manometer

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

Calibration: NIBP system verification

Verify accuracy of NIBP readings against calibrated manometer; systolic and diastolic display pressures must match reference within tolerance

Ranked causes

1. NIBP calibration drift or inaccuracy (common)

First check

Verify calibration equipment baseline

Test point: Manometer zero reference
Expected: 0 mmHg (0 mb)
Tools: NIST calibrated digital manometer (±0.5 mm Hg accuracy)

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

Calibration: Temperature system verification (PRO 200 & 400 only)

Verify that temperature measurement functions are operating correctly using IVAC probe simulator across temperature range.

Ranked causes

1. Temperature probe malfunction or simulator not connected (occasional)

First check

Power on monitor and remove temperature probe from holster

Test point: Temperature probe holster; LCD temperature display
Expected: Temperature reading displayed; LED numbers flashing (real-time mode)

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

Pressing rotor switch fails to power on unit; menu selection is possible

Rotor On/Off switch does not activate unit power despite showing menu selection capability.

Ranked causes

1. Rotor On/Off switch assembly faulty (common)

First check

Swap rotor switch assembly with a known good unit

Test point: Rotor assembly seating and connection
Expected: Monitor powers on when rotor is pressed

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

Temperature system self-calibration failure

LCD displays error message "TSH_HW: PIC" indicating temperature system has failed self-calibration.

Ranked causes

1. Monitor has failed temperature self-calibration; Main board fault (common)

First check

Swap Main board with a known good unit

Test point: Main board installation and temperature calibration at startup
Expected: Temperature calibration completes without error; TSH_HW: PIC message does not appear

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

Unit does not respond to host communications

Monitor does not receive or respond to commands from external host or communications interface.

Ranked causes

1. PSU board unresponsive (common)

First check

Swap PSU board with a known good unit

Test point: PSU board installation and host communication port
Expected: Monitor responds to host commands after PSU replacement

1 more check with pass and fail actions, 2 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Verification: NIBP neonatal overpressure check caution

Verify that neonatal NIBP overpressure setting is within specified range and pressure release time is acceptable.

Ranked causes

1. Overpressure potentiometer set outside specification (occasional)

First check

Set up calibration equipment and power on monitor

Test point: Calibration equipment and monitor
Expected: Setup as in Figure 4-1; monitor displays Main menu

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

Verification: SpO2 probe disconnected detection

Verify that monitor correctly detects removal of SpO2 sensor and displays appropriate messages.

Ranked causes

1. SpO2 sensor disconnect detection malfunction (occasional)

First check

Operate with SpO2 sensor connected at 90 BPM

Test point: NELLCOR simulator and LCD display
Expected: Normal SpO2 and pulse readings displayed

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

Verification: SpO2 pulse data and saturation data

Verify SpO2 sensor operation and that monitor readings are within tolerance across full range of saturation and pulse rate settings.

Ranked causes

1. SpO2 sensor malfunction or simulator not connected (occasional)

First check

Connect SpO2 simulator and power on monitor

Test point: SpO2 sensor input on monitor front panel
Expected: Monitor powers up and displays Main Menu

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

Verification: SpO2 pulse search function

Verify that monitor correctly detects loss of SpO2 signal and displays appropriate message.

Ranked causes

1. SpO2 signal detection or alarm messaging malfunction (occasional)

First check

Set NELLCOR simulator pulse rate to zero

Test point: NELLCOR simulator pulse rate setting
Expected: Pulse rate = 0 BPM

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

Error codes

Code	Meaning	Trigger	Severity
`E00`	Temperature: Fail	Predictive temperature determination takes longer than 60 seconds or axillary temperature measurement attempted	warning
`E33`	Temperature: Fail	Temperature probe not connected or inoperable; temperature measurement unavailable	error
`HIGH TEMP`	High Temperature Alarm	Predictive temperature reading exceeds upper range limit for patient	warning
`LOW BATTERY`	Low Battery	Battery voltage drops below operational threshold	warning
`LOW BATTERY SYSTEM DISABLED`	Low Battery - System Disabled	Battery voltage drops to critical level; system cannot continue operation	critical
`N00`	Overpressure	Cuff pressure exceeds safe threshold; overpressure state detected	critical
`N33`	Timeout: Inflation	Inflation time exceeds 40 seconds or air leak detected during cuff inflation	error
`N44`	Timeout: Total	Determination time exceeds 2 minutes; motion artifact detected	warning
`N55`	Timeout: Pressure	Cuff pressure elevation exceeds 1 minute; motion artifact detected	warning
`N99`	NIBP Failed	Unable to register NIBP measurement due to insufficient signal	error
`NIBP RANGE ERROR`	NIBP Range Error	NIBP algorithm produces values outside target range	warning
`N, P, E, I, S (other)`	Internal System Fault	System detects internal error condition	critical
`P00`	No SpO2 Sensor	SpO2 sensor not connected or not detected by monitor	error
`P55`	SpO2 No Signal	No or very weak SpO2 signal detected; inadequate sensor signal quality	error
`PRINTER NO PAPER`	Printer Out of Paper	Printer detects no paper or paper door is open	warning
`SpO2 CABLE?`	SpO2 Cable Defect	SpO2 sensor or cable possibly defective; cable not connected properly	warning
`SpO2 PLACEMENT?`	SpO2 Sensor Placement Issue	SpO2 signal is weak or noisy; sensor position is questionable	warning

Likely causes and actions for each code 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.