Patient monitors · IntelliVue family

Philips IntelliVue MP40: troubleshooting and error codes

The ServiceForge knowledge base holds 76 documented symptoms for the Philips IntelliVue MP40, with 199 ranked causes, 26 diagnostic checks with test points and expected values, and 11 error codes. Each symptom below shows its causes and the first check; the rest is one connection away. Connect ServiceForge to your AI

Symptoms

Integrated display is blank or brightness reduced caution

Display shows no image or brightness is significantly reduced, making content unreadable

Ranked causes

1. Display overheating due to environment (common)
2. Flat Panel Adapter flex not connected (occasional)
3. Backlight Inverter Cable not connected (occasional)
4. Backlight tubes defective (occasional)
5. Backlight Inverter board defective (rare)
6. Panel Adapter flex defective (rare)
7. LCD Flat panel defective (rare)
8. Main board defective (rare)

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

Power On LEDs fail to illuminate after power button press

Green Power On LED or Red Error LED remain off after pressing power on button

Ranked causes

1. Remote devices connected or malfunctioning (common)
2. Power Switch Micro Controller hung (occasional)
3. Flat panel adapter not connected to main board (common)
4. I/O boards defective or causing conflict (occasional)
5. Touch controller, Navigation Point, ECG Out, or MSL board defective (occasional)
6. Flat panel adapter defective (occasional)
7. Integrated 4-Slot Rack defective (occasional)
8. Main Board defective (rare)

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

External Touch Display not functioning caution

External touchscreen does not respond to user input; either temporarily or permanently disabled

Ranked causes

1. Touchscreen temporarily disabled (common)
2. Touchscreen permanently disabled in settings (occasional)
3. External Touch cable not connected (occasional)
4. RS232/MIB driver misconfigured (occasional)
5. MIB Board defective (rare)
6. External touch defective (rare)
7. Main board defective (rare)

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

Integrated Touch Screen not functioning caution

Touchscreen does not respond to user input; either temporarily or permanently disabled

Ranked causes

1. Touchscreen temporarily disabled (common)
2. Touchscreen permanently disabled in settings (occasional)
3. Flat panel adapter not connected (occasional)
4. Touch controller not connected (occasional)
5. Touch panel cable not connected (occasional)
6. Touch controller board or touch sensor defective (rare)
7. Main board defective (rare)

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

AC LED does not light up

AC power indicator LED fails to illuminate when AC power should be present

Ranked causes

1. AC Connection not OK (common)
2. Flat panel adapter not connected to main board (common)
3. LED defective (occasional)
4. Integrated 4-Slot Rack defective (occasional)
5. Main Board defective (rare)
6. Power supply defective (rare)

First check

Verify AC power at wall outlet

Test point: AC outlet
Tools: Visual inspection, multimeter

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

External device not receiving data

External device connected to MIB/RS232 is not receiving data from monitor

Ranked causes

1. Port not configured for data export (common)
2. Wrong data export protocol configured (common)
3. Cable not connected or defective (common)
4. Device protocol version incompatible (occasional)
5. Terminal concentrator incompatible (rare)
6. MIB/RS232 board in wrong slot (rare)

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

Red Error LED stays on continuously patient safety

Red error LED remains lit continuously, indicating defective internal component

Ranked causes

1. External connected device defective (common)
2. I/O Board defective (occasional)
3. Touch controller or other optional board defective (occasional)
4. Measurement Server Mount defective (rare)
5. Main board defective (occasional)
6. Integrated 4-Slot rack defective (rare)

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

Remote input device not functioning caution

Mouse or keyboard connected to Remote Extension Device does not respond to input

Ranked causes

1. Remote Extension Device not connected to monitor (common)
2. Input Device not connected properly (common)
3. Input Device defective (occasional)
4. Remote Extension Device defective (occasional)
5. Remote Device I/O board in wrong slot (rare)
6. Remote Device I/O board defective (rare)

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

Speed Point not functioning (attached to Remote Extension Box) caution

Speed Point (input device) attached to Remote Extension Box does not respond

Ranked causes

1. Remote Extension Device not connected to monitor (common)
2. Navigation Point not connected properly (common)
3. Navigation Point defective (occasional)
4. Remote Extension Device defective (occasional)
5. Remote Device I/O board in wrong slot (rare)
6. Remote Device I/O board defective (rare)

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

External Display is blank caution

External monitor connected via video port displays no image or is completely black

Ranked causes

1. Video cable not connected (common)
2. External display has no power (common)
3. External display is defective (occasional)
4. System Interface board defective (rare)
5. Main board defective (rare)

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

Keyboard/Mouse not functioning (remote extension)

Input devices attached via remote extension box are unresponsive

Ranked causes

1. Remote extension box not connected or input device not connected to box (common)
2. Keyboard or mouse device defective (common)
3. Remote extension device defective (occasional)
4. Remote device I/O board in wrong slot (occasional)
5. Remote device I/O board defective (occasional)

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

No central monitoring possible (wireless)

Wireless monitor cannot connect to central station or reach access point

Ranked causes

1. Monitor out of wireless access point range (common)
2. Wireless adapter has no power (common)
3. Wireless adapter firmware revision incorrect (initial install) (occasional)
4. Wireless adapter defective (occasional)
5. Wireless adapter or access point configuration incorrect (occasional)

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

AGM on RS232 port not functioning

AGM (Accessory Gateway Module) connected to RS232 port is not operational

Ranked causes

1. MIB/RS232 port not configured for AGM (common)
2. Cable not connected or defective (common)
3. MIB/RS232 board in wrong slot (occasional)
4. MIB/RS232 board defective (rare)

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

Alarm occurs but no alarm sound issued caution

Monitor triggers alarm condition but no audible alarm tone is heard

Ranked causes

1. Audible alarm indicators switched off (common)
2. Volume set to 0 (common)
3. Speaker defective (occasional)
4. Sound amplifier on main board defective (rare)

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

Alarm occurs but no LED lights up

Alarm condition triggered but alarm indicator LED not illuminated

Ranked causes

1. Environmental lighting too bright (common)
2. Alarm LED board cable disconnected (common)
3. Alarm LED board defective (occasional)
4. Main board defective (rare)

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

Keyboard/Mouse not functioning (direct connection)

Input devices attached directly to monitor are unresponsive

Ranked causes

1. Keyboard/Mouse not connected properly (common)
2. Keyboard or mouse device defective (common)
3. PS/2 I/O board in wrong slot (occasional)
4. PS/2 I/O board defective (occasional)

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

Monitor alarmed but Nurse Call not activated patient safety

Monitor detects alarm condition but Nurse Call system does not activate

Ranked causes

1. Relay configuration incorrect (common)
2. Cable connection incorrect (common)
3. Nurse Call Relay board in wrong slot (occasional)
4. Nurse Call Relay board defective (rare)

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

Print device Local unavailable status

Print device Local 1 or Local 2 shows unavailable; printer job stalled

Ranked causes

1. Printer power off (common)
2. Printer paper tray empty (common)
3. Cabling not connected correctly (occasional)
4. I/O board defect (rare)

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

Printouts not as expected

Printed reports have incorrect appearance, size, or quality

Ranked causes

1. Paper size not correctly configured (common)
2. Printer resolution not correctly configured (common)
3. Color support misconfigured (occasional)
4. Printer not compatible (rare)

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

Recorder not communicating with system

Recorder module not communicating with monitor system

Ranked causes

1. Poor connection to 4-slot rack (common)
2. Multiple recorder modules installed (occasional)
3. System not configured properly (occasional)
4. Too many modules connected (rare)

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

Remote Alarm Device - alarm on screen but not on device patient safety

Alarm appears on monitor display but no LED or sound on remote alarm device

Ranked causes

1. Cabling not connected (common)
2. Cabling defective (occasional)
3. I/O board defective (occasional)
4. Remote Alarm Device defective (occasional)

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

Alarm indicator check INOP

INOP 'Check Alarm Lamps' is displayed

Ranked causes

1. ECG Out/Alarm LED board cable disconnected (common)
2. ECG Out/Alarm LED board defective (occasional)
3. Main board defective (rare)

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

Alarm INOP message SPEAKER MALFUNCTION displayed

INOP message for speaker malfunction appears on monitor display

Ranked causes

1. Speaker cable disconnected (common)
2. Speaker defective (common)
3. Sound amplifier on main board defective (occasional)

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

BAD SERVER LINK INOP

INOP 'BAD SERVER LINK' is displayed

Ranked causes

1. Unexpected data on MSL or cable problem (common)
2. Measurement server incompatible software revision (occasional)
3. Communication between components not functioning (occasional)

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

Basic troubleshooting checks for monitor operation

Initial diagnostic checks for common power and connectivity issues before detailed troubleshooting

Ranked causes

1. Power switch off (common)
2. Battery not adequately charged (common)
3. AC power not connected (common)

First check

Verify power switch is turned on

Test point: Monitor power switch
Expected: Power switch in ON position

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

Measurement server configuration not supported

Prompt message 'Measurement Server Configuration not supported' is displayed

Ranked causes

1. Unsupported measurement server extension connected (common)
2. Measurement server extension defective (occasional)
3. Measurement server unit defective (occasional)

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

MSL measurement server not supported INOP

INOP message 'MsmtSrv not Supp' is displayed

Ranked causes

1. Monitor and measurement server software versions incompatible (common)
2. Too many measurement servers connected (common)
3. Unsupported measurement server type connected (occasional)

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

Network unsupported LAN message

INOP 'Unsupported LAN' is displayed

Ranked causes

1. Network infrastructure not operational (common)
2. Monitor connected to wrong network (occasional)
3. IP address conflict after infrastructure reinstall (occasional)

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

No marker pulse displayed on monitor high voltage

No ECG marker pulse is displayed on monitor or no ECG-OUT signal to Defib

Ranked causes

1. Cabling not connected (common)
2. ECG OUT board defective (occasional)
3. Main board defective (rare)

First check

Disconnect MMS and Defib cable, power cycle monitor, observe red LED in ECG OUT section

Test point: ECG OUT board red LED
Expected: LED should flash for 1 second at power on

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

Standby LED or Error LED fail to illuminate

Green On/Standby LED or Red Error LED remain off after pressing power on button

Ranked causes

1. Flat panel adapter not connected to main board (common)
2. Flat panel adapter defective (occasional)
3. Main board defective (rare)

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

Alarm LEDs remain off patient safety

Alarm indicator LEDs do not illuminate, preventing visual alarm indication

Ranked causes

1. ECG Out/Alarm LED board defective (common)
2. Main board defective (occasional)

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

Calibration: Gas flow adjustment

Gas flow rate exceeds permitted maximum; requires adjuster screw tuning and possible flow restriction replacement

Ranked causes

1. Gas flow adjuster not optimally set (common)
2. Flow restriction incorrectly sized or clogged (occasional)

First check

Repeat gas flow performance check

Test point: Unit outlet
Expected: Flow within permitted maximum

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

Inserted module does not function

Module is installed but does not perform its intended function

Ranked causes

1. Connector damaged (occasional)
2. Internal connection defective (occasional)

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

Measurement server does not start (LEDs normal)

Measurement server connected to MSL has normal LED activity but does not initialize

Ranked causes

1. Communication lines in MSL cable or connectors broken (common)
2. MSL connector board defective (occasional)

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

Module LED normal but not recognized

Module LEDs behave normally but monitor does not recognize or use the module

Ranked causes

1. Monitor software does not support module (occasional)
2. Label conflict (occasional)

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

Navigation Point not functioning (attached to monitor) caution

Input dial/pad connected directly to monitor does not respond to user input

Ranked causes

1. Navigation Point not connected properly (common)
2. Navigation Point defective (occasional)

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

Network connectivity message: no central assigned

Prompt displays 'no central assigned to this bed'

Ranked causes

1. Monitor label not set (monitor-labeled bed configuration) (common)
2. Network communication problem with Philips Information Center (occasional)

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

No test sound issued patient safety

Speaker does not emit audio test tone, indicating speaker or audio circuit failure

Ranked causes

1. Speaker defective (common)
2. Main board defective (occasional)

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

Print device Remote unavailable status

Print device Remote 1, 2, or 3 unavailable; printer job stalled

Ranked causes

1. Print error on Philips Information Center (occasional)
2. Network connection not functioning (occasional)

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

Print job could not be queued

Printer job cannot be queued; print device not found or unavailable

Ranked causes

1. Printer disabled in Setup menu (common)
2. Paper size mismatch (common)

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

Recorder paper not feeding properly

Recorder paper does not advance smoothly or correctly during operation

Ranked causes

1. Paper roll off center (common)
2. Dirty roller (common)

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

Recorder poor print quality

Recorder printhead produces poor quality output

Ranked causes

1. Printhead dirty (common)
2. Printhead failure (occasional)

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

Red Error LED blinks (cyclic reboots) patient safety

Red error LED blinks repeatedly, indicating hardware failure or software fault causing cyclic reboots

Ranked causes

1. Hardware Failure (unknown)
2. Software Fault (unknown)

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

Remote Alarm Device - alarm LEDs illuminate but no sound patient safety

Alarm LEDs light up on remote device but audible alarm is not emitted

Ranked causes

1. Speaker defective (common)
2. Remote device I/F defective (occasional)

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

SERVERLINK MALF message

INOP 'SERVERLINK MALF' is displayed with audible beep every 2 seconds

Ranked causes

1. MSL cable defective (common)
2. MMS connector board defective (occasional)

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

Alarm on VueLink device has no sound on monitor

Device connected via VueLink generates alarm but no sound plays on main monitor

Ranked causes

1. VueLink configuration incorrect (common)

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

Calibration unit contains stale air before first use

Normal air present in new calibration unit causes inaccurate calibration results

Ranked causes

1. Factory air remaining in new unit (common)

First check

Verify gas cylinders are fitted before purging

Test point: Rear panel cylinder opening
Expected: Gas cylinder installed and hand-tight

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

Calibration: Gas outlet blockage

Deposits collected in gas outlet pipe prevent accurate gas delivery

Ranked causes

1. Deposits accumulated in gas outlet (occasional)

First check

Inspect gas outlet for deposits or blockage

Test point: Gas outlet
Expected: Clear, no visible deposits or obstructions

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

Calibration: General cleaning of calibration unit caution

Routine maintenance to keep surfaces clean and free of dust

Ranked causes

1. Accumulated dust, dirt or residue on surfaces (common)

First check

Inspect unit surfaces for dust, dirt or contamination

Test point: Exterior surfaces
Expected: Clean, no visible dust or dirt

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

Calibration: Touchscreen

Touchscreen coordinates misaligned; requires recalibration to restore accurate touch response

Ranked causes

1. Touchscreen requires routine calibration or was accidentally mis-calibrated (common)

First check

Verify monitor is in service mode and calibration screen is accessible

Test point: Service mode menu
Expected: Hardware > Touch Calibration option available

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

Contact Philips support for unresolved issues

Escalation path when standard troubleshooting procedures do not resolve monitor problems

Ranked causes

1. Problem not covered in standard troubleshooting guide (occasional)

First check

Verify basic checks and standard troubleshooting completed

Test point: Troubleshooting documentation
Expected: Standard procedures attempted; problem not resolved

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

External Touch position invalid caution

External touchscreen coordinates do not match actual touch location on display

Ranked causes

1. Touch not calibrated (common)

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

Gas pressure indicator in black zone

Pressure indicator shows unit requires gas cylinder change before calibration

Ranked causes

1. Gas cylinder empty or depleted (common)

First check

Read gas pressure indicator on front panel

Test point: Pressure indicator
Expected: Not in black zone

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

INOP message CHECK NURSE CALL RELAY

Monitor displays INOP message for Nurse Call Relay board

Ranked causes

1. Nurse Call Relay board defective (common)

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

Measurement server does not start (no LEDs)

Measurement server connected to MSL cable but shows no LED activity or INOP

Ranked causes

1. No power to measurement server via MSL cable (common)

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

Monitor serial number location verification

Locate system serial number for support and parts ordering reference

Ranked causes

1. Need to identify monitor for service or support (common)

First check

Locate serial number on monitor front panel

Test point: Monitor lower right front panel
Expected: System serial number visible on label

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

MSL measurement server not supported and bad link

Prompt 'Measurement Server not supported, unplug device, switch monitor off/on' and INOP 'Bad Measurement Server' appear

Ranked causes

1. M3000A Measurement Server Revision A incompatible (common)

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

MSL power high INOP caution

INOP 'MSL Power High' is issued, indicating possible 15+ minute timeout

Ranked causes

1. Attached devices drawing excessive power from MSL (common)

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

MSL power off INOP caution

INOP 'MSL Power Off' is issued after prolonged power high condition

Ranked causes

1. Attached devices drawing too much power from MSL (common)

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

MSL power overload INOP caution

INOP 'MSL Power Overload' is displayed

Ranked causes

1. Short circuit in MSL system (common)

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

More symptoms

Navigation Point controls not responding
Obtain replacement parts
Printing message displayed but no report printed
Recorder module does not lock into 4-slot rack
Recorder system thinks door is open
Recorder system thinks out of paper
Recorder will not run
Remote Alarm Device - alarm sound but no LEDs light up
Remote Extension Device buttons not functioning
Software compatibility and supported module verification
Software revision check required for troubleshooting
Too many same modules message displayed
Touch panel deactivated after incomplete calibration
Touch Position invalid
Troubleshooting table resource reference
Unrecognized Measurement Module message displayed

16 more symptoms with ranked causes and checks are in ServiceForge. Connect ServiceForge to your AI

Error codes

Code	Meaning	Trigger	Severity
`BATT1/BATT2 MISSING`	One required battery not detected	Monitor configured for dual battery operation but only one battery detected	critical
`BATTERIES EMPTY / BATT 1/BATT 2 EMPTY`	Battery or batteries have insufficient charge for operation	Remaining battery-powered operating time less than 10 minutes	critical
`BATTERIES INCOMPAT / BATT 1/BATT 2 INCOMPAT`	Battery type incompatible with monitor	Wrong battery model installed	error
`BATTERIES LOW / BATT 1/BATT 2 LOW`	Battery charge level critically low	Remaining battery-powered operating time less than 20 minutes	warning
`BATTERIES MALF / BATT 1/BATT 2 MALFUNCTION`	Battery health status cannot be determined	Monitor cannot read battery status	critical
`CHARGER MALFUNCT`	Battery charger malfunction detected	Monitor power or battery charging circuit failure	critical
`CHECK INPUT DEVICES`	Navigation Point or other input device defective	Input device communication failure or malfunction detected	warning
`CHECKINTERVOLAGE`	Problem with internal voltages (5V, 12V)	Voltage out of specification during power-up or operation	error
`CHECK MONITOR TEMP`	Temperature inside monitor exceeds safe operating range	Internal temperature sensor detects excessive heat	warning
`INTERNAL COMM.MALF.`	Problem with I2C Bus communication in monitor	Internal communication bus failure detected	error
`SETTINGS MALFUNCTION`	Problem during configuration cloning or configuration memory corruption	Configuration file corruption or failed cloning process	error

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.