Patient monitors · SureSign family

Philips VS3: troubleshooting and error codes

The ServiceForge knowledge base holds 205 documented symptoms for the Philips VS3, with 446 ranked causes, 281 diagnostic checks with test points and expected values, and 286 error codes. Each symptom below shows its causes and the first check; the rest is one connection away. Connect ServiceForge to your AI

Symptoms

Monitor will not power on with AC caution

Monitor powers on with battery but not when connected to AC outlet

Ranked causes

1. AC power cord unplugged (common)
2. AC power cord damaged (common)
3. Power supply fuse blown (occasional)
4. Power supply cable malfunction (occasional)
5. Power supply output voltage failure (occasional)
6. AC connector malfunction (rare)
7. Monitor keypad worn (rare)
8. Main board failure (occasional)

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

Monitor does not power on with AC power, works with battery

Monitor cannot be turned on using AC power connection but powers on normally when using battery power

Ranked causes

1. AC power cord unplugged or broken (common)
2. Fuse is blown (common)
3. Power supply cable has malfunctioned (occasional)
4. Power supply has malfunctioned (occasional)
5. AC power connector has malfunctioned (occasional)
6. Monitor keypad is worn (rare)
7. Main board has malfunctioned (rare)

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

Monitor will not power on with AC power (battery works) caution

AC power button does not turn on monitor; battery power operates normally

Ranked causes

1. AC power cord unplugged or broken (common)
2. Fuse is blown (common)
3. Power supply cable malfunction (occasional)
4. Power supply output failure (occasional)
5. AC power connector malfunction (occasional)
6. Monitor keypad worn (rare)
7. Main board malfunction (rare)

First check

Verify AC power cord is plugged in

Expected: Power cord connected to wall outlet
Tools: Visual inspection

2 more checks with pass and fail actions, 7 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Temperature measurements are not displayed

Temperature readings do not appear on monitor screen

Ranked causes

1. Probe is disconnected from monitor (common)
2. Probe is misplaced (common)
3. Predictive temperature is over range (occasional)
4. Probe malfunctioned (occasional)
5. Front end board malfunction (rare)
6. Temperature module malfunctioned (rare)
7. Main board malfunctioned (rare)

First check

Verify probe is connected and seated

Test point: Probe connector and probe well
Expected: Probe connected and fully seated

1 more check with pass and fail actions, 7 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Unit does not power on with AC power high voltage

Monitor turns on with battery power but not with AC power supply

Ranked causes

1. AC power cord unplugged or disconnected (common)
2. AC power cord broken (common)
3. Fuse blown (common)
4. Power supply cable malfunctioned (occasional)
5. Power supply output voltage incorrect (occasional)
6. AC power connector malfunctioned (occasional)
7. Main board malfunctioned (rare)

First check

Verify AC power cord is connected to outlet

Test point: AC power outlet
Expected: Power cord plugged in

3 more checks with pass and fail actions, 7 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Battery: Verify charge level and health status patient safety

Check battery charge status via LED indicator, battery status pane, and alarm messages to assess battery condition and charge level.

Ranked causes

1. Low battery charge (common)
2. Battery nearly discharged (common)
3. Battery module malfunction or temperature out of range (occasional)
4. Battery charger power failure (rare)
5. Battery overcharged (occasional)
6. Battery over temperature (occasional)

First check

Observe LED charging indicator color

Test point: front panel charging LED
Expected: Green=full/nearly full; Flashing green=medium; Yellow=low; Flashing yellow=nearly discharged

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

Monitor screen is blank

Display remains dark with no visible content when power is on

Ranked causes

1. Monitor in power save mode (common)
2. Speaker/fan cables disconnected (common)
3. Bad backlight LCD connection (occasional)
4. Bad backlight inverter (occasional)
5. Bad LCD (occasional)
6. Main PCB failure (occasional)

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

Monitor screen is blank despite power on caution

Monitor power is on but display shows nothing; no image on screen

Ranked causes

1. Monitor in power save mode (common)
2. Speaker or fan cables disconnected (common)
3. Bad LCD backlight connection (occasional)
4. Bad backlight inverter (occasional)
5. LCD malfunction (occasional)
6. Main board malfunction (rare)

First check

Verify monitor is not in power save mode

Expected: Screen displays active image
Tools: Power button

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

Monitor won't power on with AC but works on battery

Power button does not activate when AC supply connected, but device powers on using battery

Ranked causes

1. AC power cord unplugged or broken (common)
2. Power supply fuse blown (common)
3. Power supply cable malfunction (occasional)
4. Power supply output failure (occasional)
5. AC connector malfunction (occasional)
6. Main PCB failure (occasional)

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

NBP measurements are not displayed

Non-invasive blood pressure readings do not appear on screen

Ranked causes

1. Wrong cuff size or incorrect placement (common)
2. Initial pressure setting is incorrect (common)
3. Air tube bent, twisted, or kinked with air leakage (common)
4. External problem affecting measurement (occasional)
5. NBP pump filter is blocked (occasional)
6. NBP module error (rare)

First check

Verify correct cuff size is selected and applied

Test point: Cuff selection and application site
Expected: Correct cuff size for patient used

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

No NBP readings displayed patient safety

Blood pressure measurement shows no numeric values or dashes

Ranked causes

1. Incorrect cuff size or placement (common)
2. Incorrect initial pressure setting (common)
3. Kinked tube or air leakage (common)
4. External patient or environmental issue (occasional)
5. NBP pump filter blocked (occasional)
6. NBP module error (occasional)

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

No temperature readings

Temperature measurement displays no value or shows out-of-range error

Ranked causes

1. Temperature probe lead disconnected (common)
2. Temperature reading out of range (occasional)
3. Temperature probe malfunction (occasional)
4. Front end malfunction (occasional)
5. Temperature module malfunction (occasional)
6. Main board malfunction (occasional)

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

No temperature readings displayed patient safety

Temperature measurement missing from display; probe not recording or calculating temperature

Ranked causes

1. Probe not connected (common)
2. Temperature reading out of range (common)
3. Probe malfunction (occasional)
4. Front end malfunction (occasional)
5. Temperature module malfunction (occasional)
6. Main board malfunction (rare)

First check

Verify temperature probe is physically connected

Expected: Probe cable securely connected to monitor
Tools: Visual inspection

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

Software upgrade fails or is interrupted patient safety

Upgrade process halted unexpectedly, main board data lost, monitor non-functional after attempted software update

Ranked causes

1. USB flash drive removed during upgrade (occasional)
2. Monitor unplugged during upgrade (occasional)
3. Keys pressed during upgrade (occasional)
4. Software upgrade through USB hub (rare)
5. Invalid software image on USB drive (occasional)
6. Battery not fully charged (common)

First check

Verify battery charge level

Test point: Battery indicator on monitor display
Expected: Fully charged

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

Barcode scanner cannot read barcodes (laser and sound work)

Barcode scanner powers on and responds but fails to read bar codes; laser visible but no decode

Ranked causes

1. Scanner held at wrong distance from barcode (common)
2. System does not recognize barcode format (occasional)
3. Unrecognized format but scanner functional (occasional)
4. System does not recognize scanner (rare)
5. Scanner mechanical failure (rare)

First check

Verify scanner distance from barcode

Expected: Scanner held 6 to 12 inches from barcode
Tools: Ruler, visual alignment

2 more checks with pass and fail actions, 5 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Monitor power and basic operation troubleshooting

Initial diagnostic checks before detailed troubleshooting: power switch status, battery charge, AC connection, display function, and LED indicators

Ranked causes

1. Power switch not enabled (common)
2. Battery not adequately charged (common)
3. AC power not connected or outlet non-functional (common)
4. Display malfunction (occasional)
5. LED indicators not illuminated as expected (occasional)

First check

Verify power switch is turned on

Test point: Power switch on front panel
Expected: Power switch in ON position

4 more checks with pass and fail actions, 5 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

NBP cuff does not inflate

Non-invasive blood pressure cuff fails to inflate during measurement

Ranked causes

1. Air tube or cuff bent or twisted (common)
2. Air leak in tube or cuff (common)
3. NBP module malfunctioned (occasional)
4. NBP pump filter is blocked (occasional)
5. Main board malfunctioned (rare)

First check

Inspect air tube and cuff for kinks or bends

Test point: Air tube and cuff along full length
Expected: Tube and cuff straight with no twists or bends

1 more check with pass and fail actions, 5 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

No SpO2 readings patient safety

Pulse oximetry measurement fails to return values

Ranked causes

1. SpO2 module in learning phase (common)
2. SpO2 sensor failure (common)
3. SpO2 board connection loose (occasional)
4. SpO2 board failure (occasional)
5. Main board failure (occasional)

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

Nurse call does not signal alarms patient safety

Nurse call function fails to trigger alerts for alarm conditions

Ranked causes

1. Minimum Nurse Call Alarm Priority too high (common)
2. Alarms silenced (common)
3. Nurse call connector loose or broken (occasional)
4. Communications board failure (occasional)
5. Main board failure (occasional)

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

Nurse call function does not signal alarm conditions patient safety

Nurse call system does not alert nursing staff to alarm conditions

Ranked causes

1. Minimum Nurse Call Alarm Priority set too high (common)
2. Alarms have been silenced (common)
3. Phono connector is loose or broken (occasional)
4. Communications board malfunctioned (rare)
5. Main board malfunctioned (rare)

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

Recorder does not print

Recorder fails to produce paper output

Ranked causes

1. Recorder is out of paper (common)
2. Recorder door is open (common)
3. System does not recognize the recorder (occasional)
4. Recorder module malfunctioned (occasional)
5. Main board malfunctioned (rare)

First check

Check recorder paper status

Test point: Paper compartment
Expected: Paper loaded and available

1 more check with pass and fail actions, 5 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Software upgrade fails or monitor becomes unresponsive during upgrade patient safety

Monitor stops responding, upgrade process interrupts, or main board data is lost during software update

Ranked causes

1. Monitor unplugged during upgrade (common)
2. USB flash drive removed during upgrade (common)
3. Keys pressed during upgrade (common)
4. USB drive not fully inserted or clamp blocking insertion (occasional)
5. Upgrade interrupted, main board data lost (rare)

First check

Verify AC power connection

Test point: Monitor AC power port
Expected: Monitor connected to AC mains and powered on

6 more checks with pass and fail actions, 5 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

SpO2 measurements are not displayed

Oxygen saturation readings do not appear on monitor screen

Ranked causes

1. SpO2 module in learning phase (common)
2. SpO2 sensor malfunctioned (occasional)
3. SpO2 board connection to front end board faulty (occasional)
4. SpO2 board malfunctioned (rare)
5. Main board malfunctioned (rare)

First check

Monitor SpO2 module learning phase

Test point: SpO2 module status
Expected: Learning phase complete

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

Audible alarms do not sound patient safety

Audio alarms are silent or not producing sound

Ranked causes

1. Audio Pause or Audio Off mode enabled (common)
2. Connection to speaker is faulty (occasional)
3. Speaker malfunctioned (occasional)
4. Main board malfunctioned (rare)

First check

Verify audio alarms are enabled

Test point: Audio settings menu
Expected: Audio mode is not Pause or Off

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

Barcode scanner cannot read barcodes

Laser and sound function but barcode is not decoded

Ranked causes

1. Incorrect scanner distance from barcode (common)
2. Unrecognized barcode format (common)
3. Scanner needs reset (occasional)
5. Scanner mechanical problem (occasional)

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

Barcode scanner does not function (no laser, no sound)

Barcode scanner completely non-functional; no laser beam visible and no response sound

Ranked causes

1. Scanner not connected to USB port (common)
2. Scanner window not clean or blocked (common)
3. System does not recognize scanner (occasional)
4. Scanner mechanical failure (occasional)

First check

Verify scanner USB connection

Expected: Scanner cable securely connected to USB port
Tools: Visual inspection

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

Barcode scanner has no laser or sound

Scanner produces no audible tone and emits no laser beam

Ranked causes

1. Scanner not plugged into USB port (common)
2. Scanner window blocked or dirty (common)
3. System does not recognize scanner (occasional)
4. Scanner mechanical problem (occasional)

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

Monitor displays random or distorted graphics

Display shows corrupted visual content with white background instead of normal image

Ranked causes

1. LCD cable not attached correctly (common)
2. Missing or improper ferrite clamp on LCD signal cable (common)
3. LCD failure (occasional)
4. Main board malfunction (occasional)

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

Monitor does not power on with battery power, works with AC

Monitor cannot be turned on using battery power but powers on normally when using AC power

Ranked causes

1. Battery has lost its charge (common)
2. Battery or connector is loose (common)
3. Battery does not have connection to main board (occasional)
4. Main board has malfunctioned (occasional)

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

Monitor does not respond to navigation wheel or front panel buttons caution

Buttons and navigation wheel do not register input; monitor does not respond to user commands

Ranked causes

1. Bad connection to main board (common)
2. Keypad or navigation wheel broken (occasional)
3. Main board malfunction (rare)
4. Membrane switch assembly malfunction (occasional)

First check

Check all connectors to main board

Expected: All connectors fully seated
Tools: Visual inspection

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

Monitor does not respond to navigation wheel or front panel keys

Navigation wheel and front panel keys do not provide input to the monitor

Ranked causes

1. Main board has faulty connection (occasional)
2. Front panel keypad or navigation wheel broken (common)
3. Main board malfunctioned (rare)
4. Membrane switch assembly malfunctioned (rare)

First check

Check main board connector seating

Test point: Main board connectors
Expected: All connectors fully seated

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

Monitor unresponsive to controls

Navigation wheel or front panel buttons do not control device

Ranked causes

1. Bad connection to main board (common)
2. Broken keypad or navigation wheel (common)
3. Main PCB failure (occasional)
4. Membrane switch assembly malfunction (occasional)

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

Monitor will not power on with battery caution

Monitor powers on with AC power but not on battery

Ranked causes

1. Battery discharged (common)
2. Battery or connector loose (common)
3. Battery board connection failure (occasional)
4. Main board failure (occasional)

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

Monitor will not power on with battery power (AC works) caution

Battery power button does not turn on monitor; AC power operates normally

Ranked causes

1. Battery has lost charge (common)
2. Battery or connector loose (common)
3. Battery not connected to main board (occasional)
4. Main board malfunction (rare)

First check

Check battery charge level

Expected: Battery fully charged
Tools: Battery charger

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

Monitor won't power on with battery but works on AC

Power button does not activate using battery, but device powers on when connected to AC supply

Ranked causes

1. Battery discharged (common)
2. Battery or connector loose (common)
3. Battery board disconnection (occasional)
4. Main PCB failure (occasional)

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

Navigation wheel or keys not responding caution

Monitor does not respond to navigation wheel or front panel key presses

Ranked causes

1. Main board connector loose (common)
2. Keypad or navigation wheel broken (common)
3. Membrane switch malfunction (common)
4. Main board failure (occasional)

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

NBP measurements are unreliable patient safety

Blood pressure readings are inconsistent or inaccurate

Ranked causes

1. Wrong cuff size or incorrect placement (common)
2. Initial pressure setting is incorrect (common)
3. External problem affecting measurement (occasional)
4. NBP module needs calibration (occasional)

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

NBP readings are unreliable or inconsistent patient safety

Blood pressure readings vary significantly or are outside expected range; inconsistent measurement results

Ranked causes

1. Wrong cuff size or incorrect placement (common)
2. Incorrect initial pressure setting (common)
3. External factor or patient movement (occasional)
4. Calibration drift (occasional)

First check

Verify cuff size is appropriate and correctly placed

Expected: Proper cuff size applied to correct limb location
Tools: Visual inspection

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

No NBP readings obtained patient safety

Blood pressure measurement fails to complete; no systolic, diastolic, or MAP reading displayed

Ranked causes

1. Wrong cuff size or incorrect placement (common)
2. Incorrect initial pressure setting (common)
3. Kinked tube or air leakage (occasional)
4. External factor or patient movement (occasional)

First check

Verify cuff size is appropriate and correctly placed

Expected: Proper cuff size applied to correct limb location
Tools: Visual inspection

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

No SpO2 readings displayed patient safety

Pulse oximetry measurement missing from display; SpO2 sensor not recording oxygen saturation

Ranked causes

1. SpO2 module in learning phase (common)
2. SpO2 sensor malfunction (occasional)
3. SpO2 board malfunction (occasional)
4. Main board malfunction (rare)

First check

Check if SpO2 module is in learning phase

Expected: Learning phase complete; SpO2 reading available
Tools: Monitor display

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

Recorder does not print

Recorder fails to produce output on paper

Ranked causes

1. Out of paper (common)
2. Recorder door open (common)
4. Recorder module failure (occasional)
5. Main board failure (occasional)

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

Self test fails patient safety

Monitor resident self test reports FAILED result for one or more test items (Memory, SpO2, NBP, Temperature)

Ranked causes

1. Memory test failure (rare)
2. SpO2 module not detected or error (occasional)
3. NBP module not detected or error (occasional)
4. Temperature module not detected or error (occasional)

First check

Press Self Test button to initiate monitor resident self test

Test point: Self Test button
Expected: Self Test window appears and displays test status

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

Temperature measurements are unreliable patient safety

Temperature readings are inconsistent or inaccurate

Ranked causes

1. Probe malfunctioned (common)
2. Temperature module not calibrated (common)
3. Front end board malfunctioned (occasional)
4. Temperature module malfunctioned (occasional)

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

Temperature readings are unreliable or inconsistent patient safety

Temperature values vary significantly or outside expected range; erratic temperature measurement

Ranked causes

1. Probe malfunction (common)
2. Temperature module accuracy drift (occasional)
3. Front end malfunction (occasional)
4. Temperature module malfunction (occasional)

First check

Perform temperature module accuracy verification

Expected: Module readings match reference thermometer within tolerance
Tools: Reference thermometer, Predictive Temperature Test

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

Unit does not power on with battery power

Monitor turns on with AC power but not with battery power supply

Ranked causes

1. Battery not charged (common)
2. Battery or connector loose (common)
3. Battery board not connected to main board (occasional)
4. Main board malfunctioned (rare)

First check

Verify battery charge status

Test point: Battery charging port
Expected: Battery charged

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

Unreliable NBP readings patient safety

Blood pressure measurements are inconsistent or fluctuate significantly

Ranked causes

1. Incorrect cuff size or placement (common)
2. Incorrect initial pressure setting (common)
3. External patient or environmental issue (occasional)
4. NBP module calibration out of spec (occasional)

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

USB hub does not work

External USB hub connected to monitor is not functioning

Ranked causes

1. USB hub is disconnected from monitor (common)
2. Hub USB ports blocked by dust or dirt (common)
3. USB hub is broken (occasional)
4. LAN (I/O Communications) board broken or not properly connected (rare)

First check

Verify USB plugs are firmly connected

Test point: USB ports on monitor and hub
Expected: All plugs seated firmly in ports

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

Alarms not functioning patient safety

Visual and audio alarms do not trigger during NBP or SpO2 monitoring

Ranked causes

1. NBP alarm disabled or audio muted (common)
2. NBP module malfunction or improper connection (occasional)
3. SpO2 sensor malfunction or improper connection (occasional)

First check

Verify alarms are enabled on monitor

Test point: Audio and alarm mode
Expected: Audio Pause or Audio Off mode not active

4 more checks with pass and fail actions, 5 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Audible alarms do not sound patient safety

Monitor does not produce audible alarm sounds

Ranked causes

1. Audio mode disabled (common)
2. Speaker connection loose (common)
4. Main board failure (occasional)

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

AUDIO FAILED message displayed with flashing red and white box patient safety

Flashing red and white box with AUDIO FAILED message appears on screen

Ranked causes

1. Speaker malfunctioned (common)
2. Connection to speaker is faulty (common)
3. Speaker is faulty (occasional)

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

Barcode scanner does not function

Scanner shows no laser, no sound; cannot read barcodes or function at all.

Ranked causes

1. Scanner not plugged into USB port (common)
2. System does not recognize scanner (occasional)
3. Scanner has mechanical problem (occasional)

First check

Verify scanner physical connection to USB port

Test point: Monitor USB port
Expected: Scanner firmly connected

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

Monitor display shows distorted graphics

Monitor displays random or distorted graphics with white background

Ranked causes

1. LCD signal cable not properly attached (common)
2. LCD failure (occasional)
3. Main board failure (occasional)

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

Monitor displays random or distorted graphics with white background caution

Screen shows garbled graphics, corrupted text, or white background with colored noise

Ranked causes

1. LCD signal cable not attached correctly (common)
2. LCD malfunction (occasional)
3. Main board malfunction (rare)

First check

Reseat LCD signal cable

Expected: Graphics display normally after reseating
Tools: Visual inspection

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

Monitor displays random or distorted graphics with white background

Screen shows corrupted display with random graphics and white background

Ranked causes

1. LCD signal cable not attached correctly (common)
2. LCD malfunctioned (occasional)
3. Main board malfunctioned (rare)

First check

Inspect and reseat LCD signal cable

Test point: LCD signal cable connectors
Expected: Cable fully seated and not damaged

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

Monitor does not power on

No power indication; display inactive; LEDs not lit

Ranked causes

1. Power switch off (common)
2. Battery inadequately charged (common)
3. AC power cord disconnected or outlet non-functional (common)

First check

Verify power switch position

Test point: Main power switch
Expected: 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

Monitor does not respond to controls

Navigation wheel and front panel buttons do not control menu or operation

Ranked causes

1. Bad connection to main board (common)
2. Keypad or navigation wheel broken (occasional)
3. Main board malfunction (occasional)

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

Monitor screen is blank when powered on

Power is on but monitor screen displays nothing

Ranked causes

1. Monitor in Standby mode (common)
2. Backlight LCD connection faulty (occasional)
3. Main board malfunctioned (rare)

First check

Verify Standby mode is not active

Test point: Power button status
Expected: Monitor in normal operating mode

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

NBP cuff does not inflate caution

Blood pressure cuff fails to inflate when measurement initiated; no pressure buildup

Ranked causes

1. Tube or cuff is kinked (common)
3. NBP module malfunction (occasional)
5. Main board malfunction (rare)

First check

Inspect tube and cuff for kinks

Expected: Tube and cuff straight and flexible
Tools: Visual inspection

1 more check with pass and fail actions, 5 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Random or distorted graphics displayed

Monitor shows random patterns or distorted image with white background

Ranked causes

1. LCD cable not properly attached (common)
2. Bad LCD (occasional)
3. Main PCB failure (occasional)

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

Recorder paper is jamming

Recorder paper gets stuck or jams during operation

Ranked causes

1. Paper not installed correctly (common)
2. Wrong type of paper is installed (common)
3. Recorder has mechanical problem (occasional)

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

More symptoms

Software upgrade fails or monitor cannot boot
Software upgrade interrupted or fails
Unit does not power on
Unreliable temperature readings
USB hub does not work
Audio failed alarm displayed
Barcode scanner: Verify scanner accuracy and patient data input
Battery service required message displayed
Monitor boot sequence does not complete
Monitor cannot find valid software image on USB flash drive
Monitor does not power on
Monitor has no power
NBP alarm not functioning
NBP initial pressure too high
NBP pneumatic leakage exceeds limit
Pneumatic leakage test failure
Recorder malfunction
Recorder paper is jamming
Recorder test pattern abnormal
Recorder test pattern abnormal
Recorder test pattern indicates print head or motor fault
SpO2 measurement out of range
SpO2 measurements are unreliable
SpO2 reading outside normal range
SpO2 readings are unreliable or inconsistent
SpO2 readings unreliable
Access Maintenance options in System Diagnostics
Access System Diagnostics menu
Alarms testing
Audio output not heard or incorrect
Audio test not producing tones
Auto Set Alarm Limits button unavailable
Auto Set Alarm Limits button unavailable
Barcode scanner cannot read all patient identification methods
Barcode scanner programming reset
Barcode scanner reads only primary ID method
Battery capacity or type anomaly
Battery charging LED displays only one color
Battery charging LED malfunction
Battery charging LED shows only one color
Battery LED not behaving as expected during test
Battery LED not functioning
Battery LED not showing expected color sequence
Battery LED test failure
Button collapsed or not clicking
Button does not access correct function
Button is collapsed or does not click when pressed
Button press accesses wrong function
Button Test: rotary wheel not responding
Button Test: rotary wheel not responding or drawing red dots
Button Test: rotary wheel small movements not detected
Button Test: system button not responding
Button Test: system icon button not responding
Calibration: Battery reconditioning
Calibration: Internal parts replaced
Calibration: Monitor opened for maintenance
Calibration: NBP accuracy
Calibration: NBP module
Calibration: NBP overpressure valve
Calibration: NBP pneumatic leakage
Calibration: Performance verification after internal parts replacement
Calibration: Performance verification after monitor installation
Calibration: Performance verification after monitor opened
Calibration: Performance verification after NBP module replacement
Calibration: Performance verification after software upgrade
Calibration: Reset serial number after main PCB replacement
Calibration: Safety tests
Calibration: Software upgrade
Calibration: SpO2 accuracy
Calibration: Temperature accuracy
Calibration: Temperature measurement verification
Cannot initialize NBP
Display test pattern not showing or showing incorrectly
Display test patterns not appearing
Enclosure leakage current exceeds safety limit
Failed to stop work thread
Front panel LEDs not lit as expected
Hardware incompatibility or system corruption after software downgrade
Internal parts replaced (non-NBP, non-SpO2)
Key collapsed or unresponsive to press
Key is collapsed or does not click when pressed
Key press activates wrong function
LED test fails or unexpected LED behavior
Loss of monitoring
Memory error
Monitor display inactive or malfunctioning
Monitor display incorrect or absent
Monitor display is blank or incorrect
Monitor does not power on with either AC or battery power
Monitor fails to boot
Monitor freezes during startup
Monitor hangs during startup
Monitor in suspended mode does not respond to power button
Monitor opened for service
Monitor will not power on at all
Monitor will not power on with AC or battery power
Monitor will not power up after reassembly
Navigation wheel or keys not responding
NBP accuracy exceeds tolerance
NBP cycle count requires reset after module replacement
NBP equipment not calibrated
NBP measurement exceeds tolerance
NBP overpressure valve failure
NBP overpressure valve not opening
No startup tone during boot
Nurse call relay does not operate
Nurse call relay: Verify relay contact operation
Only one charging LED color displayed
Opening screen hangs
Opening screen hangs or does not complete
Opening screen or color bar hangs on startup
Power connector fuse replacement needed
Power-on self test
Predictive Temp module test fails during self-test
Predictive temperature measurement error
Pressing a key does not access expected function
Pump filter maintenance or replacement needed
Recorder prints incorrectly
Reset tracked component usage parameters
Reset tracked parameter
Rotary wheel or button not responding
Safety test: Enclosure leakage current
Safety test: Ground integrity
Safety test: Patient leakage current
Self test fails for module
Self test fails on NBP module
Self test in progress
Software configuration settings lost after upgrade
Software downgrade attempted
Software upgrade completed
Speaker and fan cable connections failing
Speaker not producing audio
System Admin Menu locks after use
System exception in alarming software
System settings and patient records lost after software upgrade
Temperature measurement out of range
Tracked parameters need resetting after part replacement
Tympanic temperature reading is unusually high
Tympanic temperature reading is unusually low
Unable to access System Admin Menu
Unit does not power on with AC or battery power
Unreliable SpO2 readings
USB flash drive does not fit in USB port
Visual damage or obstruction present
Visual inspection

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

Error codes

Code	Meaning	Trigger	Severity
`1025`	System Error (1025)	Could not load ResourceDLL.dll	critical
`1025`	System Error (1025)	Could not load ResourceDLL.dll	error
`1026`	System Error (1026)	Could not load data from flash	error
`1026`	System Error (1026)	Could not load data from flash	critical
`1027`	System Error (1027)	Could not start front-end	critical
`1027`	System Error (1027)	Could not start the front end	error
`1028`	System Error (1028)	Could not stop the front end	error
`1028`	System Error (1028)	Could not stop front-end	critical
`1029`	System Error (1029)	Could not allocate enough memory	critical
`1029`	System Error (1029)	Could not allocate enough memory	error
`1030`	System Error (1030)	An error occurred when the system shut down front end devices	error
`1030`	System Error (1030)	Error during system shutdown of front end devices	critical
`1031`	System Error (1031)	Monitoring and watchdog thread could not initialize	critical
`1031`	System Error (1031)	The monitoring and watchdog thread could not initialize	error
`1032`	System Error (1032)	Could not open audio files	error
`1032`	System Error (1032)	Could not open audio files	critical
`1033`	System Error (1033)	Unspecified error	critical
`1033`	System Error (1033)	Unspecified error	error
`1034`	System Error (1034)	Failed to load product info	error
`1034`	System Error (1034)	Failed to load product info	critical
`1035`	System Error (1035)	Cannot initialize front-end manager	critical
`1035`	System Error (1035)	Cannot initialize the front-end manager	error
`1036`	System Error (1036)	Failed to start work thread	error
`1036`	System Error (1036)	Failed to start work thread	critical
`1037`	System Error (1037)	Cannot start polling thread	critical
`1037`	System Error (1037)	Cannot start polling thread	error
`1039`	System Error (1039)	Cannot get front-end version	error
`1039`	System Error (1039)	Cannot get front-end version	critical
`1042`	System Error (1042)	Failed to start up network driver	critical
`1042`	System Error (1042)	Failed to start up network driver	error
`1043`	System Error (1043)	Work thread timed out	error
`1043`	System Error (1043)	Work thread timed out	critical
`1043 (1)`	System Error (1)	Front end software problem	critical
`1043 (2)`	System Error (2)	Alarm software problem	critical
`1044`	System Error (1044)	Front end software error	critical
`1044`	System Error (1044)	Front end software error	error
`1045`	System Error (1045)	Printing software error	error
`1045`	System Error (1045)	Printing software error	critical
`1047`	System Error (1047)	Monitoring software error	critical
`1047`	System Error (1047)	Monitoring software error	error
`1048`	System Error (1048)	An exception was detected in the alarming software	error
`1048`	System error - exception in alarming software	Exception detected in alarming software	error
`1048`	System Error (1048)	Exception detected in alarming software	critical
`1050`	System Error (1050)	Failed to stop work thread	critical
`1050`	System error - failed to stop work thread	Failed to stop work thread	error
`1050`	System Error (1050)	Failed to stop work thread	error
`1051`	System Error (1051)	Cannot initialize NBP	error
`1051`	System Error (1051)	Cannot initialize NBP	critical
`1052`	System Error (1052)	Memory error	critical
`1052`	System Error	Memory error detected during operation	critical
`1053`	System Error	Loss of monitoring signal detected	info
`1053`	System error - loss of monitoring	Loss of monitoring capability	info
`257`	System Error	Battery charger power failure	error
`257`	System Error	Battery charger power failure	error
`257`	System Error - Battery charger power failure	Battery charger power failure	error
`261`	Battery is overcharged	charging circuit fails to regulate battery voltage; battery remains connected to charger beyond full charge state	warning
`261`	System Error - Battery is overcharged	Battery is overcharged	error
`261`	System Error	Battery is overcharged	error
`264`	System Error	Battery is over temperature	error
`264`	System Error	Battery over temperature condition detected	error
`264`	System Error - Battery over temperature	Battery over temperature	warning
`264 temp`	System Error	Battery temperature exceeds safe operating limit	error
`264 temp_value`	Battery is over temperature	battery temperature exceeds safe operating range during charging or discharge	warning
`817`	FPGA FIFO Overrun	NBP software problem detected during operation	error
`817`	FPGA FIFO Overrun	NBP software error	info
`818 (101)`	NBP Equip Malfunc (101)	Task overrun	error
`818 (101)`	NBP Equip Malfunc (101)	Task overrun in NBP equipment	error
`818 (102)`	NBP Equip Malfunc (102)	Interrupt stack overwritten	error
`818 (102)`	NBP Equip Malfunc (102)	Interrupt stack overwritten	error
`818 (103)`	NBP Equip Malfunc (103)	User stack overwritten	error
`818 (103)`	NBP Equip Malfunc (103)	User stack overwritten	error
`818 (104)`	NBP Equip Malfunc (104)	Data validity check failed	error
`818 (104)`	NBP Equip Malfunc (104)	Data validity check failed	error
`818 (106)`	NBP Equip Malfunc (106)	Unable to write init flag data to non-volatile memory	error
`818 (106)`	NBP Equip Malfunc (106)	Unable to write init flag data to non-volatile memory	error
`818 (107)`	NBP Equip Malfunc (107)	Unable to verify init flag data written to non-volatile memory	error
`818 (107)`	NBP Equip Malfunc (107)	Unable to verify init flag data in non-volatile memory	error
`818 (109)`	NBP Equip Malfunc (109)	Unable to write NBP configuration data	error
`818 (109)`	NBP Equip Malfunc (109)	Unable to write NBP configuration data to non-volatile memory	error
`818 (110)`	NBP Equip Malfunc (110)	Unable to write NBP configuration data to non-volatile memory	error
`818 (110)`	NBP Equip Malfunc (110)	Unable to write NBP configuration data	error
`818 (111)`	NBP Equip Malfunc (111)	Calibration data checksum error	error
`818 (111)`	NBP Equip Malfunc (111)	Calibration data checksum error detected	error
`818 (112)`	NBP Equip Malfunc (112)	Unable to write calibration data to non-volatile memory	error
`818 (112)`	NBP Equip Malfunc (112)	Unable to write calibration data	error
`818 (113)`	NBP Equip Malfunc (113)	Unable to verify calibration data	error
`818 (113)`	NBP Equip Malfunc (113)	Unable to verify calibration data written to non-volatile memory	error
`818 (114)`	NBP Equip Malfunc (114)	Error log checksum error detected	error
`818 (114)`	NBP Equip Malfunc (114)	Error log checksum error	error
`818 (115)`	NBP Equip Malfunc (115)	Unable to write error log to non-volatile memory	error
`818 (115)`	NBP Equip Malfunc (115)	Unable to write error log to non-volatile memory	error
`818 (116)`	NBP Equip Malfunc (116)	Unable to verify error log data written to non-volatile memory	error
`818 (116)`	NBP Equip Malfunc (116)	Unable to verify error log data	error
`818 (117)`	NBP Equip Malfunc (117)	Inflation cycle count and runtime data checksum error	error
`818 (117)`	NBP Equip Malfunc (117)	Inflation cycle count and runtime data checksum error	error
`818 (118)`	NBP Equip Malfunc (118)	Unable to write inflation cycle count and runtime data to non-volatile memory	error
`818 (118)`	NBP Equip Malfunc (118)	Unable to write inflation cycle count data	error
`818 (119)`	NBP Equip Malfunc (119)	Unable to verify inflation cycle count data	error
`818 (119)`	NBP Equip Malfunc (119)	Unable to verify inflation cycle count and runtime data written to non-volatile memory	error
`818 (120)`	NBP Equip Malfunc (120)	New message sent to host while previous message not finished	error
`818 (120)`	NBP Equip Malfunc (120)	New message sent while previous message not finished	error
`818 (121)`	NBP Equip Malfunc (121)	Pressure value from second sensor not available	error
`818 (121)`	NBP Equip Malfunc (121)	Pressure value from second pressure sensor not available	error
`818 (122)`	NBP Equip Malfunc (122)	5-volt supply voltage value is too high or low	error
`818 (122)`	NBP Equip Malfunc (122)	5-volt supply voltage too high or low	error
`818 (123)`	NBP Equip Malfunc (123)	Error from 5-volt regulator	error
`818 (123)`	NBP Equip Malfunc (123)	Error from the 5-volt regulator	error
`818 (124)`	NBP Equip Malfunc (124)	12-volt supply voltage value is too high or low	error
`818 (124)`	NBP Equip Malfunc (124)	12-volt supply voltage too high or low	error
`818 (128)`	NBP Equip Malfunc (128)	Pressure sensor 1 offset out of range	error
`818 (128)`	NBP Equip Malfunc (128)	Offset of pressure sensor 1 is out of range	error
`818 (129)`	NBP Equip Malfunc (129)	Offset of pressure sensor 2 is out of range	error
`818 (129)`	NBP Equip Malfunc (129)	Pressure sensor 2 offset out of range	error
`818 (130)`	NBP Equip Malfunc (130)	Pressure sensor 2 test signal response out of range	error
`818 (130)`	NBP Equip Malfunc (130)	Response of pressure sensor 2 to test signal is out of range	error
`818 (131)`	NBP Equip Malfunc (131)	Difference between two pressure channels is too large	error
`818 (131)`	NBP Equip Malfunc (131)	Difference between two pressure channels too large	error
`818 (132)`	NBP Equip Malfunc (132)	Valve activated for too long	error
`818 (132)`	NBP Equip Malfunc (132)	One of the two valves was activated for too long	error
`818 (133)`	NBP Equip Malfunc (133)	CRC mismatch in calibration data	error
`818 (133)`	NBP Equip Malfunc (133)	CRC mismatch in calibration data	error
`818 (134)`	NBP Equip Malfunc (134)	CRC mismatch in error log data	error
`818 (134)`	NBP Equip Malfunc (134)	CRC mismatch in error log data	error
`818 (135)`	NBP Equip Malfunc (135)	CRC mismatch in inflation cycle count and runtime data	error
`818 (135)`	NBP Equip Malfunc (135)	CRC mismatch in inflation cycle count data	error
`818 (136)`	NBP Equip Malfunc (136)	Pneumatic safety switch malfunction	error
`818 (136)`	NBP Equip Malfunc (136)	Pneumatic safety switch is defective	error
`818 (137)`	NBP Equip Malfunc (137)	Valve 2 is defective or blocked	error
`818 (137)`	NBP Equip Malfunc (137)	Valve 2 is defective or blocked	error
`818 (141)`	NBP Equip Malfunc (141)	Inflation time exceeded for selected patient type	warning
`818 (141)`	NBP Equip Malfunc (141)	Inflation time for selected patient type exceeded	warning
`818 (15)`	NBP Equip Malfunc (15)	Abnormal unrecoverable system errors with internal firmware	error
`818 (15)`	NBP Equip Malfunc (15) - NBP abnormal, unrecoverable system errors with internal firmware	NBP abnormal, unrecoverable system errors with internal firmware	critical
`818 (15)`	NBP Equip Malfunc (15)	NBP abnormal unrecoverable system errors	error
`818 (199)`	NBP Equipment Malfunction	No data from NBP block	error
`818 (199)`	NBP Equip Malfunc (199)	No data from NBP block	error
`818 (2)`	NBP Equip Malfunc (2)	NBP power-on self test failed	error
`818 (2)`	NBP Equip Malfunc (2) - A/D converter inoperative or pressure transducer offset too large	NBP power-on self test failed; A/D converter inoperative or pressure transducer offset too large	error
`818 (2)`	NBP Equip Malfunc (2)	NBP power-on self test failed	error
`818 (25)`	NBP Equip Malfunc (25)	NBP hardware malfunction with no data	error
`818 (25)`	NBP Equip Malfunc (25) - NBP hardware has malfunctioned because of no data	NBP hardware has malfunctioned because of no data	error
`818 (25)`	NBP Equip Malfunc (25)	NBP hardware malfunction due to no data	error
`819`	NBP Equipment Malfunction - Not Calibrated	NBP unit not calibrated	error
`819`	NBP Equipment Malfunction - Not Calibrated	NBP module not calibrated	error
`819 (127)`	NBP Equipment Malfunction	NBP module not calibrated	error
`819 (127)`	NBP Equip Malfunc (127)	NBP module is not calibrated	error
`819 (138)`	NBP Hose Blocked	Problem in pneumatic system	error
`819 (139)`	NBP Air Leak	Air leak or valve defect in NBP system	error
`820 (138)`	NBP Hose Blocked	Problem in pneumatic system	error
`821 (139)`	NBP Air Leak	Air leak or valve defect in pneumatic system	error
`833`	Temperature Probe Error	Temperature probe detection or malfunction	error
`833 (1)`	SpO2 Equip Malfunc (1) - SpO2 ROM checksum error	SpO2 ROM checksum error	error
`833 (1)`	SpO2 Equipment Malfunction	SpO2 ROM checksum error	error
`833 (10)`	SpO2 Equipment Malfunction	SpO2 host communication error	error
`833 (10)`	SpO2 Equip Malfunc (10) - SpO2 host communication error	SpO2 host communication error	error
`833 (2)`	SpO2 Equip Malfunc (2) - SpO2 RAM test error	SpO2 RAM test error	error
`833 (2)`	SpO2 Equipment Malfunction	SpO2 RAM test error	error
`833 (20)`	SpO2 Equipment Malfunction	SpO2 hardware defect	error
`833 (20)`	SpO2 Equip Malfunc (20) - SpO2 hardware defect	SpO2 hardware defect	error
`833 (4)`	SpO2 Equipment Malfunction - Analog Signal Path Self Test Failed	SpO2 analog signal path self test failed	error
`833 (4)`	SpO2 Equip Malfunc (4) - SpO2 analog signal path self test failed	SpO2 analog signal path self test failed	error
`833 (4)`	SpO2 Equipment Malfunction	SpO2 analog signal path self test failed	error
`833 (40)`	SpO2 Equipment Malfunction	SpO2 non-volatile memory corrupted	error
`833 (40)`	SpO2 Equip Malfunc (40) - SpO2 non-volatile memory corrupted	SpO2 non-volatile memory corrupted	error
`833 (40)`	SpO2 Equipment Malfunction - Non-Volatile Memory Corrupted	SpO2 non-volatile memory corruption detected	error
`833 (6)`	SpO2 Equip Malfunc (6) - SpO2 self test timeout	SpO2 self test timeout	error
`833 (6)`	SpO2 Equipment Malfunction	SpO2 self test timeout	error
`833 (8)`	SpO2 Equipment Malfunction	SpO2 internal DSP communication error	error
`833 (8)`	SpO2 Equip Malfunc (8) - SpO2 internal DSP communication error	SpO2 internal DSP communication error	error
`834`	SpO2 Sensor Malfunc - Malfunction of SpO2 sensor or sensor cable	Malfunction of the SpO2 sensor or sensor cable	warning
`834`	SpO2 Sensor Malfunction	Malfunction of SpO2 sensor or sensor cable	warning
`835`	FPGA FIFO Overrun	SpO2 software error	info
`835`	FPGA FIFO Overrun	SpO2 software problem	error
`836`	SpO2 Communication Error	SpO2 communication error between modules	error
`836`	SpO2 Communication Error	SpO2 communication error	warning
`837`	SpO2 Error	No data from SpO2, front end will reset	error
`837`	SpO2 Error - No data from SpO2	No data from SpO2	error
`865`	FPGA FIFO Overrun	Temperature software problem	error
`865`	FPGA FIFO Overrun	Temperature software error	info
`866`	SpO2 Equipment Malfunction	SpO2 module detection or communication failure	error
`866 (21)`	Temp Probe Error (21) - Probe operating in temperature above 112°F/43.3°C	Probe is operating in temperature conditions above 112°F/43.3°C; probe tip is defective with heater too close to thermistor	warning
`866 (21)`	Temperature Probe Error	Probe operating at temperature above 112°F/43.3°C or probe tip defective	unknown
`866 (21)`	Temperature Probe Error	Probe operating above 43.3°C (112°F)	error
`866 (22)`	Temperature Probe Error	Excessive heater energy	warning
`866 (22)`	Temp Probe Error - Excessive Heater Energy	Excessive heater energy detected	error
`866 (22)`	Temp Probe Error (22) - Excessive heater energy	Excessive heater energy; heater not working or took too long to predict	warning
`866 (32)`	Temp Probe Error (32) - Thermistor pulled away or heater broken	Thermistor pulled away from the tip or heater broken	warning
`866 (32)`	Temp Probe Error (32)	Thermistor pulled away from tip or heater broken	warning
`866 (32)`	Temperature Probe Error	Thermistor pulled away from tip or heater broken	warning
`866 (33)`	Temperature Probe Error	Probe not responsive	warning
`866 (33)`	Temp Probe Error (33)	Probe not connected at startup or not responsive	error
`866 (33)`	Temp Probe Error (33) - Probe not responsive or not calibrated	Probe not responsive; probe not characterized/calibrated	warning
`866 (34)`	Temp Probe Error (34)	Probe not characterized or calibrated	error
`866 (34)`	Temp Probe Error (34) - Probe not characterized or calibrated	Probe not characterized/calibrated	warning
`866 (34)`	Temperature Probe Error	Probe not characterized or calibrated	warning
`866 (45)`	Temperature Probe Error	Measurement below allowable temperature values	warning
`866 (45)`	Temp Probe Error (45)	Measurement below allowable temperature values	error
`866 (45)`	Temp Probe Error (45) - Measurement below allowable temperature values	Measurement below allowable temperature values and far below low ambient limits	warning
`866 (46)`	Temp Probe Error (46)	Measurement above allowable temperature values	error
`866 (46)`	Temp Probe Error (46) - Measurement above allowable temperature values	Measurement above allowable temperature values and far above high ambient and/or patient limits	warning
`866 (46)`	Temperature Probe Error	Measurement above allowable temperature values	warning
`866 (52)`	Temperature Probe Error	Probe not characterized or calibrated	error
`866 (52)`	Temp Probe Error - Not Characterized	Probe not characterized or calibrated	error
`866 (52)`	Temp Probe Error (52) - Probe not characterized or calibrated	Probe not characterized/calibrated	warning
`866 (63)`	Temp Probe Error (63)	Probe well missing or not installed properly	error
`866 (63)`	Temp Probe Error (63) - Probe well missing or not installed properly	Probe well missing or not installed properly	warning
`866 (63)`	Temperature Probe Error	Probe well missing or not installed properly	error
`866 (70)`	Temperature Probe Error	Error reading probe EEPROM	error
`866 (70)`	Temp Probe Error (70) - Error reading the probe's EEPROM	Error reading the probe's EEPROM	warning
`866 (70)`	Temp Probe Error - EEPROM Read Error	Error reading probe's EEPROM	error
`866 (75)`	Temp Probe Error (75) - Error reading probe EEPROM or probe not factory tested	Error reading the probe's EEPROM correctly or the probe was not factory tested	warning
`866 (75)`	Temp Probe Error (75)	Problem reading probe EEPROM correctly or probe not factory tested	error
`866 (75)`	Temperature Probe Error	Error reading probe EEPROM or probe not factory tested	error
`866 (78)`	Temperature Module Malfunction	Probe NVM error detection mechanism detected error	error
`866 (78)`	Temp Module Malfunc (78) - Probe's non-volatile error detection mechanism detected error	The Probe's non-volatile error detection mechanism detected an error	error
`866 (78)`	Temp Module Malfunction - Probe Non-Volatile Error	Probe non-volatile error detection mechanism triggered	error
`866 (79)`	Temp Module Malfunction - Error Log Memory Error	Module non-volatile error log memory error detected	error
`866 (79)`	Temp Module Malfunc (79) - Module's non-volatile error log memory error detection mechanism detected error	The module's non-volatile error log memory error detection mechanism detected an error	error
`866 (79)`	Temperature Module Malfunction	Module NVM error log memory error detected	error
`866 (80)`	Temperature Probe Error	Software trying to turn off probe heater but heater still on	error
`866 (80)`	Temp Probe Error - Heater Stuck On	Software unable to turn off probe heater feedback still on	error
`866 (80)`	Temp Probe Error (80) - Software trying to turn off heater but heater still on	Software is trying to turn off the probe heater, but the heater feedback signal says it is still on	error
`866 (81)`	Temp Probe Error - Heater Stuck Off	Software unable to turn on probe heater feedback still off	error
`866 (81)`	Temp Probe Error (81) - Software trying to turn on heater but heater still off	Software is trying to turn on the probe heater, but the heater feedback signal says it is still off	error
`866 (81)`	Temperature Probe Error	Software trying to turn on probe heater but heater still off	error
`867 (101)`	Temp Module Malfunc (101)	Tympanic temperature module checksum error	error
`867 (102)`	Temp Module Malfunc (102)	Tympanic temperature module calibration error	error
`867 (103)`	Temp Module Malfunc (103)	Ambient temperature is below the minimum operating temperature limit	warning
`867 (104)`	Temp Module Malfunc (104)	Ambient temperature is above the maximum operating temperature limit	warning
`867 (24)`	Temperature Module Malfunction	Ambient temperature too high	warning
`867 (24)`	Temp Module Malfunc (24) - Ambient temperature too high	Ambient temperature too high	warning
`867 (25)`	Temp Module Malfunction - Ambient Temperature Too Low	Ambient temperature below minimum operating range	warning
`867 (25)`	Temperature Module Malfunction	Ambient temperature too low	warning
`867 (27)`	Temperature Module Malfunction	Battery or power supply voltage exceeds maximum	error
`867 (27)`	Temp Module Malfunction - Voltage Exceeds Maximum	Battery or power supply voltage exceeds maximum	error
`867 (28)`	Temperature Module Malfunction	Battery or power supply voltage below minimum	error
`867 (28)`	Temp Module Malfunction - Voltage Below Minimum	Battery or power supply voltage below minimum	error
`867 (47)`	Temperature Module Malfunction	Internal calibration resistor RCAL damaged	error
`867 (47)`	Temp Module Malfunc (47)	Internal calibration resistor (RCAL) damaged	error
`867 (47)`	Temp Module Malfunction - Internal Calibration Resistor RCAL Damaged	Internal calibration resistor RCAL damaged or defective	error
`867 (48)`	Temp Module Malfunction - Calibration Resistor RCAL Damaged	Internal calibration resistor RCAL damaged	error
`867 (48)`	Temperature Module Malfunction	Internal calibration resistor RCAL damaged	error
`867 (49)`	Temperature Module Malfunction	Internal circuit validation resistor PTB damaged	error
`867 (49)`	Temp Module Malfunction - Validation Resistor PTB Damaged	Internal circuit validation resistor PTB damaged	error
`867 (50)`	Temp Module Malfunction - Validation Resistor PTB Damaged	Internal circuit validation resistor PTB damaged	error
`867 (50)`	Temperature Module Malfunction	Internal circuit validation resistor PTB damaged	error
`867 (51)`	Temperature Module Malfunction	A/D measurement timeout	error
`867 (51)`	Temp Module Malfunction - A/D Measurement Timeout	A/D converter measurement timed out	error
`867 (59)`	Temp Module Malfunction - Voltage Below Maximum	Battery or power supply voltage below maximum	error
`867 (59)`	Temperature Module Malfunction	Battery or power supply voltage below maximum	error
`867 (60)`	Temperature Module Malfunction	Battery or power supply voltage exceeds minimum	error
`867 (60)`	Temp Module Malfunction - Voltage Exceeds Minimum	Battery or power supply voltage exceeds minimum	error
`867 (61)`	Temp Module Malfunction - Reference Voltage Unstable	Reference voltage circuit under voltage or unstable	error
`867 (61)`	Temperature Module Malfunction	Reference voltage circuit under voltage or unstable	error
`867 (62)`	Temperature Module Malfunction	Module not calibrated	error
`867 (62)`	Temp Module Malfunction - Not Calibrated	Temperature module not calibrated	error
`867 (65)`	Temp Module Malfunction - EEPROM Write Error	Error saving to module's EEPROM	error
`867 (65)`	Temp Module Malfunc (65)	Error saving to the module's EEPROM	error
`867 (66)`	Temp Module Malfunc (66)	Module's non-volatile calibration memory error detection mechanism detected an error	error
`867 (66)`	Temp Module Malfunction - Non-Volatile Calibration Error	Non-volatile calibration memory error detected	error
`867 (67)`	Temp Module Malfunc (67)	Error reading/writing to the module's EEPROM	error
`867 (67)`	Temp Module Malfunc (67)	Error reading/writing to the module's EEPROM	error
`867 (68)`	Temp Module Malfunc (68)	Error reading/writing to the module's EEPROM	error
`867 (68)`	Temp Module Malfunc (68)	Error reading/writing to the module's EEPROM	error
`867 (69)`	Temp Module Malfunc (69)	Error reading/writing to the module's EEPROM	error
`867 (69)`	Temp Module Malfunc (69)	Error reading/writing to the module's EEPROM	error
`867 (74)`	Temp Module Malfunc (74)	Internal error during module EEPROM initialization	error
`867 (74)`	Temp Module Malfunc (74)	Internal error during EEPROM initialization	error
`867 (80)`	Temp Module Malfunc (80)	Software trying to turn off probe heater but feedback signal shows still on	error
`867 (81)`	Temp Module Malfunc (81)	Software trying to turn on probe heater but feedback signal shows still off	error
`867 (82)`	Temp Module Malfunc (82)	Signal HTR_Q on, HTRC off, but voltage still present	error
`867 (82)`	Temp Module Malfunc (82)	Signal HTR_Q is on and signal HTRC is off, but still have voltage	error
`867 (83)`	Temp Module Malfunc (83)	Signal HTR_Q is tri-stated with signal HTRC enabled, and has heater power	error
`867 (83)`	Temp Module Malfunc (83)	Signal HTR_Q tri-stated with HTRC enabled and heater power present	error
`867 (84)`	Temp Module Malfunc (84)	Signal Q&C on with insufficient heater voltage	error
`867 (84)`	Temp Module Malfunc (84)	Signal Q&C is turned on and the heater voltage is not high enough	error
`867 (85)`	Temp Module Malfunc (85)	Heater hardware fail-safe should have turned off, but did not	error
`867 (85)`	Temp Module Malfunc (85)	Heater fail-safe did not turn off as expected	error
`868`	Temp Error. The front end will now reset itself.	Temperature measurement failure or module communication error	error
`868`	Temperature error	No data from temperature module	error
`868`	Temp Error. The front end will now reset itself.	No data from temperature sensor	error
`881`	Speaker Malfunc (881)	The speaker failed	error
`881`	Speaker Malfunc (881)	Speaker hardware failure	warning
`Err3`	Load beam cable disconnection or defect	One or more load beam cables disconnected or damaged	error
`Upgrade interrupted - Main board data lost`	Software upgrade process was interrupted; main board memory corrupted and cannot be recovered	USB flash drive removed, monitor unplugged, or keys pressed during upgrade process	critical
`Upgrade Software window displays no valid image`	USB flash drive does not contain valid software upgrade image or image is corrupted	After inserting USB flash drive and selecting Upgrade Software from System Admin Menu, no software version information appears	error

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