Ultrasound systems

GE Healthcare M7: troubleshooting and error codes

The ServiceForge knowledge base holds 94 documented symptoms for the GE Healthcare M7, with 182 ranked causes, 148 diagnostic checks with test points and expected values, and 15 error codes. Each symptom below shows its causes and the first check; the rest is one connection away. Connect ServiceForge to your AI

Symptoms

Unit does not power on from batteries

System fails to start when powered by batteries instead of adapter; no output voltage or inability to complete power-up sequence

Ranked causes

1. Boards and cards not properly connected (common)
2. Battery voltage (BATA+/BATB+) absent or low (common)
4. +12V main power board output faulty (occasional)
5. 3V3STB rail abnormal (occasional)
6. PHV output or load end faulty (occasional)
7. ±95V output circuit faulty (occasional)
8. 5VSTB_CPU output faulty (occasional)
9. +3.6V or auxiliary power rail abnormal (occasional)
10. -5V/-12V output faulty (occasional)
11. +5V main power board output faulty (occasional)

First check

Verify boards and cards are properly connected

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

9 more checks with pass and fail actions, 11 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

All control panel indicators off, no system response caution

Adapter output indicator normal; all control panel indicators are off; no response when PWR_BTN pressed with adapter or batteries; system does not start

Ranked causes

1. 3V3STB of power module abnormal (occasional)
2. 3V3STB of main board short-circuited (rare)
3. 5VSTB of power module abnormal (occasional)
4. 5VSTB of main board short-circuited (rare)
5. Power management FPGA damaged (common)
6. 5VSTB of industrial control board short-circuited (rare)

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

Mains on Applied Part Leakage test fails patient safety

Leakage current measurement on applied parts (ECG/PCG probes) exceeds acceptable limits during safety inspection

Ranked causes

1. Defective applied part (probe/transducer) (common)
2. Defective ECG/PCG module (occasional)
3. Power Unit defect (occasional)
4. Wiring damage or poor connections (common)
5. Wall outlet grounding or configuration issue (occasional)
6. Console or probe connector fault (rare)

First check

Visually inspect applied parts for physical damage

Test point: Applied part terminals on 601PRO
Expected: No cracks, corrosion, or broken contacts

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

Noise image in non-frozen mode

Transducer connects and is identified but displays only noise in non-frozen imaging mode

Ranked causes

1. Programmed power transmission board short-circuited (rare)
2. High-voltage output module abnormal (common)
3. High-voltage switch or power supply short-circuited (rare)
4. Power module +/-5V output abnormal (rare)
5. High-voltage isolation malfunction (rare)
6. Transducer damaged (rare)

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

ECG waveform displayed as line or abnormal patient safety

When ECG function is opened, waveform display is flat line or shows abnormal pattern instead of normal ECG trace.

Ranked causes

1. ECG lead abnormal or disconnected (common)
2. Connection between main unit and ECG module abnormal (common)
3. ECG board power failure (occasional)
4. ECG program corrupted or abnormal (rare)
5. ECG board hardware failure (rare)

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

LCD display blank, other video outputs normal caution

Adapter indicator, electricity indicator, and Power_BTN backlight all normal; Power_BTN backlight first blinks then stays on with beep; fan runs normally; control panel backlight normal; nothing displayed on LCD; VGA, DVI, Video, Svideo display normally; Doppler available; short press PWR_BTN does not power off; LCD backlight visible in dark room

Ranked causes

1. 3.3V power supply to LCD of main board abnormal (common)
2. LVDS of main board abnormal (common)
3. Backlight of LCD is off (common)
4. LCD is abnormal (rare)
5. Inverter of LCD is abnormal (rare)

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

Patient Auxiliary Current test fails patient safety

Patient auxiliary leakage current measurement between ECG jacks exceeds acceptable limits during safety inspection

Ranked causes

1. Defective AC cable (common)
2. Defective enclosure or cover (occasional)
3. Wiring damage or poor connections (common)
4. Wall outlet grounding or configuration issue (occasional)
5. Console or probe connector fault (rare)

First check

Visually inspect AC cable for damage

Test point: AC cable from outlet to DUT
Expected: No cuts, tears, loose connectors, or exposed wires

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

Windows cannot identify keyboard board

Operating system fails to recognize keyboard board during connection; power to board and cards is normal, software and logic are correctly programmed.

Ranked causes

1. Keyboard board driver not installed (common)
2. Main board connection wire damaged (occasional)
3. USB common-mode inductor L8 open circuit (rare)
4. Anti-static chip U5 damaged (rare)
5. USB interface chip U4 damaged (rare)

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

Audio test failed

System self-diagnosis audio test produces no sound from left or right speaker during self-test procedure, or user reports inability to hear expected 'Ding' tone

Ranked causes

1. Audio chip U85 malfunction (unknown)
2. Power amplification circuit failure (unknown)
3. Speaker or buzzer failure (unknown)
4. Interface connection issue (unknown)

First check

Run audio test from self-diagnosis menu

Test point: System self-diagnosis audio test function
Expected: 'Ding' sound plays from left speaker

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

Power button backlight blinks then stays on, all displays off, fan running caution

Adapter indicator, electricity indicator, and Power_BTN backlight all normal when off; pressing Power_BTN backlight first blinks then lights continuously; control panel backlight off; no keyboard sound; fan working; LCD, VGA, DVI, Video, S-video show nothing

Ranked causes

1. POWER_ON# of main board abnormal (common)
2. 12V output of power module abnormal (occasional)
3. 12V of main board short-circuited (rare)
4. 12V of industrial control board short-circuited (rare)

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

USB port not available

USB device not recognized or cannot communicate with system

Ranked causes

1. USB device defective (common)
2. USB port on main board defective (occasional)
3. USB port on IO extend board defective (occasional)
4. CPU module defective (rare)

First check

Verify USB device power indicator

Test point: USB device power LED
Expected: Power indicator is ON

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

VGA interface test fails

VGA Interface Test Dialog Box shows FAIL result in Messages list box

Ranked causes

1. Main board U75 connector defective or poorly welded (unknown)
2. Main board U80 connector defective or poorly welded (unknown)
3. IO extend board J1 connector defective or poorly welded (unknown)
4. IO extend board J10 connector defective or poorly welded (unknown)

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

4D transducer does not perform mechanical scan high voltage

Motor not working when switched to 4D mode; electric motor is not working

Ranked causes

1. -12V output of power module unavailable (common)
2. ±7V~11.5V programmed power unavailable from 4D driving board (common)
3. 4D driving signal unavailable (occasional)

First check

Measure -12V output of power module

Test point: Power module output
Expected: -12V present
Tools: DVM

3 more checks with pass and fail actions, 9 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Black area in image with self-diagnosis failed

Black region or dropout appears in ultrasound image when front-end channel self-test fails

Ranked causes

1. Poor contact between transmission and main board (common)
2. Transmission board channel damage (occasional)
3. High-voltage isolation failure (occasional)

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

ECG board corresponding function unavailable patient safety

ECG module function is not accessible or operational.

Ranked causes

1. Connection between main unit and ECG module abnormal (common)
2. Power supply to ECG board failed (occasional)
3. Serial port communication abnormal (rare)

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

FPGA LED D1 not illuminated or blinking

LED D1 of FPGA board not lit or blinking intermittently while D175/D176 indicators normal

Ranked causes

1. FPGA configuration files not programmed (common)
2. FPGA core voltage abnormal (occasional)
3. FLASH memory corrupted (rare)

First check

Measure FPGA core voltage

Test point: TP17
Expected: 1.2V
Tools: DVM

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

Power button backlight keeps blinking, all displays off, fan running caution

Adapter indicator, electricity indicator, and Power_BTN backlight all normal when off; pressing PWR_BTN backlight keeps blinking; control panel backlight off; no keyboard sound; fan working; LCD, VGA, DVI, Video, Svideo show nothing

Ranked causes

1. Main board cannot send power-on PWR_BTN to industrial control board (common)
2. Industrial control board cannot respond PWR_BTN signal normally (rare)
3. Main board cannot receive S3# signal from industrial control board (common)

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

S-video output not displaying correctly

Self-diagnosis test patterns (NTSC or PAL formatted images) do not appear on the monitor or appear incorrectly during S-video output verification

Ranked causes

1. S-video output signal abnormal (unknown)
2. S-video output signal abnormal (lower resolution) (unknown)
3. S-video output signal abnormal (PAL format) (unknown)

First check

Observe test image at 800×600 NTSC on monitor

Test point: S-video output
Expected: Test pattern image visible on monitor

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

Some LEDs in circuit boards not illuminated

Some LEDs in boards and cards fail to light up; dual-color LEDs always illuminate the same color simultaneously instead of changing.

Ranked causes

1. LED soldering direction incorrect (common)
2. LED component physically damaged (occasional)
3. Dual-color LED pin broken or open circuit (occasional)

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

Sound capture not working after card connection

Audio is not captured when capture command is executed on connected video card, despite video capture functioning.

Ranked causes

1. Audio driver not correctly installed (common)
2. Audio input signal rule not configured in capture software (common)
3. EMP202 audio chip damaged (occasional)

First check

Verify audio driver installation

Test point: system device manager or audio settings
Expected: audio driver listed and active

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

Transmission and reception function test failed high voltage

Transmit/receive circuits, high-voltage isolation, or high-voltage switching channels are not functioning; open or short circuit detected

Ranked causes

1. Open circuit on transmit/receive channel (occasional)
2. Short circuit on transmit/receive channel (occasional)
3. Broken high voltage switch channel (occasional)

First check

Run transmission and reception function test

Test point: Transmit/receive and high-voltage circuits
Expected: PASS

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

Adapter output voltage low or common-mode inductor open caution

Power output indicator lit and adapter-present indicator of main unit is off when adapter connected; no response when POWERBTN pressed with adapter only; system starts normally but battery status indicator is off or blinking orange with both adapter and batteries connected

Ranked causes

1. Output voltage of adapter lower than 10.8V (rare)
2. Common-mode inductor of main board adapter open circuit (common)

First check

Measure adapter output voltage

Test point: Adapter output
Expected: 10.8V or higher

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

Adapter-present indicator off, system starts normally, PWR_BTN no response on battery caution

Adapter output indicator lit; adapter-present indicator in control panel off; system starts normally on adapter; PWR_BTN indicator off; battery indicators display normally; no response when Power_BTN pressed on batteries

Ranked causes

1. 5VSTB_OK# output of power module abnormal (rare)
2. 5VSTB_OK# reception of main board abnormal (common)

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

Black area in image with self-diagnosis passed

Black region or dropout appears in ultrasound B/C/PW/CW image when front-end channel self-test passes

Ranked causes

1. High-voltage switch malfunction on main board (occasional)
2. Transducer damage (occasional)

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

Charging unit voltage not normal or rising slowly

A_battery+ or B_battery+ voltage is not about 12.6V or the voltage rises slowly during charging

Ranked causes

1. Charging unit A or B in auxiliary power board is faulty (common)
2. Battery pack is faulty or power capacity is insufficient or connection is faulty (common)

First check

Measure A_battery+ or B_battery+ voltage with adapter on

Test point: A_battery+ or B_battery+ test point
Expected: about 12.6V
Tools: Multimeter

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

Fan speed monitor test failed caution

One or more of the 5 system fans are not rotating normally or stopped

Ranked causes

1. Fan mechanical failure or motor defect (common)
2. Fan connector or circuit fault on Main board U90 (occasional)

First check

Run CPU fan speed test

Test point: CPU fan
Expected: PASS

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

Frame Process SSRAM test failed

SSRAM address bus or data bus failure detected; address bus may be disconnected, short-connected, or stuck

Ranked causes

1. Address bus disconnected, short-connected, stuck high, or stuck low (common)
2. SSRAM memory damaged (occasional)

First check

Run SSRAM data bus test

Test point: SSRAM
Expected: PASS

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

Main board or power module temperature test failed caution

Main board or power module temperature reading is outside normal operating range

Ranked causes

1. Temperature sensor fault on Main board U90 or power board Q17 (occasional)
2. Excessive heat generation or cooling system failure (occasional)

First check

Check main board temperature reading

Test point: Main board U90
Expected: PASS

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

No image output to any display

Nothing displayed on LCD, VGA, DVI, Video or S-video outputs; backlight visible in dark room; system otherwise operational with normal button response and fan running

Ranked causes

1. Abnormal 12V processing on main board (common)
2. Industrial control board POST failure (occasional)

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

No noise image with no transducer at maximal gain

When transducer not connected and digital gain set to maximum, no noise image appears in image region

Ranked causes

1. AFE (Analog Front End) fault on main board (common)
2. 3V6 power module output abnormal (rare)

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

Nothing displayed on LCD, VGA, DVI, Video, Svideo caution

Adapter indicator, electricity indicator, and Power_BTN backlight all normal; Power_BTN backlight first blinks then stays on with beep; fan runs normally; control panel backlight normal; nothing displayed on LCD, VGA, DVI, Video, Svideo; Doppler available; short press PWR_BTN does not power off; LCD backlight visible in dark room

Ranked causes

1. 3.3V output of power module abnormal (common)
2. 3.3V of main board short-circuited (rare)

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

Nothing displayed, control panel backlight off, short PWR_BTN press powers off caution

Adapter indicator, electricity indicator, and Power_BTN backlight all normal; Power_BTN backlight first blinks then stays on with beep; control panel backlight off; fan runs normally; nothing displayed on LCD, VGA, DVI, Video, Svideo; LCD backlight visible in dark room; short press PWR_BTN powers off

Ranked causes

1. 5V output of power module abnormal (common)
2. 5V of main board short-circuited (rare)

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

Operating system not found during startup

Boot failure with message 'Operating system no found' displayed during system startup

Ranked causes

1. HDD failure (common)
2. Operating system boot failure (occasional)

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

S-video interface test fails

S-video output on IO extend board not functioning; display device not receiving video or image corrupted

Ranked causes

1. Display device not connected or not powered (common)
2. S-video output circuit defect on IO extend board (occasional)

First check

Connect S-video display to system

Test point: S-video output connector on IO extend board
Expected: Display powered and ready to receive video

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

Transducer identification issue

Transducer connects and is identified correctly but only noise image appears in non-frozen mode

Ranked causes

1. Transducer identification problem on main board (common)
2. Transducer damaged (rare)

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

Transducer identified but no image after connection

System correctly identifies transducer when connected, but no image is produced

Ranked causes

1. Programmed voltage fault in power module (common)
2. Programmed power short on main board (common)

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

Unit does not power on via AC adapter high voltage

System fails to power up when AC adapter and AC power supply are connected

Ranked causes

1. AC adapter is faulty or main power board is short-circuited (common)
2. U12 of main power board is faulty (occasional)

First check

Verify boards and cards are properly connected

Test point: All connectors on main power board and auxiliary power board
Expected: All connectors fully seated and locked

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

USB interface test fails

Four USB interfaces on machine or I/O extend module not working normally; test clamps not inserted or connection issue

Ranked causes

1. Test clamps not connected to USB ports (common)
2. USB port hardware or circuit defect (occasional)

First check

Insert USB test clamps into all four USB ports

Test point: Four USB ports on machine
Expected: Dialog box appears or test begins without error prompt

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

Video capture card no display after connection

Screen does not display images after video capture card is connected to USB port.

Ranked causes

1. USB cable not secured or unseated (common)
2. Video capture chip damaged (occasional)

First check

Inspect USB cable physical connection

Test point: USB cable connectors at card and port
Expected: cable firmly seated

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

4D driver board identification or circuit failure

Self-diagnosis 4D driver board ID or driver circuit test indicates failure

Ranked causes

1. 4D driver board or main board interconnection issue (common)

First check

Run 4D driver board ID test

Test point: 4D driver board FPGA interface
Expected: 4D Driver Board logic version and board ID readable

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

4D transducer mechanical scan does not begin

Switching to 4D mode does not initiate transducer scanning

Ranked causes

1. Power module -12V output unavailable (common)

First check

Power module -12V output voltage

Test point: Power module -12V output
Expected: -12V VDC
Tools: DMM

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

4D transducer mechanical scan stops after starting high voltage

Motor stops working after few seconds during 4D mode operation

Ranked causes

1. Motor stops working after starting (unknown)

First check

Measure HALL signal during transducer operation

Test point: PIN 3 of socket P5
Expected: Square wave output present during operation
Tools: Oscilloscope

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

Adapter and adapter-present indicators both off when connected

Both adapter output indicator and adapter-present indicator of main unit are off when adapter is connected to main unit

Ranked causes

1. Adapter is damaged (common)

First check

Verify both adapter output indicator and adapter-present indicator status when connected

Test point: Adapter output indicator and main unit adapter-present indicator
Expected: Both should be on when connected

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

Adapter does not power system caution

Output indicator of adapter is off when not connected to main unit; output indicator and adapter-present indicator are off when adapter is connected; no response when POWERBTN is pressed with adapter only; system starts normally but battery status indicator is off or blinking orange when both adapter and batteries are connected

Ranked causes

1. Adapter is damaged (common)

First check

Check adapter output indicator status when not connected to main unit

Test point: Adapter output indicator
Expected: Output indicator lit

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

Adapter output off when connected, all control panel indicators off caution

Adapter output indicator normal when not connected; output indicator off when connected to main unit; all control panel indicators are off; no response when PWR_BTN pressed with adapter or batteries

Ranked causes

1. Input segment of power module short-circuited (common)

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

AFE digital interface test failed

One or more of the 8 analog front-end digital interfaces are not functioning normally

Ranked causes

1. Hardware or circuit fault on Main board U1, U10, or ADC connectors U46-U52 (unknown)

First check

Run AFE ADC digital interface test

Test point: Main board U1, U10, U46-U52
Expected: PASS

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

AFE noise test failed

Analog front-end noise data exceeds specified range or broken channel detected

Ranked causes

1. Broken AFE channel or noise circuit fault (unknown)

First check

Run AFE noise test

Test point: Main board U1, U10, U46-U52
Expected: PASS

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

ATGC function test failed

Automatic time gain control function not operating normally

Ranked causes

1. Hardware or circuit fault affecting ATGC function (unknown)

First check

Run ATGC function test

Test point: Main board U25, U1, U10, U46-U52
Expected: PASS

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

Battery communication or status test failure

Self-diagnosis battery I2C interconnection or battery function test indicates failure

Ranked causes

1. Battery or power board interconnection issue (common)

First check

Run left/right battery I2C interconnection test

Test point: Battery I2C communication bus
Expected: Left/Right Battery I2C connection test PASS

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

Battery status indicator off or blinking orange with adapter and batteries connected

System starts normally but battery status indicator is off or blinking orange when both adapter and batteries are connected

Ranked causes

1. Adapter is damaged (common)

First check

Check battery status indicator with adapter and batteries connected

Test point: Battery status indicator LED
Expected: Indicator should be on and not blinking orange

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

BF and DSP interconnection control interface test failed

Control bus between BF FPGA and DSP FPGA not functioning normally

Ranked causes

1. Hardware or circuit fault on Main board U6 or U10 (unknown)

First check

Run control bus test

Test point: Main board U6, U10
Expected: PASS

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

BF and DSP interconnection data interface test failed

RF data bus between BF FPGA and DSP FPGA not functioning normally

Ranked causes

1. Hardware or circuit fault on Main board U6 or U10 (unknown)

First check

Run BF and DSP interconnection data interface test

Test point: Main board U6, U10
Expected: PASS

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

BF and DSP interconnection INT interface test failed

Interrupt bus between BF FPGA and DSP FPGA not functioning normally

Ranked causes

1. Hardware or circuit fault on Main board U6 or U10 (unknown)

First check

Run INT interface test

Test point: Main board U6, U10
Expected: PASS

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

BF and DSP interconnection rate interface test failed

Rate signal reception from BF FPGA to DSP FPGA and TX FPGA not functioning normally

Ranked causes

1. Hardware or circuit fault on Main board U6 or U10 (unknown)

First check

Run rate signal reception test

Test point: Main board U6, U10
Expected: PASS

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

Calibration: S-video PAL format output

Verify S-video output generates correct PAL 800x600 test pattern and system dialog responds to selection

Ranked causes

1. Verify S-video output format and resolution (common)

First check

S-video test pattern appears on external display

Test point: External S-video display connected to IO extend board
Expected: PAL-format 800x600 test pattern visible

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

CPU temperature exceeds safe operating limit patient safety

System detects CPU temperature beyond 105°C, triggers temperature warning with countdown timer before shutdown

Ranked causes

1. Inadequate cooling or fan failure (common)

First check

Measure CPU temperature

Test point: ADT7462 sensor
Expected: Below 105°C during normal operation

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

Data upload and parameter store DDR II test failed

DDR II memory for data upload and parameter storage not functioning normally

Ranked causes

1. Hardware or circuit fault on Main board U5 (unknown)

First check

Run data upload and parameter store DDR II test

Test point: Main board U5
Expected: PASS

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

ECG module fails to communicate or read

ECG Module Information Read Test or ECG Module Self Test returns FAIL; module does not respond or bootloader/board ID cannot be read

Ranked causes

1. ECG module communication circuit fault or poor connection (common)

First check

Verify ECG module is physically connected

Test point: ECG module presence
Expected: ECG module connected to system

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

Extend module not recognized

Probe extend module fails to be detected or recognized during self-diagnosis Extend Module Test

Ranked causes

1. Extend module connection fault or SPI communication failure (common)

First check

Follow Extend Module Test Flow: check probe extend module presence

Test point: Probe extend module presence detection
Expected: System detects presence or absence correctly per test flow

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

Image discontinuous or frames missing/discolored

Video playback exhibits dropped frames, missing image content, or color distortion during capture.

Ranked causes

1. SVIDEO or USB signal cable poor contact (common)

First check

Inspect SVIDEO and USB cable connections

Test point: SVIDEO and USB connectors
Expected: secure, corrosion-free contact

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

More symptoms

IQ frame buffer DDR II test failed
Keyboard communication or input test failure
Keyboard indicator D175 is OFF
Keyboard indicator D176 is OFF
Keyboard LED brightness not responding to test changes
Keyboard LEDs fail diagnostic test
LCD display uneven, other video outputs normal
LCD monitor display or control failure
Main board temperature alert
Main board voltage test failed
No response to power button with adapter only
Noise image with black area
Nothing displayed, control panel backlight off, short PWR_BTN press does not power off
Partial video display on capture card output
PC module and DSP FPGA interconnection test failed
PC module and MF interconnection test failed
PC module and system monitor interconnection test failed
PC module heat sink test failed
Power adapter output indicator off when not connected to main unit
Power board temperature alert
Power supply voltage out of range
Power supply voltage out of specification
S-video interface output not displayed
S-video output test dialog not responding
Self-diagnosis test image not displayed
Serial port test fails
System works on adapter, no response on batteries
System works on batteries, adapter does not work
TGC value is unstable
Transducer not recognized or communication abnormal
Transmission board interconnection failure
Video capture card power insufficient or surge occurs
Video interface output not displayed
Voltage supply out of range

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

Error codes

Code	Meaning	Trigger	Severity
`ADT7462:-12V Power supply voltage:%f, VoltLimtFloat: %f--%f`	-12V power supply voltage is outside acceptable range	-12V supply voltage measurement outside specified limits	error
`ADT7462:12V Power supply voltage out of range`	12V power rail voltage outside acceptable limits as specified in VoltLimtFloat	ADT7462 monitoring detects 12V rail voltage deviation from specification	error
`ADT7462:1.5V Power supply voltage:%f, VoltLimtFloat: %f--%f`	1.5V power supply voltage is outside acceptable range	1.5V supply voltage measurement outside specified limits	error
`ADT7462:1.5V Power supply voltage out of range`	1.5V power rail voltage outside acceptable limits as specified in VoltLimtFloat	ADT7462 monitoring detects 1V5 rail voltage deviation from specification	error
`ADT7462:1.8V Power supply voltage:%f, VoltLimtFloat: %f--%f`	1.8V power supply voltage is outside acceptable range	1.8V supply voltage measurement outside specified limits	error
`ADT7462:1.8V Power supply voltage out of range`	1.8V power rail voltage outside acceptable limits as specified in VoltLimtFloat	ADT7462 monitoring detects 1V8 rail voltage deviation from specification	error
`ADT7462:2.8V Power supply voltage:%f, VoltLimtFloat: %f--%f`	2.8V power supply voltage is outside acceptable range	2.8V supply voltage measurement outside specified limits	error
`ADT7462:2.8V Power supply voltage out of range`	2.8V power rail voltage outside acceptable limits as specified in VoltLimtFloat	ADT7462 monitoring detects 2V8 rail voltage deviation from specification	error
`ADT7462:3.3V Power supply voltage:%f, VoltLimtFloat: %f--%f`	3.3V power supply voltage is outside acceptable range	3.3V supply voltage measurement outside specified limits	error
`ADT7462:3.3V Power supply voltage out of range`	3.3V power rail voltage outside acceptable limits as specified in VoltLimtFloat	ADT7462 monitoring detects 3V3 rail voltage deviation from specification	error
`ADT7462:5.1V Power supply voltage:%f, VoltLimtFloat: %f--%f`	5.1V power supply voltage is outside acceptable range	5.1V supply voltage measurement outside specified limits	error
`ADT7462:5.1V Power supply voltage out of range`	5.1V power rail voltage outside acceptable limits as specified in VoltLimtFloat	ADT7462 monitoring detects 5V1 rail voltage deviation from specification	error
`ADT7462: Main Board Temperature Alert`	Main board temperature has exceeded safe operating limit	Main board temperature sensor reading exceeds threshold	warning
`ADT7462: Power Board Temperature Alert`	Power board temperature has exceeded safe operating limit	Power board temperature sensor reading exceeds threshold	warning
`CPU Temperature too high, ShutDown`	CPU temperature has exceeded critical limit of 105°C and system will shut down	CPU temperature exceeds 105°C	critical

Likely causes and actions for each code are in ServiceForge. Connect ServiceForge to your AI

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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.