Ultrasound systems · LOGIQ family

GE Healthcare LOGIQ 8: troubleshooting and error codes

The ServiceForge knowledge base holds 48 documented symptoms for the GE Healthcare LOGIQ 8, with 90 ranked causes, 105 diagnostic checks with test points and expected values, and 12 error codes. Each symptom below shows its causes and the first check; the rest is one connection away. Connect ServiceForge to your AI

Symptoms

Cannot enter Power Assistant mode patient safety

System fails to enter or activate Power Assistant operating mode

Ranked causes

1. Software version lower than R2.x.x (common)
2. Battery diagnostics failure (common)
3. Power Assistant Hardware or Battery not installed (occasional)
4. Power Assistant Hardware or Battery failure (occasional)
5. CPS2 module failure (rare)

First check

Verify software version

Test point: System software version display
Expected: Software version R2.x.x or later

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

Cannot select probe from touch panel

4D probe cannot be selected or accessed through the system touch panel interface

Ranked causes

1. 4D option not installed (common)
2. Incorrect CPS2 module installed (common)
3. 4D connector ports failed (occasional)
4. Probe is defective (occasional)
5. CPS2 module failure (rare)

First check

Verify 4D option installed

Test point: System hardware configuration
Expected: 4D option installed

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

Monitor display error

Monitor does not work, colors appear abnormal, contrast/brightness improper, distortion or blank display

Ranked causes

1. Monitor settings not at factory defaults (common)
2. Abnormal color settings (occasional)
3. Contrast or brightness improper (occasional)
4. Monitor display distortion or abnormal area (occasional)
5. Monitor hardware failure or no power (occasional)

First check

Reset monitor to factory defaults

Test point: Monitor settings memory
Expected: Factory default settings applied

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

Printer malfunction

Printer fails to operate; does not print or produce output

Ranked causes

1. Printer not properly connected (common)
2. No paper in printer (common)
3. Printing media exhausted (common)
4. P-keys not configured correctly (occasional)
5. Remote cable failure or printer hardware fault (occasional)

First check

Verify printer connections

Test point: Signal and power cables between printer and scanner
Expected: All cables properly connected

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

System does not boot up

System fails to power on or start booting; no response from standby switch or components do not initialize

Ranked causes

1. Power cord not connected or power switch turned off (common)
2. Standby Switch is blue instead of green (common)
3. Power cycling required (occasional)
4. Standby Switch requires extended shutdown (occasional)
5. Cable connection failure or monitor issue (occasional)

First check

Verify power cord connection

Test point: Mains inlet and back of system
Expected: Power cord firmly connected to mains and power switch on

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

Power Assistant cannot charge battery patient safety

Battery will not charge when Power Assistant charging is attempted

Ranked causes

1. Battery diagnostics failure (common)
2. Harness connection failure (occasional)
3. Power Assistant Hardware failure (occasional)
4. CPS2 module failure (rare)

First check

Run battery diagnostics

Test point: Battery diagnostic test
Expected: Battery diagnostics pass

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

Power Assistant communication error patient safety

System fails to communicate with Power Assistant module; communication link lost

Ranked causes

1. Harness connection failure (common)
2. Power Assistant Hardware failure (occasional)
3. CPS2 module failure (occasional)
4. GFS module failure (rare)

First check

Verify harness connections

Test point: Power Assistant communication harnesses
Expected: Both harnesses properly connected and secured

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

Power Assistant temperature error patient safety

System displays temperature error; thermal management failure in Power Assistant module

Ranked causes

1. Air filter clogged (common)
2. Harness connection failure (occasional)
3. Power Assistant Hardware failure (occasional)
4. CPS2 module failure (rare)

First check

Inspect and clean air filter

Test point: Air filter element
Expected: Filter clean and unobstructed; air flow normal

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

Universal Video Converter no image output

Video converter does not output image to secondary monitor or display

Ranked causes

1. Power not connected or LED not illuminated (common)
2. Signal output settings not configured correctly (common)
3. Video cable not connected or bent pins (common)
4. Secondary monitor input channel not set (occasional)

First check

Verify power to converter

Test point: Power cord and power LED
Expected: Power cord connected and power LED illuminated

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

Trackball has impaired sensitivity

Trackball response is sluggish or unresponsive; does not move smoothly or accurately

Ranked causes

1. Trackball response time settings not optimal (common)
2. Trackball contamination or wear (common)
3. Trackball mechanism failure (rare)

First check

Adjust trackball response settings

Test point: Utility - System - General - Trackball
Expected: Appropriate Speed and Acceleration values per Table 3-7

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

Distortion reading too large during environment check caution

Magnetic distortion measurement exceeds acceptable threshold during phantom surface scanning

Ranked causes

1. Metal objects in environment (common)
2. Second sensor malfunction (occasional)

First check

Move transducer across phantom scanning surfaces

Test point: Magnetic Distortion reading on Environmental Quality Indicator
Expected: Absolute value of 1-2 Distortion consistently <1 mm, <1 mm

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

Mode encoder registers twice when pushed once

Pressing mode encoder button once causes two registrations or activations instead of one

Ranked causes

1. Improper encoder cap setting (common)
2. Dust in encoder cap (common)

First check

Encoder cap setting and cleanliness

Test point: Mode encoder button and cap assembly
Expected: Cap properly seated with no dust; single activation per button press

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

Noise in image

Noise or interference appears in ultrasound image, affecting image quality

Ranked causes

1. Electrical interference from nearby devices (common)
2. Defective probe (occasional)

First check

Identify electrical interference sources

Test point: Scanner vicinity
Expected: No active electrical devices affecting scanner

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

Power LED not illuminated high voltage

Green LED inside Common Power Supply (CPS) is off after turning on mains switch, indicating RTP does not have full function or voltages are out of range

Ranked causes

1. Power supply voltages out of specification (common)
2. Voltage measurement out of range on CSI board (common)

First check

Verify green LED illumination in Common Power Supply

Test point: CPS internal LED
Expected: LED ON after mains switch turned on

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

Power supply voltage out of range high voltage

DC power supply output is outside specified range on one or more outlets

Ranked causes

1. Power supply malfunction (occasional)
2. Connected unit malfunction or load issue (occasional)

First check

Measure DC power supply output voltage

Test point: Power supply outlet under test
Expected: Within specified range (self-regulated)

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

Probe will not sweep or image not updating

3D/4D probe does not perform sweep motion; image does not update or refresh

Ranked causes

1. Probe is defective (common)
2. CPS2 module failure (occasional)

First check

Test with alternate probe

Test point: Different 3D/4D probe
Expected: Alternate probe performs sweep and updates image

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

System temperature too high caution

CPU temperature exceeded 95°C threshold; system displays warning and will shut down if temperature reaches 100°C

Ranked causes

1. Air filter clogged, restricting cooling airflow (common)
2. Ambient temperature too high or insufficient ventilation (occasional)

First check

Measure CPU temperature via system logs

Test point: BEP_CPU_TEMPERATURE sensor
Expected: Below 95°C, 0 to 95°C

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

System unrecoverable error during scan patient safety

Fatal or non-fatal error occurring during acquisition; system unable to continue scanning and forces reboot

Ranked causes

1. CPS power voltage drop during scan (CPS_FAULT_HVLV_ERROR) (occasional)
2. Hardware initialization failure (BF_ERROR, SW R1.1.1 only) (rare)

First check

Open and analyze logfile.txt

Test point: D:\LOG\logfile.txt on console
Expected: No CPS_FAULT_HVLV_ERROR or BF_ERROR entries around error time

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

Battery deterioration detected

Battery has aged and lost capacity; system displays warning and may prevent key operation or initiate shutdown

Ranked causes

1. Battery aged beyond usable capacity (common)

First check

Check battery capacity and cycle count in logs

Test point: System battery diagnostics
Expected: FCC (full charge capacity) normal for model; CycleCount below threshold

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

Battery error or undetectable battery

Battery communication or detection failure; system initiates immediate shutdown

Ranked causes

1. Battery connector loose or battery faulty (occasional)

First check

Inspect battery connector and contact condition

Test point: Battery connector pins and socket
Expected: No visible corrosion, loose pins, or damage

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

Black image area in B-Mode image

Dark or black area appears in B-mode ultrasound image; lack of signal in portion of field

Ranked causes

1. 3D/4D probe defect presenting as 2D image issue (occasional)

First check

Test with alternate probe

Test point: Different 3D/4D probe
Expected: Normal B-mode image without black areas

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

Calibration: Application turnover check

Pre-delivery configuration verification for scanner return to customer

Ranked causes

1. Configuration not verified before customer handover (common)

First check

Date and Time setting

Test point: System configuration
Expected: Correct date and time

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

Calibration: Caster replacement caution

Procedure to replace worn or damaged caster wheels on LOGIQ S8/E8 ultrasound system. System weighs ~100-113 kg and requires safe handling to prevent tipping.

Ranked causes

1. Caster requires replacement (unknown)

First check

Remove caster cap

Test point: Caster assembly
Expected: Cap removed without tools

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

Calibration: LCD monitor brightness

Adjust monitor brightness for proper grayscale display where black levels disappear into background and white is bright but not saturated

Ranked causes

1. Factory brightness settings not optimal for examination room (common)

First check

Display complete grayscale on monitor

Test point: LCD monitor display
Expected: Lowest black level disappears into background; highest white is bright but not saturated

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

Calibration: LCD monitor color temperature mode

Select color temperature mode (9000K/11000K/13000K/15000K or USER) and if USER mode selected, adjust R/G/B values

Ranked causes

1. Color temperature mode requires selection and possible R/G/B adjustment (common)

First check

Navigate to color temperature mode

Test point: Monitor menu - Picture > Color Temp > MODE
Expected: Color temperature mode menu displayed

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

Calibration: LCD monitor contrast

Adjust monitor contrast for proper image quality; critical to prevent unnecessary changes to Gain, TGC, Dynamic Range or Acoustic Output

Ranked causes

1. Factory contrast settings require adjustment for examination conditions (common)

First check

Access monitor menu

Test point: MENU button on monitor control panel
Expected: Main menu appears on display

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

Calibration: LCD monitor display scale

Set display scale to FULL, 5:4, or NATIVE resolution mode

Ranked causes

1. Display scale setting requires selection from available options (common)

First check

Navigate to scale setting

Test point: Monitor menu - FUNCTION > Scale
Expected: Scale submenu displayed with available options

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

Calibration: LCD monitor gamma

Adjust gamma curve to 2.2 or 2.4 for proper tonal reproduction

Ranked causes

1. Gamma setting requires selection between 2.2 or 2.4 (common)

First check

Navigate to gamma setting

Test point: Monitor menu - Picture > Color Temp > GAMMA
Expected: Gamma submenu displayed

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

Calibration: LCD monitor half tone

Adjust half tone (gray level midpoint) for proper midtone display (0-100%)

Ranked causes

1. Half tone midtone level requires adjustment (occasional)

First check

Navigate to HALF TONE setting

Test point: Monitor menu - OSD > HALF TONE
Expected: HALF TONE adjustment menu displayed

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

Calibration: LCD monitor horizontal position

Adjust horizontal position of on-screen display elements (0-100%)

Ranked causes

1. Horizontal position of OSD requires adjustment (occasional)

First check

Navigate to H-POSITION setting

Test point: Monitor menu - OSD > H-POSITION
Expected: H-POSITION adjustment menu displayed

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

Calibration: LCD monitor OSD language

Select on-screen display language from English, German, French, Spanish, Italian, Swedish, Chinese, or Japanese

Ranked causes

1. OSD language selection required (common)

First check

Navigate to language setting

Test point: Monitor menu - OSD > LANGUAGE
Expected: Language selection menu displayed

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

Calibration: LCD monitor SBC setting

Enable or disable SBC (Static Background Correction) feature

Ranked causes

1. SBC feature requires ON/OFF selection (common)

First check

Navigate to SBC setting

Test point: Monitor menu - FUNCTION > SBC
Expected: SBC submenu displayed

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

Calibration: LCD monitor vertical position

Adjust vertical position of on-screen display elements (0-100%)

Ranked causes

1. Vertical position of OSD requires adjustment (occasional)

First check

Navigate to V-POSITION setting

Test point: Monitor menu - OSD > V-POSITION
Expected: V-POSITION adjustment menu displayed

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

Calibration: Volume Navigation

System-specific calibration correction for electromagnetic sensors and probes to reduce system-to-system variation from factory baseline

Ranked causes

1. Electromagnetic sensor and probe variations (common)

First check

Set up Volume Navigation system with transmitter and sensors

Test point: Transmitter placement relative to phantom
Expected: Bottom of transmitter at same level as top of phantom; phantom center 8-16 inches (20-40 cm) from transmitter face, 8-16 inches

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

Cannot charge after extended discharging in hot environment patient safety

Battery will not charge after prolonged discharge in high-temperature conditions; recovery time of 30-90 minutes required

Ranked causes

1. Battery thermal protection activated after prolonged hot discharge (common)

First check

Wait for battery thermal recovery

Test point: Battery temperature and charging readiness
Expected: Battery cool to ambient temperature; ready to charge

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

Distortion cycling or GPS Marker circling with steady probe caution

Magnetic distortion reading cycles rapidly or GPS Target Marker orbits around point instead of remaining stationary when probe held steady

Ranked causes

1. Transmitter too far from phantom (common)

First check

Verify transmitter distance and position

Test point: Transmitter placement relative to phantom
Expected: Bottom of transmitter at same level as top of phantom; phantom center 8-16 inches (20-40 cm) from transmitter face, 8-16 inches

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

GPS Marker does not track point when transducer rotated caution

GPS Target Marker fails to track same point of interest when probe is turned 90 degrees

Ranked causes

1. Sensors 1 and 2 swapped (occasional)

First check

Verify sensor 1 and 2 connections

Test point: Sensor connector positions on bracket
Expected: Sensors 1 and 2 in correct non-swapped positions per probe type (9L-D, ML6-15-D, C1-5-D)

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

Invalid hardware configuration detected

System detects mismatch or missing hardware board during boot; system will not enter scan mode

Ranked causes

1. Hardware rack configuration mismatch or missing board (rare)

First check

Inspect hardware rack assembly

Test point: All function boards in chassis
Expected: BF_FuncRev1D, COMEXP_FuncRev1A, CPS_FuncRev1A, GFS_FuncRev1A, PID_FuncRev1A all present and properly seated

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

LCD monitor brightness does not recover

LCD monitor brightness setting does not restore to proper level; display appears dim after adjustment

Ranked causes

1. Monitor settings not reset to defaults (common)

First check

Execute LCD monitor Memory Recall

Test point: LCD monitor settings memory
Expected: Monitor brightness restored to factory default

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

Low battery warning

Battery power insufficient; system initiates automatic shutdown sequence

Ranked causes

1. Battery charge depleted during operation or standby (common)

First check

Verify AC power connection

Test point: Mains power input
Expected: AC power connected and available

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

Lower air filter requires cleaning

System displays message that lower air filter needs maintenance

Ranked causes

1. Air filter clogged with dust (common)

First check

Observe lower air filter condition

Test point: Lower air filter housing
Expected: Filter clean, no visible dust blockage

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

No sound from speaker

Speaker produces no audible output during system operation or diagnostics

Ranked causes

1. Speaker failed or disconnected (unknown)

First check

Verify system volume setting

Test point: System volume control
Expected: Not set to zero

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

Power Assistant battery life short patient safety

Battery discharges rapidly; operating time less than 20 minutes on full charge

Ranked causes

1. Battery worn out or defective (common)

First check

Verify battery charging and runtime

Test point: Battery runtime measurement
Expected: Battery operates for more than 20 minutes

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

Probe sweeps then stops; image update halts

3D/4D probe begins sweeping but stops after a short time; image updates then freeze

Ranked causes

1. Probe is defective or overheating (common)

First check

Test with alternate probe

Test point: Different 3D/4D probe
Expected: Alternate probe sustains sweep without stopping

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

Sticky buttons caution

Button does not respond smoothly or gets stuck when pressed; may require extra force or repeated attempts to activate

Ranked causes

1. Dust or liquid contamination in button mechanism (common)

First check

Visual inspection of button and key-base

Test point: Button mechanism and key-base assembly
Expected: No visible dust or liquid contamination; smooth button movement

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

System voltage fault detected high voltage

Power supply voltage out of tolerance; system displays fault message and initiates shutdown

Ranked causes

1. Power supply voltage deviation (e.g., BF_AVDD_3V3_2 out of range) (occasional)

First check

Measure supply rail voltage

Test point: BF_AVDD_3V3_2 supply rail
Expected: 3.3 V (soft limits typically narrower; hard limits 2.970 to 4.000 V), 2.970 to 4.000 V (soft limits narrower)
Tools: Multimeter or system log analysis

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

UVC external monitor displays no image

After system power-on, external monitor connected to UVC output shows no display

Ranked causes

1. UVC not fully booted (common)

First check

Verify external monitor is connected to correct UVC output port

Test point: UVC output (DVI, D-sub, or S-video/Composite)
Expected: Cable connected to appropriate output port

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

UVC external monitor shows cropped image only

When S-video or Composite output connected, only scan area displays instead of full main display

Ranked causes

1. S-video/Composite port output limitation (common)

First check

Identify which UVC output port is in use

Test point: Cable connection at UVC output
Expected: DVI, D-sub, or S-video/Composite port identified

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

Error codes

Code	Meaning	Trigger	Severity
`acqGfi - BF_ERROR`	Board Functor hardware initialization failure (SW version R1.1.1 only)	GFS and BF192 board handshake failure during boot sequence	error
`acqGfi - BF_ERROR_A/B/C`	Board Functor logic error or communication failure	Acquisition firmware detects invalid state or register mismatch in BF module	critical
`acqGfi - CPS_FAULT_HVLV_ERROR`	CPS power supply high-voltage low-voltage fault during acquisition	Power voltage drop detected in CPS module during active scan	error
`acqGfi - EMERGENCY_ERROR`	GFS board critical failure or watchdog timeout	GFS module fails to respond or encounters fatal condition during acquisition setup	critical
`acqGfi - GFE Channel Empty / CPS_ERROR variants`	Data path failure or CPS error preventing acquisition data flow	GFE FIFO buffer underflow combined with CPS control register fault (HVLV, POWER, or STOP)	critical
`acqGfi - Tx Power Supply not ready / HV setup timeout`	High-voltage power supply failed to reach operating voltage within timeout window	CPS HV output initialization exceeds 4127 ms timeout or never completes	error
`acqHouseKeeping - CPU Temperature exceeded 100°C`	CPU temperature critically high; immediate shutdown required	Temperature sensor BEP_CPU_TEMPERATURE reads 100°C or above	critical
`acqHouseKeeping - CPU Temperature exceeded 95°C`	CPU temperature sensor reading exceeds safe threshold	Temperature sensor BEP_CPU_TEMPERATURE reads 95°C or above	warning
`acqHouseKeeping - Invalid Hardware Configuration`	Required hardware board missing or incorrectly installed	System fails to detect required function board revision during hardware capability check	error
`acqHouseKeeping - System voltage fault`	Power supply rail voltage out of specification	Measured supply rail voltage (e.g., BF_AVDD_3V3_2) falls outside tolerance limits	error
`DFEManager - InPort not connected / DFE ERROR`	Data flow engine signal path disconnection or missing node	DFE configuration parser detects unconnected or missing input port during boot	error
`DFEManager - Invalid Hardware Rack Configuration`	Duplicate or more detailed variant of hardware mismatch error	DFEManager module unable to load or verify hardware configuration	critical

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

Community

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

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