Bio-Rad Laboratories, Inc. Gel Doc XR +
Bio-Rad Laboratories, Inc. · Model Gel Doc XR +
Gel and blot imaging and analysis are quick and accurate Automated, hands-off routines; no training is required Save and recall all the steps in the workflow for repeatable and reproducible results Optimize the system at setup for image data that is always accurate, reproducible, and free of imaging artifacts Wide range of applications with special accessories to preserve sample integrity for downstream research while ensuring user safety Comprehensive, automated quantitative analysis of protein and DNA samples in seconds Customize and organize data in reports Obtain publication-quality results quickly Images are in focus at all times, regardless of zoom level or sample position Appropriate flat fielding correction is automatically and consistently applied to image data for every application Imaging artifacts are automatically corrected.
Key tips
- ·Run QC controls before trusting any repair - an analyzer that passes self-test can still report clinically wrong results.
- ·Rule out a reagent lot change before opening the instrument - it can look exactly like a hardware fault.
- ·Centrifuge rotors have a hard retirement age/cycle limit regardless of visible condition - don't eyeball it.
Typical Failure Modes
Compiled for this model from its own documentation and established engineering knowledge for this equipment class - not from a verified service record. Confirm against the manufacturer's service manual.
No or unstable output voltage / current
HighSymptoms: Run will not start, "no load" or "leak" fault, voltage / current will not hold the setpoint.
Root cause: Power-supply output fault, a bad tank / lead connection, buffer-conductivity issue, or a cracked electrode.
Tank / lid / electrode fault
MediumSymptoms: Leaks at the tank, warped lid will not seat, broken platinum electrode wire.
Root cause: Cracked tank / lid or a broken electrode.
Imaging / gel-doc fault (imagers)
MediumSymptoms: Dark or uneven images, transilluminator / LED not working, camera not detected.
Root cause: Transilluminator LEDs / tubes, the camera, or the imaging software.
Temperature / cooling fault (capillary / large-format)
MediumSymptoms: Runs overheat, poor resolution, temperature alarm.
Root cause: Cooling fan / Peltier or a coolant fault.
PC / software fault
LowSymptoms: Runs will not program, images / data will not save or analyse.
Root cause: PC or software / license.
Serviceable Parts & Consumables
Serviceable items for this model, compiled from its documentation and engineering knowledge for this equipment class. Service class and relative cost are estimates, not manufacturer figures; no part numbers are given. Confirm intervals and pricing against the manufacturer.
Power-supply output board
Class Major service partRel. cost $$R&R Moderate
Tank / lid / electrode set
Class Periodic replacementRel. cost $$R&R Fairly easy
Transilluminator LEDs / tubes (imagers)
Class Periodic replacementRel. cost $$R&R Fairly easy
Camera module (imagers)
Class Major service partRel. cost $$$R&R Moderate
Cooling fan / Peltier
Class Periodic replacementRel. cost $$R&R Moderate
| Part | Service class | Relative cost | R&R difficulty |
|---|---|---|---|
| Power-supply output board | Major service part | $$ | Moderate |
| Tank / lid / electrode set | Periodic replacement | $$ | Fairly easy |
| Transilluminator LEDs / tubes (imagers) | Periodic replacement | $$ | Fairly easy |
| Camera module (imagers) | Major service part | $$$ | Moderate |
| Cooling fan / Peltier | Periodic replacement | $$ | Moderate |
Relative cost: $ lowest · $$$$ highest service-part cost for this equipment class. Not a price.
PM Checklist
Preventive-maintenance tasks typical of this equipment class. Perform to the manufacturer's procedure and your facility's policy - this is general reference, not a schedule for this specific unit.
- ·Daily QC controls run and reviewed
- ·Calibration verification per assay
- ·Routine cleaning and decontamination
- ·Scheduled reagent-path and pump-tubing maintenance
Troubleshooting Approach
A starting sequence for this model, compiled from its documentation and engineering knowledge for this equipment class. Follow the manufacturer's service documentation for the actual procedure.
Symptom: QC / calibration failure across a channel or the whole system
- Run fresh controls at all levels and note which analytes fail.
- Confirm reagents are in date, correctly loaded, mixed and not bubbled.
- Run the photometer / lamp-energy check and replace the lamp if energy is low.
- Clean the sample and reagent probes, the mixers and the wash / cuvette-wash stations.
- Recalibrate the affected assay / ISE module and re-run QC.
Symptom: Sample or reagent probe clog / crash / short aspiration
- Inspect the probe for a bend or blockage and clear it (wire / sonicate per the manual).
- Run the fluidics prime and the probe-wash cycle.
- Check for a clot or fibrin in the sample and the liquid-level sensing.
- Verify probe positioning / alignment.
- Replace the probe if aspiration is still short.
Symptom: ISE electrolyte results biased or noisy / ISE calibration fails
- Run the ISE calibration and check the slope / drift against spec.
- Replace an ISE electrode or the reference that is at end of life.
- Check the ISE pinch valves and tubing for wear or air.
- Confirm the ISE standard packs are in date.
- Re-run ISE QC before releasing electrolyte results.
Symptom: High cuvette blanks / position-dependent results
- Run the cuvette blank / photometric check.
- Clean or replace worn / scratched cuvettes or the reaction segment.
- Check the cuvette-wash station nozzles and drying.
- Confirm the water / DI supply quality.
- Recalibrate and re-run QC.
Typical Location
Where this class of equipment is typically deployed - general reference, not this unit's own placement record.
- Central / core laboratory
- Point-of-care testing stations
- Blood bank
- Microbiology lab
Documents & Manuals
Related calculators
From BioLab, for work done with this kind of equipment.
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