Seiler Precision Microscopes 985
Seiler Precision Microscopes · Model 985
The Seiler 985 Colposcope is the premier over the shoulder model from Seiler. The Seiler 985 Colposcope has a mount set up higher to remove any obstructions from the user's field. It is equipped with a 5 step magnification turret, 300 mm working distance, and standard LED illumination.
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.
Brightness uneven or insufficient
MediumSymptoms: Field dim or unevenly lit.
Root cause: Condenser too low or mis-centred, iris aperture wrong, dirty optics, or the illuminator lamp / LED aging.
Image not clear (contrast / definition poor)
MediumSymptoms: Low contrast or definition, one side dark, image moves while focusing.
Root cause: Wrong cover-glass thickness (needs 0.17 mm), no immersion oil where required, air bubbles in the oil, or the objective not fully in position.
Illuminator lamp / LED failure
MediumSymptoms: No or dim light.
Root cause: Lamp / LED at end of life, or a rheostat / driver fault.
Focus / stage mechanism wear
LowSymptoms: Coarse / fine focus slips or binds, mechanical stage stiff.
Root cause: Worn focus clutch or dried stage grease.
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.
Illuminator lamp / LED module
Class Frequent wear itemRel. cost $R&R Fairly easy
Mains fuse
Class Major service partRel. cost $R&R Fairly easy
Focus mechanism / clutch kit
Class Major service partRel. cost $$R&R Difficult
Objective lens
Class Major service partRel. cost $$$R&R Fairly easy
Mechanical stage drive
Class Major service partRel. cost $$R&R Difficult
| Part | Service class | Relative cost | R&R difficulty |
|---|---|---|---|
| Illuminator lamp / LED module | Frequent wear item | $ | Fairly easy |
| Mains fuse | Major service part | $ | Fairly easy |
| Focus mechanism / clutch kit | Major service part | $$ | Difficult |
| Objective lens | Major service part | $$$ | Fairly easy |
| Mechanical stage drive | Major service part | $$ | Difficult |
Relative cost: $ lowest · $$$$ highest service-part cost for this equipment class. Not a price.
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: Uneven or dim field
- Raise and centre the condenser and set the iris aperture.
- Clean all optical surfaces.
- Check the lamp / LED and replace if dim.
- Verify Kohler alignment.
- Re-check across objectives.
Symptom: Image not clear
- Fit a 0.17 mm cover glass and place the specimen level, clipped by the clamp.
- Use the correct immersion oil with oil objectives and clear any bubbles.
- Remove oil from dry objectives.
- Set the iris aperture and re-centre the condenser.
- Confirm each objective seats fully in the light path.
Technical Specs
- Height
- 32 to 54 inches
Documents & Manuals
No documents available for this device yet.
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