Olympus CH Series
Olympus · Model CH Series
Trinocular Compound Biological Microscope [list] [*] Binocular head permits viewing with both eyes, which is more comfortable, and provides better perception. [*] Trinocular port allows for camera hook-up [*] Fully coated glass optics [*] Sturdy metal construction [*] Co-axial controls allow for easy one or two handed operation with minimal fussing [/list]
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.
Uneven or dark illumination
MediumSymptoms: Vignetting, dark edges, uneven brightness across the field.
Root cause: Condenser height/aperture wrong, field diaphragm not centred, nosepiece not clicked in, or dirty optics; lamp aging.
Poor image quality / low contrast
MediumSymptoms: Blurry or low-contrast image.
Root cause: Wrong or missing 0.17 mm cover glass, immersion oil on a dry objective, or condenser aperture mis-set.
Illuminator lamp failure
MediumSymptoms: No or dim light.
Root cause: Halogen lamp at end of life or a rheostat / driver fault.
Focus / stage mechanism wear
LowSymptoms: Focus slips or binds, 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.
Halogen lamp
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
| Part | Service class | Relative cost | R&R difficulty |
|---|---|---|---|
| Halogen lamp | 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 |
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: Dark or uneven field
- Click the nosepiece fully into a detent.
- Set the condenser height and aperture and centre the field diaphragm (Kohler).
- Clean the objective, condenser, eyepieces and collector.
- Check / replace the lamp if dim.
- Re-check across objectives.
Symptom: Blurry image
- Fit a 0.17 mm cover glass, slide right-side up.
- Remove immersion oil from dry objectives; use oil only with oil objectives.
- Set the condenser aperture.
- Clean all optical surfaces.
- Re-evaluate the image.
Technical Specs
- Eyepiece Magnification
- 10x
- Viewing Head
- Trinocular
Documents & Manuals
No documents available for this device yet.
Related calculators
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