UNICO G388
UNICO · Model G388
Heads: Available with Binocular or Dual Binocular Heads with 52 _ 75 mm Interpupillary Distance Adjustment. All rotate 360, and lock in-place with a thumbscrew. Coated Optics: All Optics feature the following coatings: Anti-Glare, Color Correction & Anti-Fungal. Eyepieces: Standard with 10x "High-Eyepoint" Extra-Widefield Oculars. Reticules and Pointers available on request. Objectives: Featuring Infinity Optics, Achromat or Plan, 4x, 10x, 40xR and 100xR. Objectives. 40 and 100x Objectives are "R", or Retractable. 100x is an Oil Immersion Objective. Numerical Aperture. 4x = NA 0.10, 10x = NA 0.25, 40x = NA 0.65, 100x = NA 1.25. Options. G388-LED: Achromat. G388PL-LED: Plan Achromat. Magnification: With 10X Eyepieces, Standard Magnification is 40X, 100X, 400X and 1,000X. Stand: Sturdy Cast Metal Frame with unique Polymer Accent Panel, designed to provide stability while dissipating bulb heat. Condenser: Features a Focusable NA 1.25 Abbe Condenser. Focusable with Rack and Pinion Movement. Focusing: Features smooth, extra-large Graduated Coaxial Coarse and Fine Focus Controls with Tension Adjustment to eliminate stage drift. Adjustable to your personal preferences. Stage: Built-in Graduated Mechanical Stage with Low-Position Coaxial X-Y Controls. Ball Bearing Movement allows for smooth, precise adjustments. Spring Loaded Slide Holder. Stage Size: 142 mm x 132 mm. Range of X-Y Stage Movement: 55 mm x 75 mm. Illumination: LED (3 Watt). Variable Intensity Rheostat Wheel is located on the left side of the base. Iris Diaphragm: Features Adjustable Iris with Metal Leaf Overlay Design. Optical Design allows for Blue and other filters to be mounted in the Illuminator Housing. Electrical: 110V - 60 Hz to 240V - 50 Hz, Universal Power Supply. The Fuse Rating is 250V 1.5A. Shipping Size: 13.5" x 10.5" x 17.5" (340 x 260 x 440 mm). Shipping Weight: 18 lbs (8.2 kg).
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/LED 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, air bubbles in the oil, or condenser aperture mis-set.
Illuminator lamp / LED failure
MediumSymptoms: No or dim light, will not brighten.
Root cause: Lamp / LED at end of life, or a rheostat / driver fault.
Focus / stage / nosepiece wear
LowSymptoms: Focus slips or binds, stage stiff or slips, nosepiece detent worn.
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 Periodic replacementRel. cost $R&R Fairly easy
Rheostat / illuminator driver
Class Major service partRel. cost $R&R Moderate
Focus mechanism / clutch kit
Class Major service partRel. cost $$R&R Difficult
Objective lens (DIN achromat)
Class Major service partRel. cost $$$R&R Fairly easy
Mains fuse
Class Major service partRel. cost $R&R Fairly easy
| Part | Service class | Relative cost | R&R difficulty |
|---|---|---|---|
| Illuminator lamp / LED module | Periodic replacement | $ | Fairly easy |
| Rheostat / illuminator driver | Major service part | $ | Moderate |
| Focus mechanism / clutch kit | Major service part | $$ | Difficult |
| Objective lens (DIN achromat) | Major service part | $$$ | Fairly easy |
| Mains fuse | 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 or LED 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 and clear bubbles.
- Set the condenser aperture.
- Clean all optical surfaces.
- Re-evaluate the image.
Technical Specs
- Height
- 16 in
- Length
- 9.5 in
- Weight
- 14 lbs
- Width
- 7.5 in
Documents & Manuals
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