NIDEK ARK 700/A
NIDEK · Model ARK 700/A
A ccurate, easy for the staff to use and very durable. The operator can choose to read both the objective refraction and K readings at the same time or one at a time. The Marco ARK-700 can store up to 20 readings and then average the readings. It can take three or more reaadings per eye. The left and right are easily distinguished for comparability. The instrument easily accommodates patients with intraocular lenses, and uses the single picture target. Auto printing are new features on the ARK-700.
Key tips
- ·Verify laser output with a real power meter, not the unit's own display - the display can drift independently of true output.
- ·Take "the image looks a little off" reports seriously - optical alignment drift is usually gradual, not sudden.
Typical Failure Modes
Failure patterns typical of this equipment class - general BMET reference, not verified against this exact unit's own service history unless flagged. Severity is a category-level estimate.
Light source / lamp failure
MediumSymptoms: Dim illumination, lamp error.
Root cause: Xenon/LED aging.
Probe / handpiece fault
HighSymptoms: No phaco power, error.
Root cause: Tip or handpiece wear.
Pump / fluidics fault
MediumSymptoms: Unstable anterior chamber.
Root cause: Peristaltic pump wear.
Imaging sensor drift
LowSymptoms: Blurry/offset image.
Root cause: Camera calibration drift.
Serviceable Parts & Consumables
The parts a BMET typically services on this class of equipment. Service class and relative cost are general engineering estimates for the category, not figures from this unit's documentation. Part numbers appear only when pulled from this unit's own service manual. Always confirm intervals and pricing against the manufacturer.
Illumination lamp / LED
Class Periodic replacementRel. cost $$$R&R Moderate
Peristaltic pump tubing
Consumable.
Class Frequent wear itemRel. cost $R&R Easy
Imaging camera module
Class Periodic replacementRel. cost $$$R&R Difficult
Phaco handpiece / tip
High-value, track usage.
Class Periodic replacementRel. cost $$$$R&R Difficult
| Part | Service class | Relative cost | R&R difficulty |
|---|---|---|---|
| Illumination lamp / LED | Periodic replacement | $$$ | Moderate |
| Peristaltic pump tubing Consumable. | Frequent wear item | $ | Easy |
| Imaging camera module | Periodic replacement | $$$ | Difficult |
| Phaco handpiece / tip High-value, track usage. | Periodic replacement | $$$$ | Difficult |
Relative cost: $ lowest · $$$$ 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.
- ·Optical alignment / calibration check
- ·Lamp or laser output verification
- ·Annual full PM
Troubleshooting Approach
A structured starting point derived from the failure modes above. Follow the manufacturer's service documentation for the actual procedure.
Symptom: Light source / lamp failure
- Confirm the presentation - typically dim illumination, lamp error - and note the exact alarm or message and the conditions when it occurs.
- Check the most likely cause first: xenon/LED aging.
- Isolate the affected subsystem using the manufacturer's functional check or self-test, where one is provided.
- If the fault is confirmed and not a field adjustment, service or replace the phaco handpiece / tip per the manufacturer's service documentation.
- Return the device to service only after the manufacturer's functional and applicable electrical-safety checks pass.
- Record the findings, any parts used, and the verification results in the maintenance history.
Symptom: Probe / handpiece fault
- Confirm the presentation - typically no phaco power, error - and note the exact alarm or message and the conditions when it occurs.
- Check the most likely cause first: tip or handpiece wear.
- Isolate the affected subsystem using the manufacturer's functional check or self-test, where one is provided.
- If the fault is confirmed and not a field adjustment, service or replace the illumination lamp / LED per the manufacturer's service documentation.
- Return the device to service only after the manufacturer's functional and applicable electrical-safety checks pass.
- Record the findings, any parts used, and the verification results in the maintenance history.
Typical Location
Where this class of equipment is typically deployed - general reference, not this unit's own placement record.
- Eye clinic / ophthalmology suite
- Operating Room (ophthalmic surgery)
Documents & Manuals
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