Leica Microsystems M620 F20
Leica Microsystems · Model M620 F20
Direct halogen illumination ensures accurate color of anatomy illumination and longer bulb life since there is no loss of light on the fiber optic cable, resulting in cost savings. High degree of light transmission with OptiChrome technology, provides better patient safety by allowing the surgeon to use lower degrees of illumination. Anti-microbial nano silver coating, AgProtect, provides outstanding protection to microscope users by reducing their exposure to surface pathogens.
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.
Illumination failure or dim light
HighSymptoms: No light, dim field, sudden loss mid-procedure.
Root cause: Halogen lamp at end of life, or the quick-change lamp mount not seated.
Suspension / swing arm drift
HighSymptoms: Microscope head drifts down or will not stay positioned after an accessory change.
Root cause: Swing arm not re-balanced after adding/removing a camera or tube, or worn arm brakes.
Motorised focus / zoom fault
MediumSymptoms: Foot-control focus (50 mm range) or 6:1 zoom will not run or is erratic.
Root cause: Focus/zoom motor, foot-control switch, or cabling.
Optics contamination / fogging
LowSymptoms: Hazy or low-contrast image, spots in the field.
Root cause: Dust or fingerprints on the objective protective glass or oculars, or condensation.
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 (quick-change mount)
Let the lamp and mount cool before changing - burn risk.
Class Frequent wear itemRel. cost $R&R Fairly easy
Spare lamp (onboard)
Class Frequent wear itemRel. cost $R&R Easy
Swing-arm brake / balance assembly
Class Major service partRel. cost $$$R&R Difficult
Focus / zoom motor assembly
Class Major service partRel. cost $$$R&R Difficult
Objective protective glass
Class Periodic replacementRel. cost $R&R Easy
Mains fuse
Class Major service partRel. cost $R&R Fairly easy
| Part | Service class | Relative cost | R&R difficulty |
|---|---|---|---|
| Halogen lamp (quick-change mount) Let the lamp and mount cool before changing - burn risk. | Frequent wear item | $ | Fairly easy |
| Spare lamp (onboard) | Frequent wear item | $ | Easy |
| Swing-arm brake / balance assembly | Major service part | $$$ | Difficult |
| Focus / zoom motor assembly | Major service part | $$$ | Difficult |
| Objective protective glass | Periodic replacement | $ | Easy |
| Mains fuse | Major service part | $ | Fairly easy |
Relative cost: $ lowest · $$$$ highest service-part cost for this equipment class. Not a price.
Error Codes
Extracted directly from this unit's own service manual.
Caution 3Swing arm can move in an uncontrolled manner!
When transporting the surgical microscope, always return it to the transport position.
Caution 4Feet in lightweight shoes could become trapped beneath the casing of the base.
Always push the instrument to displace it; never pull it.
Caution 5Surgical microscope can move without warning!
Always lock the footbrake when you are not moving the system.
Caution 8Danger of collision! The surgical microscope can collide with surrounding components, the ceiling or lamps.
Check the danger area before moving the swing arm. Carefully move the ceiling mount upwards, and observe ceiling and lamps.
Caution 9Risk of infection!
Leave sufficient space around the stand to prevent contact with non-sterile components.
Caution 10Danger of collision! The surgical microscope can collide with surrounding components.
Check the danger area before moving the swing arm.
Caution 12Damage to the control panel
Operate the control panel using your fingers only. Never use hard, sharp or pointed objects made out of wood, metal or plastic. Never clean the control panel using cleaners that contain abrasive substances. These substances can scratch the surface and cause it to be become dull.
Caution 14Risk of burns! The lamp and its mount get very hot.
Check that the lamp and mount has cooled before you remove the lamp.
Warning 1Risk of injury through surgical microscope moving down!
Never balance or re-equip the instrument over the field of operation. Balance out the swing arm each time after changing accessories.
Warning 2Risk of injury through falling binocular tube!
Tighten the clamping screw.
Warning 6Risk of death from electrical shock!
The surgical microscope may be connected to a grounded socket only.
Warning 7Risk of injury through surgical microscope moving down!
Never position the surgical microscope over the patient while moving it downward. Observe the surgical microscope while moving it downward to prevent collisions.
Warning 11Failure of the illumination can be dangerous for the patient!
If the main lighting fails, switch to the emergency lighting immediately.
Warning 12Excessive illumination levels can injure the retina.
To protect the patient, minimize exposure times, use lower intensity settings, use protective filters (GG420 integrated)
Warning 13Risk of death from electrical shock!
Before replacing the fuse, unplug the power cable from the power socket.
Warning 15Risk of injury through falling surgical microscope!
Check the mounting of the assistant's stereomicroscope before every use.
WarningRisk of infection! This antimicrobial coating is no substitute for the usual cleaning and sterilization procedures according to applicable regulations.
Cleaning and sterilization must be performed according to applicable regulations.
Type 10448205Grounding reliability can only be achieved when EQUIPMENT is connected to equivalent receptacle marked "Hospital only" or "Hospital Grade".
S/N XXXXXXXXXSigns and labels
100V~/240V~50/60HzLeica M620 CM18
250VALeica M620 CM18
2xT6,3A/250VLeica M620 CM18
MODELLeica M620 CM18
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: No or dim light
- Unplug the power cable before touching the lamp.
- Let the lamp and mount cool, then check/replace the halogen lamp via the quick-change mount.
- Confirm the lamphouse and mount are fully seated.
- Check the mains fuse (unplug first).
- Confirm even, full-brightness illumination.
Symptom: Head will not hold position
- Re-balance the swing arm for the current accessory load per the manual.
- Never re-balance or re-equip over the operating field.
- Adjust the arm brakes.
- Replace the brake / balance assembly if it will not hold.
- Return the arm to the transport position when moving the stand.
Technical Specs
- Focus range
- 50 mm
- Focusing
- Motorized
- Magnification
- 6:1
Documents & Manuals
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