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Leica M844
Leica M820
User manual
10 713 294 – Version I
Living up to Life

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Summarization of Contents

User Manual Introduction
Symbols and Product Identification
Explains manual symbols and how to identify product model and serial number.
Design and Function: F40 Models
Leica M844 F40 and M820 F40
Details the design and function of Leica M844/M820 F40 microscope models.
Design and Function: F19 Models
Leica M844 F19 and M820 F19
Details the design and function of Leica M844/M820 F19 microscope models.
Design and Function: C40 Models
Leica M844 C40 and M820 C40
Details the design and function of Leica M844/M820 C40 microscope models.
Design and Function: CT40 Models
Leica M844 CT40 and M820 CT40
Details the design and function of Leica M844/M820 CT40 microscope models.
Controls
Stands and Ceiling Mounts: F40 Floor Stand
Describes the F40 floor stand, its controls, and power supply.
Stands and Ceiling Mounts: F19 Floor Stand
Details the F19 floor stand, its controls, and power supply.
Stands and Ceiling Mounts: C40 Ceiling Mount
Describes the C40 ceiling mount, its controls, and remote operation.
Stands and Ceiling Mounts: CT40 Ceiling Mount
Details the CT40 ceiling mount, its controls, and remote operation.
Control Unit: Front View and Connections
Explains the front panel layout and connection ports of the control unit.
Leica M844 and M820 Surgical Microscopes
Details the main components and features of the Leica M844 and M820 surgical microscopes.
Leica M844 Accessories
Describes optional accessories like the 0° assistant's attachment and double wing.
Leica M820 Accessories
Details optional accessories such as beam splitters for the Leica M820 microscope.
Binocular Tube Accessories
Presents different binocular tube options and their specifications for Leica M844/M820.
Foot/Handswitches and Handles
Illustrates and explains various footswitch, handswitch, and handle configurations.
Footswitch/Handswitch Configurations (Retina)
Details Retina configuration for footswitch/handswitch assignments.
Video and Photo Accessories for Leica M844
Details video and photo accessories available for the Leica M844 microscope.
Video and Photo Accessories for Leica M820
Lists and describes video and photo accessories for the Leica M820 microscope.
Preparation for Operation
Checklist: Before the Operation
Provides a step-by-step checklist for preparing the microscope before use.
Fitting Optical Accessories for Leica M844
Guides on how to fit optical accessories to the Leica M844 microscope.
Fitting Optical Accessories for Leica M820
Instructions for fitting optical accessories to the Leica M820 microscope.
Adjusting Optical Accessories (General)
Provides general guidance on adjusting optical accessories, including tube settings and diopters.
Adjusting the 0° Assistant's Attachment (Leica M844)
Details adjustments for the 0° assistant's attachment on the Leica M844.
Fitting Documentation Accessories
Details the process of fitting documentation accessories like cameras and video adapters.
Selecting Documentation Accessories
Guides on selecting appropriate documentation accessories based on sensor size.
Mounting and Adjusting the Slit Lamp
Provides instructions and safety information for mounting and adjusting the slit lamp.
BIOM Connection and Slit Tube Covers
Explains BIOM connection, phototoxic damage, and sterile covers for the slit tube.
Wide-Angle Observation System
Details the installation and use of wide-angle observation systems like Oculus.
Preparing the Stand: F40, C40, CT40 Models
Guides on balancing, locking, and releasing the swing arm for F40, C40, CT40 stands.
Preparing the Stand: F19 Models
Details procedures for balancing and preparing the F19 stand.
Transport and Parked Positions
Instructions for transporting and placing the microscope in parked positions.
Positioning at the Operating Table
Guides on how to position the microscope at the operating table.
Sterile Controls and Drapes
Covers the use of sterilizable handles and sterile drapes for maintaining sterility.
Using the Microscope
Microscope Positioning and Reset Functions
Covers coarse/fine positioning, joystick use, and reset button functions.
Adjusting Illumination and Microscope Settings
Guides on adjusting illumination, brightness, and using filters.
Adjusting Magnification, Focus, and Operating Modes
Explains how to adjust magnification, focus, and change operating modes.
Switching On and Selecting Users
Guides on powering on, selecting users, and initial setup.
Editing User Lists and Settings
Guides on managing user lists, creating new users, and saving settings.
Start Values and Footswitch/Handswitch Assignment
Covers setting start values for lights/magnification and assigning footswitch functions.
Function Group Overview and Handle Assignment
Lists function groups and details handle assignment options.
StepCycle™ Functionality
Explains how to enable, disable, and use the StepCycle™ feature for saving parameters.
Auto Reset and Maintenance Menu
Explains Auto Reset function and the maintenance menu for lamp history and checks.
Troubleshooting Menus: How To and Service
Describes the "How To" menu for summaries and the password-protected Service menu.
Safety Notes
Intended Use and User Qualifications
Outlines intended use, user qualifications, and responsibilities.
Operator Instructions and Hazards
Covers operator guidance, stability, movable parts hazards, and electrical safety.
Dangers of Use and Cautions
Lists various dangers and cautions related to operating the microscope.
Signs and Labels
Illustrates and explains various safety signs and labels found on the microscope.
Signs and Labels: Telescope Mount
Illustrates safety labels specific to the Leica Telescope Mount.
Signs and Labels: Horizontal Arm/Swing Arm
Illustrates safety labels for the horizontal arm and swing arm of the microscope.
Guidance and Manufacturer's Declaration
Electromagnetic Compatibility (EMC) Declaration
Details the EMC declaration for electromagnetic emissions and environments.
Electromagnetic Immunity
Provides guidance on electromagnetic immunity tests and compliance levels.
Care and Maintenance
Maintenance Instructions
Provides general instructions for maintaining the microscope and its components.
Reprocessing of Resterilizable Products
Details procedures for cleaning, disinfecting, and reprocessing resterilizable parts.
Fuses and Bulb Replacement
Guides on how to change fuses and replace microscope bulbs.
Sterilization Table
Lists permissible sterilization methods for various microscope components.
Troubleshooting
General Faults and Remedies
Addresses general issues like function activation and cable connections.
Microscope Specific Faults
Covers troubleshooting for issues like no light or incorrect lamp mount.
Focus, Zoom, and Image Faults
Troubleshoots issues related to focus, zoom adjustment, and image clarity.
Control Unit and Stand Faults
Addresses issues with the control unit, error messages, and stand movement problems.
Specific Mount and Photography Issues
Troubleshoots problems related to ceiling mounts, stands, and image quality in photography.
Technical Data
Microscope Specifications
Lists detailed specifications for microscope models and their optical components.
Electrical and Optical Data
Provides electrical specifications and optical data for various microscope configurations.
Stands and Ceiling Mounts Specifications
Details dimensions, weights, and movement ranges for different stand and mount types.
Ambient Conditions, Standards, and Limitations
Covers operating environments, fulfilled standards, and usage limitations.
Dimensioning Drawings: F40 Models
Displays dimensional drawings in mm for the Leica M820 F40 and M844 F40 models.
Dimensioning Drawings: C40 Models
Provides dimensional drawings in mm for the Leica M820 C40 and M844 C40 models.
Dimensioning Drawings: CT40 Models
Displays dimensional drawings in mm for the Leica M820 CT40 and M844 CT40 models.
Dimensioning Drawings: F19 Models
Shows dimensional drawings in mm for the Leica M820 F19 and M844 F19 models.
About Leica Microsystems
Company Overview and Divisions
Introduces Leica Microsystems, its divisions, and global presence.

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