Leica M500 OH3 User manual

Leica Microsystems (Schweiz) AG Telephone [phone]
Business Unit SOM Fax [phone]
Max Schmidheiny-Strasse 201 www.leica-microsystems.com
CH-9435 Heerbrugg www.surgicalscopes.com
Service manual
Leica M500 OH3
10 665 679 / Edition 05/03
MICROSYSTEMS

Service manual
Leica M500 OH3
Stand for neuro surgical
microscopes
Doc Code 10 665679
Version 05/03
This documentation does not include the
service documentation about the
Leica M500 N microscope system. Find it in the documentation
10665607.
Legal questions / Safety 1
2
User manual 10711894 3
Assembly instructions 10711895 4
Description M500 OH3 5
6
7
Wiring diagram / locations 8
Service programs 9
Fault finding/diagnosis 10
Replacing modules 11
Maintenance service 12
Inspection procedure 13
Spare parts catalogue 14
15

Leica M500 OH3
User manual
10 711 894 – Version -

Leica M500 OH3 / Ref. 10 711 894 / Version -

Survey of chapters
Leica M500 OH3 / Ref. 10 711 894 / Version -
Introduction 3
Operating elements 9
Preparation before surgery 12
After surgery 13
Operation 14
Accessories 31
Safety precautions 34
Care and maintenance 38
What to do if... 40
Technical data 43
1

Contents
Leica M500 OH3 / Ref. 10 711 894 / Version -
Page
Introduction
User manual 3
Product identification 3
Symbols used in this manual 3
Overview 4
Function 6
Operating elements
Leica M500 N microscope with
microscope carrier 9
Control unit 10
Footswitches 11
Mouth switch 11
Preparation before surgery
Transportation 12
Preparations before surgery 12
Performing function checks 13
Positioning at operating table 13
After surgery
Tasks to be completed after surgery 13
Operation
Setting/releasing footbrakes 14
Locking the Leica M500 OH3 14
Selecting XYZ-Free/Focus-Lock brakes 15
Balancing out the Leica M500 OH3 15
Switching on illumination 18
Switching from main illuminator to backup
illuminator 18
Setting light field diameter of illumination field and
working distance 19
Lock/release multifocal focus 19
Selecting name of operating doctor at control unit 20
Determining dioptres for users 21
Setting up eyepieces 21
Attaching protective glass to eyepiece 21
Attaching sterile operating elements 22
Operation of control unit 22
Settings at control unit 23
Controlling zoom and focus 28
Pulling in additional cables 29
Changing wheel counterweight at D axis 30
Accessories
180° dual stereo attachment 31
Binocular tube; can be tilted; with variable
viewing angles 30°–150° 31
Stereo/second-observer attachment 31
Beam splitter with counterweight 31
Video-zoom tube 32
Adapter piece for accessories of the
M 600 series 32
Beam splitter 32
Dual Imaging Color Module DI C500 32
Ultra Observer ULT500 32
Mounting accessories 33
2
Page
Safety precautions
Intended use of instrument 34
Directions for the person responsible for the
instrument 34
Directions for the user 34
Dangers of use 35
Labelling 36
Care and maintenance
Care instructions 38
Replacing lamps 38
Replacing fuses 39
Operational check 39
What to do if...?
General faults 40
TV, photography 42
Error messages at control unit 42
Technical data
Electrical data 43
Leica M500 N 43
Accessories 43
Floor stand 44
Standards 44
Environmental conditions 44
Limitations on use 44
Dimensional drawings 45

Introduction
Leica M500 OH3 / Ref. 10 711 894 / Version -
User manual
This user manual contains important safety
precautions as well as information on setting up
the instrument (see the chapter entitled «Safety
precautions»).
Before attempting to set up the product carefully
read through the user manual.
Product identification
The model and serial number of your product are located on the
identification label on the illumination unit. Copy this
information into your user manual and always refer to it if you
have questions for our representatives or service locations.
Model: Serial No.:
Symbols used in this manual
The symbols used in this user manual have the following
meaning:
Warning This indicates a potentially hazardous
situation which could result in death or
serious injury.
Caution Indicates a potentially hazardous situation
which, if not avoided, may result in minor
or moderate injury and/or appreciable
material, financial and environmental
damage. It may also be used to alert
against unsafe practices.
Important paragraphs, which must be
adhered to in practice as they enable the
product to be used in a technically-
correct and efficient manner.
Indicates that you have to do something.
➩
3

Introduction
4Leica M500 OH3 / Ref. 10 711 894 / Version -
Overview
Leica M500 OH3 surgical microscope system
1 Horizontal cable channel
2 Swing arm
3 Vertical cable channel
4 Control unit
5 Illumination unit
4
5
6
7
9
2
8
3
1
6 Footbrake
7 Foot
8 Locking knob
9 Leica M500 N microscope

Introduction
5
Leica M500 OH3 / Ref. 10 711 894 / Version -
1 Vertical arm
2 Tension rod
3 Handle
4 Footswitch holder
5 Locking knob
1
2
3
4
5

Introduction
6Leica M500 OH3 / Ref. 10 711 894 / Version -
Function
Balancing system and brakes
The Leica M500 OH3 surgical microscope consists of the Leica
M500 N surgical microscope and the Leica OH3 floor stand.
The stand and surgical microscope are balanced out by the
balancing system. All movements which must be carried out
during the surgery require only minimal force.
The AB swivel movement is balanced out via the A and B
pinion.
Movement C is balanced out at the microscope carrier.
C
BA
B
A
The internal weight of the stand balances the weight of the
surgical microscope and the fitted accessories (movement D).
D
D

Introduction
7
Leica M500 OH3 / Ref. 10 711 894 / Version -
There are 6 electromagnetic brakes on the Leica M500 OH3
surgical microscope, which block movement of the base and
surgical microscope:
• up/down and forward/backward in a parallelogram (0 and 1)
• at base (2)
• in microscope carrier (3)
• at A and B sledges of the surgical microscope (4)
• in rotatable joint (5)
5
3
4
1
0
2
Using the selector switch (Item 10, Page 10) for brakes (XYZ
FREE or FOCUS LOCK) at the control unit, two different brake
groupings can be selected.
The following movements with the surgical microscope can still
be performed if the selector switch is located in the FOCUS
LOCK position:
The following movements with the surgical microscope can be
performed if the selector switch is located in the XYZ FREE
position:

Introduction
Leica M500 OH3 / Ref. 10 711 894 / Version -8
Illumination
The illumination of the Leica M500 OH3 surgical microscope
consists of a main illuminator and a backup illuminator.
They are located in the illumination unit.
The main and backup illuminators consist of xenon lamps. The
light of the main and backup illuminators is lead to the optics
carrier via a fibre-optic cable through the base.
If the main illuminator fails, the plug of the fibre-optic cable is
switched over to the backup illumination.
1 Access hatch for lamp inserts of main and backup
illuminators
2 Regulating knob for brightness of main illuminator
3 Outlet for fibre-optic light guide of main illuminator
4 Regulating knob for brightness of backup illuminator
5 Outlet for fibre-optic light guide of backup illuminator
6 Power switch of Leica M500 OH3 surgical microscope
7 100 V/120 V/220 V/240 V switch
8 Power connection
9 Pullout fuse for power cable
10 Potential equalisation connector
2
1
3
4
5
6
7
8
9
10
Two LEDs at the control unit indicate which illuminator is being
used at the moment (see Page 18).
The light field diameter can be concentrated at the optics
carrier with the rotary knob (11).
11

Operating elements
9
Leica M500 OH3 / Ref. 10 711 894 / Version -
Leica M500 microscope with
microscope carrier
1 Microscope carrier
2 B sledge
3 Switch for manual balancing of the B sledge
4 Switch for manual balancing of the C sledge
5 C sledge
6 Handgrip
7 Optics carrier
8 Switch for manual balancing of the A sledge
9 A sledge
10 Handgrip clamping lever
15
6
789
6
10
23 4
10
Handgrips (Item 6):
11 Joystick (selectable for XY movement or for menu control in
DI C500)
12 Focus
13 Selector button (three brakes)
14 ALL-FREE button (all brakes)
15 Zoom
11
15
14
12
13

Operating elements
10 Leica M500 OH3 / Ref. 10 711 894 / Version -
Control unit
1 Pushbutton for illumination (on/off)
2 LED for main illuminator
3 LED for backup illuminator
4 Pushbutton for auto balance with protective flap
5 LED for balancing of D axis
6 LED for balancing of A/B axis
7 LED for balancing of C axis
8 Toggle switch for manual balancing of D axis
9 Regulating knob for movement speed of the X/Y axes
10 Selector switch for brakes:
- XYZ-Free
- Focus-Lock
11 Display
12 Arrow keys
13 Cover for connections
14 Display key for menu control
123 4 5678 9 10
11
12
14 13
Connections on the underside of the control unit (cover for
connections, Item 13 removed):
15 RS-232 interface
16 On/Off connection for external device
17 Footswitches 1 and 2
18 CAN bus interface
19 CAN bus interface
15 16 17 18 19

Operating elements
11
Leica M500 OH3 / Ref. 10 711 894 / Version -
Footswitch
1 Adjustable supports
2 DI C500: Activate/deactivate imaging (On/Off)
3 Focus, short working distance
4 DI C500: Individual switching of shutters
DI C500 with IGS workstation: ENTER menu
5 Zoom (freely configurable; for default configuration, see
Page 25)
6 DI C500: Decrease the brightness of the displayed image
DI C500 with IGS workstation: Menu scroll down
7 Focus, long working distance
8 DI C500: Increase the brightness of the displayed image
DI C500 with IGS workstation: Menu scroll up
1
2
3
1
2
5
44 6
8
6
8
Y+
Y-
X+X-
Y+
Y-
X+
X-
7
5
3
7
Mouth switch
9 Brakes XYZ FREE
9

Preparation before surgery
12 Leica M500 OH3 / Ref. 10 711 894 / Version -
Transportation
Warning
Risk of injury by:
• Uncontrolled swinging out of swing arm!
• Tilting of the stand!
• Feet in lightweight shoes can become trapped
beneath the base!
➩When transporting the surgical microscope, always
return it to the transport position.
➩Always push the surgical microscope, never pull it.
Caution
Microscope can be damaged by uncontrolled tilting
over!
➩Hold the handgrips firmly before pressing the ALL-
FREE button.
➩Press the ALL-FREE button and bring the Leica M500 OH3 into
the transport position (see figure below).
➩Release footbrakes (see Page 14).
➩Move Leica M500 OH3 via handgrip.
Preparations before surgery
Cleaning optical accessories
➩Inspect the cleanliness of the eyepieces and objective as
well as any photo or TV adapters as appropriate.
➩Remove dust and dirt.
Mounting accessories
Warning
Mortal danger from electrical shock!
➩Connect the Leica M500 OH3 surgical microscope to
an earthed outlet only.
➩Lock the Leica M500 OH3 (see Page 14).
➩Connect power cable.
➩Switch on power switch.
➩Set footbrakes (see page 14).
➩Outfit microscope with all accessories for use.
➩Position hand/mouth switch.
➩Position handgrips as needed for the forthcoming surgery.
➩Screw off cover of connections (Item 13, Page 10), connect
provided footswitch and check settings (see Page 25).
Balancing out microscope
➩Balance out the Leica M500 OH3 (see Page 15).
➩Release locks (see Page 14).
Setting up eyepieces
➩Set eye-base and pupil-base (see Page 19).
➩Set dioptre values for users (see Page 21).
Configuring control unit
➩See the section entitled «Operation of the control unit»,
Page 22.
➩Check settings of the handgrips (DIC function or XY
movement) (see Page 26).
➩Inspect all connections and make certain that all accessories
are seated firmly.

Preparation before surgery/After surgery
13
Leica M500 OH3 / Ref. 10 711 894 / Version -
Performing function checks
Illumination
Always allow the main and backup illuminators to
remain lit for at least five minutes, otherwise the
lighting capacity will be quickly reduced.
➩Switch on main illuminator at the illumination unit
(see Page 18).
➩Switch to backup illuminator at the illumination unit
(see Page 18).
➩Switch illumination off again.
Footswitch
➩Test all functions with the footswitch.
Handgrip
➩Press the selection and ALL-FREE buttons and check
movement.
➩Set the movement speed of the X/Y axes with the regulating
knob (Item 9, Page 10) if necessary.
TV camera/monitor and still-photo camera
(if present)
➩Check the image on the TV monitor.
➩Align TV and SLR camera to the microscopic image.
➩For photographs: Insert daylight film.
Sterility
➩Attach sterile components and sterile drapes (see Page 22).
Balancing out microscope
➩Balance out the Leica M500 OH3 (see Page 15).
➩Press the ALL-FREE button and check balancing.
Positioning at operating table
Warning
Risk of injury from tilting surgical microscope!
➩Never change the accessories or attempt to
rebalance the microscope while it is over the field of
operation.
➩Lock the Leica M500 OH3 each time before changing
accessories.
➩Balance out the Leica M500 OH3 each time after
changing accessories.
➩Do not release brakes in an unbalanced state.
Positioning the Leica M500 OH3 at the operating table is quite
easy and offers a multitude of options, whether it be for surgery
at the head, spinal column, etc.
This freedom to choose your position with the M500 OH3 is
thanks to the extra-long and high swing arm.
➩Release footbrakes (see Page 14).
➩Carefully move the Leica M500 OH3 surgical microscope to
the operating table and position it for the forthcoming
surgery.
Positioning possibilities:
➩Set footbrake.
➩Position footswitch.
➩Connect potential equalisation.
Tasks to be completed after surgery
➩Swing microscope away.
➩Move Leica M500 OH3 to the transport position and out of the
operating area.
➩Remove sterile components.
➩Lock the Leica M500 OH3.
➩Move the Leica M500 OH3 to the parked position.

Operation
14 Leica M500 OH3 / Ref. 10 711 894 / Version -
Setting/releasing footbrakes
Warning
Surgical microscope can move without warning!
➩Always set footbrakes, except during transport.
Setting footbrakes
➩Loosen star grip (2).
➩Turn lever for footbrake (1) to the right.
➩Tighten star grip again.
Releasing footbrakes
➩Loosen star grip (2).
➩Turn lever for footbrake (1) to the left.
➩Tighten star grip again.
12
12
Locking the Leica M500 OH3
The D axis of the Leica M500 OH3 is locked when locking is
performed.
Locking is mainly used for installation and accessory-change at
the Leica M500 OH3.
➩Pull out and turn locking knobs (4) until both points (arrows)
are aligned.
➩Move swing arm up and down until the lock (5) engages.
➩Move swing arm forward and backward until the lock (3)
engages.
4
3
5