Leica WILD M695 User Manual.pdf

3.33 Mb
Loading...

Leica AG, CH-9435 Heerbrugg (Switzerland) Telephone +11 (071) 70 31 31, Fax +41 (071) 72 69 52

Leica is a registered trade mark of Leica technologij B. V. Rijswijk, the Netherlands

 

 

 

Legal matters

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Revisions/Service News

 

 

 

 

 

 

 

 

 

 

 

 

 

Service Manual

 

 

 

Introduction / User manual

 

 

 

 

 

 

 

 

 

 

 

 

WILD M695

 

 

Fault finding with testset

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Control unit MEL61/62, MEL64/65

5

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Swingarm MSV 136/137

6

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Microscope M695

7

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

8

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Wiring diagram

9

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Replacing modules

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Replacing boards

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Inspection procedure

12

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

13

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

14

 

 

 

 

 

 

 

 

 

 

 

 

 

 

15

 

 

 

 

 

 

 

 

 

 

 

 

 

16

 

 

 

 

 

 

 

 

 

 

 

 

Training

17

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Testset

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Spare parts catalogue

19

 

 

 

 

 

 

 

 

 

 

 

Special tools

20

Service Manual M695

Legal questions/ Safty-Rechtsfragen /

Sicherheit

Doc Code 636 718

09/93

3691-DMF

lnhaltsvetzeichnis / Table of contents

Kapitel

Seite

Rechtsfragen / Legal questions ......................................................................................

1

Sicherheit / Safety / Securite / Seguridad.......................................................................

3

Service Manual M695

Legal questions / Safty-Rechtsfragen / Sicherheit

Doc Code 636 718

09/93 3691-DMF

Copyright

Ohne vorherige schriftliche Erlaubnis der Firma Leica AG, Heerbrugg (Schweiz), darf dieses Dokument weder insgesamt noch auszugsweise mit mechanischen, fotografischen, elektronischen oder irgendwelchen anderen Mitteln (einschließlich ihrer Umwandlung oder Übertragung in maschinenlesbarer Form) kopiert, in einem Informationsspeicher abgelegt, außerhalb des dafür vorgesehenen Zwecks oder in irgend einer Form an von Leica AG, Heerbrugg nicht ausdrücklich befugte Dritte zuganglich gemacht oder abgegeben werden.

Haftung

Dieses Dokument richtet sich ausschließlich an qualifizierte Servicetechniker und Servicetechnikerinnen, welche über die notwendigen Fachkenntnisse verfugen.

Qualifizierte Servicetechniker und Servicetechnikerinnen sind solche, die den entsprechenden Servicekurs bei Leica AG, Heerbrugg erfolgreich besucht haben und bei Unternehmen der Leica Gruppe oder bei von Leica AG, Heerbrugg autorisierten Vertretungen oder Servicewerkstätten tätig sind.

Wird dieses Dokument von nicht qualifizierten Servicetechniker und Servicetechnikerinnen verwendet, so lehnt Leica AG, Heerbrugg jegliche Haftung ab für direkte und indirekte Schaden, die durch nicht fachgemäße Anwendung und/oder Interpretation dieses Dokumentes entstehen.

Copyright

Without prior permission in writing by Leica AG, Heerbrugg (Switzerland), this document shall not be reproduced as a whole or in part, by mechanical, photographic, electronic, or other means (including into or transmission in machine-readable form); stored in any retrieval system; used for any purpose other than that/those for which it is intended; nor made accessible or communicated in any form to any third party not expressly authorized by Leica AG, Heerbrugg to have access thereto.

Liability

This document is strictly for the use of qualified service engineers with the requisite technical skills. Only persons who have successfully completed the appropriate service training provided by Leica AG,

Heerbrugg and are in the employ of a Company in the Leica Group or of an agency, distributor, or Service Workshop duly authorized by Leica AG, Heerbrugg have the status of qualified Service engineer.

Leica AG, Heerbrugg accepts no liability whatever for direct or indirect damage that may occur due to the unauthorized or improper use or interpretation of this document by any person who is not a qualified service engineer in accordance with the above definition.

Service Manual M695

Legal questions / Safty-Rechtsfragen / Sicherheit

Doc Code 636 718

09/93 3691-DMF

Für die Servicetechniker und Servicetechnikerinnen gelten folgende Pflichten:

Sie verstehen und befolgen die Sicherheitsinformationen und die Instruktionen auf dem Produkt sowie in der Gebrauchsanleitung.

Sie kennen die ortsüblichen gesetzlichen, betrieblichen und ausserbetrieblichen

Unfallverhütungsvorschriften im Wissen, dass sich diese auf dem aktuellsten Stand

befinden.

• Sie benachrichtigen Leica schriftlich, sobald an der Ausrüstung Sicherheitsmangel

auftreten.

Service technicians have the following obligations:

To understand and follow the safety information and instructions on the product and in the user manual.

To be familiar with local regulations relating to industrial and non-industrial accident prevention in the knowledge that these regulations are up to date.

To inform Leica immediately in writing if the equipment becomes unsafe.

October 94

Leica AG, Heerbrugg

R E V I S I O N

Documentation

: WILD M695 Service manual

 

 

 

 

(Technical description and fault finding)

 

Status

: Edition 09(93

/

Revision, previous: -------

 

 

 

 

 

 

 

 

new: 10/94

 

Reason for revision : M680 control unit (MEL61/62) is compatible with M695

 

Steps to be taken

:

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Section

 

Remove page(s)

Number of

 

Introduce page(s)

 

Number of

 

 

 

 

 

sheets

 

 

 

sheets

 

 

 

 

 

 

 

 

 

 

 

---

 

title

sheet

1

 

title sheet

 

1

 

---

 

index

register

1

 

index register

 

1

 

2

 

 

---

--

 

2-1/2

 

1

 

9

 

9-1 to 9-8

4

 

9-1 to 9-8

 

4

 

19

 

19-1

1

 

19-1

 

1

File

: Insert this sheet (Revision) in section 2.

 

Leica AG

Service Documentation

and Training LSG/SOM/SM

SOM and SM Service News

Surgical Operating Microscopes

No. 10/95

To Service staff

Date/from June 28, 1995 / 3077-HWE

File Workshop binder “Service News” / Service manual M695

Re. M695 surgical microscope in conjunction with multifocus objective 445 944

Leica AG

CH-9435 Heerbrugg

(Switzerland)

Restriction of illuminated area

lnspect the illumination

Multifocus objective on M695:

Readjustment of the illumination

When the multifocus objective is used with the M695, the illuminated area available to the surgeon may be shadowed or vignetted even when the the lamp is correctly adjusted.

When you use the multifocus objective for the first time, inspect the illumination:

Engage the shortest working distance (the shortest focal length).

Engage the lowest zoom position (7).

Inspect the illuminated fields produced by both of the lamps in the lamp changer.

If the illuminated area is noticeably restricted, readjust the lamps.

Readjusting the lamp

The illumination of the field of view is influenced by the distance

 

between the lamp and the condenser lens. This distance can be changed

 

by means of the eccentric stop cam on the lamp changer. To obtain

 

uniform illumination, reduce the distance between the lamp and the

 

condenser lens.

 

Adjust the eccentric stop cam for both lamps in the lamp changer:

 

1. Remove the multifocus objective and push the filter slide of the

 

M695 optics carrier towards the objective. Beneath the filter slide

 

you will find the adjusting screw for the eccentric stop cam.

2 . Using a screwdriver, displace the eccentric stop cam by about oneeighth of a turn so that the lamp can be moved in the direction of the objective.

CAUTION: The lamp may be hot.

3.Switch to the second lamp, and carry out point 2 for this lamp.

4.Refit the multifocus objective and inspect the illumination as described above.

5. If necessary, repeat the adjustment procedure (points 1 - 3).

Leica AG

Service SOM/SM

W. Hammerle

SOM and SM Service News

No. 09 / 95

Leica AG

 

CH-9435 Heerbrugg

To Service staff

(Switzerland)

Date/from May 29, 1995 / BKL-3402

 

File Workshop binder “Service News” / Service Manual M695

 

Refer to Necessary replacement of SOM product “Light intensifier”

 

No. 445 796

 

Delivery of faulty SOM product "Light intensifier” 445 796

Faulty product has to be exchanged

The concerned product has been delivered to the following countries as single part or included in the delivery of optics carriers:

Netherlands, Japan UK, Italy, Australia, USA, Sweden, Canada, Switzerland, Korea, South Africa, Kuwait, Belgium, Spain Columbia, Saudi Arabia, France, Singapore, Finland, Portugal, Germany, Denmark, Algeria, Sudan, Luxembourg, Dominikanische Republic, Hong Kong, Turkey, Brazil, Tunisia, Israel, Austria, Jordanian India.

All other countries are not concerned.

Problem:

Action:

Since market introduction in March 1994 up to March 1995 the concerned product has been delivered faulty (The cement does not withstand the high temperatures at the bulb). It has been delivered as a single part as well as included in the following optics carriers:

M690

optics carrier Mitaka

445 543

M695

optics carrier

445 560

M695

optics carrier Mitaka OH 445 841

Since March 1995 an improved version with the same No. has been delivering. The two versions can be distinguished easily according to the drawing on page two.

The concerned customers are already informed by your Management.

The faulty products have to be replaced, please contact your Marketing responsible for SOM products.

All concerned countries will be supplied automatically without any order with sufficient replacement units, free of charge.

The exchange procedure is very simple and can be achieved by the customer himself as well. If you will not carry out the exchange yourself, supply the customer with sufficient exchange units and Information.

SERNEWSE.DOC

1/2

Service manual M695

Modification

Doc Code 636 718

10/94 3077-HWE

Changes and modifications

M680 control unit (MEL61/62) is compatible with

M695 surgical microscope

. . . from control unit the MEL61/62 can also be used for the M695, provided that earlier lamp serial number 011193001 control PCBs are subjected to a slight modification. This modification was

onwards introduced from March 1993 onwards (Index C on board) (355 980 C).

The functions ZOOM SPEED B, XY-SPEED and POSITION 1/2 are not required for the M695. The positions occupied on the control panel by these switches or potentiometers will be covered over. The covers, and instructions for fitting them, accompany the control unit.

From March 1995 onwards, only the MEL61/62 control unit will be used for the M680 and M695. The previously-used MEL64/65 control unit will no longer be manufactured.

Modification of the is required if both of the following conditions are met: lamp-conbol PCB

1.The MEL64/65 control unit is replaced by an MEL61/62

2.The M695 was despatched before March 1993. The lamp control PCB therefore bears an earlier index than C.

Under these conditions the hand-/footswitches will not react at the control input A or B respectively, depending on the position of the switch "Position 1/2".

Modification: On the soldered side, bridge pins 10 and 12 of P20 with a 100 Ω resistor (1/8W). The resistor shall not come into contact with the housing cover.

2-1

Modifications

Service manuel WILD M695

10/94 3077-HWE

Doc Code 636 718

2-2

Service Manual M680

Introduction

Doc code 556 848

03/93 3077-HWE

 

 

Preconditions

for using this service manual

Intended users

Technical personnel provided by customer or by LEICA agencies, equipped

 

with the testset 566 152 (see Section 18).

What is expected of

Stage 1: Allocation of a fault to one of the main groups:

the person using the

-

Footswitch

Testset?

 

-

Control unit

 

-

Swingarm

 

-

Microscope (optics carrier)

• You have read the user manual and can operate the surgical microscope Directions are given in Sections 3 and 4.

Stage 2: Locating and eliminating errors at module level

You have been trained in the basics of electronics and mechanical engineering

You have been instructed by a technician from your agency or from LEICA AG, HEERBRUGG.

Sections 3,4 and 10

Stage 3: Locating and eliminating errors at board level

You have been trained in the basics of electronics and mechanical engineering

You have taken part in an M690/M695or M680 course.

Sections 3 to 9, and Section 11

3-1

Introduction

Service Manual M680

03/93 3077-HWE

Doc code 656 948

 

 

Legal aspects

Changes/

Service News

Introduction/

User manual

locating faults with the test set (Test box)

Control unit MEL64165 Description of function

To the contents of service manual

This book may only be given to, and used by, certain persons. These are detailed in Section 1.

Place Service News on top of the M695 in Section 2.

CONGRATULATIONS - You are one of those methodical people who also read the important Section 3 of this manual.

If a fault develops, we will guide you to it with the assistance of Section 4 and the test box.

The test set helps you to assign the fault to the:

Footswitch

Control unit

Swingarm

Microscope

The search is then continued at board level with the assistance of block diagrams and the wiring diagram.

The function description in Section 5, in conjunction with the wiring diagram, will lead you to the defective board or cable connection. The swingarm is the interface.

3-2

Service Manual M680

Introduction

Doc code 556 948

03/93 3077-HWE

 

 

 

Swingarm

Description of function

M680 microscope

Description of function

Wiring diagram

Exchanging modules

Exchanging boards

Testing procedure

Test set

The function description in Section 6, in conjunction with the wiring diagram, will lead you to the defective board or cable connection. The swingarm is the interface.

The function description in Section 7, in conjunction with the wiring diagram, will lead you to the defective board or cable connection. The swingarm is the interface.

Section 9 contains the wiring diagram, and a description of the positions of the boards and the plug connections.

Section 10 includes instructions for exchanging those modules which are available as spare parts.

Section 11 includes instructions for exchanging those boards which are available as spare parts.

After modules or boards have been replaced, the instrument must meet specifications. Values and tolerances are laid down in the testing procedure in Section 12.

The test box and service cable, and their circuits, are described in Section 18.

Spare parts

The spare parts, the exchange of which is described in Sections 8 and 9, are

 

listed in Section 19.

Introduction

Service Manual M680

03/93 3077-HWE

Doc code 556 948

 

 

Special tools

Section 20 includes a list of the service equipment which will enable you to

 

carry out the operations described above.

 

No special tools are required. The components making up the test box include

 

a service handswitch and a service cable which serves to bridge the swingann.

3-4

User Manual

Service Manual M695 (CD-ROM)

08/98

Doc code 636 718

 

 

The M695 User Manual is provided as a separate document. To view it, click on this text.

Service manual M695

M695 fault finding

Doc code 636 718

09/93 3077-HWE

 

 

Table of content

M695 fault finding

Chapter

Page

Preparation

4-1

Power supply of control unit

4-3

Functions of handor footswitch

4-4

Supply

of microscope

4-5

Lamp

control

4-7

Zoom

control

4-8

Focus

control

4-9

Service manual M695

M695 Fault finding

Doc code 636 718

09/93 3077-HWE

 

 

 

M695 Fault finding

Preparation

1. Connecting the testbox

Disconnect plug P36 from swingarm

Hook in the testbox to the swingarm and plug in P36 at the testbox.

Connect the testbox cable (green sleeve) with J36 at the swingann. With that the control unit is connected with the microscope through the testbox.

Set switch “MICROSCOPE SELECT” on the testbox to position A.

4-1

M695

Fault finding

Service manual M695

09/93

3077-HWE

Doc code 636 718

2. Settings on the control unit

Adjust Lamp to minimal brightness

4-2

M695 Fault finding

Service manual M695

09/93 3077-HWE

Doc code 638 718

 

 

Functions of handor footswitch

Condition: Malfunction of handor footswitch of only one of the two CONTROL-inputs, A or B

is disturbed.

Replace disturbed handor footswitch ective side A or B by either:

a)Service-handswitch or

b)Hand-/footswitch at the other CONTROL-input

 

Action

Reaction

Possible reason

 

 

 

 

Release functions:

Corresponding LED at

Function

Display does not light

Receiver Board

Connect again original switch

Corresponding LED at Function Handor footswitch

a n d

Display does not light

release functions

 

Service manual M695

M695 Fault finding

Doc code 636 718

09/93 3077-HWE

 

 

Voltage

Action

R e a d i n g

Reaction

Possible fault

 

 

 

 

 

24V M I C R O

1.Lamp to min.brightness

 

2.Lamp to max.brightness

 

3.Lamp back to min.

 

brightness

26V

+-5%

Microscope reacts -

Check supply-

20V

+-5%

but incorrect

lines of 24V and

 

 

 

check PGND -

 

 

 

page 4-6

 

 

Microscope without

Wiring of

 

 

any function

microscope

Switch off, bridge swing-

microscope reacts

Swingarm cable

arm with servicecable and 26V +-5%

switch on again

 

 

 

 

 

Switch off,

Voltage ok

evtl. short circuit

Separate microscope from 26V +-5%

testbox and switch on

 

in the microscope

 

Voltage not ok

Control unit

4-5

M695 Fault finding

Service manual M695

09/93 3077-HWE

Doc code 636 718

 

 

Check lines of Powerground PGND

(Voltage drop on PGND relating to logic ground)

Signal

Action

 

Reading

Reaction

Possible fault

 

 

 

 

 

FOCUS UP

Adjust lamp to maximal

max. -0.8W

If voltage is ok - depending on the incorrect

 

brightness

with standard-

function, check signals of:

 

 

swingarm

 

Lamp control - page 4-7

 

 

cable

 

Zoom control - page 4-8

 

 

 

 

 

Focus control - page 4-9

 

 

 

 

 

 

 

Bridge swingarm with

 

max. -0.8V

Voltage ok

Swingarm cable

 

service cable and adjust

 

 

 

(One of the two

 

lamp to max. brightness

 

 

 

PGND-lines is

 

 

 

 

 

broken)

 

 

 

 

Voltage not ok

One of the two

 

 

 

 

typ. >-1v

PGND-lines in

 

 

 

 

 

the microscope

or control unit is broken.

Important: Adjust lamp again to minimal brightness!

4-6

Service manual M695

M695 Fault finding

Doc code 636 718

09/93 3077-HWE

 

 

Lamp control

Signal

Action

 

 

Reading

Reaction

Possible fault

 

 

 

 

 

 

 

LAMP REF

Adjust lamp to min./max

0.3V / 5V

Voltage ok

Microscope

 

 

brightness

 

+-5%

 

(Lamp Control,

 

 

 

 

 

 

 

Wiring)

 

 

 

 

 

 

 

 

 

Separate

microscope

 

 

 

 

 

from the

testbox,

0.3V / 5V

Voltage ok

Microscope

 

 

adjust lamp to min./max

 

 

brightness

+-5%

 

 

 

 

 

 

 

 

 

 

 

Bridge

swingarm with

 

 

 

 

 

service

cable,

0.3V / 5V

Voltage ok

Swingarm cable

 

 

adjust lamp to min./max

 

 

brightness

+-5%

 

 

 

 

 

 

 

 

Voltage not ok

Control unit

 

Important: Adjust Iamp again to minimal brightness!

4-7

M695 Fault finding

Service manual M695

09/93 3077-HWE

Doc code 636 718

 

 

Zoom control

 

Action

 

 

Heading

Reaction

 

Possible fault

 

 

 

 

 

 

ZOOM SPEED Set min. zoom speed

1.84 ... 2.34V

 

 

 

 

Set max. zoom speed

5V +-5%

 

 

 

ZOOM UP

 

 

>4.75V

 

 

 

 

/footswitch

 

Voltages ok, but

Microscope

 

 

 

 

 

 

non-actuated

 

<0.2V

reacts incorrect

(Logic board.

 

 

 

 

 

 

 

Zoom servo,

 

 

 

 

 

 

 

wiring)

ZOOM DN

 

 

>4.75v

 

 

 

 

/footswitch

 

 

 

 

 

non-actuated

 

<0.2v

 

 

 

 

Separate microscope

see above

Voltages

ok

Microscope

 

from the testbox and

 

check

signals

 

 

 

 

(short circuit on

 

 

 

 

 

 

 

Zoom servo or

 

 

 

 

 

 

 

wiring)

 

Bridge

swingarm

with

 

 

 

 

 

servicecable and

verify

see above

Voltages

ok

Swingarm cable

 

signals

 

 

 

 

 

 

 

 

 

 

 

Voltages not ok

Control unit

 

 

 

 

 

 

 

 

4-8

Service manual M695

M695 Fault finding

Doc code 636 718

09/93 3077-HWE

 

 

 

Focus control

Select microscope side A or B:

Select A or B, depending on which side the zoom works incorrect

Select A if the fault appeares on both sides, A and B.

 

Action

Reading

Reaction

Possible fault

 

 

 

 

 

 

 

FOCUS SPEED set min. focus speed

 

 

 

1.25 . . . 1.27V

 

 

 

 

 

set max. focus speed

5v +-5%

 

 

 

 

FOCUS UP

 

 

 

 

 

 

/footswitch

>4.75V

 

 

Voltage ok, but

Microscope

 

 

<0.2V

 

 

 

non-actuated

 

 

reacts incorrect

(Focus servo,

 

 

 

 

 

 

wiring)

FOCUS DN

 

 

 

 

 

 

/footswitch

>4.75V

 

 

 

 

 

non-actuated

<0.2V

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Separate microscope

see above

 

 

 

from the testbox and

Voltages ok

Microscope

 

check signals

 

 

 

 

(short circuit on

 

 

 

 

 

 

Focus servo or

 

 

 

 

 

 

wiring)

 

 

 

 

 

 

 

 

Bridge swingarm with

 

 

 

 

 

 

servicecable and verify

see above

Voltages ok

Swingarm-

 

signals

 

 

 

 

cable

Voltages not ok

Control unit

M695 Fault finding

Service manual M695

09/93 3077-HWE

Doc code 636 718

 

 

4-10

Service manual M695

Description control unit MEL64/65

Doc code 636 718

09/93 3077-HWE

 

 

Description of functions

MEL64/65 control unit

Chapter

Page

Introduction

5-1

Power

supply

5-3

Lamp

control

5-9

Zoom

control

5-11

Focus

control

5-15

Service manual M695

Description of control unit MEL64/65

Doc code 636 718

09/93 3077-HWE

 

 

Description of functions

MEL64/65 control unit

The description is subdivIded for the main groups:

Control unit MEL64/65 - Section 5

Swingarm MSV136/137 - Section 6

M695 microscope - Section 7

The control circuits for zoom, focusing and XY-gear

are located partly in the control unit and partly in the microscope itself. Their functions are described in the following sections 5 and 7.

The swingarm cable

is the electrical link between the control unit and the microscope, and is therefore the ideal place to start looking for faults at the level of the main groups.

The test box is introduced between the swingarm and the microscope. It can be used to study the supply voltages, control signals and control levels, all of which are transmitted through the swingarm cable. Section 6 includes a list of these signals.

5-1

Description of control unit MEL64/65 09/93 3077-HWE

Notes

Service manual M695 Doc code 636 718

Service manual M695

Description of control unit MEL64/65

Doc code 636 718

09/93 3077-HWE

 

 

 

Power supply MEL64/65

 

Control elements /displays

Pages

24V supply

Red LED on panel board indicates

5-6

for microscope and XY-gear

defective fuse

 

10V supply

Green LED on panel board shows 10V

5-6

for potentiometer and receiver board

O K

 

5V supply

LED “5V” OK on function display

5-7

for logics of receiver board and foots-

witch or handswitch

 

 

Ground

PGND: Microscope ground

Yellow LED on panel board indicates

5-7

 

switch-off caused by excess current

 

SENS

Logics (ground) microscope

5-7

GND_XY: XY ground

 

 

Description of control unit MEL64/65 09/93 3077-HWE

Service manual M695 Doc code 636 718

Service manual M695

Description of control unit MEL64/65

Doc code 639 718

09/93 3077-HWE

 

 

 

Description of control unit MEL64/65

Service manual M695

09/93 3077-HWE

Doc code 636 718

 

 

Control-LEDs

On the panel board:

10V OK: green LED shines

>5A on 24V (PGND): yellow LED shines

Fuse interrupted: red LED shines

and on the function display:

5V OK: green LED shines

24V supply

The 24V supply powers the servo board via the receiver board, and the

 

microscope via the swingann.

 

The fuse for the unstabilized main supply voltage is on the panel board

 

(6.3AT). The red LED indicates a burnt fuse.

Limitation of excess

The loading at maximum lamp brightness is about 3.25A. The yellow LED

current

on the panel board indicates switching off as a result of excess current (5A)

 

at PGND.

10V supply

A switching regulator on the panel board reduces the 24V to 10V. The power

 

for the potentiometer (5V) is derived from it. The 5V regulator on the

 

RECEIVER BOARD is supplied with 10V.

5-6

Service manual M695

Description of control unit MEL64/65

Doc code 636 718

09/93 3077-HWE

 

 

5V supply Receiver board

PGND, SENS and logics ground

SENS

An LED on the function display shows 5V OK. The following are supplied with power: Handswitch or f&switch, and logics on receiver board.

Microscope ground (PGND) and SENS are connected in the microscope. The high lamp current produces a voltage drop of about 0.6V at PGND. This voltage is passed to the control unit through SENS.

For the reason indicated above, Logic ground is about 0.6V below PGND in the microscope. The voltage drop at PGND influences the level of the control signals.

All control signals to the microscope are measured with the testbox in relation to SENS. SENS is connected to GND trough a 20-Ohm resistance at panel board.

5-7

Description of control unit MEL64/65 09/93 3077-HWE

Notes

Service manual M695 Doc code 636 718

Service manual M695

Description of control unit MEL64/65

Doc code 636 718

09/93 3077-HWE

 

 

 

Lamp control MEL64/65

Tasks

Control element/display

Pages

Setting the lamp brightness

Potentiometer on control unit

5-10,7-3

Limiting excess current

Measurement resistor

on

7-3

 

LAMP CONTROL

in

microscope

5-9

Description of control unit MEL64/65

Service manual M695

09/93 3077-HWE

Doc code 636 718

 

 

Reference for lamp regulator

The voltage level LAMP REF depends on the position of the brightness potentiometer. LAMP REF is passed via the receiver board and the swingarm cable to the lamp control board in the microscope, where it forms the reference value (required value) of the lamp regulator.

5-10

Service manual M695

Description of control unit MEL64/65

DOc code 636 718

09/93 3077-HWE

 

 

 

 

Control elements / display

 

Using motor to set zoom position

Footswitch or handswitch

5-14,7-6

 

Function display

 

 

Up/down-LED on zoom servo

 

Presenting zoom adjustment speed

Zoom speed potentiometer

5-14,7-8

5-11

Description of control unit MEL64/65

Service manual M695

09/93 3077-HWE

Doc code 636 718

 

 

5-12

Service manual M695

Description of control unit MEL64/65

Doc code 636 718

09/93 3077-HWE

 

 

5-13

Description of control unit MEL64/65

Service

manual M695

09/93 3077-HWE

Doc

code 636 718

 

 

 

 

Control LEDs

Using the motor to set the zoom position

The function display tells you whether the signals from the footswitch or handswitch are being correctly received and interpreted:

for ZOOM UP

for ZOOM DOWN

The handswitch or the footswitch transmits on RD_2 or RD_3 the codes which correspond to the functions:

Data format:

ASCII 8-bit with start bit

repeating at 2.3-millisecond intervals

+5W/-8V

The logics on the receiver board (processor) assign the codes received to their appropriate functions:

ZOOM UP

ZOOM DOWN

Presetting the zoom displacement speed

The control signals (0V/5V) for ZOOM UP and ZOOM DOWN reach the logics board in the microscope via the swingarm cable.

The voltage level of ZOOM SPEED depends on the position of the potentiometer on the panel board.

 

Level of ZOOM SPEED

min. ZOOM SPEED

2.10V +- 0.25V

 

 

max. ZOOM SPEED

5V +- 5%

 

 

5-14

Service manual M695

Description of control unit MEL64/65

Doc code 636 718

09/93 3077-HWE

 

 

Focus control MEL 64/65

Tasks

Control

elements/display

Pages

 

Motorized focusing

Footswitch or handswitch

5-18,7-

 

Functiondisplay

 

 

 

Up/down-LED on focus servo

 

 

Presetting speed of focusing

Focus speed potentiometer

5-18,7

-

Travelling to centre position

Footswitch or handswitch

5-19,7

-

after switching on or resetting

Reset switch on motor driven

 

 

 

objectiv

(MOBxxx)

 

 

5-15

Description of control unit MEL64/65

Service manual M695

03/93 3077-HVVE

Doc code 636 718

 

 

 

 

5-16

Service manual M695

Description of control unit MEL64/65

Doc code 636 718

09/93 3077-HWE

 

 

 

5-17

Description of control unit MEL64/65

Service manual M695

03/93 3077-HWE

Doc code 636 718

 

 

ControI LEDs

The function display

tells you whether the

signals from the footswitch or

 

handswitch are being

correctly received and

interpreted:

for FOCUS UP

for FOCUS DOWN

for CENTER POSITION

Motorized focusing

The handswitch or footswitch transmits on RD_2 or RD_3 the codes which

 

correspond to the functions:

 

Data format:

ASCII 8-bit with start bit

repeating at 2.3-millisecond intervals +5V/-8V

The logics on the receiver board (processor) assign the received codes to their appropriate functions:

FOCUS UP

FOCUS DOWN

CENTER POSITION

Presetting the focusing displacement speed

The control signals (0V/5V) for FOCUS UP and FOCUS DOWN reach the logics board in the microscope via the swingarm cable.

The voltage level of FOCUS SPEED depends on the setting of the potentiometer on the panel board.

 

 

 

min. FOCUS SPEED

max. FOCUS SPEED

 

 

 

 

 

Zoom

position

25

0.5V-0.7V

2.1V +-5%

 

 

 

 

 

Zoom

position

<8

1.25V-1.7V

5V +-5%

 

 

 

 

 

5-18

Service manual M695

Description of control unit MEL64/65

Doc code 636 718

09/93 3077-HWE

 

 

 

Travelling to mid-position This function is activated from the handswitches or footswitches A and B, using the key (SL->). A timer (Monoflop) sets FOCUS SPEED to GND potential for about 30 milliseconds, using a transistor.

The impulse is recognized on the focus servo in the motor driven objectiv (MOBxxx), and the system is steered to the mid-position.

Description of control unit MEL64/65

Service manual M695

09/93 3077-HWE

Doc code 636 718

 

 

Notes

5-20

Service manual M695

Description swingarm MSV136/137

Doc code 636 718

09/93 3077-HWE

 

 

Table of content

List of signals for swingarm MSV136/137

Chapter

Page

Power supply

6-1

Microscope control

6-3

Service manual M695

Description swingarm MSV136/137

Doc code 636 718

09/93 3077-HWE

 

 

List of signals for swingarm MSV 136/137

Required values for standard two-metre swingarm cable

Unless otherwise indicated, set the lamp to minimum brightness, because the values quoted are only valid under these conditions.

Power supply

SIGNAL

VALUE

TOL.

Voltage against PGND

26V

+-5%

Lamp min. brightness ->

Voltage against PGND

20V

+-5%

Lamp max. brightness ->

Voltage against SENSE

-50mV

 

Lamp min. brightness ->

 

Voltage against SENSE

-250mV

 

Lamp max. brightness ->

 

Voltage drop against logics level

4.9V

-0.2v

Lamp min. brightness: ->

(Test box: Microscope

 

 

Setting: Focus up)

 

 

Voltage drop against logics level

4.2V

-0.8V

Lamp max. brightness ->

(Test box: Microscope

 

 

Setting: Focus up)

 

 

6-1

Description swingarm MSV136/137

Service manual M695

09/93 3077-HWE

Doc code 636 718

 

 

Current consumption

Lamp min. brightness

150mA

Microscope

Quick-change lamp mount disengaged

50mA

 

Lamp max. brightness

3.5A

 

Guiding value

Service manual M695

Description swingarm MSV136/137

Doc code 638 718

09/93 3077-HWE

 

 

Microscope control

All signals are measured against SENSE

Unless otherwise indicated, set the lamp to minimum brightness

SIGNAL

CONDITIONS

VALUE

TOL.

LAMP REF

Lamp min./max. brightness

0.3...5V

+-5%

FOCUS SPEED

Min./Max.

1.25...1.7V / 5V +-5%

FOCUS UP

Low/High

<0.2V / >4.75V

 

FOCUS DN

Low/High

<0.2V / >4.75V

 

ZOOM SPEED

min./max.

1.84...2.34V / 5V +-5%

ZOOM UP

Low/High

<0.2V / >4.75V

 

B ZOOM DN

Low/High

<0.2V / >4.75V

 

6-3

Description swingarm MSV136/137

Service manual M695

09/93 3077-HWE

Doc code 636 718

 

 

6-4

Service manual M695

Description microscope M695

Doc code 636 718

09/93 3077-HWE

 

 

Table of content

Description of functions

M695 microscope

Chapter

Page

Power

supply

7-l

Lamp

control

7-3

Zoom

control

7-5

Focus

control

7-9

Service manual M695

Description microscope M695

Doc code 636 718

09/93 3077-HWE

 

 

 

Power Supply

M695 microscope

For functions of control unit, refer to page 5-3

Tasks

Page

24V-Supply

7-2

Ground

7-2

PGND, SENS

7-1

Description microscope M695

Service manual M695

09/93 3077-HWE

Doc code 636 718

 

 

24V supply

Lamp Control

 

Zoom Servos A+B

 

Focus Servos A+B and

 

The final stages for lamp, zoomand focusing motor, is supplied with 24V

 

on these boards, via switching regulators.

PGND, SENS and

Microscope-Ground (PGND) and SENS are linked within the microscope.

Logics-Ground

The high lamp current causes a voltage drop of about 0.6V to PGND. This

 

 

voltage is passed to the control unit through SENS.

Situation up until July

For the reason indicated above, Logics-Ground is about 0.6V below PGND

1993 ...

in the microscope. The voltage drop at PGND affects the level of the control

 

 

signals, and so longer swingarm cables than the standard ones can result in

 

 

malfunctioning.

 

New situation as from

Logics-Ground in the control unit is connected to SENSE and so is partly

August 1993

dependent on PGND. The effect on the control signals is therefore less and

 

 

longer swingarm cables can be used.

 

 

 

Service manual M695

Description microscope M695

Doc code 636 718

09/93 3077-HWE

 

 

Lamp control

M695 microscope

For functions of control unit, refer to page 5-9

Tasks

Control elements / displays

Page

Setting the lamp brightness

Control unit

7-4

Limiting the excess current

Measuring resistor on LAMP CONTROL

7-4

Description microscope M695

Service

manual M695

09/93 3077-HWE

Doc

code 636 718

 

 

 

 

Adjusting the lamp brightness

Limiting the excess current

A pulse-width modulator, dependent on the level of LAMP REF. controls the final-stage transistors. The voltage is smoothed with chokes and electrolytic condensers and the electricity is conducted to the lamp.

The secondary voltage is compared with the required value (LAMP REF) at the entrance of the regulator.

The lamp current produces a voltage drop across resistor R9 in Lamp-Ground (LGND). The regulator measures this voltage drop and limits the current to 5A during the final stage.

Service manual M695

Description microscope M695

Doc code 636 718

09/93 3077-HWE

 

 

Zoom control

M695 microscope

For functions of control unit, refer to page 5-11

Tasks

Control elements /displays

Page

Setting zoom position with motor

LEDs:

7-6

 

ZOOM UP + DOWN

 

Recognizing end of range

Light barriers on ZOOM SERVO

7-7

Presetting zoom displacement speed

Control unit

7-8

7-5

Description microscope M695

Service

manual M695

09/93 3077-HWE

Doc

code 636 718

 

 

 

 

Control LEDs

Yellow LEDs on the zoom servo board for the signals

ZOOM UP

ZOOM DOWN

Using motor to set zoom The control signals (0V/5V) for ZOOM UP and DOWN reach the zoom board position... via the swingarm cable and lamp control board in the microscope. ZOOM UP/DOWN activates the final-stage transistors on the zoom servo board. The end-stage comprises a bridging circuit of transistors. In accordance with the direction of displacement the transistors are activated by two: T1 and T3, or

T2 and T4.

Service manual M695

Description microscope M695

Doc code 636 718

03/93 3077-HWE

 

 

Recognizing end of range An encoder disk rotates with the zoom gear. The white field on the disk is marking the limit area. It is sensed by two light barriers located on the zoom servo.

If one of both light barriers senses the white field, through a gate the transistor bridge is blocked for that direction of displacement.

Before removing the encoder disk: Mark the disks position at its flange. The adjustment of the disk is described in section 11 - “Replacing boards” (Zoom servo).

Description microscope M695

Service manual M695

09/93 3077-HWE

Doc code 636 718

 

 

Presetting the zoom displacement speed

The displacement speed is adjusted by means of the supply voltage for the zoom motor. The final stage only has a switching function. The ZOOM SPEED level is the reference for the voltage regulator on the zoom servo board.

The regulator has a positive current feedback, and so the motor voltage increases with the load. The current through the final stage is limited to about 150mA.

Service manual M695

Description microscope M695

Doc code 636 718

09/93 3077-HWE

 

 

 

Focus control

M695 microscope

For functions of control unit, refer to page 5-15

Tasks

Control elements /displays

Page

Motorized focusing

Control unit

7-12

Recognizing end of range

Light barriers on FOCUS SERVO

7-12

Presetting the focus displacement speed

Control unit

7-12

Travelling to the mid-polnt

Focus reset switch

7-12

 

Control unit

 

Description microscope M695

Service

manual M695

09/93 3077-HWE

Doc

code 636 718

 

 

 

 

Service manual M695

Description microscope M695

Doc code 636 718

09/93 3077-HWE

 

 

 

7-11

Description microscope M695

Service manual M695

09/93 3077-HWE

Doc code 636 718

 

 

 

Motorized focusing

The control signals (0V/5V) for A/B FOCUS UP and A/B FOCUS DOWN

 

pass through the swingarm cable and the Lamp Servo to reach Zoom Servo

 

at the microscope. ZOOM UP/DOWN activates the end-stage transistors in

 

the zoom servo board. The end-stage consists of a bridging circuit of transi-

 

stors, and so the motor can drive the focusing mechanism in both senses of

 

rotation.

Recognizing end of range

Presetting the focus displacment speed

Travelling to the mid-position

Reflexive light barriers sense 2 encoder tracks at the circumference of the focus gear: UP/DOWN+CENTER and LIMIT.

With the light barrier UP/DOWN, through gate 2 or 5, the direction of the arrived limit position is decoded. Through gate 2 or 5 LIMIT blocks FOCUS UP or DOWN at the following NAND-gate. The final stage is then blocked for that direction.

The displacement speed is altered with the supply voltage for the focus motors. The final stage only has a switching function. The FOCUS SPEED level is the reference for the voltage regulator on the focus servo board.

The current through the final stage is limited to about 140mA.

Triggered by:

Pressing key “Center Position” at the focusing unit

Switching on the microscope.

30ms-pulse to FOCUS SPEED from control unit. The comparator recognizes when FOCUS SPEED is at GND potential.

The following functions are activated as a result:

1.The selflock circuit is triggered. Gate 2 and 5 block FOCUS UP and DOWN to the final stage. The voltage supply for the focusing motor is switched to maximal speed.

2.Lightbarrier UP/DOWN+CENTER senses, at which side from mid-posi- tion the focus gear is staying. Through gate 3 or 4 the final stage is controlled - the motor drives the focus gear toward mid-position...

3. ...until the light barrier on the sensor board detects the crossing from dark to bright at mid-position. The selflock cicuit is reset (Clr) - the motor stops.

7-12

Service Manual M695

Verdrahtung/Wiring

Doc Code 636 718

10/94 3077-HWE

 

 

Referenz auf Steckverbinder

Reference to connectors

Wo im Instrument die Steckverbindungen zu finden sind erfahren Sie anhand dieser Liste und der nachfolgenden Seiten.

The location of connectors is shown by the list, referring to following pages.

Steckverb.

Seite

Einheit

 

Connector

Page

Unit

 

P1

9-4,9-5.9-6

Steuergerät - Control unit MEL64/65

JP2

9-6

Steuergerät - Control unit MEL64/65

JP3

9-6

Steuergerät - Control unit MEL64/65

JP6

9-6

Steuergerät -

Control unit MEL64/65

JP7

9-6

Steuergerät -

Control unit MEL64/65

JP8

9-6

Steuergerät - Control unit ME!L64/65

JP9

9-6

Steuergerät - Control unit MEL64/65

JP12

9-7

Steuergerät - Control unit MEL64/65

JP14

9-6

Steuergerät - Control unit MEL64/65

J16

9-4.9-5,9-6

Steuergerät - Control unit MEL64/65

J17

9-4,9-5,9-6

Steuergerät - Control unit MEL64/65

JP18

9-7

Steuergerät - Control unit MEL64/65

J19

9-4,9-5,9-6

Steuergerät - Control unit MEL64/65

P19

9-8

Schwenkarm - Swingarm MSV 136/137

JP20

9-10

Mikroskop - Microscope M695

JP21

9-10

Mikroskop - Microscope M695

JP22

9-10

Mikroskop - Microscope M695

VerdrahtunglWiring

Service Manual M695

10/94 3077-HWE

Doc Code 636 718

 

 

Steckverb.

Seite

Einheft

Connector

Page

Unlt

JP23

9-10

Mikroskop - Microscope M695

JP25

9-11

Mikroskop - Microscope M695

JP26

9-11

Mikroskop - Microscope M695

J27

9-4,9-5,9-6

Steuergerät - Control unit MEL64/65

JP30

9-11

Mikroskop - Microscope M695

J32

9-12

Mikroskop - Microscope M695

P32

9-10

Mikroskop - Microscope M695

JP33

9-12

Mikroskop - Microscope M695

J36

9-9

Schwenkarm - Swingam MSV136/137

P36

9-10

Mikroskop - Microscope M695

J37

9-9

Schwenkarm - Swingarm MSV136/137

Service Manual M695

Verdrahtung/Wiring

Doc Code 636 718

10/94 3077-HWE

 

 

Referenz auf Boards

Reference to boards

Boards finden Sie anhand der Liste und der nachfolgenden Abbildungen.

The location of boards is shown by the list, referring to following pages.

Board

Seite

 

Page

Focus Servo

9-12

Function Display

9-6

Lamp Control

9-10

Panel Board

9-7

Receiver Board

9-6

Zoom Servo

9-11

XY Servo Board

9-6

Einheit

Unit

Mikroskop - Microscope M695

Steuergerät - Control unit MEL61/62, MEL64/65 Mikroskop - Microscope M695

Steuergerät - Control unit MEL61/62, MEL64/65

Steuergerät - Control unit MEL61/62, MEL64/65 Mikroskop - Microscope M695

Steuergerät MEL61/62 - Control unit MEL61/62 keine Funktion im M695 - no function with M695

Verdrahtung/Wiring

Service Manual M695

10/94 3077-HWE

Doc Code 636 718

 

 

Steuergerät MEL61/62 - Anschlussplatte

Control unit MEL61/62 - Connector panel

Service Manual M695

Verdrahtung/Wiring

Doc Code 636 718

10/94 3077-HWE

 

 

 

Steuergerät MEL64/65 - Anschlussplatte

Control mit MEL64/65 - Connector panel

Verdrahtung/Wiring

Service Manual M695

10/94 3077-HWE

Doc Code 636 718

 

 

Steuergerät MEL61/62 und MEL64/65 - Rückwand

Control unit MEL61/62 and MEL64/65 - Rear section

Service Manual M695

Verdrahtung/Wiring

Doc Code 636 718

10/94 3077-HWE

 

 

 

Steuergerät MEL61/62 und MEL64/65 - Front

Control unit MEL61/62 and MEL64/65 - Front section

Verdrahtung/Wiring

Service Manual M695

Doc Code 636 718

09/93 3077-HWE

 

Schwenkarmkabel - Stecker zum Steuergerät

Swing arm cable - Connector to control unit

Service Manual M695

Verdrahtung/Wiring

Doc Code 636 718

09/93 3077-HWE

 

 

Schwenkarmkabel - Stecker zum Mikroskop M695

Swing arm cable - Connector to microscope M695

Verdrahtung/Wiring

Service Manual M695

09/93 3077-HWE

Doc Code 636 718

 

 

Mikroskop M695 - Ansicht auf U-Träger

Microscope M695 - View to U-carrier

Service Manual M695

Verdrahtung/Wiring

Doc Code 636 718

09/93 3077-HWE

 

 

Mikroskop M680 -Ansicht auf Zoom Servo

Microscope M680 - View to zoom servo

V e r d r a h t u n g / W i r i n g

Service

Manual M695

09/93 3077-HWE

Doc

code 636 718

 

 

 

 

Mikroskop M695 - Ansicht auf motorische Fokussierung (MOB)

Microscope M695 - View motorized focusing (MOB)

Service Manual M695

Replacing

modules

Doc Code 636 718

09/93

3691-DMF

 

Contents

 

Page

Replace X-Y slide

10-1

Replace gas spring of swingarm

10-2

Replacing swingarm cable

10-5

Service Manual M695

Replacing

modules

Doc Code 636 718

09/93

3691-DMF

Replace X-Y slide

Remove 2 screws (1) and cover (2).

Remove 6 hollow screws (3) and X-Y slide (4).

After each manipulation, inspect the functioning.

Replacing modules 09/93 3691-DMF

Service Manual M695

Doc Code 636 718

Replace gas spring of swingarm MSV136/137

Set counterbalance to "10". Remove 2 screws

(1) and parallel bar (2).

Remove washer (3) and parking piece (4).

Note:

The hole-to-hole distance of the parallel bar can be set by turning the eccentric sleeve (5)

Service Manual M695

Doc Code 636 718

Replacing modules 09/93 3691-DMF

Release screw (1), disengage safety hook (2). Pull swingarm down until spindle (3) and screw

(4) are tension-free.

Remove spindle (3), screw (4) and parallel bar

(5).

Replacing modules 09/93 3691-DMF

Service Manual M695

Doc Code 636 718

Remove spacer ring (1), safety ring (2) and pin

(3).

Assembly:

Fit pin (3) with longer end towards safety hook.

Remove gas spring (4) from mount (5) and unscrew it.

Assembly:

Screw gas spring fully in and then unscrew by up to ½ turn until swingarm bearing and gasspring bearing coincide.

Service Manual M695

Replacing modules

Doc Code 636 718

09/93 3691 - DMF

 

 

 

Replacing swingarm cable

Screw off cover ring (1) and cut off cable tie (2) from cable duct (3).

Remove 2 screws (4) and extract plug plate (5) complete with Lemo plug.

Open AMP plug and push contact pins out to the rear.

Pull cable out from swingarm.

Note:

Tie a 1.5-metre long string to the cable so that it is easier to pull in.

Assembly:

Bundle together the contact pins of the new cable and bind them with adhesive tape. Raise the swingarm to its highest position and pull in the cable.

Secure cable duct (3) with a cable tie, one metre away from the AMP plug.

Service Manual M695

Replacing boards

Doc Code 636 718

09/93 3691-DMF

 

Contents

 

Page

Motorized focusing

 

Focus servo board

11-1

M 6 9 5

 

Replace lamp-control board

11-2

Control unit

 

Replacing panel board

11-3

Replacing receiver board

11-4

Replacing display board

11-4

Service Manual M695

Replacing boards

09/93 3691-DMF

Doc Code 636 718

 

Motorized focusing

Focus servo board for motorized focusing

Remove 6 screws (1), adapter (2) and upper part of housing (3).

Remove 6 screws (4). Raise focus servo board

(5). Pull out plug J33.

After each manipulation, inspect the functioning.

Replacing boards

Service Manual M695

09/93 3691-DMF

Doc Code 636 718

M695 optics carrier

Replace lamp-control board

Remove 3 screws (1) and bracket (2).

Pull out 4 plugs (3), Remove 2 countersunk screws (4), 2 cheese-head screws (5) and the lamp-control board (6).

Service Manual M695

Replacing boards

Doc Code 636 718

09/93 3691-DMF

Control unit MEL64/65

Replacing panel board

Remove 4 screws with washers (1). Remove knob cover (2) and knobs (3). Open front cover

(4).

Pull out 2 plugs. Unscrew and remove 4 screws

(5). Remove panel board (6).

Assembly:

The maximum permissible gap between knobs and front cover is 0.5mm.

Adjust the rotation range of the knobs.

Replacing boards 09/93 3691-DMF

Service Manual M695

Doc Code 636 718

Replacing receiver board

Remove spacer nut (1). Pull plug out from receiver board (2). Remove receiver board.

Replacing display board

Remove 2 screws with washers (3), and take out function display (4)

Assembly:

Align LEDs with display window.

Service Manual M695

Inspection procedure

Doc Code 636 718

09/93 3691-DMF

Contents

Section

Page

1. Inspecting the hand- / footswitch functions and function

12-l

 

display on the MEL64/65:

2.

Lamp control:

12-4

3.

ZOOM

control:

12-4

4.

FOCUS

control:

12-5

5.

Optics

 

12-6

6.

Tiltable joint / swingarm

12-6

 

Test report

12-7

Service Manual M695

Inspection

procedure

Doc Code 636 718

09/93

3691-DMF

Test plan for M695 surgical microscope

Always pull out the power plug before opening the control unit!

Assemble the M695 surgical microscope in accordance with the user manual, but disconnect all cables.

Inspect the M695 system, using the test box (Test set M695/M680, stock no. 566 152)

1.1Connect the hand- /footswitch (6 functions) and the power plug to the MEL 64/65.

The plugs must go in and out without difficulty.

1.2Activate the power switch of the MEL64/65.

The control unit switches on and the indicator lamp in the power switch shines.

The 5V LED on the function display shines.

The ML LED on the function display shines.

If the control unit does not switch on:

Inspect the power cable and the power connection Inspect the fuse on the panel board inside the control unit

(see wiring plan in section 9 and power unit defect search procedure on page 4-3)

(Power unit defect search procedure, page 4-3)

Inspection procedure

Service Manual M695

09/93 3691-DMF

Doc Code 636 718

1.3Activate the footor handswitch functions.

The appropriate LED on the function display shines.

(If a fault arises, exchange the footor handswitch and repeat the inspection procedure. If there is still a fault, then its source is to be found in the MEL64/65 control unit.)

(Fault location in hand-/footswitch functions, page 4-4)

ML on/off

M i c r o s c o p e l a m p M L

A on/off

Additional illumination A

Focus up

Focus down

Zoom up

Zoom down

1.4Connect cables of microscope and swingarm,

• The plugs must go in and out without difficulty.

Service Manual M695

inspection procedure

Doc Code 636 718

09/93 3691-DMF

Preparation: Connect test box.

Separate plug connection J/P36 on swingarm.

Hang test box on to swingarm. Connect plug P36 from test box to swingarm, and from M695 microscope to test box.

Set test box switch "MICROSCOPE SELECT" to A.

Inspection procedure

Service Manual M695

09/93 3691-DMF

Doc Code 636 718

2.1Turn LAMP potentiometer on control unit from min. to max.

Reading on test box: LAMP REF.

min./max. 0.3......5v.

 

The brightness of the microscope lamp is continuously adjustable.

2.2Activate the quick-change lamp mount.

The spare bulb is moved into the beam path, and lights up.

The orange indicator springs out.

(Push the orange indicator back into the rear wall)

(Fault location in lamp control: page 4-7)

3.1Turn the ZOOM SPEED potentiometer from min. to max. and from max. to min.

Reading on test box: ZOOM SPEED

min./max 1.84...2.34Vl5V ±5%

 

The zoom speed is continuously adjustable.

 

3.2Use foot-/handswitch to activate ZOOM UP.

Reading on test box: ZOOM UP

Low/High <0.2V/>4.75V

3.3Use foot-/handswitch to activate ZOOM DN.

Reading on test box: ZOOM DN

Low/High <0.2V/>4.75V

(Fault location in ZOOM control: page 4-8)

3.4Mechanical zoom movement.

Zoom moves uniformly in both directions.

Reading on test box: FOCUS DN

Service Manual M695

Inspection

procedure

Doc Code 636 718

09/93

3691-DMF

3.5Inspect zoom range.

Travel to zoom end positions 7 and 36 using max. SPEED. Zoom should not touch mechanical stop. Relevant magnification is seen centred in window.

4.1Turn FOCUS SPEED potentiometer from min. to max. and from max. to min.

Reading on test box: FOCUS SPEED

min./max. 1.25...1.7V/5V ±5%

 

The focus speed is continuously adjustable.

 

4.2Use foot-/handswitch to FOCUS UP.

Reading on test box: FOCUS UP

Low/High <0.2V/>4.75V

4.3Use foot-/handswitch to FOCUS DN.

(Fault location in FOCUS control: page 4-9)

4.4Mechanical focus movement

Focus moves uniformly in both directions.

4.5Activate yellow knob on motorized focusing: FOCUS reset

Focus automatically returns to basic position.

(Use FOCUS UP and DN to travel away from basic position, and repeat test)

Inspection procedure

Service Manual M695

09/93 3691-DMF

Doc Code 636 718

5.1 Cleanliness of optical components

All surfaces of optical components in the observation and illumination beam paths must be clean,

5 . 2 Z o o m

Focus on the object and operate ZOOM UP and ZOOM DOWN at their minimum speeds.

The image sharpness should remain constant over the entire zoom range.

lThe image should not jump suddenly when ZOOM UP and ZOOM DOWN are being operated.

6.1Rotation

The tiltable joint must be easily and smoothly tumable after the brake has been released.

6.2Brakes

As the braking knob is applied, the movement becomes steadily less free and finally the joint locks completely. When the brake knob is turned the other way, the movement steadily becomes easier.

6.3Clip-on handles

The sterilizable clip-on handles must be convenient to put on and take off again. They must click in and out perfectly.

6.4Gas spring

The vertical adjustment must be smoothly adjustable from one end to the other.

At maximum loading, and with the weight compensation at 10, the swingarm must not drift downwards.

6.5Weight compensation

The adjusting spindle must be adjustable from 0 to 10.

6.6Safety hook

The safety hook must engage faultlessly. When it is moved sideways, the ratchet bolt must remain in position.

Service Manual M695

Prüfprotokoll

Doc Code 636 718

09/93 3691-DMF

Test report for M695 surgical microscope

Customer:

Tested by:

Date:

Stock no.

Description

Serial no.

445 560

Optics carrier M695

445 561

Microscope carrier 45°

445 562

Microscope carrier 45°/70°

445 494

Swingarm MSV136 for floor stand

445

740

Swingarm MSV167 for ceiling mount

445

551

Control unit MEL64 for floor stand

445 552

Control unit MEL65 for ceiling mount

445

365

Objective, mot. foe., f=250mm

445

563

Objective, mot. foe., f=325mm

445

564

Objective, mot. foe., f=275mm

..............

..............

..............

..............

..............

..............

..............

..............

..............

..............

..............

Footswitch (6 functions)

.............

445 203

Handswitch (12 functionsn)

..............

..............

Binocular tube MTU . . . . . . .

..............

Other accessories:

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

..................................................................... .................

.................................................................... .................

..................................................................... .................