Roche Omni C Service manual

POINT OF CARE TESTING

Roche OMNI C

Service Manual

Roche Diagnostics GmbH D-68298 Mannheim / Germany

www.roche.com

The contents of this document may not be reproduced in any form or communicated to any third party without the prior written consent of Roche Diagnostics. While every effort is made to ensure its correctness, Roche Diagnostics assumes no responsibility for errors or omissions which may appear in this document. Subject to change without notice.

REF/No. 03273199001

Rev. 3.0, September 2002

First edition: October 2001

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1 Introduction

2 Revisions

3 Components

4 AutoQC

5 Fluidic procedures

6 Service area

7 Annual maintenance

8 Troubleshooting

9 Index

Service Manual, Roche OMNI C

1 Introduct ion

1 Introduction........................................................ 1-1

1.1 General notes ......................................................................................... 1-1

1.2 Symbols.................................................................................................. 1-1

1.3 Important notes and warni ngs ................................................................ 1-2

1.4 Disinfectants........................................................................................... 1-3

1.4.1 Roche Deproteinizer ..........................................................................................1-3

Composition ............................................................................................................... 1-3

Potential dangers ........................................................................................................1-3

First aid m easures ......................................................................................................1-3

1.4.2 Commercial disinfectants ...................................................................................1-3

1.5 Decontamination..................................................................................... 1-4

1.5.1 Surfaces........................................................................................................... 1-4

1.5.2 Touch screen....................................................................................................1-4

1.5.3 Barcode scanner...............................................................................................1-4

1.5.4 Sample port module ..........................................................................................1-5

1.5.5 Measuring chamber...........................................................................................1-5

1.5.6 Tubing paths.....................................................................................................1-5

1.6 ESD protection measures....................................................................... 1-6

1.6.1 Causes of electrostatic charges .........................................................................1-6

1.6.2 Effects of ESD on electronic componen ts ...........................................................1-6

1.6.3 Why is ESD protection so important today? ........................................................1-7

1.6.4 How can ESD protection be guaranteed?............................................................1-7

1.6.5 Conclusion........................................................................................................1-7

Service Manual, Roche OMNI C, Rev. 3.0, September 2002 1-I

1 Introduct ion

1-II Service Manual, Roche OMNI C, Rev. 3.0, September 2002

1 Introduction

1.1 General notes

This man ual con tains all of the information required for the maintenance and repair of the OMNI C. You must be familiar with the fun ction and operation of the instrument to full y understand the

processes described here. Please refer to the OMNI C Instructions for Use or OMNI C Reference Man ual for th is in forma tion .

Obser ve the s ervi ce an d repair pr ocedur es descr ibed i n th is manu al and use onl y genuin e Roche replacement parts an d Roche-approved materials to guarantee the full functionality of your OMNI C.

For th e order number s of rep lacem ent part s, plea se ref er t o the OMNI C spar e part l ist. Chapter 2 of this manual contains an overview of possible revisions and available software version s.

1.2 Symbols

1 Introduct ion

All sections or text passage s marked wi th this symbol describe procedures that may involve risk of infection.

Sections marked wi th this symbol contain information that must be observed for the prevention of personal injury to patients, users or third parties.

All sections or text passage s that are marked with this symbol describe procedures and/or indicate conditions or dangers that could damage or lead to malfunctions in the Roche OMNI C.

All sections or text passage s marked wi th this symbol refer to situations and/or potential dangers affecting personne l performing the se rvicing or repair work.

All sections or text passage s marked wi th this symbol refer to components t hat require special precautions related to e lectrostatic discharge. Pack aging marked wit h this symbol may only be ope ned by trained personnel (also see page 1-6, section 1, ESD protection measures)

Service Manual, Roche OMNI C, Rev. 3.0, September 2002 1-1

1 Introduct ion

1.3 Importa nt note s and warni ngs

• Never use the analyzer near highly inflammable or explosive gasses (anaesthetic

gasses, e tc.).

• Use only 2-pin, grounded AC power sockets for the instrument.

• Ensure that the A C power cable and plug are in good condition.

Damaged AC cables or plugs must be replaced immediately.

• Switch the instrume nt off and unplug the AC power cabl e before opening its rear

panel.

• Be sure to replace blo wn fuses with new fuses of the same type.

• Always follow the i nstructions in this manual when servicing or repairing the

instrume nt.

• Always use suitable tools and testing equi pment for servicing or re pairs.

• To avoid damage t o the instrument's e lectronic components, prevent l iquids from

entering it.

• To clean the instrument, use lightly moistened tissue or cotton swabs.

1-2 Service Manual, Roche OMNI C, Rev. 3.0, September 2002

1.4 Disinfectants

Use only liquid disinfectant suc h as Roche Deprote inizer or an alcohol -based (about 70%) surface disinfectant.

Do not use sprays, as they may enter the instrument and cause its electronic components to malfunction.

Do not attempt to decont aminate any part of the instrument before shutting it down and unplugging it from the AC power socket.

Before plugging the instrume nt back in and turning it on, always wait 15 minutes to allow the disinfectant to ev aporate. There is the risk of f ire or explosion especi ally in the vicinity of the power supply!

1.4.1 Roche Deproteinizer

1 Introduct ion

Composition

Aqueous NaOCl solution with active chlorine (≤ 2%)

Potential da ngers

Due to the alkaline and oxidizing character of this prepar ation, we cannot rule out local irritation to the skin, eyes, and mucous membranes.

First aid measures

After in ha lati on: Fr esh a ir, drink larg e amount s of water After skin con tact: Wash with large amounts of water, remove contaminated cloth ing After eye con tact: Rinse with large amounts of water , con sult an eye specialist After swallowing: Drink large amounts of water, do not induce vomiting, consult a physician

1.4.2 Commercial disinfectants

Use a comm erci al alcohol -based (70% ) di sinfect an t as a sur face dec ont amin ant. P lease ob serv e th e relevant product information!

Do not use commercial disinfectants to decontaminate the tubing under any circum stances!

Service Manual, Roche OMNI C, Rev. 3.0, September 2002 1-3

1 Introduct ion

1.5 Decontamination

Use the following decontamination procedures to minimize the risk of infection (including hepatitis and HIV) when r epla ci ng pa rt s th at h ave c ome i n con tact wit h bl ood or ot h er bi olog ica l l i qui ds.

Always wear gloves!

Observe section 1.4, Disinfect ants, on page 1-3.

1.5.1 Surfaces

Decon taminate all outside surfaces, including all covers (e.g. the measuring chamber cover, bottle compartment cover , instrument cover) as well as the outside surfaces of the AutoQC module if presen t, with a cl oth m oisten ed with disin fecta nt.

1.5.2 Touch screen

1. Select

"Mo re functio ns – System – Wash and clean – Clean screen". The touch screen will be disabled for 30 seconds. The remaining number of seconds will be displayed on the screen.

2. You may n ow clean th e screen with a cl oth m oist ened wit h dis infecta n t.

3. After 30 seconds have elapsed, the menu will reappear.

1.5.3 Barcode scanner

Decont am inat e the outer sur faces of t he ba rcode sca nn er wi th a cl oth moi sten ed with disin fecta nt.

1-4 Service Manual, Roche OMNI C, Rev. 3.0, September 2002

1.5.4 Sample port module

1. Select

"Mo re functio ns – System – Wash and clean – Clean sampl e port modul e".

2. Open the flap completel y (capillary position).

3. Remove t he sa mple dr ip tr ay and decont amin ate i t usin g a cotton swab dip ped i n di sinfect an t. If the sample drip tray is heavily contaminated, replace it with a new one. Before r epl acin g it, decont amin ate th e samp le dr ip tray with a cott on swa b dipp ed in disinfectant.

4. Open the bottle compartment cover.

5. Remove t he red tube con nect or fr om th e wash p late.

6. Push the wash plate down to unlock and pull it out. (The was h pla te is l ocked a nd cann ot be r emoved when the pl ug is in sert ed.)

7. Decontaminate the wash plate with a cotton swab dipped in disin fectant.

8. Push the wash plat e back in complet el y and at tach the tube p lug.

9. Push the drip tray in.

10. Decontaminate the fill port and the visible part of the needle with a cotton swab dipped in disinfectant.

11. Close the flap to the syringe position (half-opened position).

12. C lean the ti p of the n eedle.

13. C lose th e fla p.

14. Close the bottle compartment cover.

1 Introduct ion

1.5.5 Measuring chamber

1. Remove t he in str ument cover an d open the mea surin g ch amber co ver.

2. Open th e elect r ode locki ng lever an d rem ove the el ectr odes.

3. Clean the mea surin g ch amber wi th a t owel soak ed in disin fecta nt ( e.g. Roch e Depr otein iz er).

4. Reinser t th e el ectr odes.

5. Close th e mea sur ing cha mber cover an d repl ace th e inst rum ent cover .

1.5.6 Tubing paths

To decontaminate the tubing system, use Roche Deproteinizer only!

Press "Mo re functio ns – System – Wash and clean – Automatic rou tin es – Decontaminat e all

tubes" and follow th e on- screen instr uct ion s.

For a detailed descr iption of this procedure, please refer to section 6.1, Decontamination, in th e Roche OMNI C Ins tru ction s for Use.

Service Manual, Roche OMNI C, Rev. 3.0, September 2002 1-5

1 Introduct ion

1.6 ESD pr otec tion me asur es

ESD protection measures are designed to prevent electronic components from being damaged or destroyed by uncont rolled electrostatic discharges.

1.6.1 Causes of electrostatic charges

The most frequent causes of electrostatic charges are friction or the separation of various materials such a s pla sti cs, synt h eti c fi bre s, har d ru bber or p ap er, or el ectr on bea ms i n CRT uni ts .

They can also be ca used with in an object by flexur e or pressu re – such a s the fr icti on of in dividu al fibr es with in a pi ece of fa bric.

The resu ltin g el ectri cal voltag es ma y become a h azar d when "char ged" bodi es or com pon en ts do not have a conductive connection permitting a discharge (poten tial equalization).

The resulting charges generally do not have high energy, but nevertheless may have differences in poten tial of several thousan d volts, resulting in perceptible electr ic shocks or visible sparks.

Example:

• Shoes with rubber soles:

The friction of walking charges th e per son wearing the shoes in relation to the floor. A disch arg e occurs when the per son tou ches an object.

• Cloth ing made of syn thetic fabrics:

Audibl e disch ar ge; sp arks vi sible i n th e dark.

• The formation of electrostatic charges through friction is promoted by dry air.

• This tendency is reduced in high humidity, especially in saturated air.

• The occurrence of electrostatic phenomena is thus especially pronounced in the

winter (northern hemisphere) in centrally heated rooms with low humidity.

1.6.2 Effects of ESD on electronic components

When an electr osta ti cally cha r ged per son t ouches an electr on ic devi ce, th e disch ar ge may ta ke pl ace via t he pin s of an IC or a s emi con du ctor com pon ent . If a di scha rg e t o grou n d is p ossi ble, t he resulting voltage may damage the component.

This would be th e case, for ex amp le, if th e uni t has a conn ecti on t o a protect ive g roun d – thi s therefore also applies to uni ts that are switch ed off, but have th eir AC cables pl ugged in.

Critical situations may also occur when repairing or testing electronic assemblies if they are placed on a mor e or less condu ctive su rfa ce (e.g . ta ble top ) and ar e touch ed b y an elect rost ati call y char ged person . In this case, the discharge may also take place via a critical component con nection.

1-6 Service Manual, Roche OMNI C, Rev. 3.0, September 2002

1.6.3 Why is ESD protection so important today?

In th e past, cu rren t-con tr ol semi condu ctor s (TTL, norma l trans istor s, etc. ) wer e most com monl y used.

Toda y, the pr inci pl e of volta ge cont rol is used a lmost exclus ivel y in MOS an d CMOS comp onen ts that are thus highly sensitive to the effects of externally applied voltages.

The voltages occurring in electrostatic discharges (up to sever al kV!) damage or destroy t he sensitive component inputs.

An additional factor is the shrinking in ternal dimensions of ICs. With the decreasing size of the internal con ductor s, the permissible maximum input voltages are

also becoming lower and the effects of electrostatic disch arges th us becoming ever more critical.

1.6.4 How can ESD protection be guaranteed?

A contin uous disch ar ge must be ensur ed when han dling el ectr oni c assem blies. This can be accomplished as follows:

• When tran spor tin g electr on ic assem blies, be sur e to use E SD prot ecti on pa ckag ing sui ta ble s tor ag e/ shi pp ing pa ck ag ing ( i. e. th e or ig ina l pac ka gin g ma ter ia l).

• Test and r epair elect roni c ass embli es onl y on tabl es wi th ESD mats

• Wear a grou nded ESD wri st str ap.

• Han dle electronic components/assemblies by the edges only. Avoid touch ing printed circuits or

compon ent p ins .

• Do n ot wear shoes with r ubber soles or items of cloth ing containing syn thetic fibres in facilities in whi ch elect r onic equ ipm ent is ser viced .

• If necessa ry, u se a hu midi fier to en sur e optimal humidity (>20% rel.) in the room.

• Take care not to touch assemblies or individual compon ents directly with your han d after

testing.

• When sen ding el ectr onic com ponen ts or assem blies i n for r epair s, alwa ys use E SD pr otecti on packaging of the fault.

to preven t fur th er dama ge that ma y resul t in an incorr ect int erpret ati on of th e cau se

1 Introduct ion

or oth er

1.6.5 Conclusion

Natur all y, not al l prin ted circu it boar ds and elect roni c assem blies requ ire s uch car eful trea tment . An assembly that featur es simple plug con nectors, for example, is insensitive to electrostatic discharge and th erefor e does n ot n eed ES D protecti on p acka gin g.

When in doubt , however, always take ESD pr ecautions!

These a re materi als w ith a ve ry lo w , defined co nduc tivity (10

cannot damage components.

Service Manual, Roche OMNI C, Rev. 3.0, September 2002 1-7

ohms), which do not accumulate charges with friction and thus

1 Introduct ion

1-8 Service Manual, Roche OMNI C, Rev. 3.0, September 2002

2 Revisions

2 Revisions............................................................ 2-1

2.1 Software.................................................................................................. 2-1

2.2 Service Manual ....................................................................................... 2-2

2.2.1 Revision 1.0......................................................................................................2-2

2.2.2 Revision 2.0......................................................................................................2-2

2.2.3 Revision 3.0......................................................................................................2-3

Service Manual, Roche OMNI C, Rev. 3.0, September 2002 2-I

2 Revisions

2-II Service Manual, Roche OMNI C, Rev. 3.0, September 2002

2 Revisions

2.1 Software

Version Nr. Date of Release Remark Installed from OMNI C Serial Nr.

1.01 15.10.2001 First Release

1.22 15.02.2002

1.33 06.12.2002

≥1000 ≥1251 ≥1558

Service Manual, Roche OMNI C, Rev. 3.0, September 2002 2-1

2 Revisions

2.2 Service Manual

2.2.1 Revision 1.0

Revision Nr. Date of Release Modified Chapters Applicable from Software Version

1.0 October 2001 First Release 1.01

2.2.2 Revision 2.0

Revision Nr. Date of Release Modified Chapters Applicable from Software Version

2.0 January 2002 2, 3, 6, 8, 9 1.22

Chapter-Page Modifica tion / Addition

Cover Page Revision No. and Dat e

2-I Table of contents 2-1 Revision List 3-II Table of contents

3-34 Changi ng the MBX board battery

6-I Table of contents 6-1 Password 6-3 Delete databases

6-3 – 6-4 Reset set tings

6-12 Consequence ac tion delay

6-13 – 6-14

6-15 Boot parameters 6-16 Database

8-I – 8-II Table of contents

8-1 – 8-9 System Stops

8-10 – 8-18 Error Messages

8-21 Leaks in the Sample port / Needle / Barex tube area 8-22 Electrode limit values

8-22 – 8-23 Contact path limi t values

9-1 – 9-6 Index

Log unit

2-2 Service Manual, Roche OMNI C, Rev. 3.0, September 2002

2 Revisions

2.2.3 Revision 3.0

Revision Nr. Date of Release Modified Chapters Applicable from Software Version

3.0 September 2002 2, 5, 6, 8, 9 1.33

Chapter-Page Modifica tion / Addition

Cover Page Revision No. and Dat e

2-I Table of contents

2-3 Revision List

5-I Table of contents 5-13 Cal ibrating the Sample Sensors 5-15 Calibration Flow Chart 5-19 Measurement procedure 5-21 System c alibration procedure

6-I Table of contents

6-2 Roche Servic e 1 – new Screenshot 6-5 AQC XY adjustment

6-7 Calibration of tHb temperature sensor 6-15 Start button for measurement 6-20 O2 zero interval

8-II Tabl e of c ontents 8-10 Error Messages 8-10 Li st of error messages (sorted by Inf o No.) 8-23 Electrode calibration limit values 8-23 Conductivity calibration limit values 8-24 Conductivity calibration limit values 8-25 Power-up component test

9-1 – 9-6 Index

Additional page Start button for measurem ent

Service Manual, Roche OMNI C, Rev. 3.0, September 2002 2-3

2 Revisions

2-4 Service Manual, Roche OMNI C, Rev. 3.0, September 2002

3 Components

3 Components....................................................... 3-1

3.1 Important Instructions ............................................................................ 3-1

3.2 Shutdown ................................................................................................ 3-2

3.2.1 The OMNI C stays switched off shorter than 24 hours .........................................3-2

3.2.2 The OMNI C stays switched off longer than 24 hours ..........................................3-2

3.3 Dismounting the rear panel.................................................................... 3-3

3.4 FMS (Fluid Mixing System) ..................................................................... 3-5

3.4.1 General Information...........................................................................................3-5

3.4.2 Changing the FMS unit......................................................................................3-5

3.5 Measuring chamber ................................................................................ 3-7

3.5.1 General Information...........................................................................................3-7

3.5.2 Changing the measuring chamber ......................................................................3-9

3.5.3 Changing the measuring chamber cover...........................................................3-11

3.5.4 Changing the analog board ..............................................................................3-12

3.5.5 Changing the measuring chamber actuators ..................................................... 3-13

3.5.6 Changing the sample sensor board .................................................................. 3-14

3.5.7 Changing the TCon......................................................................................... 3-15

3.5.8 Changing the electrode locking lever................................................................ 3-16

3.5.9 Changing the measuring chamber tubing.......................................................... 3-16

3.5.10 Changing the Barex tube .................................................................................3-17

3.5.11 Changing the FMS connector sealing 1 ............................................................3-18

3.5.12 Changing the FMS connector sealing 2 ............................................................3-18

3.5.13 Changing the tHb/SO2 module..........................................................................3-19

3.6 Sample port module.............................................................................. 3-20

3.6.1 Changing the sample port module ....................................................................3-20

3.6.2 Changing the sample port ................................................................................ 3-21

3.6.3 Changing the needle .......................................................................................3-22

3.6.4 Changing the needle sealing............................................................................3-22

3.6.5 Changing the flap detection board.................................................................... 3-23

Service Manual, Roche OMNI C, Rev. 3.0, September 2002 3-I

3 Components

3.7 Peristaltic pump .................................................................................... 3-24

3.7.1 Changing the peristaltic pump .......................................................................... 3-24

3.7.2 Changing the pump head .................................................................................3-25

3.7.3 Changing the pump tube..................................................................................3-25

3.7.4 Changing the tension lever.............................................................................. 3-26

3.7.5 Changing the pump plate sealing ..................................................................... 3-26

3.7.6 Testing the peristaltic pump.............................................................................3-27

3.8 PC tower................................................................................................ 3-27

3.8.1 General Information......................................................................................... 3-27

3.8.2 Changing the PC tower.................................................................................... 3-29

3.8.3 Screen............................................................................................................3-30

3.8.4 Changing the screen .......................................................................................3-30

3.8.5 Changing the backlight.................................................................................... 3-31

3.8.6 Changing the printer........................................................................................3-32

3.8.7 Changing the MBX board .................................................................................3-33

3.8.8 Changing the MBX board battery...................................................................... 3-34

3.9 Cables.................................................................................................... 3-35

3.9.1 Changing the data bus cable............................................................................ 3-35

3.9.2 Changing the DC power cable..........................................................................3-35

3.10 Fan.........................................................................................................3-36

3.10.1 Changing the fan............................................................................................. 3-36

3.11 Micro switch unit (Bottle compartment cover switch) .......................... 3-37

3.11.1 General Information......................................................................................... 3-37

3.11.2 Changing the micro switch unit ........................................................................ 3-38

3.12 Micro switches ......................................................................................3-39

3.12.1 Changing the W aste container micro switch ...................................................... 3-39

3.12.2 Changing the C3 docking mechanism micro switch ...........................................3-39

3.12.3 Testing the micro switches............................................................................... 3-40

3.13 Power supply unit..................................................................................3-40

3.13.1 Technical data ................................................................................................ 3-40

3.13.2 Changing the power supply unit....................................................................... 3-41

3-II Service Manual, Roche OMNI C, Rev. 3.0, September 2002

3 Components

3.14 Valves ................................................................................................... 3-41

3.14.1 General Information.........................................................................................3-41

3.14.2 Single valve head............................................................................................ 3-41

3.14.3 Double valve head........................................................................................... 3-42

3.14.4 Changing the valves........................................................................................3-42

3.14.5 Testing the valves...........................................................................................3-43

3.15 Actuator board...................................................................................... 3-44

3.15.1 Changing the Actuator board ........................................................................... 3-44

3.16 Pump board .......................................................................................... 3-45

3.16.1 Changing the Pump board ............................................................................... 3-45

3.17 Docking mechanisms............................................................................ 3-45

3.17.1 Changing the docking mechanism Waste W ...................................................... 3-45

3.17.2 Changing the docking mechanisms Calibration solution C1 and C2 ....................3-47

3.17.3 Changing the docking mechanism Pack C3....................................................... 3-48

3.18 Analyzer tubing..................................................................................... 3-49

3.18.1 Preparation ..................................................................................................... 3-49

3.18.2 Tubing in the area of docking mechanism Pack C3 ...........................................3-49

3.18.3 Tubing in the right bottle compartment area without AutoQC..............................3-50

3.18.4 Tubing in the right bottle compartment area with AutoQC..................................3-50

3.18.5 Tubing in the FMS area (Fluid Mixing System)..................................................3-51

3.18.6 Tubing in the pump area..................................................................................3-51

3.18.7 Tubing of the ref erence electrode connector..................................................... 3-52

3.19 Barcode scanner................................................................................... 3-53

3.19.1 General Information.........................................................................................3-53

3.19.2 Testing the barcode scanner ............................................................................3-54

Service Manual, Roche OMNI C, Rev. 3.0, September 2002 3-III

3 Components

3-IV Service Manual, Roche OMNI C, Rev. 3.0, September 2002

3 Components

3.1 Important Instructions

Components of the OMNI C (sample port, tubing, Waste container, et c.) contain remnants of biological fluids afte r use, resulting in possible risk for infections.

Handle these components with care and avoid skin contact. Wear rubber gloves while working on the analyzer!

The tubes may drip a little after being disconnected. Remove excess fluids with a clean, absorbent cloth.

After changing components, cali bration parameters coul d have changed or some values have to be entered again.

After finishing modifications, a system calibration must be performed to adapt the calibration parameters to the new conditions.

3 Components

Service Manual, Roche OMNI C, Rev. 3.0, September 2002 3-1

3 Components

3.2 Shutdown

Switch off the OMNI C before you begin with the modifications!

Determined by the time the analyzer was switched off, one of the following procedures has to be performed:

3.2.1 The OMNI C stays switched off shorter th an 24 hours

• Perf orm th e decont amin ati on pr ocedur e accor din g to secti ons 1.5. 1 to 1.5.6 on page 1-4.

• Press „More - Syst em – Tools– S oftware communi cation – Shu t down software“

and swi tch off the an alyzer

If the Docking mechanisms C1, C2 or C3 have been opened while the analyzer was switched off, the respective soluti ons have to be prepared again under „More - System – Tools– Fluid actions – Auto preparation routines“ to avoid improper operation!

3.2.2 The OMNI C stays switched off longer than 24 hours

• Perf orm th e decont amin ati on pr ocedur e accor din g to secti ons 1.5. 1 to 1.5.5 on page 1-4.

• Press „More - Syst em – Tools- Shutdown“ an d foll ow the in str ucti ons on the scr een.

Only Roche Deproteinizer may be used for the decontamination of the tubing.

3-2 Service Manual, Roche OMNI C, Rev. 3.0, September 2002

3.3 Dismounting the rear panel

1. Switch off the OMNI C (please pay atten tion to section 3.2 Sh utdown on page 3-2!).

2. Pull off the power cord from the power supply unit.

3. Remove t he thr ee m ountin g scr ews from the r ear pan el (s ee Fig. 3-1 ) and pul l off th e rear p anel from the analyz er (if needed, remove the power supply unit from the rear panel; a certain amoun t of force i s n eeded beca us e of th e mount ing wit h Vel cro t ape).

3 Components

Fig. 3- 1 O MNI C r ear p anel mou nti ng scr ews

4. Pull off the plug of the power supply cable from the PC tower (see Fig. 3-2).

Fig. 3-2 Plug of the power supply cable

Assembly is done in reverse order.

Service Manual, Roche OMNI C, Rev. 3.0, September 2002 3-3

3 Components

When installing the rear panel, please pay attention to the correct routing of the power supply cable inside the OMNI C (see Fig. 3-3)!

Fig. 3- 3 R out ing of t he p ower su ppl y c able

3-4 Service Manual, Roche OMNI C, Rev. 3.0, September 2002

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