GE S5 Service Manual

							Display Unit for F-CM(C)1 (Rev. 04), F-CM(C)REC1 (Rev. 01)
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                                          Document no. M1031520-02
38. Card type recognition
Wait until the information regarding SLOT1 is fully updated in the service menu, then check that 
the Card type states MENU and the File system states ATA.
Check that the rest of the information for SLOT1 is reliable and no errors have been detected.

39. Data Card recognition
Insert a Memory card labelled Data in the right hand side memory card slot. Check that the 
message ‘Data Card inserted’ appears in the message field and the green menu card symbol on 
the upper right hand corner of the screen within 1 minute.
Wait until the information regarding SLOT2 is fully updated in the service menu, then check that 
the Card type states DATA and the File system states ATA.
Check that the rest of the information for SLOT2 is reliable and no errors have been detected.

40. Save and Load Modes
Enter the Save Modes menu:
Monitor Setup
Install Service (Password 16-4-34)
Save Modes (Password 13-20-31)
Save the current modes into the Menu card by selecting 
Load Modes
To Memory Card --> Save. 
Wait until the text ‘Saved’ appears, then return to the previous menu.
Change the name for the mode number 1:
Select the mode number 1, press the ComWheel and select -Name. Select suitable characters 
from the list by turning and pressing the ComWheel, then confirm the new name by selecting 
End.
Load the original modes from the Menu card by selecting
Load Modes
From Memory Card --> Load.
Wait until the text ‘Loading’ changes to ‘Loaded’ (may take a couple of minutes), then return to 
the previous menu.
Check that the mode number 1 has got back its original name.

41. Data Card functions
Press the membrane key 
Display Trends or Pt.Data & Trends --> Trends. Check that there is 
trend information available for the monitored parameters.
Erase the trends: 
						

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Document no. M1031520-02                                                                           
Reset Case
Reset All --> Yes
or
Admit/Discharge
Discharge --> Yes
Check that the trends have been erased.
Reload the trends from the Data card by pressing the key 
Patient Data or Admit/Discharge, 
selecting Patient from Card, pressing the ComWheel on the last saved file (the file information 
is shown at the bottom of the menu) and selecting Load.
Wait until the message ‘Loading from Mem. Module’ disappears, then check that the original 
trends are available again.

Network option
NOTE: The following steps are applicable only when the Network option is installed in the monitor.
42. Connection to Network
Check that the Mon-Net cable connector is clean and intact, then connect it to the network 
connectors on the Frame Unit.
Check that the monitor connects to the Datex-Ohmeda Network, i.e. the network symbol 
appears under the clock in the upper right hand corner of the screen. Also a message regarding 
the connected Central should appear in the message field of the screen.
NOTE: The battery symbol overrides the network symbol in Compact Monitor.
If the message regarding the Central does not appear, check the status of the network.

43. Ethernet address
Enter the network board service menu:
Monitor Setup
Install Service (Password 16-4-34)
Service - Frame (Password 26-23-8)
Network
Take down the monitor’s Ethernet address, which is shown beside the text Address.
44. Data counters
Check that the service menu counters for the received (‘In’) and transmitted (‘Out’) data are 
updated frequently.

45. Data error counters
Check that the counters for data errors (CRC, Frame, Transm.) are stable. 
						

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NOTE: The counters may show values higher than 0. However, if any of the values is increasing 
continuously, it indicates a problem.

46. Hardware error counters
Check that the counters for hardware errors (Intern., Missed, FIFO, Overrun) show all 0. If any of 
the counters show a value higher than 0, replace the network board.

47. Disconnection recognition
Disconnect the Mon-Net cable from the Frame Unit. Check that the message ‘Network down:’ 
appears in the message field within 30 seconds. When the message appears, the service menu 
values are no longer updated.
Reconnect the Mon-Net cable and check that the monitor connects to the Datex-Ohmeda 
Network again.

48. ID-plug recognition
Switch the monitor to standby. Disconnect the Identification plug from the Frame Unit. Switch 
the monitor back on and check that the message ‘Check network connectors’ appears in the 
message field.
Reconnect the Identification plug and check that the monitor connects to the Anaesthesia 
Network.

Wireless LAN option
49. Signal strength
Check that the green LED on the wireless antenna card blinks and the WLAN signal strength 
symbol roams or stays fixed on the monitor screen. 

50. Configure access point
Configure one access point appropriately. Bring the Compact Monitor to good WLAN coverage 
area. Check that the field level indicator stops scrolling.
Go to the WLAN Status page (... Service -> Frame -> Network -> WLAN - WLAN Status). 
Check that the Connection is active, AP MAC address is recognized and the connection speed is 
at least 2 Mbits/s.
 
						

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Document no. M1031520-02                                                                           
51. Connection to the Network
Make sure that the monitors wireless LAN antenna card is in line of sight with a wireless LAN 
access point antenna. Check that the monitor connects to the Datex-Ohmeda Network, i.e. the 
wireless LAN network symbol appears in the upper right-hand corner of the screen.

General
52. Trend retaining
Check that the monitor is capable of storing the trend information and temporary settings in a 
short (max. 15 minutes) standby.
Press the membrane key 
Display Trends or Pt.Data & Trends --> Trends. Check that there is 
trend information available for the monitored parameters.
Switch the monitor to standby and disconnect the power cord. Wait for two minutes, then 
reconnect the power cord and switch the monitor back on.
Check that the trend information is still available.

53. Service reset switch check
Switch the monitor to standby and disconnect the power cord. Press the service reset switch for 
at least five seconds. Check that the LED next to the switch turns off, and also the fan turns off.
Reconnect the power cord and turn the monitor back on. Check that all trends have now been 
erased.

54. Battery capacity
Test the batteries by performing the following:
•detach all modules
•keep the monitor connected to the mains power until the batteries are fully charged
•install a Hemodynamic Module and disconnect the power cord
•notice the time the monitor stays on with batteries
Replace the batteries, if the time was less than 45 minutes.

55. Service Log reset
Enter the Service Log in the service menu:
Monitor Setup
Install Service (Password 16-4-34)
Service (Password 26-23-8)
Service Log
Clear the content of the Service Log by selecting RESET LOG from the menu.
 
						

							Display Unit for F-CM(C)1 (Rev. 04), F-CM(C)REC1 (Rev. 01)
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56. Electrical safety check
Perform an electrical safety check and a leakage current test.
Check that the monitor functions normally after the performed electrical safety check.

57. Final cleaning
Switch the monitor to standby, disconnect the power cord and perform final cleaning.

Fill in all necessary documents. 
						

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Document no. M1031520-02                                                                           
3.3 Disassembly and reassembly
WARNINGThe S/5 Compact Anesthesia/ Critical Care Monitor is always energized by the 
internal battery. A short circuit may cause internal damage. Do not touch any 
exposed wiring or conductive surface inside, this may cause an electric shock.
CAUTION Perform leakage current measurement whenever service or repair has been done in 
the monitor.
NOTE: The backlight circuit runs on a high voltage. Do not touch the inverter board or the 
backlight tube leads when powered.
3.3.1 To disassemble the Display Unit F-CM(C)1 rev.04
1. Set the Compact Monitor lying on its rear side.
2. Turn the quick lock screw at the bottom of the Display Unit counter clockwise to release it.
3. Pull the Display Unit carefully upwards.
4. Set the Display Unit lying on its front side; be careful not to damage the ComWheel or the LCD 
screen.
5. Open and detach the four screws with the washers at the corners of the Display Unit.
6. Lift the Display Unit carefully from the side of the unit (Note that the Front Unit is connected with 
flat cables to the Central Processing Board). Detach the two flat cables from the CPB X7 and X5 
connectors. Please note that the connectors are fragile; do not bend them while disconnecting 
the cables. 
7. Lay the Display Unit carefully on the table.
X7X5 
						

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3.3.2 To disassemble the Display Unit of F-CM(C)(REC)1 rev.00...03
1. Set the Compact Monitor lying on its rear side.
2. Turn the quick lock screw at the bottom of the Display Unit counter clockwise to release it.
3. Pull the Display Unit carefully upwards and detach the Network and NetID cables.
4. Set the Display Unit lying on its front side; be careful not to damage the ComWheel or the LCD 
screen.
5. Open and detach the four screws with the washers at the corners of the Display Unit.
6. Lift the Display Unit carefully from the side of the unit (Note that the Front Unit is connected with 
short flat cables to the Central Processing Board). Detach the two flat cables from the CPB X7 
and X5 connectors. Please note that the connectors are fragile; do not bend them while 
disconnecting the cables. 
7. Lay the Display Unit carefully on the table. 
						

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Document no. M1031520-02                                                                           
3.3.3 To remove the Central Processing Board (CPB) from the Display Unit Back Unit
1. Disassemble Display Unit. 
2. Detach the fan and loudspeaker cables from the CPB, connectors X17 (loudspeaker) and X16 
(fan).
3. Detach the power cables coming from the DC/DC board, connector X10.
4. Detach the Signal cables (two) coming from the DC/DC board, connectors X23 and X19.
5. Detach carefully the Synchronization board foil cable by opening the lock at the connector X9 
and pulling the foil out.
6. Detach the NetID cable from the CPB, connector X8.
7. Detach the Network cable from the CPB, connector X20.
8. Open the seven screws holding the CPB.
9. Lift the CPB carefully from the Display Unit.
3.3.4 To remove the Display Unit DC/DC power board
1. Disassemble the Display Unit.
2. Detach the fan and loudspeaker cables from the CPB, connectors X17 and X16.
3. Detach the power cables leading to the CPB.
4. Detach the signal cables leading to the CPB.
5. Open the four screws holding the DC/DC power board.
6. Lift the DC/DC power board carefully from the Display Unit. 
						

							Display Unit for F-CM(C)1 (Rev. 04), F-CM(C)REC1 (Rev. 01)
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3.3.5 To remove the Synchronization Unit
1. Disassemble the Display Unit.
2. Detach carefully the Synchronization board foil cable by opening the lock at the connector X9 
and pulling the foil out.
3. Open the two screws holding the whole unit in the Display Unit back cover.
NOTE: Do not open the screws holding the Synchronization board in the Synchronization Unit.
3.3.6 To remove the Net Unit
1. Disassemble the Display Unit.
2. Detach the NetID and Network cables from the CPB, connectors X8 and X20 respectively.
3. Open the two screws holding the Net Unit in the Display Unit cover.
4. Open the two screws holding the ID connector in the Display Unit back cover (from the outer side 
of the cover).
3.3.7 To remove the loudspeaker and fan
1. Disassemble the Display Unit.
2. Detach the loudspeaker and fan cables from the CPB, connectors X17 and X16 respectively.
3. Open the screws holding the loudspeaker and fan. 
NOTE: When reassembling, be sure to connect the cables to correct connectors on the PCB.
3.3.8 Disassembling the Connector Board and Inverter Board
1. Disassemble the Display Unit.
2. Set the Front Unit carefully lying with the LCD screen downwards. Note! Be careful not to 
damage the LCD screen or the ComWheel.
3. Detach carefully the lower keyboard flat cable from the Connector Board.
4. Detach carefully the side panel keyboard flat cable from the Connector Board.
5. Detach the Connector Board – Inverter Board cable. 
6. Detach the ComWheel cable.
7. Open the four screws holding the Connector board and remove it.
8. Detach the backlight cables from the Inverter Board.
9. Open the three screws holding the Inverter Board.
NOTE: The Inverter Board is sensitive to bending. 
NOTE: When replacing the Inverter Board, fasten the inverter screws gently, using only as much force 
as necessary to fasten the board firmly enough in place. The screws must not be fastened so tightly 
that the board will be bent from around the screws. Also, do not bend or twist the Inverter Board 
during the assembly.
3.3.9 To Disassemble the LCD Display Element, F-CM(C)(REC)1 rev. 00
NOTE: Wear a static control wrist strap and soft cotton gloves (dust free) when handling the LCD 
display parts. Hold them by their corners or edges. Do not touch the connector pins. 
						

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Document no. M1031520-02                                                                           
In normal circumstances it is very difficult to keep the LCD Display component and the display shield 
surfaces free of dust when the LCD Display unit package is opened and they are exposed to room air. 
If dust particles remain on the LCD Display component and the display shield surfaces, they may 
impair the picture quality on the screen.
In case you need to detach the LCD Display component for repair, you may return it to be repaired at 
GE Healthcare. If you can provide a dustfree environment, follow the instructions below. See also 
Exploded view of the Display Unit, Front Unit, F-CM(C)(REC)1 Rev. 00.
1. Disassemble the Display Unit.
2. Detach carefully the lower keyboard flat cable from the Connector Board.
3. Detach carefully the side panel keyboard flat cable from the Connector Board.
4. Detach the ComWheel cable.
5. Detach the backlight cables from the Inverter Board.
6. Open the four screws holding the LCD Display Unit and the metal EMC cover in the Display Unit 
front cover.
7. Open the two screws covering the video flat cable connector in the LCD Display element. 
8. Lift the EMC cover carefully up.
9. Lift the LCD Display element carefully up.
NOTE: Do not use excessive force when fastening the display component to the metal frame. 
Fastening the screws too tightly might bend the display module too much and break it. The screws 
must also be fastened gradually: first fasten all screws slightly, then more tightly.
NOTE: When reassembling the LCD Display component, be careful that no dirt or finger prints are left 
between the LCD element and the protection glass window.
NOTE: If the LCD Display unit is broken, handle it carefully to avoid injury (the LCD Display component 
and the backlight lamp(s) are made of glass). Wash your hands if you touched liquid crystal, which 
may flow out from a broken LCD Display component.
NOTE: Do not touch, push or rub the exposed display module surface. Keep the surface clean. In case 
of accidental mishandling, see the instructions following this chapter.
3.3.10 To Disassemble the LCD Display Element, F-CM(C)(REC)1 rev.01, F-CM(C)1 rev.02...04
NOTE: Wear a static control wrist strap and soft cotton gloves (dust free) when handling the LCD 
display parts. Hold them by their corners or edges. Do not touch the connector pins.
In normal circumstances it is very difficult to keep the LCD Display component and the display shield 
surfaces free of dust when the LCD Display unit package is opened and they are exposed to room air. 
If dust particles remain on the LCD Display component and the display shield surfaces, they may 
impair the picture quality on the screen.
In case you need to detach the LCD Display component for repair, you may return it to be repaired at 
GE Healthcare. If you can provide a dustfree environment, follow the instructions below. See also 
Exploded view of the Display Front Unit, F-CM(C)(REC)1 rev. 01, F-CM(C) rev 02.
1. Disassemble the Display Unit.
2. Detach carefully the lower keyboard flat cable from the Connector Board.
3. Detach carefully the side panel keyboard flat cable from the Connector Board.
4. Detach the ComWheel cable.
5. Detach the backlight cables from the Inverter Board.