GE S5 Service Manual

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                                          Document no. M1031518-02
5. Perform the gas calibration.
6. Connect the catheter to the module. Start measurement by pressing the 
Start-Stop key on the 
module. Check that the catheter fills up.
Stop the measurement by pressing the 
Start-Stop key. Check that Meas. Off text appears in 
the digit field.

2.2.9 Multiparameter Hemodynamic Modules
ECG and RESP measurements
1. Enter the ESTP: ECG service menu.
Check that the Time-outs, Bad checksums and Bad c-s by mod values are not increasing faster 
than by 5 per second. Check that the ECG/RESP board memories have passed the internal 
memory test, i.e. RAM, ROM and EEPROM all state OK.
2. Check the front panel membrane key 
ECG LEAD, if available.
3. Check that the ‘Power Freq’ value is set according to the mains power frequency. Correct the 
setting, if necessary.
4. Connect a 3-lead ECG trunk cable without a lead set to the module. Check that the message 
Leads off is displayed on the screen.
Connect a 12-lead ECG trunk cable without a lead set to the module. Check that the message 
Leads off is displayed on the screen.
5. Modules without the 12-lead capability (M-ESTPR, M-ETPR, M-ESTR, M-NESTPR, M-NETPR and 
M-NESTR modules): connect a 5-lead ECG cable to the module. Connect the cable leads to a 
patient simulator.
Check that the ‘Cable type’ shows 5 lead.
6. Disconnect one of the leads and check that the corresponding electrode in the service menu 
shows OFF within 10 seconds from the disconnection, then reconnect the lead.
Check the rest of the leads using the same method.
NOTE: With NESTPR/ESTPR type modules: when the ground lead (black) is disconnected, all the 
electrodes should show OFF. With M-NE12STPR, M-PRESTN, E-PRESTN and E-PSM: when any 
of the limb leads is disconnected, the measurement will automatically change to 3 electrode 
ECG measurement. 
NOTE: The asystole and different leads off messages are shown using certain priority. Even 
though one of the leads is disconnected, the related leads off message may not appear on the 
screen.
NOTE: When RA, LA, LL or RL electrode is disconnected, all V electrodes show OFF.
NOTE: With NESTPR/ESTPR type modules and 5 lead cable, the state of V2, V3, V4, V5 and V6 
electrodes follow the state of the V electrode.
7. Check that all ECG and impedance respiration information is shown on the monitor screen as 
configured on the simulator.
Check that the pacer count value in the service menu is shown according to the simulator 
configuration.
Change baseline impedance on the simulator and check that appropriate RESP waveform and 
RR values are shown again within 30 seconds. 
						

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Document no. M1031518-02                                                                           
Turn the simulator off. Check that the ‘Asystole’ and ‘Apnea’ messages are displayed.

Temperature measurement 
8. Enter the ESTP: STP service menu.
Check that the Time-outs, Bad checksums and Bad c-s by mod values are not increasing faster 
than by 5 per second. Check that the STP board memories have passed the internal memory 
test, i.e. RAM, ROM and EEPROM all show OK.
9. Check the temperature measurement calibration using temperature test plugs.
NOTE: Make sure that the protection for temperature calibration is set on, if calibration is 
needed.

Invasive blood pressure measurement 
10. Check the function of the module front panel membrane keys.
11. Check the InvBP channels with a patient simulator.
Zero the InvBP channels, then check that the values and waveforms correspond to the simulator 
settings.

SpO2 measurement 
12. Check that the message ‘No probe’ is shown, when no SpO2 sensor is connected.
Connect an SpO
2 finger probe to the module. Check that the message ‘Probe off’ is shown, 
when the probe is not connected to a finger.
13. Attach the SpO
2 probe to your finger. Check that a reading of 95-99 and a pleth waveform 
appear on the screen.

Non invasive blood pressure measurement 
14. Enter the NIBP module service menu.
Check that the Time-outs, Bad checksums and Bad c-s by mod values are not increasing faster 
than by 5 per second. Check that the NIBP board memories have passed the internal memory 
test, i.e. RAM, ROM and EEPROM all show OK.
15. Check the function of the front panel membrane keys.
16. Check the NIBP tubing system for leakages by performing Calibrations - Active leak test.
17. Perform NIBP calibration by selecting Calibration.
18. Enter the Pneumatics service menu.
Check the NIBP watchdog timer activation pressure with a pressure manometer.
19. For Modules M-ESTPR and M-NE(12)STPR: Check the NIBP watchdog timer by performing 
Watchdog – Test Adult and Test Infant.
20. Check the safety valve by performing Safety Valve – Adult and Infant. 
						

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21. Attach an adult NIBP hose and cuff onto your arm and perform one NIBP measurement. Check 
that the module identifies the cuff, i.e. the text ‘Adult’ appears in the NIBP digit field for a short 
time.
Check that the module gives a reasonable measurement result.
E-PSM(P), E-PRESTN:
22. Attach a NIBP cuff hose without cuff identification and check that the module identifies the 
hose: 
−The message ‘Select inflation limits’ appears in the NIBP digit field.
−When you try to start the measurement, the monitor automatically opens the selections 
NIBP Setup - Inflation Limits.

2.2.10 EEG Module, E-EEG/ M-EEG and EEG Headbox, N-EEG
1. Enter the EEG & EP service menu:
Check that the Time-outs, Bad checksums and Bad c-s by mod values in the module view are 
not increasing faster than by 5 per second. Check that the memories of the module have 
passed the internal memory test, i.e. RAM, ROM and EEPROM all state OK.
Check that the HB Mod Time-outs, HB Mod Bad Checksum and Mod HB Bad Checksum values 
are not increasing faster than by 5 per second. Check that the memory of the headbox has 
passed the internal memory test, i.e. HB Rom Error in the headbox view states 0.
2. Check the 
EP Start/Stop and Imp. Check membrane keys both in the module and the 
headbox.
3. Connect the EEG simulator to the headbox. Select 10 kΩ as imped. pos. and imped. neg. value 
on the simulator. Go to EEG & EP service menu and select Check Electr. Check in the headbox 
view that the impedances in all four channels are 10 kΩ ±1 kΩ.
4. Select 2 kΩ as imped. pos. and imped. neg. value on the simulator. Select 10 Hz 200 µV 
sinewave on the simulator and check that all the four waveforms have the same form. Check 
that the size of the waveforms is 200 µV
pp ±5 V. Check that the MF value is 10 ±0.5 Hz. Check 
that the amp value is 71 µV ±3 µV.
5. Plug in the earphones to the headbox.
NOTE: Be careful with loud stimulation from the earphones when starting AEP stimulation.
Start AEP stimulation by pressing the 
EP Start/Stop button on the module. Check that the 
clicking sound comes from the earphones in 1.1 Hz frequency. Stop the stimulation by pressing 
again the 
EP Start/Stop button on the module. Check that the clicking stopped.

2.2.11 BIS Module, E-BIS/ M-BIS
1. Enter the BIS service menu:
Check that the DSC is connected to the module and the PIC+ cable is connected to the DSC.
Check that the Mod Mon Time-outs, Mon Mod Bad checksums, Mod Mon Bad Checksums and 
Bad Checksums from BIS values in the module view are not increasing faster than by 5 per 
second.  
						

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Document no. M1031518-02                                                                           
Check that the memories of the module have passed the internal memory test, i.e. RAM, ROM 
and EEPROM all state OK.
2. Check the 
BIS and Sensor Check membrane keys of the module. Stay in the module view and 
press each key for at least one second and check that the key being pressed is identified, i.e. 
the corresponding PUSHED text appears in the service menu.
3. Check that ‘Messages from BE’ are increasing steadily.
Enter the Sensor menu.
Check that 
- sensor type indicates No Sensor (i.e. no sensor is identified)
- no sensor is identified
- mains frequency is set correctly
- check that ‘BE powerup test’, ‘DSC selftest Ch1’ and ‘DSC selftest Ch2’ all show PASSED
(if not, go to BIS Setup menu, perform DSC Test and check the results again)
4. Connect the BIS simulator to the PIC+ cable. See that ‘Checking sensor’ text and image appear 
in the waveform numeric field. Wait for a while and check that all sensors show PASS. Check 
that the ‘Sensor type’ shows correct information.
5. Check that the ‘BIS’, ‘SQI’ and ‘SR’ values are between 0...1000, and the ‘EMG’ value between 
0...10000.
NOTE: If Sensor Simulator 900508 is used, the values can be out of the given range.
6. Enter the Module menu. 
Check that no BIS engine errors appear.
Perform sensor check by pressing 
Check Sensor and see that the check is passed. 
During the sensor check the Impedance meas. should show CYCLIC. During operation the 
Impedance meas. should show COMBINED or OFF (depending on the user setting in BIS 
Setup menu).

2.2.12 Entropy Module, E-ENTROPY/ M-ENTROPY
1. Enter the Entropy service menu.
Check that the Entropy sensor cable is connected to the module.
Check that the Time-outs, Bad checksums and Bad c-s by mod values in the module view are 
not increasing faster than by 5 per second. Check that the memories of the module have 
passed the internal memory test, i.e. RAM, ROM and EEPROM all state OK.
2. Check the 
Entropy and Check Sensor membrane keys of the module. Stay in the module 
view and press each key for at least one second and check that the key being pressed is 
identified, i.e. the Check Sensor text is highlighted in the service menu and that pressing the  
Entropy key brings up the Entropy menu.
3. Connect the Entropy simulator (N-ES) to the cable. See that the ‘Checking sensor’ text and 
image appear in the waveform numeric field. Wait for a while and check that all sensors show 
“PASS”.
4. Check that the EntrEEG waveform and RE and SE values appear on the monitor screen. 
 
						

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2.2.13 Pressure/Pressure Temp Modules, E-P, E-PT, M-P, M-PT
1. Enter the P/PT module service menu:
Check that the Time-outs, Bad checksums and Bad c-s by mod values are not increasing faster 
than by 5 per second. Check that the PT board memories have passed the internal memory test, 
i.e. RAM, ROM and EEPROM all show OK.

Invasive blood pressure measurement
2. Check the function of the front panel Zero P3 membrane key.
3. Check the InvBP channel with a patient simulator.
Zero the InvBP channel. Then check that the values and waveforms correspond to the simulator 
settings.

Modules w/ temperature measurement
4. Check the temperature measurement calibration using temperature test plugs.
NOTE: Make sure that the protection for temperature calibration is set on.

2.2.14 Dual pressure Module, E-PP, M-PP
1. Enter the PP module service menu:
Check that the Time-outs, Bad checksums and Bad c-s by mod values are not increasing faster 
than by 5 per second. Check that the Dual Pressure module, E-PP or M-PP, memories have 
passed the internal memory test, i.e. RAM, ROM and EEPROM all show OK.
2. Check the function of the front panel
 Zero P5 and Zero P6 membrane keys.
3. Check the InvBP channels with a patient simulator. 
Zero the InvBP channels. Then check that the values and waveforms correspond to the 
simulator settings.

2.2.15 Cardiac Output Modules, E-COP, E-COPSv, M-COP, M-COPSv
1. Enter the COP module service menu:
Check that the Time-outs, Bad checksums and Bad c-s by mod values are not increasing faster 
than by 5 per second. Check that the module’s memories have passed the internal memory 
test, i.e. RAM, ROM and EEPROM all show OK.

Invasive blood pressure measurement
2. Check the function of the front panel membrane Zero P4 key. 
						

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Document no. M1031518-02                                                                           
3. Check the InvBP channel with a patient simulator.
 Zero the InvBP channel. Then check that the values and waveforms correspond to the simulator 
settings.

SvO2 measurement
4. Check that the SvO2 values Meas. state, OM fail and OM temp. in the COP module service menu 
all show NO OM.
5. Checks with the SvO
2 simulator:
Turn the SvO
2 simulator pulsation switch to Medium and the range switch to Normal pulse. 
Connect the simulator to the module and check that the following messages appear in the digit 
field for SvO
2:
Initializing, please wait > Warming up > Not calibrated
Check that ‘Meas. state’ has changed to NORMAL and ‘OM fail’ and ‘OM temp.’ show OK.
NOTE: The ‘OM temp.’ may show UNSTABLE at first, but the message should change to OK 
within a half a minute.
6. Perform an In Vitro calibration with the SvO
2 simulator.
Check that the calibration date for In Vitro calibration was updated correctly and the SvO
2 
reading on the screen is 81% (±2%).

Cardiac Output measurement
7. Enter the COP module service menu.
Check the front panel 
Start C.O. membrane key.
8. Enter the C.O. View menu:
Others - C.O. View
Connect a catheter connecting cable to the module connector C.O.
If the module contains a C.O. Test connector (M-COP), attach the catheter connector of the 
connecting cable to the C.O. Test connector. Check that the message ‘Cable OK’ appears in the 
menu after the self-test.
No Catheter > Self Test in Progress > Cable OK
9. Check the C.O. measurement with a patient simulator.
 

2.2.16 NIBP module, M-NIBP
1. Enter the NIBP service menu:
Check that the Time-outs, Bad checksums and Bad c-s by mod values are not increasing faster 
than by 5 per second. Check that the NIBP board memories have passed the internal memory 
test, i.e. RAM, ROM and EEPROM all show OK.
2. Check the front panel LEDs and membrane keys using the Buttons/Leds service menu. 
						

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3. Check the NIBP tubing system for leakages by performing Active leak test.
4. Perform NIBP calibration by selecting Calibration.
5. Enter the Pneumatics service menu.
Check the NIBP watchdog timer activation pressure with a pressure manometer.
6. Check the NIBP watchdog timer by performing Watchdog – Test Adult and Test Infant.
7. Check the safety valve by performing Safety Valve – Adult and Infant.
8. Attach an adult NIBP cuff onto your arm and perform one NIBP measurement. Check the 
module identifies the cuff, i.e. the text ‘Adult’ appears in the NIBP digit field for a short time.
Check that the module gives a reasonable measurement result.

2.2.17 NeuroMuscular Module, E-NMT, M-NMT
1. Enter the NMT module service menu:
Check that the Time-outs, Bad checksums and Bad c-s by mod values are not increasing faster 
than by 5 per second. Check that the module’s memories have passed the internal memory 
test, i.e. RAM, ROM and EEPROM all state OK.
2. Check the function of the front panel membrane keys 
Start-Up and Stop/Continue.
3. Check that the message ‘Cable off’ is shown in the digit field and that ‘Cable’ on the service 
menu states OFF.
Plug the NMT Sensor Cable with the NMT ElectroSensor into the front panel connector NMT. 
Check that the message in the digit field changes to ‘Measurement OFF’ and ‘Cable’ in the 
service menu states EMG and ELECTR. OFF.
4. Place a 3 kΩ resistor between the ElectroSensor’s stimulus electrode leads (brown and white). 
Perform Start Curr. Test.
Check that the test was successful, i.e. the ‘Current test (mA):’ in the menu states 30 OK, 50 OK 
and 70 OK.
Connect the ElectroSensor leads to the NMT simulator. Set the switch on the simulator to FADE 
OFF and turn the knob to MAX. Check that ‘Cable’ in the service menu states now only EMG.
5. Start the NMT measurement (TOF) by pressing the 
START-UP key on the module.
Check that the found supramaximal current is less than 70 mA, i.e. the ‘Current set’ value in the 
service menu is less than 700.
6. Check that the digit field TOF% value is within 95-105, Count is 4 and T1% is within 95-105.
7. Check that the Noise value in the service menu remains under 100.

2.2.18 Nellcor Compatible Saturation module, E-NSAT, M-NSAT
1. Enter the M-SAT service menu:
Check that the Time-outs, Bad checksums and Bad c-s by mod values are not increasing faster 
than by 5 per second. Check that the NSAT module’s ROM memory has passed the internal 
memory test, i.e. ROM shows OK.
Check that all three error indicators, Preamp Error, QUART Error and I/O Error state NO. 
						

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Document no. M1031518-02                                                                           
2. Check that the SpO2 probe related status information in the menu is correct. Only the ‘NoProbe’ 
should be active (1), when no probe is connected.
3. Connect a Nellcor SpO
2 finger probe to the module. Check that the message ‘Pulse search’ is 
shown and the corresponding status information in the menu is active. Check that the shown 
message changes to ‘Check probe’ within 30 seconds.
4. Attach the SpO
2 probe on your finger. Check that a reading of 95-100 and a proper SpO2 
waveform appear.

2.2.19 Datex-Ohmeda Oxygen Saturation module, M-OSAT
1. Enter the M-SAT service menu:
Check that the Time-outs, Bad checksums and Bad c-s by mod values are not increasing faster 
than by 5 per second. Check also that the module’s ROM memory has passed the internal 
memory test, i.e. the ROM shows OK.
2. Check that the message ‘No probe’ is displayed on the screen when no probe is connected. 
3. Connect a suitable SpO2 finger probe to the module. Check that the message ‘Check probe’ is 
displayed on the screen within 30 seconds
.
4. Attach the SpO2 probe on your finger. Check that a reading of 95-100 and a proper SpO2 
waveform appear.

2.2.20 Memory 
1. Enter the MemCards service menu:
Check that the memory unit is recognized properly, i.e. Present and Active state YES.
2. Check that the memories and the PCMCIA controller have passed the tests. The status for each 
should be OK.
3. Select Communication.
Check that the Interface status states Active continuously and the error counter values on the 
bottom part of the menu are stable.
4. Select Status.
Insert  Data card into the slot.
Wait until the information is fully updated in the service menu, then check that the Card types 
are correct and the ‘File system’ states ATA.
Check that the rest of the information is reliable and no errors have been detected.

2.2.21 Recorder 
1. Open the paper compartment cover. Check that the message ‘Recorder: Cover open’ appears 
on the screen, then close the cover. 
						

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2. Press the Record Wave key and check that the module starts recording the selected 
waveforms. Press the 
Stop key again to stop recording. 
3. Check that the quality of the recordings is acceptable.

2.2.22 Network Option
1. Check that the Mon-Net cable connector and the Identification plug are clean and intact, then 
connect them to the frame unit. Check that the monitor connects to the Datex-Ohmeda 
Network, i.e. the network symbol appears on the upper right-hand corner of the screen. Also a 
message regarding the connected Central should appear in the message field on the screen.
NOTE: If necessary, reselect the monitor’s network communication according to the used 
network software in the Network service menu.
2. Enter the Ethernet service menu:
Check that the counters for data errors (CRC, Frame, Transm.) are stable.
Check that the counters for hardware errors (Intern., Missed, FIFO, Overrun) all show 0.

2.2.23 Wireless Network Option
1. Check that the green LED on the wireless antenna card blinks and the WLAN signal strenght 
symbol scrolls between zero and full or stays fixed on the monitor screen.
2. Check that the wireless LAN network symbol appears on the upper right-hand corner of the 
screen when the monitor connects to the Datex-Ohmeda Network,
NOTE: If the monitor does not connect to the Datex-Ohmeda Network, check the WLAN configuration 
on the monitor and on the network.

2.2.24 Interface Module, E-INT, M-INT
1. Enter the Interface service menu:
Check that the Time-outs, Bad checksums and Bad c-s by mod values are not increasing faster 
than by 5 per second. Check that the memories have passed the internal memory test, i.e. RAM 
and ROM state OK.

2.2.25 Device Interfacing Solution, N-DISxxx
1. Enter the DIS Interfacing service menu:
Check that the DIS module ‘tout’ and ‘cse’ values do not increase faster than by 5 per second. 
Check also that the DIS module memories have passed the internal memory test, i.e. Ram, Rom 
and EEPROM state all OK. 
						

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Perform the same check for all connected DIS modules.

2.2.26 General
1. Storing trend data
Check that the monitor is capable of storing the trend information and temporary settings in a 
short (max. 15 minutes) standby situation with no power cord.

2. Service reset
Check the Service Reset switch. Switch the monitor to standby and press the Service Reset 
switch for at least five seconds. Switch the monitor back on and check that the monitor 
performs a Cold Start, i.e. all trend information is cleared.

3. Watchdog
Enter the Set/Test service menu and perform Watchdog.
Check that the monitor restarts.

4. Service Log reset
Enter the Service Log service menu.
Clear the content of the Service Log by selecting Reset Log from the menu.

5. Electrical safety check
Perform an Electrical safety check and a leakage current test.
Check that the monitor and all connected units function normally after the performed test.

6. Final cleaning
Switch the monitor to standby and perform final cleaning.
Fill in all necessary documents.