GE S5 Service Manual

Display Unit for F-CM(C)1 (Rev. 04), F-CM(C)REC1 (Rev. 01)
19
                                          Document no. M1031520-02
2.10.2 Serial data interface
The serial interface is an asynchronous RS-232 connection, which uses hardware flow control. The 
communication speed is 115.2 kbps. The communication uses the following parameters: Parity 
None, Data bits 8 and Stop bits 1.
2.10.3 Digital and analog outputs
Digital outputs
 There are separate digital outputs. Both signals use TTL level. The outputs...

Datex-Ohmeda S/5 Compact Anesthesia and Compact Critical Care Monitors
20
Document no. M1031520-02                                                                           
3 Service procedures
3.1 General service information
The field service of the S/5 Compact Anesthesia Monitor and S/5 Compact Critical Care Monitor is 
limited to replacing faulty PC boards and mechanical parts. Return the faulty PC boards to GE 
Healthcare for repair.
GE Healthcare is always available for service advice. Please...

Display Unit for F-CM(C)1 (Rev. 04), F-CM(C)REC1 (Rev. 01)
21
                                          Document no. M1031520-02
3.2.2 Recommended parts
3.2.3 Before beginning
•
Make sure that the monitor is switched to standby.
•Disconnect the power cord and press the service reset switch until the LED next to it turns off.
•If the monitor is connected to the Datex-Ohmeda Network, disconnect the Mon-Net cable from 
the Frame Unit. Take out any memory cards, if installed.
•Detach the Display Unit from...

Datex-Ohmeda S/5 Compact Anesthesia and Compact Critical Care Monitors
22
Document no. M1031520-02                                                                           
•screws are tightened properly
•the connector pins are intact

5. Front Unit
Check that:
•the Connector Board screws are tightened properly and the cable connectors are clean 
and intact
•the Inverter Board screws are tightened properly and the cable connectors are clean and 
intact
•the Backlight cables are intact and attached...

Display Unit for F-CM(C)1 (Rev. 04), F-CM(C)REC1 (Rev. 01)
23
                                          Document no. M1031520-02
3.2.5 Functional inspection
9. Stand-by LED
Connect the power cord.
Check that the standby LED starts blinking or is on continuously, if the batteries do not need 
charging.

10. Start-up
Switch the monitor on.
Check that the monitor starts up properly, i.e. the alarm LEDs turn blank, the start-up sound is 
heard from the loudspeaker and the normal monitoring screen appears.
No...

Datex-Ohmeda S/5 Compact Anesthesia and Compact Critical Care Monitors
24
Document no. M1031520-02                                                                           
The FACTORY RESET should be performed after the battery replacement, see “Performing 
Factory Reset” .

14. Loudspeaker
Check the loudspeaker by setting the alarm sound:
Alarms Setup
Alarm Volume
Test the whole volume scale from 1 to 10 by turning the ComWheel and check that the alarm 
volume changes correspondingly. The alarm sound...

Display Unit for F-CM(C)1 (Rev. 04), F-CM(C)REC1 (Rev. 01)
25
                                          Document no. M1031520-02

19. Watchdog circuitry
Test the watchdog circuitry:
Monitor Setup
Install Service (Password 16-4-34)
Service (Password 26-23-8)
Set/Test
Perform the tests WATCHDOG and WD BY OVERLOAD. Check that the monitor restarts in each 
case.
NOTE: When selecting WD BY OVERLOAD, restarting should take place approximately after
15 seconds.
 
Preset monitor settings: 
Record/Print
Record...

Datex-Ohmeda S/5 Compact Anesthesia and Compact Critical Care Monitors
26
Document no. M1031520-02                                                                           
Check also the functioning of the side panel keys.

22. ComWheel check
Turn the ComWheel clockwise and counter clockwise and check that each step generates a 
sound from the loudspeaker and the corresponding values at the bottom of the menu increase.
Select Dummy Press. Press the ComWheel and check that the press generates a sound...

Display Unit for F-CM(C)1 (Rev. 04), F-CM(C)REC1 (Rev. 01)
27
                                          Document no. M1031520-02
26. Battery voltage
Check that the shown Battery Voltage value is within 10 – 17V.

27. Monitor temperature
Check that the shown Monitor Temperature value is within 20 - 40.

28. Battery operation
Disconnect the power cord (without switching the monitor to standby).
Check that the monitoring continues normally. The battery indicator should appear in the upper 
right hand corner...

Datex-Ohmeda S/5 Compact Anesthesia and Compact Critical Care Monitors
28
Document no. M1031520-02                                                                           
Record/Print
Record Waveforms
Paper Speed --> 1 mm/s
Press the key 
RECORD WAVE and wait until the recording stops. Check that the length of the 
scale is now 3.0 cm (± 0.5 cm).

33. Quality of recording
Check that the quality of the recording is acceptable.

MemCard option 
NOTE: The following steps are applicable only when the...