GE Corometrics 250cx Series Service Manual

5-38 250cx Series Maternal/Fetal Monitor Revision C
2036947-001
Troubleshooting: System Troubleshooting
SYSTEM POWER SUPPLY
FRONT-END MOTHERBOARD Passes all front-end signals. Make sure boards
seated and no connector damage exists.
ULTRASOUND BOARD Can affect ultrasound audio only if US board is
bad
ISOLATED POWER SUPPLY By affecting ECG - does not affect ultrasound
UI KEYPAD BOARD Would affect all buttons on front panel.
DSP TO UI KEYPAD CABLE Would affect all buttons on front panel.
UI TO VOLUME BOARD CABLE Could affect only volume and alarm cancel
COMM BOARD WITH I/O
CONNECTORS
Sits on same data bus as DSP/Display board
FAN Secondary failure due to overheating only
FECG
FECG FRONT-END CABLE &
CONNECTOR
Usually Bad Connector Crimps
ISOLATED POWER SUPPLY
FRONT-END MOTHERBOARD Passes all front-end signals -make sure boards
seated & no connector damage
FECG/UA BOARD
DSP BOARD Processes FECG analog
SYSTEM POWER SUPPLY
MAIN BOARD Processes for display
COMM BOARD WITH I/O
CONNECTORS
Sits on the same data bus as DSP Display Board
UA
ISOLATED POWER SUPPLY
UA FRONT-END CABLE &
CONNECTOR
Usually bad connector crimps
DSP BOARD Processes UA analog
FRONT-END MOTHERBOARD Passes all front-end signals -make sure boards
seated & no connector damage
FECG/UA BOARD
SYSTEM POWER SUPPLY
MAIN BOARD Processes for display
250cx Series Service & Troubleshooting
PROBLEM SUBASSEMBLY COMMENTS

GE Corometrics 250cx Series Specifications

General

Type	Fetal Monitor
Model	250cx Series
Manufacturer	GE Healthcare
Fetal Heart Rate Monitoring	Yes
Ultrasound Frequency	1 MHz
Recorder Speed	1, 2, 3 cm/min
Maternal Parameters	ECG, NIBP, SpO2
FHR Range	30-240 bpm
TOCO Range	0-100
Connectivity	RS-232
Power Source	AC Power
Display	Color LCD