21.53.114345-1.1.2C Edan F series Fetal Monitor Alarm Indicator Panel For Maintenance and Repair

21.53.114345-1.1.2C Edan F series Fetal Monitor Alarm Indicator Panel For Maintenance and Repair

• Product Description

The circuit board in front of you is the alarm indicator board (part number 21.53.114345-1.1.2C) specifically designed for the Edan F series (F2/F3/F300/F200) fetal monitors.

It's designed very compactly: a row of LED beads are neatly arranged on a green PCB substrate. This isn't an ordinary light board; it's the monitor's "alarm sentinel." When the fetal heart rate (FHR) or uterine contraction pressure becomes abnormal, it will immediately alert the doctor or nurse by flashing lights, ensuring no critical situation is missed.

This board is directly related to the safety of maternal and infant monitoring and is an essential "lifesaving" spare part for hospital equipment departments and third-party maintenance engineers.

• Product Specifications

• Repair and Replacement Recommendations

1. Fault Symptom:

If the monitor's alarm sound is normal, but the corresponding alarm indicator light on the front panel is not lit or remains constantly lit, it's usually due to a damaged LED on this small circuit board or an open circuit in the driver circuit.

2. Installation Tips:

Because this board is located on the front panel, take precautions against static electricity during installation and avoid direct contact between your fingers and the solder joints. Use moderate force when tightening the screws to prevent breaking the green fiberglass board.

• Function

1. Visual Alarm Indicator
This is the front-end output unit of the equipment's alarm system. When the monitor detects parameters such as fetal heart rate (FHR) or uterine contraction pressure (TOCO) exceeding preset safety thresholds, the LEDs on this board will emit a visual alarm by flashing or remaining constantly lit, alerting medical staff.

2. Status Feedback
Besides emergency alarms, it can also indicate the equipment's operating status (such as power on, normal or abnormal sensor connection, etc.), helping users quickly determine the equipment's current operating condition.

3. Signal Conversion and Driving
It receives control signals from the main control board and converts them into electrical signals to drive the LEDs. Surface mount resistors and capacitors on the board are used to stabilize the current and protect the LEDs from burnout.