F15 Series Fetal & Maternal Monitor Service Manual
Troubleshooting
- 32 -
Chapter 7 Troubleshooting
This troubleshooting guide introduces the suitable actions for correcting the problems or
replacing the accessory or calling the service person. It can also help you to have more exact
descriptions of the fault symptoms when calling for service.
EDAN supports replacement of PCBs and major subassemblies for this product. Verify the
malfunction of the PCBAs/Modules prior to disassembling with the method described in chapter
8 Modules’ Malfunction Verification
. When replacement is needed, follow the procedures
described in chapter
9 Dissembling the Monitor
.
7.1 Monitor Booting Failures
Phenomenon
Possible Cause
Solution
After switching on, LCD has
no
display;
the
power
indicator is off; the fan doesn’t
run.
No AC mains connected.
Check if the power cord is damaged.
Check if the power cord is well
connected to the power socket of the
monitor and hospital AC outlet.
Main
control
board
defective.
Replace the main control board.
Abrupt switching off.
The monitor is stricken by
strong high voltage, such as
lighting strike.
Check the power supply and earth
system.
Bad
power
supply
performance.
Replace power supply.
Main
control
board
defective.
Replace the main control board.
Bad connection.
Check all the connectors.
7.2 Display Failures
Phenomenon
Possible Cause
Solution
The LCD has no display.
The LCD related cable(s) is
(are) disconnected.
Check that the LCD related cables
between the main control board and
the LCD are well connected. Check
that the LCD backlight cable is well
connected.
LCD defective.
Replace the LCD.
Main
control
board
defective.
Replace the main control board.
