Chapter 7 Troubleshooting; Monitor Booting Failures - EDAN iM80 Servise Manual

iM80 Patient Monitor Service Manual

Chapter 7 Troubleshooting

EDAN supports replacement of PCB and major subassemblies for this monitor. When
replacement is needed, follow the procedures described in chapter 8 Disassembling the Monitor.

7.1 Monitor Booting Failures

Phenomenon
After switching on, LCD
has no display; the power
indicator is off; the fan
doesn't run.
After switching on, LCD
has no display or is black
when working; the power
indicator is lit; the fan runs
normally.
Characters display correctly,
but waveforms
intermittently.
Some operation
measurement
invalid.
Abrupt switching off.
Possible Cause
The fuses are blown.
Power board defective.
Short circuit of other parts.
Main
defective.
LCD defective.
Faulty data communication
between
display
board
module.
or Main control board or
function corresponding
defective.
The monitor is struck by
strong high voltage, such as
lightning strike.
Bad power
performance.
Main
defective.
Bad connection.
control board
main control
and parameter
parts
supply
control board
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Troubleshooting
Solution
Replace the fuses.
Replace the power board.
Look for the short circuit source and
fix it.
Check whether the keys sound
properly. If yes, examine the LCD.
If the keys don't sound, it may be
the fault of the main control board.
Replace the main control board.
Replace the main control board, link
board or parameter module to verify
the fault according to the prompt.
Further examine the main control
board and corresponding parts.
Check the power supply and earth
system.
Replace power supply.
Replace the main control board.
Replace or repair connectors.