GE Dash 3000 - Fault Analysis and Problem Diagnosis

Troubleshooting: Fault analysis
6-2 Dash 3000/4000/5000 2000966-542D
Fault analysis
Overview
The symptoms and solutions in this chapter represent only a few of the
faults that you may encounter and are not intended to cover every
possible problem that may occur.
A systematic approach to the diagnosis of problems as well as a general
understanding of the architecture, both hardware and software, of the
patient monitor are essential to ensure successful troubleshooting of a
device. GE recommends formal service training before repairs are
attempted. These troubleshooting procedures combined with training
provide the service technician with skills necessary to service and repair
a patient monitor in the event of a malfunction.
Required tools or equipment
 Standard set of hand tools
 Patient simulator with cables
 Digital multimeter
Problems
Before starting any detailed troubleshooting, complete a thorough visual
inspection of the following.
 All cable connections secure?
 Devices properly powered?
 Connected to a proper power source?
Problem Possible reason Solution
General
The unit is plugged in, but it does not
switch to AC from battery power.
 The output voltage of the power
supply is inadequate for the
processor PCB to recognize.
 Perform “Power outlet test” on page 8-5 to confirm
AC power.
 Replace the power supply.
 Replace the processor/power management
assembly.
Alarm audio
Audio does not sound.
Go to the Alarm Help Menu and select
“Crisis.” Listen for the three-beep
audio.
 The speaker cable is loose or
disconnected.
 Restore the cable connections.
 The speaker failed.  Replace the speaker.
 The audio circuit on the processor
PCB failed.
 Replace the Replace the processor/power
management assembly.
Waveform display
 Patient cables are bad.
 The acquisition PCB, DAS Assembly
or power supply PCB failed.
 Perform appropriate sections of the “Functional
Checkout procedures” on page 8-20 depending on
the waveform problem.