GE Medical Systems Dash 3000, Service Manual, Page: 116 / 232

TROUBLESHOOTING: Service Tips
5-24 Dash 3000/4000 Patient Monitor Revision B
2000966-105
Service Tips
Fault/Symptom
Analysis This information is provided for the benefit of service technicians
responsible for the maintenance and repair of the monitor. The
symptoms covered in this part of the Troubleshooting section represent
only a select number of faults that you may encounter and by no means
are intended to cover every possible failure 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
monitor are essential to ensure successful troubleshooting of this device.
The manufacturer recommends formal service training before repairs are
attempted on the monitor. The Service Tips listed below combined with
formal training should provide the service technician with skills
necessary to service and repair a monitor, in the event of a malfunction.
Problem Reason Solution
General Problems
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.
■
Replace the power supply.
■
Replace the processor/power
management assembly.
Audio Problems
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.
Optional Writer Problems
No paper comes out,
even though “Graphing”
is displayed.
■
Graph locations are set
incorrectly.
■
With the Trim Knob control, select
MONITOR GRAPH SETUP, and GRAPH
LOCATION. Verify that MANUAL,
ALARM, and PRINT locations are set
properly.
Paper comes out, but no
graph data is shown.
■
The paper may be loaded
incorrectly.
■
See the Operator Manual for correct
paper installation.
■
Print head may be dirty
or defective.
■
Clean the printhead (refer to the
maintenance chapter of this manual).
■
Perform a graph test. If problem persists,
replace the writer assembly.
Saving Message
■
Writer is busy.
■
When the graph is complete, the saved
graph prints out.
■
Writer is no longer
available.
■
Check the graph locations. Set the correct
graph locations if necessary.
Missing segments in the
graph data.
■
Print head may be dirty
or defective.
■
Clean the printhead (refer to the
maintenance chapter of this manual).
■
Perform a graph test. If problem persists,
replace the writer assembly.