Troubleshooting
6-6
3800 Vital Signs Monitor Service Manual
Revised October 2004
6.3.2 Missing Rows or Sections of Display Pixels
Description:
The display is missing entire rows or sections of pixels. Menus are still displayed in
response to key presses.
Possible Cause(s):
1.
The display board is faulty.
Troubleshooting Action(s):
1.
Power-cycle the monitor.
2.
Ifthe problem persists, then the display board needs to be replaced. See replacing
the display section of the Repair chapter for details.
6.3.3 Other Technical Messages
Description:
The monitor displays one of the following messages:
•
PPM overheating
•
PPM disk space low
•
PPM CPU overloaded
•
Supply voltage too low
•
Supply voltage too high
Possible Cause(s):
1.
PPM Overheating: internal monitor temperature too high.
2.
PPM Overheating: communication problem with the main board.
3.
PPM disk space low: Flash Card file system is full.
4.
PPM CPU overloaded: internal logic error.
5.
Supply voltage too low/high: problem with main board.
Troubleshooting Action(s):
1.
Power-cycle the monitor.
2.
If the “Supply Voltage too low” problem persists, there may be a problem with the
connector between the master processor (bitsy board) and the main board.
Disassemble the monitor according to the monitor disassembly procedure.
Confirm that master processor is firmly seated into the main board below it.
Reassemble the monitor according to the monitor reassembly procedure and
power-cycle the monitor.
3.
If any of these problems persist, take the monitor out of service and contact
InvivoMDE Technical Support for instructions. The main board may need to be
replaced in some cases.
6.4
Reducing EMI
The 3800 Vital Signs Monitor complies with regulatory standards regarding electromagnetic
compatibility (IEC 60601-1-2). The following is a list of actions that should be taken to reduce
problems that are caused by electromagnetic interference (EMI):
1.
Only use accessories that are listed in chapter 8 of this manual
2.
Ensure that other products in the area comply to accepted emissions standards (EN
55011).
3.
Maximize the distance between electromedical devices.
4.
Strictly limit the use of partable radio-frequency sources (e.g., cellular phones and
radio transmitters).
