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Troubleshooting
5-3
Monitor Operates but Fails System Functions
Modules and SDLC Link
1. Verify that the proper SDLC terminations are set and that the proper cables are being used
(refer to Installation on page 2-8 for information).
2. Check the software versions of all installed modules, Flexport interfaces, and other attached
SDLC equipment and verify that there are no incompatibilities.
3. For the 90387, verify that the DC power supply is producing +12, +5, and -12 VDC by
probing with a DVM at pins 11, 2, and 13, respectively, at the internal SDLC connectors, J4
and J5. If voltage faults are found, replace the backplane board.
Ethernet Functions
1. Check the Ethernet setup and verify that a proper monitor ID, monitor name, and subnet
name were entered. Cycle power to reconfigure the system if these are changed.
2. Check that the Ethernet cable is attached to a multiport that is ON and functional.
3. If the problem persists, replace the CPU board.
External Alarm
1. Independently verify the operation of the nurse call box. Replace if it does not work correctly.
2. Verify that the alarm cable is installed correctly and that pin 4 on the connector has +12 V.
3. If the problem persists, inspect the I/O board and the interconnect board. If any connectors
or parts on either of these assemblies appear damaged, replace the damaged assembly.
4. If the problem persists, replace the CPU board.
Remote Display
1. Check the external monitor power and video cables for proper connections. Verify that the
display is set in the correct operating mode.
2. Verify that the external monitor brightness, vertical, and horizontal sync are set correctly.
3. Verify that the external monitor’s terminations are set for 75 ohms, if adjustable.
4. If the problem persists, replace the CPU board.
5. If used with a 91416-B display and there is no sync, verify that the 44-pin cable is not
damaged and is securely attached to the monitor and display.
6. If used with a 91416-B display and there is no touchscreen or audio, verify that the 44-pin
cable is not damaged and is securely attached to the monitor and display.
!
• If the connector is difficult to reach, connect a 15-pin extender cable to the unused
connector and use the unconnected cable end to probe for voltage levels.