Welch Allyn Connex Vital Signs Monitor 6000 Series Service Manual page 41

Service manual
Symptom
USB accessories do not
communicate with the monitor
The device does not communicate
via Ethernet with the computer
network
The radio does not connect to the
network
Possible cause
The accessory is defective
The communications board is not receiving power Check the voltage from J49 on
One or more USB host connections are defective Test the connection with a USB
A USB connection from the communications
board to the main board is faulty
The device is not configured properly
The communications board is not receiving power Check the voltage from J49 on
The Ethernet connection from the main board is
faulty
The network Ethernet switches are not set to the
correct speed to work with the device
The cable run to the switch is too long
The device is out of range of the access point
The device is not configured properly
The antenna is defective
Troubleshooting 35
Suggested action
communicate with the device.
See the service tool help files.
Replace the power cable to the
communications board.
Replace with a known good
accessory.
the main board for +5.0, ±0.5V
DC. Replace the main board if
necessary.
thumb drive. If no power or
enumeration is present, such as
an LED on a thumb drive, replace
the communications board.
Verify that the USB cables are
connected correctly.
Replace the USB cables.
Check the settings with your
network administrator.
the main board for +5.0, ±0.5V
DC. Replace the main board if
necessary.
Test the internal Ethernet cable.
Replace if necessary.
Verify that the shim is installed,
if required, on the Ethernet cable
connector at J11. See the
reassembly notes for the main
board.
Set the switches to 10 Mbps full
duplex.
Use a shorter patch cable.
Check the network status
screen's RSSI value.
Check the settings with your
network administrator.
Check the antenna cable and
antenna connection. Replace the
cable and antenna if necessary.