Mindray T1 - Page 59

T1 Service Manual 6-7
Symptoms Possible Cause Corrective Action
Unable to connect to the Wi-Fi
network.
The Wi-Fi signal is unstable in the
operating area.
1. Verify that the network is available.
2. Check if the network type is correctly set. For example, if
LAN is used, set network type to LAN and connect the
patient monitor to the network; if WLAN is used, set the
network type to WLAN and connect the patient monitor to
the network.
3. Check that the SSID and password of the monitor are
consistent with those of the wireless AP.
4. Check for IP address conflicts. If any, set the IP addresses
correctly.
5. Check if Mindray recommended wireless AP is used. If
not, verify the AP effective transmission rate meets the
throughput requirements of the connected devices.
6. Verify the AP channel bandwidth is 20 MHz.
7. Verify where the monitor is located, the wireless AP signal
strength is no less than -65 dBm.
8. Verify where the monitor is located, the signal strength of
other Wi-Fi devices at the same channel is no greater than
-85 dBm.
9. Verify where the monitor is located, the signal strength of
other Wi-Fi devices of adjacent channels is no greater than
-50 dBm.
10. Verify that the recommended distance between the
monitor and other non-Wi-Fi wireless devices, including
wireless devices at the frequency of 2.4GHz, cellular mobile
communication networks, microwave ovens, intercoms,
cordless phones and electro-surgical units, is no less than
20 cm.
The monitor's Wi-Fi antenna is
detached from or not connected
to the Wi-Fi module.
Properly attach the Wi-Fi antenna.
Wi-Fi antenna defective Replace the Wi-Fi antenna.
Wi-Fi module defective Replace the Wi-Fi module.
Main board defective Replace the main board.