Grand Central Hub User’s Manual Page 7 of 8
a. GCHub can't get quick codes.
i. Check network
1. Is the network cable plugged in on both ends? Is the network down locally?
a. Does a different GCHub work with that network cable?
i. If no, try a different cable. If another cable doesn’t work,
it’s probably a network issue.
ii. If yes, original GCHub has an issue.
b. Blinking lights
2. The GCHub must not be connected to T-Mobile's internal network - check
that it is on the dedicated network assigned for it.
3. Is Grand Central working?
a. Login to Grand Central on the designated terminal
b. Display doesn't work
i. Check that the power cable is correctly plugged in at both ends and power is on
ii. Does a different GCHub work with the same power and network connections? If not,
try a different power cable.
iii. Otherwise, replace GCHub. contact GCHub Help and they will assist you to get the
device sent in and replaced.
c. Device won't turn on
i. Check that the power cable is correctly plugged in at both ends and power is on
ii. Does a different GCHub work with the same power and network connections? If not,
try a different power cable.
iii. Otherwise, replace GCHub. contact GCHub Help and they will assist you to get the
device sent in and replaced.
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