MITSUBISHI ELECTRONICS AMERICA, INC.
ST200 Series Technical Support Manual
81
January 2000
What to Check
What to do
1. Is the signal strength high enough?
Make sure the antenna is not blocked or
reflected and review the signal strength
requirement in the operating instructions.
2. Were the correct MIN and SASK entered?
Reprogram the MT if necessary.
3. Were the right PFC and CFC frequencies
correctly entered?
Use FCN 93 to enter the correct PFC and
CFC.
4. Does the ESN on the TU match that in the
account?
Check with the service provider to verify the
ESN.
5. What is the MT account status?
Check with the service provider to make sure
the account is in “ready for commissioning”
status.
6. Does “COM NG Push SND” message
show on LCD?
This indicates an error during commissioning.
Push the Send button or conduct manual
Pilot/GC-S selection.
7. Does the display show “COM NG Push
PWR”, “Wait COM” or “Push PWR”?
These messages all indicate that
commissioning failed. Turn the MT off and
try again.
8. Does the display show “COM” or “PVT:
COM”?
These are normally displayed during the
commissioning process. Wait for successful
completion.
Problem: MT does not complete initialization
After an MT has been commissioned, it should be able to establish contact with the satellite
network and be ready to make calls within 60 seconds of being powered on. This initialization
process sometimes takes longer, but should definitely be completed in less than two minutes.
What to Check
What to Do
1. Does “SAT Search” message show on
LCD?
Wait for MT to complete manual Pilot/GC-S
selection. This process should take less than
10 minutes, unless there is an equipment
failure.
2. Is an “E” displayed in the upper right hand
corner on the LCD?
This indicates that the MT is downloading
bulletin board information from the satellite
network. Wait for it to clear.
3. NO SVC
This message may be displayed when the MT
is in a poor location or when there is an
account problem.
Problem: Signal strength is low
MT signal strength, as indicated by the Receive Signal Strength Indicator (RSSI), must be high
enough for the MT to maintain contact with the satellite network, to commission the MT and to
