153MN024-010
TMPx-10
TPRN backplane and you need to return the sub-rack.
c. Otherwise the TMP power supply section is faulty. Return the unit.
2. In case the TPM red and green leds are lit, the RF level at the input port has exceeded
the specifi ed threshold. Decrease the RF signal or change the threshold.
3. In case the yellow led is on, check the RF input level
a. If there isn’t any RF signal at the input, check if the RF cable is connected to the
input port. If it’s connected, check the power coming out from the donor source.
b. Otherwise, the temperature range is not within the specifi ed range, change the
temperature range or provide proper air fl ow.
start
end
The TMP power
supply doesn not
work properly.
Contact the
manufacturer.
Check the TPRN
backplane
power supply
Check if the
temperature is
within the
specified range.
If it is not, the
TPRN needs
proper cooling.
If it is, contact the
manufacturer.
Check the RF
input level,
Check if the
RF cables are
properly
connected. If no
leakage of RF
power is found,
contact the
manufacturer.
Switch ON
the subrack
The TPRN backplane
seems to be faulty.
Contact the
manufacturer.
There is a power
supplying
problem.
The RF level on the input
port has exceeded the
threshold. Check the RF
signal.
Which red LED
is ON ??
Is the +12Vdc
provided ??
No
No
No
No
No
No
Is the red LED
ON upon the TMP ??
Yes
Yes
Yes
Yes
Yes
Is the red LED ON
and the green
one OFF ??
No Yes
Yes
Is the green LED
OFF upon the TMP ??
Is the green LED
OFF upon the TMP ??
Is the TPRN
subrack
switched ON??
Fig. 4.10.3: Flow-chart describing ordinary troubleshooting procedures on the TMP module
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