Check you wiring per the TPC manual and verify something's not amiss. Is the base common connected to the TPC.
Try and clear the TPC from the 990 and readdress it by assigning a new ENG or TR #.
Do you the have the prog/run switch in run and the PH switch to the correct wattage?
The track and comm LED should be blinking. from p.10 of the TPC manual.
Operating the TPC Unit in the Command environment
Operate your TPC unit in Command mode when your locomotives are equipped with
TrainMaster Command Control.
In the Command Control environment, the locomotives receive signals from the Command Base that tell the locomotive what to do. Because speed and direction are not controlled by track voltage, use the TPC to set the maximum power that will be supplied at all times.
Setting the TPC to operate in the Command environment
Before you use the TPC unit in the Command environment, you must set the TPC unit to
Command mode.
1. Press
TR or ENG on the CAB-1 Remote Controller.
2. Enter the ID# of the TPC unit into the numeric keypad on the CAB-1 Remote Controller.
3. Press the
L button on the bottom of the CAB-1 Remote Controller.
The TRACK L.E.D. will flash slowly to indicate that the TPC is in Command mode.
When power is supplied to the track, the TRACK L.E.D. will blink quickly.
4. Press the
SET button on the CAB-1 Remote Controller to save this mode.
The COMM L.E.D. will long blink to indicate that the TPC has been set.
The TPC will remain in Command mode, even after the power is turned off.
The TPC will turn OFF when changing between conventional and Command
operations.
