MCi iControl User Manual page 348

Troubleshooting
Table 6.3 iControl Messages
SCR Phase Lock Loop Warning
Description: This fault indicates that the phase lock loop circuit PLL LED is ON in the SCR-LGA and that the
System 12 SCR Drive was unable to lock onto the incoming line frequency. The PLL LED is normally on for a
few seconds during power up. Detected while the car is not moving. DC controls only.
Car Reaction: Car will not move.
Troubleshooting:
1. Verify that the PLL indicator is active on the SCR-LGA board.
2. Verify that the iBox is not resetting the SCR drive. If it is, the PLL indicator will be active for a short inter-
val. For a recurring drive fault, the iBox should reset the SCR drive every 15 seconds. If so, there is
probably an underlying fault that the iBox is trying to clear.
3. Contact MCE technical support.
SCR Power Supply Fault, SCR POWER SUPPLY FLT
Description: Indicates that power supplied to the System 12 SCR Drive is insufficient. DC controls only.
Car Reaction: Car will not run.
Troubleshooting:
1. Check all supply voltages on the SCR-PS board (section 8).
2. Check the F2D fuse.
3. Verify voltages inside the drive are within 1%. If voltages are correct, check the drive cable from the
iBox to the drive. Check the SCR-LGA board (section 8).
Secondary Fire Switch On, SEC FIRE SWITCH ON
Description: The Secondary Fire Recall Switch is in the ON position.
Car Reaction: The car will recall to the Main fire recall floor, position its doors as indicated on the Car Oper-
ation/Fire/Modify/Fire Recall screen, and await activation of the in-car firefighter switch.
Troubleshooting: If in error, check the Secondary Fire Recall switch input.
Serial COP Bus 'n' Comm Fault, SCOP BUS 'n' COMM FAULT (n = 1 - 4)
Description: Indicates lost communication between the ICE-CTP (cartop processor) board and the ICE-COP
(serial COP) board for at least 1.5 seconds.
Car Reaction: none
Troubleshooting:
1. Check for a bad cable between the ICE-CTP and ICE-COP boards.
2. Check for a bad ICE-COP board.
3. Check for high electrical noise interference.
4. Check for proper shielding of the cables (board to board and board to controller).
Serial COP Bus 'n' Inventory Fault, SCOP BUS 'n' INVENTORY FLT (n = 1 - 4)
Description: Can indicate lost communication between the ICE-COP (serial COP) board and one or more ICE-
COP-x boards. Could also indicate that an ICE-COP-x board was connected or disconnected after the system
was powered up (I/O inventory changed).
Car Reaction: none
Troubleshooting:
1. Check for bad cable(s) between the ICE-COP and ICE-COP-x boards.
2. Check for a bad ICE-COP-x board.
3. Press the RESET button on the ICE-COP board (takes a new inventory).
6-72 Manual # 42-02-2222
iControl Messages