GE P742

Troubleshooting
P74x/EN TS/N
a7
MiCOM P74
1, P742, P743
(TS) 12-
19
TS
Hexa Code
Decimal
code
Problem Verify or modify
Logical OR
See lines included in the logical OR
See lines included
Ex: 5010 = 4010 OR 1010
P742 / P743 - OPERATING MODE
PU_OPER_MAJOR
04xx
Topology autotest
Coprocessor firmware
08xx
Fixed Scheme Logic Autotest
Coprocessor firmware
1100
Measurement or Topology autotest
Coprocessor firmware
1200
Measurement or Topology autotest
Coprocessor firmware
2000
System error
Coprocessor firmware
4008
External autotest RAM
Coprocessor
4010
Interruptions autotest
Coprocessor
4018
Comm. board autotest
Coprocessor
8001
Main to Coprocessor
communication
Coprocessor or Main board
8002
Main to Coprocessor
communication
Coprocessor or Main board
8003
Main to Coprocessor
communication
Coprocessor or Main board
8004
Main to Coprocessor
communication
Coprocessor or Main board
8005
Main to Coprocessor
communication
Coprocessor or Main board
8006
Main to Coprocessor
communication
Coprocessor or Main board
8007
Main to Coprocessor
communication - no IT
Coprocessor address or
Coprocessor or Main board
Logical OR
See lines included in the logical OR
See lines included
PU_OPER_PERIPH
0200
Analogue module acquisition
problem
Analogue module
0408
Relay 3 board missing
Relay 3 board or Relay 3 board
address
0410
Relay 3 board writing error
Relay 3 board
0808
Opto 3 board missing
Opto 3 board or Opto 3 board
address
0810
Opto 3 board read error
Opto 3 board
1008
Relay 2 board missing
Relay 2 board or Relay 2 board
address
1010
Relay 2 board writing error
Relay 2 board
2008
Opto 2 board missing
Opto 2 board or Opto 2 board
address
2010
Opto 2 board read error
Opto 2 board
4008
Relay 1 board missing
Relay 1 board or Relay 1 board
address
4010
Relay 1 board writing error
Relay 1 board
8008
Opto 1 board missing
Opto 1 board or Opto 1 board
address
8010
Opto 1 board read error
Opto 1 board
Logical OR
See lines included in the logical OR
See lines included
Ex: a010 = 2010 OR 8010