GE P741 - Page 466

Troubleshooting
P74x/EN TS/N
a7
MiCOM P74
1, P742, P743
(TS) 12-
15
TS
Hexa Code
Decimal
code
Problem Verify or modify
0805
Coprocessor to Comm. board 2
communication
Coprocessor or Comm. board 2
0806
Coprocessor to Comm. board 2
communication
Coprocessor or Comm. board 2
0807
Coprocessor to Comm. board 2
communication - no IT
Coprocessor or Comm. board 2 or
Comm. board 2 address
1001
Coprocessor to Comm. board 1
communication
Coprocessor or Comm. board 1
1002
Coprocessor to Comm. board 1
communication
Coprocessor or Comm. board 1
1003
Coprocessor to Comm. board 1
communication
Coprocessor or Comm. board 1
1004
Coprocessor to Comm. board 1
communication
Coprocessor or Comm. board 1
1005
Coprocessor to Comm. board 1
communication
Coprocessor or Comm. board 1
1006
Coprocessor to Comm. board 1
communication
Coprocessor or Comm. board 1
1007
Coprocessor to Comm. board 1
communication - no IT
Coprocessor or Comm. board 1 or
Comm. board 1 address
2001
Coprocessor to Comm. board 0
communication
Coprocessor or Comm. board 0
2002
Coprocessor to Comm. board 0
communication
Coprocessor or Comm. board 0
2003
Coprocessor to Comm. board 0
communication
Coprocessor or Comm. board 0
2004
Coprocessor to Comm. board 0
communication
Coprocessor or Comm. board 0
2005
Coprocessor to Comm. board 0
communication
Coprocessor or Comm. board 0
2006
Coprocessor to Comm. board 0
communication
Coprocessor or Comm. board 0
2007
Coprocessor to Comm. board 0
communication - no IT
Coprocessor or Comm. board 0 or
Comm. board 0 address
3FC0
no IT Comm. board to Coprocessor
board
Coprocessor or Com or ribbon
cable
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: 3006 = 2006 OR 1006
P741 -OPERATING MODE
CU_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
Data RAM autotest
Coprocessor
4010
RAM program autotest
Coprocessor
4018
Double access memory autotest
Coprocessor