GE Centiva/5 Plus, Technical Reference Manual

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5 Troubleshooting
TRM, Centiva/5 Plus, M1047448/CM-922026, rev. 3.50.a of 11/05
5-29
5.3.5 System shut
down messages
The system shut down message displays in the format
“System shutdown error xxyy”
and is intended to be a help for complex failure analysis. The message consist of a
4 digit code “ xxyy ”, that represents the last information status prior to the
microprocessor systems turn down.
•
The “xx” represents the last “safe” status of micro controller A
•
The “yy” represents the last “safe” status of micro controller B
Error code Alarming uC Set condition Possible failure Action
Improper connection of
internal SIO cable
Check cable from front panel
bracket to X 14 on B board and
replace, if necessary
Improper connection of
external SIO cable (Control
panel cable) Or Connection
problem with external SIO
cable connector (Lemosa
plug)
Check front panel cable and
plug (Lemosa) and replace, if
necessary
Defective uC controller A or
Defective safety diode on PC
board A
Replace PC board A
11yy A Timer 3 system
problem
Defective Fuse SI 21, SI 22 Check fuse SI 21 and SI 22
and replace, if necessary
13yy A Timer 6 system
problem
Defective uC controller A Replace PC board A
14yy A Front side routine
without function Defective uC controller A Replace PC board A
ESD or EMI problem Check environment for ESD or
EMI source
Improper connection of
external SIO cable (Control
panel cable) Or Connection
problem with external SIO
cable connector (Lemosa
plug)
Check front panel cable and
plug (Lemosa) and replace, if
necessary
15yy A SIO data non plausible
Defective uC controller A Replace PC board A