6/02
2-57
DC1632/2240
4-362, 4-371
Status Indicator RAPs
Prelaunch Training/Review
4-362 IOT NVM Read Write
Read Write at the MCU PWB NVM R/W.
Procedure
Switch the power off then on. The problem continues.
YN
Return to Service Call Procedures.
Check the connection between the MCU PWB and the MCU NVM PWB.
If the problem continues, replace the MCU PWB (PL 13.1).
If the problem continues, replace the MCU NVM PWB (PL 13.1).
4-371 IOT Controller Timing Failure
There is a communication failure between the ESS and IOT.
Procedure
Switch the power off then on. The problem continues.
YN
Return to Service Call Procedures.
Check the MCU PWB and ESS PWB connectors.
If the problem continues, re-install software.
If the problem continues, replace the MCU PWB (PL 13.1).
If the problem continues, replace the ESS PWB (PL 13.1)
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