Troubleshooting & Error Code - NEC NP-NC900C-A Service Manual

1-2. Troubleshooting & Error Code
Error Code Definition
In Delta RS232 debug mode, the slave MCU will response with error code in case of system error like lamp fail,
or thermal situation failure, etc. They are defined as below table.
System error codes were defined as following tables
Byte 0
Bit 0 ErrMsgOverTempInlet
Bit 1 ErrMsgOverTempDMD
Bit 2 ErrMsgOverTempLamp
Bit 3 Reserved
Bit 4 ErrMsgOverTempBallast1
Bit 5 ErrMsgOverTempBallast2
Bit 6 ErrMsgInletSensorError [5]
Bit 7 ErrMsgInDMDSensorError
Byte 2
Bit 0 ErrMsgFan9RotateError
Bit 1 ErrMsgFan10RotateError
Bit 2 ErrMsgFan11RotateError
Bit 3 ErrMsgFan12RotateError
Bit 4 ErrMsgFan13RotateError
Bit 5 ErrMsgFan14RotateError
Bit 6 ErrMsgFan15RotateError
Bit 7 ErrMsgFan16RotateError
Byte 4
Bit 0 ErrMsgPreCooling
Bit 1 ErrMsgLamp1DoorOpen [5]
Bit 2 ErrMsgLamp2DoorOpen [5]
Bit 3 ErrMsg12VOverSpec[7]
Bit 4 ErrMsgBallast1UartError
Bit 5 ErrMsgBallast2UartError
Bit 6 ErrMsgFanInitError
Bit 7 ErrMsgExGpioFail
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TROUBLESHOOTING
Definition
Definition
Definition
4-7
Byte 1
Bit 0 ErrMsgFan1RotateError
Bit 1 ErrMsgFan2RotateError
Bit 2 ErrMsgFan3RotateError
Bit 3 ErrMsgFan4RotateError
Bit 4 ErrMsgFan5RotateError
Bit 5 ErrMsgFan6RotateError
Bit 6 ErrMsgFan7RotateError
Bit 7 ErrMsgFan8RotateError
Byte 3
Bit 0 ErrMsgInterLockOpen
Bit 1 ErrMsgSystemI2cFail
Bit 2 ErrMsgEepromFail
Bit 3 Reserved
Bit 4 Reserved
Bit 5 ErrMsgLampDoorOpen [5]
Bit 6 Reserved
Bit 7 ErrMsgSoftwareI2cFail
Byte 5
Bit 0 ErrMsgFan1DriverError
Bit 1 ErrMsgFan2DriverError
Bit 2 ErrMsgFan3DriverError
Bit 3 ErrMsgFan4DriverError
Bit 4 ErrMsgFan5DriverError
Bit 5 ErrMsgFan6DriverError
Bit 6 ErrMsgFan7DriverError
Bit 7 ErrMsgFan8DriverError
Definition
Definition
Definition