On an SMP-400 system, when a read attempt was made at address 170 (hex), it did not return a valid DCC board ID. The ID is read from U30 on the DCC board.
For more information, see "MP Error Codes".
What you should do:
Note the error data that is displayed on the SMP-400 diagnostic LED.
If the error reoccurs, contact your Giddings & Lewis service representative.