Service manual

Service Call Conditions

M052/M053/M054 6-14 SM

652 B ID2 mismatching

ID2 for @Remote certification is mismatching between the controller

board and NVRAM.

 Used controller board installed

 Used NVRAM installed

Install the correct controller board or new controller board.

Install the correct NVRAM or new NVRAM

653 B

ID2 error

ID2 stored in the NVRAM is incorrect.

 Used NVRAM installed

Clear the ID2 in the NVRAM, and then input a correct ID2.

669 B EEPROM Communication Error

The machine failed to detect a match between the read/write data for the

EEPROM on the BICU after 3 attempts.

 EEPROM installed incorrectly

 EEPROM defective. Turn the machine power off/on after replacing the

EEPROM.

 BICU defective.

671

CTL

Engine board mismatch error

Engine board and controller mismatch detected.

 Wrong engine board installed.

 Wrong controller board installed.

 Check the type of engine board and controller board.

Replace the BICU.

Replace the controller board.