Rational SCC Series

33
CM
Edition 10-2008
Fault tree: Changing CM pcb / replace EEPROM
Disconnect unit from power supply
(Remove fuses F1 and F2)
Reconnect unit from power supply
( x fuses F1 and F2 back)
Software update of pcb to
C1-07-01 or later
Disconnect unit from power supply
(Remove fuses F1 and F2)
Reconnect EEPROM to pcb
Reconnect unit from power supply
( x fuses F1 and F2 back)
Error „E1“ still existing
Call Rational Service
OK
Replace new PCB
Note:
Do NOT connect external EEPROM as software version of pcb might
not be compatible with pcb without updating!
2 reasons to follow below procedure:
- Changing of pcb (software version on replacement pcb is not known)
- Unit display „E1“ - replace external memory with new EEPROM