Hitachi IJ UX Service Manual page 242

6.2.24 Model-key Fault
Model key fault
Does the fault recur after
disconnect and reconnect the model
key to EZJ126 board CN15?
Do the system reset by rescue soft
Does the fault recur?
Replace the EZJ126 board.
Does the fault recur?
It is necessary to change the model key.
Contact your local Hitachi sales office with
the unit serial number and model name.
6.2.25 Language-key Fault
Language-key Fault
Does the fault recur after disconnect
and reconnect the language key to
EZJ126 board CN25?
Do the system reset by rescue soft
Does the fault recur?
Replace the EZJ126 board.
Does the fault recur?
It is necessary to change the language key.
Contact your local Hitachi sales office with
the unit serial number and model name.
Yes
No
Yes
No
Yes
No
Yes
No
Yes
No
Yes
No
6-24
Resume the
operation.
Resume the
operation.