Hitachi ZW 550-6 Operator's Manual page 145

4. Rotate selector knob (2) to highlight Troubleshooting (6).
5. Press selector knob (2) to start troubleshooting. After
displaying "Wait." message, the screen displays controller
troubleshooting (7).
6. Active fault codes are displayed at the right side of each
item. Rotate selector knob (2) to highlight an item
displaying the fault codes.
7. Press selector knob (2) to display active fault code (8).
Up to 20 fault codes can be displayed.
IMPORTANT: Send the troubleshooting result to your
nearest authorized service representative as soon as
possible.
OPERATOR'S STATION
8
1-81
6
MNHG-01-260EN-KC
95MNEC-01-261EN
7
95MNEC-01-262EN
95MNEC-01-263EN