User's Manual

Chapter 9 Simple fault diagnosis MDC-7000P/7900P Series
0093169006-05E 9-8
9.7 Frozen Display
Following procedure applies for troubleshooting Frozen Display phenomenon.
Indication of presentation failure
You can aware of a display presentation failure from identification conspicuous periodically time
element on the display.
This element is located upper right of the display by eight pattern triangle icons.
These icons will change every two seconds, three angles of directions turn to the clockwise.
When this movement stopped, radar system will be stopping.
Restart Display unit immediately.
Frozen Display refers to case when video is not refreshed or cursor is not responsive.
1 Turn GAIN, SEA and RAIN knob to confirm changes of video (Echo).
2 Turn trackball to confirm if cursor is moving.
While Menu is displayed, confirm if menu selection can be changed.
When malfunction of either step 1 or step 2 is found, the display is frozen.
Restart Display unit immediately.