Chapter 4 Maintenance
T
-900 series
4-2
0093142132-00
4.1.2 Yearly Inspection
In case of antenna (RB716A), check the brush of the antenna drive motor inspect every 2,000 hours of
transmission. If the length is shorter than 6mm, replace it with a new one.
Press the [MENU] key and select [MAINTE]
→
[DISPLAY UNIT], message of transmission time is
displayed.
approx. 6mm
Contacting surface Motor brush
WARNING: Before opening the cover of the antenna, be sure to turn off the
power of the radar equipment to avoid the electrocution.
(1) Loosen the fixing screws and remove the cover of the antenna at the bow side. The antenna drive
motor can be seen at the lower side in the cabinet.
(2) Referring to the illustration below, remove the motor brush with flat screw driver.
(3) Insert the screwdriver in the groove of the brush and rotate it clockwise and slowly.
Be sure to replace both brushes at both sides.
(4) Insert new brushes and install the brushes in reverse steps.
Inside of antenna cabinet
Motor
Motor brush
Motor
Motor brush
To remove the motor brush, turn it counterclockwise
and slowly with the screwdriver.
