User's Manual

Sierra ROU 40W User Manual

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■ Appropriate Measures

－ Solution : Replacing the harbness connected DTU, if it still has the problem, replace the DTU board

－ Measures : Check the operation by replacing the harbness connected DTU or DTU board.

(10) DTU Link Fail (MHU, ROU)

■ Phenomenon

－ Alarm window : GREEN → RED

■ Causes

－ Occur the problems of link fail between DTU board and CPU

■ Appropriate Measures

－ Solution : Check Reference clock or Check the connectivity between DTU board and Back Board

－ Measures : Check the connectivity status of DTU board and replace DTU board.

(11) VSWR (ROU)

■ Phenomenon

－ Alarm window : GREEN → RED

■ Causes

－ Occur the problems at antenna input port or AMP

■ Appropriate Measures

－ Solution : Check antenna inputport connection status, if there is no fault, replace the AMP

－ Measures : Check the antenna input port and if there is no fault, replace the AMP and confirm it works.

(12) Over Power (ROU)

■ Phenomenon

－ Alarm window : GREEN → RED

■ Causes

－ Has the problem at RRFU intergrated module output

■ Appropriate Measures

－ Solution : Although it set the static output by controling ATT, if it still has the problem, RRFU intergrated

moduled should be replaced

－ Measures : Check the operation by chekcing and repacing the RRFU intergrated module

(13) Over Temp (ROU)

■ Phenomenon

－ Alarm window : GREEN → RED

■ Causes

－ RRFU’s intergrated module temparature is more than 85℃

■ Appropriate Measures

－ Solution : Checm the temparatrue table. Even though it is set approprate temarature, still has a problem. APD

AMP should be replaced.

－ Measures : Check the operation by replacing the RRFU intergrated module

(14) Battery (ROU)

■ Phenomenon

－ Alarm window : GREEN → RED

■ Causes

－ Battery has some problems.