User's Manual

Sierra ROU 40W User Manual

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－ Alarm window : GREEN → RED

■ Causes

－ MHU: Has the problem at TX PLL in MUDC(750M/800M/1.9G/2.1G)

－ ROU 10W: Has the problem at TX PLL in RRFU intergrated moduel Converter

■ Appropriate Measures

－ Solution : MHU- Replacing MRFU(750M/800M/1.8G/2.1G)

ROU - Replacing RRFU intergrated module Converter(750M/800M/1.8G/2.1G)

－ Measures : MHU- Check the operation by repacing MUDC(750M/800M/1.8G/2.1G) of Path(alarm occuring)

ROU 10W- Check the operation by repacing RRFU intergrated module

converter(750M/800M/1.8G/2.1G)

(6) Internal FAN (MHU, ROU 10W)

■ Phenomenon

－ Alarm window : GREEN → RED

■ Causes

－ Occuring some problems at internal fan

■ Appropriate Measures

－ Solution : Check and replace the FAN

－ Measures : Check the operation by chekcing and repacing the fan

(7) External FAN (MHU, ROU)

■ Phenomenon

－ Alarm window : GREEN → RED

■ Causes

－ Occuring some problems at external fan

■ Appropriate Measures

－ Solution : FAN Check and replace

－ Measures : Check the operation by chekcing and repacing the fan

(8) TX S/D(High) (ROU)

■ Phenomenon

－ Alarm window : GREEN → RED

■ Causes

－ TX output is higher than alarm setting value

■ Appropriate Measures

－ Solution : Set appropriate TX ATT

－ Measures : Setting the TX ATT in accordance with environment and truning ALC on to prevent to be S/D.

(9) DTU Status (MHU, ROU)

■ Phenomenon

－ Alarm window : GREEN → RED

■ Causes

－ Occur the problems at harbness connected DTU board or DTU board