User's Manual

Sierra ROU 10W User Manual

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－ PSU output voltage decreases 85% or under

■ Appropriate Measures

－ Solution : Replacing PSU

- Measures : Check the operation by repacing PSU

(3) LD Alarm (MHU, ROU)

■ Phenomenon

－ Alarm window : GREEN → RED

■ Causes

－ LD of optical module is not normal

■ Appropriate Measures

－ Solution : Replacing optical module

－ Measures : Check the operation by repacing optical module

(4) PD Alarm (MHU, ROU)

■ Phenomenon

－ Alarm window : GREEN → RED

■ Causes

－ PD of optical module is not normal

■ Appropriate Measures

－ Solution : Clean optical connector and check optical cable or replacing optical moduel

－ Measures : Clean optical connector, check the optic cable and fix the problem.

If there is no falut, replace the optical module.

(5) TX/RX PLL (MHU, ROU)

■ Phenomenon

－ 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