Troubleshooting – Olson Technology OTEB-CW-B User Manual

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5. Troubleshooting

1. Troubleshooting personnel must be trained in (Class IIIb) laser safety.

2. Caution: follow laser safety procedures at all times.

3. Caution: follow correct fiber handling and cleaning procedures (see above).

4. NOTE: It can not be stressed enough that the most common causes of equipment

alarm, or poor quality of service is due to incorrect optical fiber connector mating and
poor optical fiber connector end face cleanliness. In general whenever a problem is
located at a specific port, the Technician should first verify that the connection type is
correct for that mate location and that both fiber end-faces of the mate are clean.

5. Electrical issues:

a. If no LED illumination on front panel of unit:

i. Check polarity and voltage of external power supply to rear panel elec-

trical power terminal strip

ii. Check power supply cards are installed correctly

iii. Check fuses for continuity

b. -48V status LED in major or minor state

i. If unit is operating but one of the power supply cards does not have

green status LED illumination

1. Check power supply card for physical damage/replace power

supply card.

2. Check that the power supply card is completely inserted.

ii. If Unit is operating and both of the power supply cards have illuminated

green status LED’s.

1. Check fuses for continuity.

c. Fan alarm in major or minor state

i. This indicates that one or more of the fans mounted to the rear of the

unit are not operating within specified rotational speed range.

ii. Replace any fans that are stopped or rotating slowly or making abnor-

mally loud operating noise.