Tellabs 7300 Series User Manual

7. Troubleshooting System Manual
Page 2-114 8/09 76.7300FP11/2, Rev A
None of the LEDs (including the Power
LEDs) in any of the modules are lit.
(Tellabs 7345 Switch only)
__ 1. Verify that -48VDC source is present.
__ 2. Verify that the Power LEDs on the Power modules are
lit. If not, go to the next symptom in this table.
__ 3. Verify that all modules are fully inserted.
__ 4. Inspect the module and backplane connectors for
damage. If connectors show no sign of damage, try
inserting the module in a different slot (if available) and
inserting a different module in the original slot.
Note: Modules should be easy to insert. If insertion is not easy,
the module may be misaligned, or the pins on the module
or backplane connector may be damaged. Forcing a
connection when one set of pins is damaged could damage
the pins on the other set.
A module does not work correctly.
__ 1. Check the active conditions for significant events
related to the module.
__ 2. If the conditions information does not reveal useful
symptoms, perform the following substeps:
__ 2.1 Unlatch module or loosen the
thumbscrew on the module.
__ 2.2 Pull the module out.
__ 2.3 Slide the module back in.
__ 2.4 Relatch the module or tighten the
thumbscrew on the module.
__ 2.5 Let the module power up.
__ 3. If possible, refer to the applicable module replacement
steps in Replace Modules, page 2-92 and install a
different module of the same type to determine whether
the module might be defective.
The Fault LED on the front panel of the
Fan Tray indicates a problem.
(Tellabs 7345 Switch only)
1. Replace the Fan Tray. Refer to Replacing a Fan Tray
(Tellabs 7345 Switch only), page 2-100.
The system intermittently experiences
random data errors in more than one
module type.
(Tellabs 7345 Switch only)
__ 1. Verify that the shelf’s ground and frame-ground
connection is properly connected to a high-quality
earth-ground connection. Refer to Grounding the
Tellabs 7300 Shelf, page 2-55.
Table 7.1 Troubleshooting Actions Based On Symptoms (Continued)
Symptom Recommended Recovery Steps

Tellabs 7300 Series Specifications

General

Brand	Tellabs
Model	7300 Series
Category	Switch
Language	English