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6. MAINTENANCE and TROUBLESHOOTING
Troubleshooting
If an 86431 Power Unit is suspected of being defective, replace it with a known-
good 86431 Power Unit and if the replacement unit functions properly, return the
original to GE Multilin for repair or replacement.
Note: An old-generation (B)86431-0X Power Unit can be replaced with a new-
generation B86431-4X Power Unit and vice versa as long as they have the same
external voltage rating (digit X must be the same). However, caution should be
exercised when replacing a B86431-4X unit with a (B)86431-0X unit if the
nominal shelf load exceeds 18 W.
The following table is intended to provide the user with possible solutions to
problems that may be encountered during normal unit operation.
Symptom
LED off
(B)86431-0X unit:
One of the following two conditions exists:
- The unit is energized and providing power to the shelf.
- None of the power units on the local power bus are energized.
B86431-4X unit:
- None of the power units on the local power bus are energized.
LED Green
(B)86431-0X unit:
Not applicable.
B86431-4X unit:
- The unit is energized and providing power to the shelf.
LED Red
(B)86431-0X and B86431-4X unit:
One of the following three conditions exists:
- Station battery not connected to the this unit's paddleboard.
- Fuse is removed or blown. Install/replace the fuse with proper rating.
- Voltage converter on the unit has failed. Replace the unit.
Copyright GE Multilin Inc. 2001-2013
Probable Cause / Solution
Table 1: Troubleshooting Table
342-86400-431PS
Issue 2.1
March 2013
Page 19
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