Black Box MX880A, Руководство пользователя

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CHAPTER 6: Troubleshooting
This chapter lists some problems that might occur during installation and
operation of your mux, along with some possible solutions.
CAUTION!
These service instructions are for use by qualified personnel only.
To avoid shock, do not perform any service action not listed below.
6.1 Front-Panel Indicators Don’t Light
1. Make sure power is being supplied to the unit. If the outlet the mux
is plugged into does work, and the power cord shows no signs of being
broken:
2. Try replacing the mux’s fuse. If this doesn’t help:
3. The fault might be in the unit’s power-supply circuits. Call your supplier.
6.2 Local Sync Loss LED Is ON
1. Push the “LLB” button on the mux’s front panel to trigger its local
loopback test. If the Test LED comes ON and the Local Sync Loss LED
goes OFF, go to Step 2. If this doesn’t happen, try replacing the local
unit:
A) If you don’t have a replacement unit, call your supplier.
B) If the system works fine with the replacement unit, the original local
unit is probably faulty. Send it to your supplier for repair.
C) If the system doesn’t work even with the replacement unit, go to
Step 2.
2. Push the “RLB” button on the mux’s front panel to trigger its remote
6.0 Troubleshooting