Ericsson 1553-FGC 101 1010 Uen A Instrukcje Operacyjne Pobierz pdf (Strona 111)

Do not remove the covers of this equipment. Hazardous voltages are present within this equipment and may be exposed if the

covers are removed. Only Ericsson Television trained and approved service engineers are permitted to service this equipment.

CAUTION!

Do not remove the covers of this equipment. Unauthorised maintenance or the use of non-approved replacements amy affect the

equipment specification and invalidate any warranties.

This handbook does not include any maintenance information or procedures which would require the removal of covers.

If the following information fails to clear the abnormal condition, call a Service Engineer or contact Ericsson Customer Services.

Troubleshooting Preliminary Checks

Always investigate the failure symptoms fully, prior to taking remedial action. Fault diagnosis for the equipment operator is limited

to the following tasks, since the operator should NOT remove the covers of the equipment:

1. Check the front panel alarm/status LED. If this is not lit:

a) Replace the fuse in the power connector at the rear panel (see AC User Accessible Fuse Replacement).

NOTE : Only replace the fuse once. If it blows again contact Ericsson Customer Services.

b) Replace external equipment, power source and cables by substitution to check their performance.

2. Confirm that the equipment hardware configuration is suitable for the purpose and has been correctly installed and connected

(see Installing the Equipment).

3. Confirm that inappropriate operator action is not causing the problem, and that the equipment software set-up is capable of

performing the task being asked of it. If the validity of the configuration, set-up or operation is in doubt, check it (see

Operation and

Control).

4. Check that the fans are unobstructed and working correctly.

When the failure condition has been fully investigated, and the symptoms are known, proceed with fault-finding according to the

observed symptoms. If the fault persists, and cannot be rectified using the instructions given in this handbook, contact Ericsson

Customer Services. Switch off the equipment if it becomes unusable, or to protect it from further damage.

AC User Accessible Fuse Replacement

The fuse(s) are held in integral fuse carriers in the AC power inlet(s) on the rear panel. In the case of dual power supply chassiss,

there are two fuses.

NOTE : Refer to Technical Specification > Power Supplies for information about the fuse.

WARNING!

Before replacing the rear panel fuse, disconnect the unit from the supply. Failure to do so may expose hazardous voltages. Unplug

the unit from the local supply socket.

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Ericsson 1553-FGC 101 1010 Uen A Instrukcje Operacyjne Strona 111