Tadiran Telecom Coral IPx Office, Installation And Hardware Reference Manual, Page: 243 / 510

Coral IPx Office Installation Manual Power Supply
7-9
PS
Office AC Power S
upply Unit
7
Removing the Power Supply
1. Locate a desk or a table top. If the surface can be damaged by sharp objects,
place a protective sheet of cardboard or similar material over the top surface.
2. Turn the PS Office AC power switch off (downwards).
3. Unplug the AC power cord from the front panel. See
Figure 7-5 .
4. Unfasten the two removable screws on the front panel of the PS Office AC and
safeguard them for future reassembly. See
Figure 7-1 .
5. Carefully remove the PS Office AC from its slot.
6. Place the PS Office AC over the anti-static material with the component side
facing upwards.
0.
The PS Office AC unit does not include an alarm LED indicator. The front panel of
the IPx Office unit includes eight (8) diagnostic LED indicators. For information on
troubleshooting, see
Figure 6-3
on page 6-3
.
Power supply failure generally results in the loss of one or more output voltages.
However, protection circuitry in the power supply regulator may shut down a regulator
due to a current overload caused by an external fault.
All maintenance activities are to be carried out by a qualified service technician.
If the power supply is turned ON and power is not present in the system, check the
following:
„
AC power cord. See
Figure 7-5 .
„
AC power failure
„
Blown main or circuit fuse/breaker in the building electrical panel
„
Faulty PS Office AC
„
Blown fuse FS1 or F2 on the PS Office AC. Replace fuse as described on
Replacing the PS Office AC Fuses, page 7-10
.
Do not remove the power supply unit from the cage when turned ON. Sudden power
surges could damage system components. Before extracting the PS Office AC card,
verify that the power switch is turned OFF.
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4 Troubleshooting