Nautel V10, Руководство пользователя по установке и эксплуатации

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V10/V7.5/V5/V3.5 Installation and Operation Manual
Page 5-23
Section 5 System Level Troubleshooting Issue 3.5
(b) Ensure the switching power supply
module’s ON/STANDBY switch is ON
(toggle up). Press Reset in the Status
menu to verify the power supply does
not restore to normal operation.
(c) If the green
AC OK lamp is on, verify
that a fault exists with that switching
power supply module by installing the
module in another module position. It
may be necessary to remove an
operational module.
CAUTION
Before removing any switching power
supply modules, ensure their
ON/STANDBY
switch is set to
STANDBY
(toggle down).
(d) Remove the suspect switching power
supply module and an operational
switching power supply module. Install
the suspect module in the position of
the operational module. Set the
ON/STANDBY switch to ON ). Press
the Reset button in the Status menu.
(e) If the suspect module still displays a
PS Fail alarm, then the problem is with
the module. Service and repair
instructions for this module are beyond
the scope of the manual. Remove and
replace the module.
(f) If the suspect module no longer
displays a PS Fail alarm, then the
fault is not with the module, but with
the cabinet position (cabling defect).
Confirm by installing the operational
module removed in step (d) in the
suspect module’s original position.
Press the
Reset button in the Status
menu. If a PS FAIL alarm occurs, the
fault is with the cabling associated
with that cabinet position.
Possible Associated Alarms:
- PS Fail A - PS Fail D as applicable
- PS Fail E - PS Fail H (V10/V7.5) as
applicable
- IPA PS Fail A or B
5.5.6.2 Backup Battery Low Alarm
A Backup Battery Low alarm occurs if
the battery voltage falls below an
acceptable level or if there is a fault on the
control/display PWB (A43). Troubleshoot
a
Backup Battery Low alarm as follows:
(a) Measure the dc voltage across the
battery (BT1) - while installed - on the
control/display PWB (A43):
•
if the voltage is less than 2.7 V,
replace battery BT1 while the ac
power is still on.
•
if the voltage is 2.7 V or greater, verify
the alarm by either cycling the ac
power (off, then on) or checking the
alarm again in 24 hours. If the alarm
clears, it was a false alarm. If the
alarm does not clear, replace the
battery or suspect a fault with the
detection circuitry on the control/
display PWB.
Possible Associated Alarms:
- Backup Battery Low
5.5.7 Changeover Alarm
A Changeover alarm indicates an exciter,
IPA, IPA PS (V5/V3.5) or fan PS
changeover to the reserve module has
occurred for the following reasons:
NOTE
Alarms displayed on the Status screen are
real-time (current/non-latching). Use the
Events Log to determine the root cause of
a changeover alarm.
•
Exciter fault (dual exciter transmitters
only): An exciter changeover can occur
if the active exciter [A (A14) or B (A15)]
fails due to an exciter related fault,
such as
IPA Input Low alarm. See the
applicable paragraph under Exciter
(see 5.5.1) alarm to troubleshoot.