Nautel V10, Руководство пользователя по установке и эксплуатации

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Page 5-14
V10/V7.5/V5/V3.5 Installation and Operation Manual
Issue 3.5 Section 5 System Level Troubleshooting
NOTE
Following each troubleshooting action,
press Reset. If the alarm cannot be reset,
continue troubleshooting. If transmitter
operation is restored to the desired power
level, the fault has been cleared.
In the Module Status screen (see below),
monitor each RF power and IPA module’s
parameters for out-of-tolerance values or
indicated (flashing) failures:
5.5.2.5.1 Module Offline
A communications problem exists
between the control/display PWB (A43)
and the suspect RF power or IPA module.
Troubleshoot as follows:
•
For IPA modules, the GUI may display
IPA A Missing (V10/V7.5), IPA B
Missing (V10/V7.5), or IPA Missing
(V5/V3.5).
•
Ensure the IPA or RF power module is
installed properly. Switch the applicable
switching power supply to
STANDBY .
Slide the module slightly forward and
push back on it to engage its blind-mate
connectors. Switch the applicable
switching power supply to
ON . Press
Reset . If the module remains ‘Offline’ or
‘Missing’, there may be a problem with
its interconnect PWB [A17 (IPA A), A18
(IPA B), A23 (A) - A30 (H) for V10; A17
(IPA A), A18 (IPA B), A23 (A) - A25 (C),
A27 (E) - A29 (G) for V7.5; A17 (IPA A),
A23 (A) - A26 (D) for V5; or A17 (IPA
A), A23 (A) - A25 (C) for V3.5] or with
the ribbon cable connecting the module
to the control/ display PWB.
•
Verify the dipswitch settings on the
applicable module’s interconnect PWB.
Refer to Section 3 for details on
dipswitch settings.
•
If all dipswitches are set properly, the
problem is likely related to the power
module interface PWB (A5) of the
applicable module, or with the control/
display PWB (A43).
5.5.2.5.2 High Module Temperature
The temperature in an RF power or IPA
module exceeds 100
°
C due to a failed fan
or a blockage in the module's normal air
flow. The associated switching power
supply module(s) will be inhibited,
therefore reducing the total RF output
power or, for an IPA module, causing the
transmitter response described in 5.5.2.
NOTE
When testing for voltage on fan
connectors, the transmitter’s RF power
stage must be enabled (RF On).
(a) Check airflow at the front of the RF
power or IPA module and check the
cooling fan for blockage. If the fan is
functioning properly (compared to the
other fans), a problem may exist with
the failure detection circuitry on the
power module interface PWB (A5).
(b) Measure voltage between pin 1 (+) and
pin 3 (-) of the suspect fan’s connector
(B#P1) while connected to its
associated interconnect PWB.
•
If the voltage is between 47 V and 53 V,
the fan is probably defective and should
be replaced (see 5.6).
•
If the voltage is not between 47 V and
53 V, check the voltage between
E1 (+) and E2 (-) of the PS interface
PWB [A2 (IPA A), A3 (IPA B, V10/V7.5
only), or A4 (A) - A11 (H) as
applicable] associated with the IPA or
RF power module. If the voltage is
present, a wiring defect may exist. If no
voltage is present, check for a hot PTC
[RT1 (A) - RT8 (H) as applicable, RT9
(IPA A) or RT10 (IPA B, V10/V7.5
only)] on the fan distribution PWB
(A12). If the PTC is hot, suspect a
faulty fan or wiring defect.
(c) If a fan is defective, replace it with a
functional fan (see 5.6).