Nautel VS1, Руководство по устранению неисправностей

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VS1 Troubleshooting Manual Responding to alarms
Issue 10.0 2018-10-29 Page 1-43
Exciter/Control PWB Replacement
See Figure
MD-1
(top view) in the Mechanical Drawings section (Section 6) of this manual.
1. Remove the transmitter’s top cover. Retain hardware for re-installation.
2. Disconnect all mating plugs from the exciter/control PWB (A1), both inside the transmitter
and at the rear of the transmitter.
3. At the rear panel, remove any securing hardware for connectors that protrude through the
rear panel. Retain all hardware for re-installation.
• Locate the two DB-25 connectors (J2A and J2B) and the two DB-9 connectors (J5A and
J5B) on the rear panel. Using a 5 mm nut driver or socket, remove the mounting nuts.
• Locate the AES/EBU XLR audio connector (J3) on the rear panel. Remove the two
small pan-head Phillips screws.
• Remove the silver push button connector lock (“push” lever) on the XLR connector.
Locate the HAS78 removal tool from the ancillary kit, provided with the transmitter.
Follow the manufacturer's instructions in
Figure 1.6 on page 1-44 to remove the push
button. You will need access to the front and rear of the receptacle to remove it.
4. See Figure 1.7 on page 1-44 . Remove the locking rings from five BNC connectors (J4A, J4B,
J6A, J6B and J7). To remove the locking rings, use small 4 - 6 inch slip-jaw pliers. Gently
loosen (do not tightly pinch or deform) each locking ring. Typically, half a turn with the pliers
will loosen a locking ring enough to remove it by hand. Remove and retain the locking rings.
5. Remove the three small Phillips screws, which mount the front of the exciter/control PWB
to the chassis, located along the edge of the exciter/control PWB. Retain hardware for re-
installation.
NOTE:
The exciter/control PWB is static sensitive and must be handled in a static protected manner.