Nautel GV30N, Troubleshooting Manual

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GV30N TROUBLESHOOTING MANUAL RESPONDING TO ALARMS
PAGE 4.1.72 VERSION 0.1 2014-11-01
1. Turn off (disable) and lock out the transmitter’s ac power source, and UPS source (to LVPS), if
applicable.
2. Identify the suspect module control/interface PWB, using the associated transmitter alarms, noting
there are three [A3 (Rack 1), A18 (Rack 2) and A34 (Rack 3)]. Remove the transmitter’s
appropriate
upper, rear panel and open the front door.
3. From the front of the transmitter, remove the RF power modules that are mated with the suspect
module control/interface PWB.
4. Disconnect the mating connectors from the suspect module control/interface PWB.
5. Remove 14 sets of M3 nuts and washers that secure the module control/interface PWB to the
transmitter. Remove eight M3 screws that connect the PWB’s edge-card connectors to the
transmitter. Pull out the module control/interface PWB.
6. Obtain a replacement module control/interface PWB (Nautel Part # NAPC158B) and install it by
reversing the instructions in
Step 1 through Step 5 .
7. From the rear of the transmitter, set DIP switch S1 as follows:
8. Re-install the RF power modules.
9. Enable and turn on ac power to the transmitter.
10. Return the transmitter to service.
S1 Position
A34S1 Setting
(Rack 3)
A18S1 Setting
(Rack 2)
A3S1 Setting
(Rack 1)
6 OFF (right) OFF (right) OFF (right)
5 (F BTLDR) OFF (right) OFF (right) OFF (right)
4 (RS485 TERM) ON (left) OFF (right) OFF (right)
3 (ADDR 1) OFF (right) ON (left) OFF (right)
2 (ADDR 2) ON (left) OFF (right) OFF (right)
1 OFF (right) OFF (right) OFF (right)