Sea Tel 4009-9 BROADBAND-AT-SEA, Руководство по установке

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4009-9 Installation Manual Installation Troubleshooting
16-2
the problem. Refer to the Drawings section of this manual and your antenna manual for any/all pertinent block
diagrams, schematics, wiring diagrams and assembly drawings to aid in diagnosing any type of failure.
Try pressing RESET first and then in some cases you may want to turn Power OFF for a short period of time then
turn it back ON to see if that restores normal operation. Remember, with most Gyro Compass types (Synchro and
SBS inputs) you MUST enter the beginning Heading value EVERY time you power-up the ACU, before you will be
able to retarget your desired satellite.
Verify that the SETUP PARAMETERS are set correctly (refer to the Setup section of this manual).
16.2.1. ACU display is blank
This indicates no power to the internal electronics. Assure that the front panel power switch is ON.
Check the AC line voltage on the power cord. Check the cables on the rear panel of the ACU to assure
they are properly connected. If AC Line voltage is ok, one at a time disconnect (and check display status)
the cables plugged into J1 Gyro Compass, then J2 NMEA, then J3 M&C to see if one of these cables is
shorting the ACU power. Call your dealer to report this failure and arrange for repair service.
16.2.2. ACU Status displays "REMOTE NOT RESPONDING"
This indicates a problem in the antenna control coax cable or communications modems in the ACU
and/or antenna PCU. Check the antenna control cable connections at the J4 “Antenna” jack on the rear
of the ACU and at the antenna pedestal inside the radome. If the connections are good, call your dealer
to report this failure and arrange for repair service.
16.3. Troubleshooting Ships Gyro Compass problems
Ships Heading display does not follow ships movement and/or you are getting frequent or constant ERROR CODE
0001. Determine the type of gyro compass that is used on the ship, assure that the GYRO TYPE parameter is set
correctly (refer to the setup section of this manual) and then proceed to the step that lists the troubleshooting for
the correct type of Gyro Compass Signal.
16.3.1. STEP-BY-STEP
1. Verify that the GYRO TYPE parameter is set correctly.
2. Observe the ERROR LED on the FRONT panel. If it is illuminated, this indicates that an error
was detected in the Step-By-Step input. Press RESET on the front panel. If the ERROR LED
illuminates again, the problem is in the four connections to A, B, C and COMMON.
3. Check the connections to the TMS and to the ACU.
4. Measure the voltage between COMMON and A, B, and C. Each reading should either be near
zero or 35 to 70 VDC. If all three are zero, check the repeater fuses. If some read negative and
some read positive or if one reads an intermediate values the COMMON terminal is not properly
connected.
5. If the Ship - Heading display is different from the actual Gyro heading, access the Heading entry
menu and key in the correct heading value (refer to the operation Ship menu section). Note the
reading. After the ship has turned more than one degree, compare the new gyro heading with
the reading on the display, if it has moved in the opposite direction then reverse connections A
and B. Reset the ACU, put in the correct ship's heading again and verify that the display reading
now follows the Gyro heading.