Furuno FS-1562-25 Weekly Checks, Diagnostic Test, Testing the transmitter with a dummy antenna

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Chapter 4 MAINTENANCE

4.1 Weekly Checks

Check the radiotelephone at appropriate intervals as required by Administration. For instance, Japanese Administration requires check of DSC every day. US 47 CFR 47, PART 80.869-Test of radiotelephone station calls for: Unless the normal use of the required radiotelephone station demonstrates that the equipment is operating, a test communication on a required or working frequency must be made each day the ship is navigated.

Testing the transmitter with a dummy antenna

1.While pressing and holding down the [ALARM] key, press the [0] key. The dummy antenna in the antenna coupler is connected to the FS-1562 instead of the antenna. “DUMMY” appears and the test signal at 2191 kHz, modulated by two tones (1300 Hz and 2200 Hz), is generated across the dummy load for 45 seconds.

2.To stop the emission, press the [ALARM] key. The dummy load is disconnected and the transceiver restores the previous frequency setting.

4.2Diagnostic Test

This test checks the transceiver for proper operation. It should be conducted regularly to ensure proper operation. If a DSC or NBDP terminal is connected, the test should be conducted together with them. Before starting the test, set the RF GAIN control to maximum (fully clockwise).

1.While pressing and holding down the [TX] key, turn on the power. All LCD segments appear.

2.Release the [TX] key. The FS-1562 starts diagnostics and the following indications appear.

-4.1-

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Contents Page T 9 9 Safety Instructions Do not disassemble or modify the equipment List of Contents Introduction FeaturesGeneral Specifications of MF/HF Radiotelephone model FS-1562Receiver Operation Rotary controls Front View of Transceiver UnitKeys Page AC and DC power switches Power Supply UnitFuses Selecting Frequency Starting operationYES TX Freq Standard type Netherlands type Special typeJ3E Direct frequency entryITU telephony channels SSB Custom channelsITU Telex channels Transmitting Tuning the antennaUsing the handset Monitoring transceiver output powerDistress Call on 2182 kHz Reducing transmitter powerDistress calls and Distress message Distress frequenciesDSC Distress Calling Event of Antenna Coupler FailureReceiving Channel scan Frequency ScanSquelch control Noise blanker NBITU channels Frequency SweepTelex Communication Optional DevicesRemote Station IntercomSetting Page Page This page is intentionally left blank Testing the transmitter with a dummy antenna Diagnostic TestWeekly Checks Page LCD/Keyboard Test & ROM Version No. Confirmation Competent technicians only Antenna Coupler TestMaintenance Page Troubleshooting List For qualified personnel only TroubleshootingTrouble Probable Cause Remedy Replacing Fuses Error IndicationThis page is intentionally left blank Appendix MF band working carrier frequencies ref. US CFR 47 Part CH no MF band SSB working carrier frequenciesFollowing frequencies are factory programmed MHz ITU SSB carrier frequencies ITU RR AppendixAP.5 12/16 MHz ITU SSB carrier frequencies ITU RR Appendix AP.7 MF Band Telex Frequency Table Telex ChannelsITU RR Appendix MHz Band ITU Nbdp Telex Frequency TableAP.10 AP.11 12/16 MHz Band ITU Nbdp Telex Frequency Table AP.13 18/19 MHz Band ITU Nbdp Telex Frequency Table AP.15 22, 25/26 MHz Band ITU Nbdp Telex Frequency Table