Furuno FS-1562-25, FS-1562-15 manual Troubleshooting List For qualified personnel only

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Chapter 5 TROUBLESHOOTING

5.1 Troubleshooting List

For qualified personnel only

The troubleshooting list below gives common symptoms of equipment malfunction and means to restore normal operation. If you cannot restore normal operation, please do not check inside any unit. Any repair is best left to a qualified radiotelephone technician. Improper handling or adjustment may cause more serious damage.

Troubleshooting list

TROUBLE	PROBABLE CAUSE	REMEDY

Power can not be turned on	The mains switchboard may be	Turn on the mains switch.
	off.
	DC overvoltage input.	Check supply voltage. It should
	The battery may have	be less than 31.2V
	The battery may have	Recharge battery and tighten
	discharged, or poor contact at	terminal connections.
	terminals.
	Check fuse on the power cable	Replace the blown fuses.
	or Power Supply Unit.

Frequency readout appears	The [DIMMER] key may be	Operate the [DIMMER] key.
but no lamps light	off.

Power is on but no sound	The [SPEAKER] key is off.	Press the [SPEAKER] key.
from loudspeaker	Volume may be too low.	Adjust the VOLUME control.
	Volume may be too low.	Adjust the VOLUME control.
	Squelch is on.	Press the [SQ] key if "SQ"
		appears on the display.
	Reduced RF Gain.	Turn the RF Gain control
		clockwise.

Poor articulation	Wrong class of emission may	Select class of emission same as
	be in use. (For example,	that of incoming signal.
	receiving signal in J3E mode.
	J3E should be used only on
	2182 kHz.)	In Custom or ITU channel
		In Custom or ITU channel
	Receiver detuned.	mode, press the [CLARIFY]
		key then fine tune frequency by
		the FREQ/CH control.

Output power is reduced to	Power is automatically reduced	Wait until the unit returns to
low ("LOW" indication	to protect against overheating	normal condition.
blinks)	due to continuous transmission.

-5.1-

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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 Using the handset Tuning the antennaMonitoring transceiver output power TransmittingDistress Call on 2182 kHz Reducing transmitter powerDistress calls and Distress message Distress frequenciesDSC Distress Calling Event of Antenna Coupler FailureReceiving Squelch control Frequency ScanNoise blanker NB Channel scanITU 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