12345678910111213141544TROUBLESHOOTINGThe problems described in this table are commonly encountered operational malfunctions. These types of difficultiesare usually caused by improper hook-up, accidental incorrect control settings, or operator error due to incompleteprogramming. These problems are usually not caused by circuit failure. Please review this table, and the appropriatesection(s) of this instruction manual, before assuming your transceiver is defective.Note:Unmodulated carriers may be received due to internal frequency relationships.PageRef.Problem Probable Cause Corrective ActionNothing appears onthe display when thetransceiver isswitched ON, or thedisplay is blinkingON and OFF.1 Low supply voltage2 If using the optional DC cable:a) Bad power cable or connectionsb) Open (blown) power supply fuse1 Recharge the battery pack orreplace the batteries.2a) Check the power cable andconnections, then correct/replaceas necessary.b) Investigate the cause for theopen fuse. Replace the fuse.3, 4347—Most keys and theTuning control donot function.1 Transceiver Lock is ON (Key icon isvisible).2 The transceiver is in Channel Displaymode.3 Tone Alert is ON (Bell icon is visible).1 Press [F] (1 s) to switch OFFTransceiver Lock.2 Press [BAND]+ POWER ON to exitChannel Display mode.3 Press [F], [7] to switch OFF ToneAlert.372238Memory channelscannot be recalled.There is no data stored in any of thememory channels.Store the desired frequencies inmemory channels.18You cannot selectthe exact desiredfrequency using theTuning control.The current frequency step size needs tobe changed.Select the appropriate frequency stepsize.40