Uniden UH-100 owner manual Care and Maintenance, Preventive Maintenance, Memory Backup

Page 45

Care and Maintenance

Notice

If the UH-100 has been subjected to extreme high temperature (above 60°C) for a prolonged period of time, blackening of the Liquid Crystal Display (LCD) may occur. This is not a fault. Normal LCD operation resumes when the temperature stabilizes back to standard operating conditions (0 to 55°C).

Preventive Maintenance

The following system checks should be made every six to twelve months:

1.Check the Standing Wave Ratio (SWR).

2.Inspect the tightness of all electrical connections.

3.Inspect the antenna coaxial cable for wear or breaks on the shielding.

4.Inspect the tightness of all screws and other mounting hardware.

Troubleshooting

Should the unit malfunction or perform poorly, follow the procedures indicated below:

1.If the transceiver is completely inoperative...

*Check the power cord and fuse.

2.If there is trouble with receiving...

*Check the VOLUME control setting.

*Be sure the SQUELCH is adjusted properly. Possibly the radio is over-squelched.

*Check that the radio is in an operational mode.

3.If there is trouble with transmitting...

*Check that the transmission line (coaxial cable) is securely connected to the ANTENNA connector.

*Check that the antenna is fully extended for proper operation.

*Check that all transmission line (coaxial cable) connections are secure and free of corrosion.

Memory Backup

A built-in capacitor protects the channels stored in the SUNDOWNER UH-100 memory for up to 2 weeks after the DC power cable is disconnected.

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Contents Sundowner UH-100 Scanning Table of Contents TransmitterSection Controls I Indicators I Connectors 11 ~ Connectors FrontPanel Introduction Included with your UH-100 @@ ~~ ~Operation Setting the SquelchSelecting a Channel ~15QTransmitting Using Repeater ChannelsTo operate UH-100 in Duplex Mode LI @ OfF MEM, -, ~@ 1711OOMHz Choosing a Priority Channel Drop-Out DelayProgramming Scan Channels ~ ~Channel Seeking Operation EM. ,-,s ...II~ IVoice Scrambler LCD backlight level can be changed to BRIGHT, DIM, or OFF LCD Backlight Level ControlSelective Calling Making a Call This is UH-100 CallingAcknowledgment Tone ILl~~~ Transmitting ID from Memory $ TIReceiving a Call ~I~~~~r ILl ~~~~~GD e23450 23451 23452 23453 23454 Group CallingTone squelch Receiver Quieting Activating the Tone Squelch Receiver Quieting Receiving Calls when in Quiet Mode~ ~~ 150- I ~@ Selcall Advance ProgrammingPage Radio ID Programming TSQ,- -IISTone Period Programming +~Pn.cLead -In Delay Programming TSO Rsa Alarm Mode Programming II i~ ~A~ Group Call Mode ProgrammingCaller ID Decoding Service Care and Maintenance Preventive MaintenanceMemory Backup Uhfcb Channel Information Simplex Operating ModeAssignment Frequency MHz Duplex Operating ModeGeneral SpecificationsMeasurement Conditions Transmitter SectionReceiver Section Selcall Warranty UnidE!n@
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