Motorola GR300 service manual Section Maintenance

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Section 5

Maintenance

Overview

This section contains information and procedures that will enable the technician to proform preventive maintenance and troubleshooting techniques on the ZR310 Community Repeater Panel. Fault isolation and component-level troubleshooting are not covered in the section.

Preventive Maintenance

Preventive maintenance of the ZR310 consists of:

Visual inspection

Periodic cleaning

Checks using diagnostic commands entered via the DTMF keyboard

Visual Inspection

Check that external surface of the equipment are clean, that connecting cables are not damaged, and that connections are firm. A detailed inspection of the interior electronic circuitry is not needed or desired.

Cleaning

Periodically clean smugges and grime from the exterior housing. Use a soft, non-abrasive cloth moistened in a mild soap and water solution. Rinse the surface using a second cloth moistened in clean water.

Diagnostic Commands

Refer to Programming section, Diagnostic Commands.

Disassembly

In order to inspect the cable and other components, and to remove the top cover, you must remove the ZR310 from the GR300 housing. Complete the steps in paragraphs 3.1 and 3.2 to accomplish this.

Removal

To remove the ZR310 from the repeater housing, perform the following steps:

1.Place the GR300 power switch to off and unplug the ac line from the ac supply outlet.

2.Using a T15 Torx screwdriver, remove the four M3.5x0.6x6 taptite screws (3) that secure the fan assembly to the repeater housing.

3.Remove the fan assembly (1) and rest it on top of the repeater housing.

March, 1993

6880902Z68-O

Section 5-1

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Contents Radius GR300 Table Of Contents ZR310 Community Repeater Panel Theory of Operation Table Of Contents ZR310 Community Repeater Panel Appendix a Dtmf Commands Section Introduction Standard FeaturesSystem Configuration OverviewUser Functions Physical DescriptionSection Introduction Installation Procedures Section InstallationEquipment Required For Installation AssemblyZR310, Rear View Fan Installation Section Installation Section 6880902Z68-O March GR300 Housing Kit HLN8391 Part Number Description QtyMarch 6880902Z68-O Section Section Operation Carrier Repeat When a User Unkeys RadioRegenerated TPL/DPL/CSQ Reserved UsersStuck Mic Timeout Timer Reserve ModeBarge In Privacy Mode Accessory PTT EncodeRepeater Set-up/Knockdown Section Theory of Operation Beep Tone Encoding TPL EncodingDPL Encoding Squelch/Repeater AudioSection Maintenance Troubleshooting Top Cover RemovalSection Programming Programming Via Radio Service Software RSSGetting Started Get/Save, Repeater Mode Programming the RepeaterReading the Transmitter Radio Reading the Receiver Read Receiver Screen March 6880902Z68-O SectionConfiguring the System Command Key Function System Programmable Fields Morse ID interval, Speed, and FrequencyCarrier Only Repeat Open Repeater Enable a User User Programmable FieldsView All Users Radio ParametersLow Battery Alert Customizing Your AccessoriesEntering the Program Mode Programming Over-The-AirExiting the Program Mode Entering a CommandSystem Commands Program Mode Access CodeMic Dtmf Hang Time Station ID Frequency Carrier Repeat CSQ UserSystem ID User Station ID IntervalStation ID Speed Appendix a Dtmf Commands Table A-1. Dtmf System Commands Function ParmeterTable A-2. Dtmf Diagnostic Commands Function Parameter