Nikon CM200 service manual Radio Disassembly Detailed, Control Head Removal, Volume Knob Removal

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2-4	MAINTENANCE

6.0Radio Disassembly - Detailed

The procedure to remove and replace a Control Head, Top Cover or Transceiver Board is similar for all models of radio. A typical procedure is therefore shown followed by specific disassembly procedures for Control Heads on radio models without a display and radio models fitted with a display.

6.1Control Head Removal

NOTE Ensure that the volume knob is in the OFF position before disassembling the radio.

Volume Knob Removal

1.Insert the flat screwdriver between the control head plastic and the volume knob and push the volume knob upwards. See Figure 2-1.

Figure 2-1Volume Knob Removal.

2.Insert the flat screw driver (4 mm maximum) into the slot and push the plastic up.

Do the same with the second slot to free the control head from the chassis assembly. See Figure 2-2.

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Contents Commercial Series Page CM200/CM300/PM400 Radios Foreword Table of Contents Transceiver Performance Testing Glossary This page Intentionally Left Blank Safety Information Product Safety and RF Exposure ComplianceThis page is Intentionally Blank Introduction Replacement Parts Ordering Radio Model Information This page Intentionally Left Blank Chapter Preventive MaintenanceCleaning Procedures IntroductionCleaning Internal Circuit Boards and Components Safe Handling of Cmos and Ldmos DevicesDisassembling and Reassembling the Radio General Repair Procedures and Techniques GeneralParts Replacement and Substitution Rigid Circuit BoardsRadio Disassembly Detailed Volume Knob RemovalControl Head Removal 3Flat Cable Removal Top Cover Removal 5Top Cover Removal Chassis HorizontalMain Shield Removal PA Shield and DC Cable RemovalPA Clip and Main PCB Removal for Low Power Models 8PA Shield and DC Cable Removal for High Power ModelsMain PCB Removal for High Power Models 10PA Clip and Main PCB Removal for High Power ModelsDisassembly of Control Head CM200 PCBDisassembly of Control Heads CM300/PM400 12Control Head Housing Removal CM300/PM400Radio Assembly Chassis Assembly for Low Power ModelsChassis Assembly for High Power Models Control Heads Assembly Control Head FittingOption Board Installation Radio Exploded Mechanical Views and Parts Lists Radio Assembly 1-25 W ModelsItem No Description Part Number Radio Assembly 25-40 W/25-45 W Models Control Head CM200 Item no DescriptionControl Head CM300/PM400 Service Aids Motorola Part Description ApplicationTest Equipment Programming/Test Cable RKN4083 FLO830308-020Pin Configuration of FKN8113 Adapter Cable FKN8113General SetupService Monitor Test Set Power Supply Table Number TitleHSS RF Test ModeTo enter test mode display radios CMPTest Mode Test Name Communications Analyzer Radio Test Set CommentTPL DtmfPL/DPL DPLSinad This page Intentionally Left Blank CPS Programming/Flashing Setup with RIB Description Kit NumberCPS CPS Programming/Flashing Setup Ribless CPS Programming Setup with RIB with Telco ConnectorCPS Programming Setup with RIB Accessory Connector CPS Programming Setup with RIBRadio Tuning Setup Initial Test Equipment Control SettingsService Monitor Test Set Power Supply Power UP SELF-TEST Error CodesPower UP SELF-TEST VHF AccessoriesAntennas UHFAlarms and Accessories AudioCables Control StationPublic Address MountingData CES Wireless Technologies PeripheralsAccessory Connector Pin Function SCIMicrophone Connector Pin Function SCI/DTMFVHF2, 1-25 W, 146-174 MHz Low Power Radios146-174 MHz CM200/CM300/PM400 Model Chart Model DescriptionAAM50RNC9AA1A 438-370 MHz CM200/CM300/PM400 Model ChartUHF2, 1-25 W, 438-470 MHz AAM50RNF9AA1ANGeneral SpecificationsSpecification ESDTransmitter ReceiverVHF1, 25-45 W, 136-162 MHz High Power Radios136-162 MHz CM300 Model Chart VHF2, 25-45 W, 146-174 MHzAAM50RPC9AA1A 438-470 MHz CM200/CM300/PM400 Model ChartUHF2, 25-40 W, 438-470 MHz AAM50RPF9AA1AN465-495 MHz PM400 Model Chart UHF3, 25-40 W 465-495 MHzAAM50SPF9AA3AN VHF1 VHF2 UHF2 UHF3 35 ∝V @ 12.5 kHz ∝V @ 25 kHz MIL Standards MIL-STDGlossary of Terms Term DefinitionPLL ResetOSW PTTVCO VcobicVswr This page Intentionally Left Blank Page 6802966C15