Motorola 6816101H01-A service manual R425 R426 R216 FL701 R215

Page 38

3-4	Hardware Tuning Setup and Procedure

4.Using the ceramic tool, adjust R425 to tune high power (refer to Figure 3-2).

R425

R426

R216

FL701

R215

Figure 3-2 Tuning Ports

2.3.2Low Power

1.Connect the radio to power meter.

2.Set the radio to the appropriate tuning frequency (refer to Table 3-1).

3.Key up the radio.

4.Using the ceramic tool, adjust R426 to tune low power (refer to Figure 3-2).

2.3.3Frequency Tuning

1.Set the radio to the appropriate tuning frequency (refer to Table 3-1).

2.Using the ceramic tool, adjust FL701 to tune the frequency (refer to Figure 3-2).

2.3.4Modulation Balancing

1.Set the radio to the appropriate tuning frequency (refer to Table 3-1).

2.On the test equipment, set the following configurations:

Audio bandwidth: 0.25Hz to 15,000Hz.

De-emphasis: Off

FM: Peak negative

3.Using the Audio Analyzer, inject a 0.3kHz tone to the radio through the test box.

4.Key up the radio.

Image 38

Contents Mag One by Motorola Radio Series Computer Software Copyrights Document History Page Safety Information Federal Communication Commission FCC RegulationsCompliance with RF Exposure Standards GuidelinesElectromagnetic Interference/Compatibility Other Medical Devices Operational WarningsHearing Aids Use of communication devices while drivingOperational Cautions for Intrinsic Safe Equipment Operational CautionsIntrinsically Safe Radio Information Do Not Substitute Options or Accessories RepairTable of Contents Radio Programming Glossary of TermsIntroduction Warranty and Service SupportWarranty Period and Return Instructions Scope of ManualTechnical Support After Warranty PeriodPiece Parts Further Assistance From MotorolaRadio Model Information Unit LevelRadio Features CPSCleaning Procedures MaintenancePreventive Maintenance IntroductionSafe Handling of Cmos and Ldmos Devices Repair Procedures and Techniques General Disassembling and Reassembling the Radio General Front Cover from Chassis Disassembly Radio Disassembly DetailedRadio Disassembly Detailed Speaker Wire Radio Disassembly Detailed PC Board Reassembly Radio Reassembly DetailedPC Board Disassembly Chassis and Front Cover Reassembly Radio Reassembly Detailed Speaker Connector Reference Mechanical View and Parts ListExploded View and Parts List Part Name QtyReference Part Name Qty Reference Part Name Qty PMNN4071RC PMUD2221ADescription Application Service AidsMotorola Part Programming Cable PMDN4043R Motorola Description Characteristics ApplicationTest Equipment Cloning Cable PMDN4060R otes Test Box PMDN4040RRadio Tuning Hardware Tuning Setup and Procedure Tuning FrequencyGround Contact Finger R425 R426 R216 FL701 R215 TP1 Subtone Level 42 ± 0.02kHz 96 ± 0.02kHz R425 R426 C722 Page Radio Programming Programming Your RadioCPS Programming Kit NumberFactory Reset CPS Programming SetupFactory Reset Accessories Publications Audio AccessoriesService Kits Model Description Model Chart and Test SpecificationVHF Band 1 Information 136-150 MHz A8 136-150 MHz VHF LAH84JDC8AA4ANTransmitter SpecificationsGeneral ReceiverVHF Band 2 Information 150 174 MHz A8 150-174 MHz VHF LAH84KDC8AA4ANSpecifications UHF Band 1 Information 403-425MHz A8 403-425 MHz UHF LAH84QCC8AA4ANUHF UHF Band 2 Information 450 470MHz A8 450-470 MHz UHF Specifications PMAE4028A UHF Band 4 Information 490 512 MHz A8 490-512 MHz UHFLAH84TCC8AA4AN Specifications Term Definition ResetGlossary of Terms PLLUHF ROMTPL VHF