Motorola 6816101H01-A service manual R425 R426 C722

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Hardware Tuning Setup and Procedure

3-7

5.Then adjust R216 counterclockwise at the point where the Audio Frequency signal appears.

2.4.3PLL Synthesizer Tuning Rx PLL Frequency Tuning

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

2.Detect output voltage at test point TP1 (refer to Figure 3-3).

3.Using the ceramic tool, adjust C710 to tune the voltage to 5.0V +/-0.1V(refer to Figure 3-5).

R425
R426
C722	R216
C710

FL701	R215

Figure 3-5 Bottom Side of PCB

Tx PLL Frequency Tuning

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

2.Detect output voltage at test point TP1.

3.Using the ceramic tool, adjust C722 to tune the voltage below 5.0V +/-0.1V (refer to Figure 3-5).

Image 41

Contents Mag One by Motorola Radio Series Computer Software Copyrights Document History Page Federal Communication Commission FCC Regulations Safety InformationGuidelines Compliance with RF Exposure StandardsElectromagnetic Interference/Compatibility Hearing Aids Operational WarningsOther Medical Devices Use of communication devices while drivingOperational Cautions for Intrinsic Safe Equipment Operational CautionsIntrinsically Safe Radio Information Repair Do Not Substitute Options or AccessoriesTable of Contents Glossary of Terms Radio ProgrammingWarranty Period and Return Instructions Warranty and Service SupportIntroduction Scope of ManualPiece Parts After Warranty PeriodTechnical Support Further Assistance From MotorolaUnit Level Radio Model InformationCPS Radio FeaturesPreventive Maintenance MaintenanceCleaning Procedures 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 Exploded View and Parts List Mechanical View and Parts ListReference Part Name QtyReference Part Name Qty Reference Part Name Qty PMUD2221A PMNN4071RCDescription Application Service AidsMotorola Part Programming Cable PMDN4043R Motorola Description Characteristics ApplicationTest Equipment Test Box PMDN4040R Cloning Cable PMDN4060R otesRadio Tuning Tuning Frequency Hardware Tuning Setup and ProcedureGround Contact Finger R425 R426 R216 FL701 R215 TP1 Subtone Level 42 ± 0.02kHz 96 ± 0.02kHz R425 R426 C722 Page Programming Your Radio Radio ProgrammingKit Number CPS ProgrammingCPS Programming Setup Factory ResetFactory Reset Accessories Publications Audio AccessoriesService Kits VHF Band 1 Information 136-150 MHz A8 136-150 MHz VHF Model Chart and Test SpecificationModel Description LAH84JDC8AA4ANGeneral SpecificationsTransmitter ReceiverLAH84KDC8AA4AN VHF Band 2 Information 150 174 MHz A8 150-174 MHz VHFSpecifications LAH84QCC8AA4AN UHF Band 1 Information 403-425MHz A8 403-425 MHz UHFUHF 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 Glossary of Terms ResetTerm Definition PLLTPL ROMUHF VHF