Midland Radio SP-300 service manual 33- May

Page 36

MAXON

SP-300 HAND HELD

REF #

DESCRIPTION

PART #

 

REF #

DESCRIPTION

 

PART #

R31

RES,TF,300,1/16W,5%,T 1608

741-102-1301

 

R95

RES,TF,82K,5%,1/16W,+/-200,0603

741-102-1823

R32

RES,TF,300,1/16W,5%,T 1608

741-102-1301

 

R96

RES,TF,39K,5%,1/16W,TC250,0603

741-102-1393

R33

RES,TF,3.3K,5%,1/16W,+/-200,0603

741-102-1332

 

R97

RES,TF,10, 5%,1/16W, +/-200,0603

741-102-1100

R34

RES,TF,18,1/16W, 5%,T 1608

741-102-1180

 

R98

RES,TF,10K,5%,1/16W, +/-200,0603

741-102-1103

R36

RES,TF, 0,5%,1/16W, +/-200,0603

741-102-1000

 

R99

RES,TF,100K,5%,1/16W,+/-200,0603

741-102-1104

R37

RES,TF,3.3K,5%,1/16W,+/-200,0603

741-102-1332

 

R102

RES,TF,22K,5%,1/16W, +/-200,0603

741-102-1223

R41

RES,TF,100, 5%,1/16W, +/-200,0603

741-102-1101

 

R103

RES,TF,10K,5%,1/16W, +/-200,0603

741-102-1103

R42

RES,TF,12K,5%,1/16W, +/-200,0603

741-102-1123

 

R104

RES,TF,10K,5%,1/16W, +/-200,0603

741-102-1103

R43

RES,TF,10K,5%,1/16W, +/-200,0603

741-102-1103

 

R105

RES,TF,30K,5%,1/16W, +/-200,0603

741-102-1303

R45

RES,TF,12K,5%,1/16W, +/-200,0603

741-102-1123

 

R106

RES,TF,22K,5%,1/16W, +/-200,0603

741-102-1223

R46

RES,2.2K,1/16W5%T 1608

741-102-1222

 

R108

RES,TF,56K,1/16W,5%,T 1608,0603

741-102-1563

R47

RES,TF,2.2,5%,1/10W,TC250,0805

741-117-2229

 

R109

RES,0.1,1W1% 1218

 

740-521-0R10

R48

RES,TF,2.2,5%,1/10W,TC250,0805

741-117-2229

 

R110

RES,TF,270, 5%,1/16W,+/-200,0603

741-102-1271

R49

RES,TF,22,1/16W,5%,T 1608

741-102-1220

 

R111

RES,TF,10K,5%,1/16W, +/-200,0603

741-102-1103

R50

RES,TF,1M,5%,1/16W,+/-200,0603

741-102-1105

 

R112

RES,TF,22K,5%,1/16W, +/-200,0603

741-102-1223

R51

RES,TF,2.2,5%,1/10W,TC250,0805

741-117-2229

 

R113

RES,TF,470K,5%,1/16W,TC1608,0603

741-102-1474

R52

RES,TF,3.3K,5%,1/16W,+/-200,0603

741-102-1332

 

R114

RES,TF,100K,5%,1/16W,+/-200,0603

741-102-1104

R53

RES,TF,10K,5%,1/16W, +/-200,0603

741-102-1103

 

R115

RES,TF,22,1/16W,5%,T 1608

741-102-1220

R54

RES,TF,1K,5%,1/16W,+/-200,0603

741-102-1102

 

R116

RES,TF,22K,5%,1/16W, +/-200,0603

741-102-1223

R55

RES,TF,1.5K,5%,1/16W,+/-200,0603

741-102-1152

 

R117

RES,TF,22K,5%,1/16W, +/-200,0603

741-102-1223

R56

RES,270

1/16W5%T 1608

741-102-1271

 

R121

RES,TF,220K,5%,1/16W,1608

741-102-1224

R57

RES,TF,100K,5%,1/16W,+/-200,0603

741-102-1104

 

R122

RES,TF,4.7K,5%,1/16W,+/-200,0603

741-102-1472

R58

RES,TF,470K,5%,1/16W,TC1608,0603

741-102-1474

 

R123

RES,TF, 0,5%,1/16W, +/-200,0603

741-102-1000

R59

RES,TF,39,5%,50V,0603

741-102-1390

 

R125

RES,TF,22,1/16W,5%,T 1608

741-102-1220

R61

RES,68K

1/16W1%T1608

740-211-1683

 

R130

RES,TF,100, 5%,1/16W, +/-200,0603

741-102-1101

R62

RES,68K

1/16W1%T1608

740-211-1683

 

R135

RES,TF,4.7M,5%,1/16W,+/-200,0603

741-102-1475

R63

RES,TF,150,5%,1/16W,+/-200,0603

741-102-1151

 

R901

RES,TF,2.2K,5%,1/16W,TC250,0603

741-102-1222

R64

RES,TF,22,1/16W,5%,T 1608

741-102-1220

 

R902

RES,TF,2.2K,5%,1/16W,TC250,0603

741-102-1222

R65

RES,51,1/16W, 5%,T 1608

741-102-1510

 

R903

RES,TF,4.7K,5%,1/16W,+/-200,0603

741-102-1472

R66

RES,TF,100, 5%,1/16W, +/-200,0603

741-102-1101

 

R904

RES,TF,7.5K,5%,1/16W,50V,T1608,0603

741-102-1752

R67

RES,TF,22K,5%,1/16W, +/-200,0603

741-102-1223

 

R905

RES,27K,1/16W5%T 1608

741-102-1273

R68

RES,TF,22K,5%,1/16W, +/-200,0603

741-102-1223

 

R906

RES,TF,7.5K,5%,1/16W,50V,T1608,0603

741-102-1752

R69

RES,TF,470K,5%,1/16W,TC1608,0603

741-102-1474

 

R907

RES,27K,1/16W5%T 1608

741-102-1273

R70

RES,TF,470K,5%,1/16W,TC1608,0603

741-102-1474

 

R908

RES,TF,10, 5%,1/16W, +/-200,0603

741-102-1100

R71

RES,TF,1K,5%,1/16W,+/-200,0603

741-102-1102

 

R909

RES,TF,470,5%,1/16W,TC250,0603

741-102-1471

R72

RES,TF,220K,5%,1/16W,TC1608,0603

741-102-1224

 

RC56

RES,TF, 0,5%,1/16W, +/-200,0603

741-102-1000

R74

RES,TF,22K,5%,1/16W, +/-200,0603

741-102-1223

 

RL2

RES,TF, 0,5%,1/16W, +/-200,0603

741-102-1000

R75

RES,TF,47K,5%,1/16W, +/-200,0603

741-102-1473

 

RLK2

RES,TF, 0,5%,1/16W, +/-200,0603

741-102-1000

R76

RES,TF,22K,5%,1/16W, +/-200,0603

741-102-1223

 

RLK3

RES,TF, 0,5%,1/16W, +/-200,0603

741-102-1000

R77

RES,TF,22K,5%,1/16W, +/-200,0603

741-102-1223

 

RLK4

RES,TF, 0,5%,1/16W, +/-200,0603

741-102-1000

R78

RES,TF,2.7K,5%,1/16W,+/-200,0603

741-102-1272

 

RLK5

RES,TF, 0,5%,1/16W, +/-200,0603

741-102-1000

R79

RES,56,1/16W, 5%,T 1608

741-102-1560

 

RLK7

RES,TF, 0,5%,1/16W, +/-200,0603

741-102-1000

R81

RES,TF,2.7K,5%,1/16W,+/-200,0603

741-102-1272

 

RLK12

RES,TF, 0,5%,1/16W, +/-200,0603

741-102-1000

R82

RES,TF,10K,5%,1/16W, +/-200,0603

741-102-1103

 

RLK16

RES,TF, 0,5%,1/16W, +/-200,0603

741-102-1000

R83

RES,TF,18K,1/16W5%T 1608

741-102-1183

 

RV1

RES,SEMIFIXED,10KB RH0651C100103

901-002-0103

R84

RES,TF,18K,1/16W5%T 1608

741-102-1183

 

RV2

POT,ROTARY, 1K, 3DIAMM,SMD

901-001-0102

R85

RES,TF,39K,5%,1/16W,TC250,0603

741-102-1393

 

RV3

RES,SEMIFIXED,10KB RH0651C100103

901-002-0103

R86

RES,TF,1K,5%,1/16W,+/-200,0603

741-102-1102

 

RV4

POT,ROTARY, 1K, 3DIAMM,SMD

901-001-0102

R87

RES,TF,330K,5%,1/16W,+/-200,0603

741-102-1334

 

T1

COIL,IFT,SMD,455KHZQUAD

353-012-0001

R88

RES,TF,100, 5%,1/16W, +/-200,0603

741-102-1101

 

T2

TRANSFORMERSCHIP

617PT-1019

840-010-0002

R89

RES,TF,22,1/16W,5%,T 1608

741-102-1220

 

T3

TRANSFORMERSCHIP

617PT-1019

840-010-0002

R91

RES,TF,470,5%,1/16W,TC250,0603

741-102-1471

 

TH1

THERM,33K,NTCCS32163SH333KC

700-050-0002

R92

RES,TF,2.7K,5%,1/16W,+/-200,0603

741-102-1272

 

VR3

POT,20K,RK097111120KA

901-002-0203

R93

RES,TF, 0,5%,1/16W, +/-200,0603

741-102-1000

 

X1

CRYSTAL,44.645M-3015PM,32P,RX 3RD,HC-45

168-044-6450

R94

RES,TF,1K,5%,1/16W,+/-200,0603

741-102-1102

 

XF1

FILTER,CRYSTAL,KFN1045AA(45.1M) (BMO-U)

310-030-0015

Page -33- May 2001

Page 35 Page 37
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Page 35 Page 37
Contents Service Manual Table of Contents Board Layout Exploded View Specifications Temperature RangeGeneral Current ConsumptionDimensions WeightAdjacent Channel Power Frequency BandsReceiver Peak Deviation @ 1 kHz Nom. Dev +20dBRX Tone Demodulation Characteristics Features SP-300INTRODUCTIONBusy Channel Lockout VCO Lock Time Description of Controls DescriptionTheory of Operation Digital CircuitsRF Circuits RF Circuits PLL Synthesizer Squelch mute Circuit KHz Band Pass FilterNoise Detector Speaker Audio AmplifierMaintenance and Repair Removing & Replacing the Belt ClipRemoving the belt clip To replace the belt clipRemoving & Replacing the Battery To remove the batteryTo replace the battery To remove the PTT assemblyRemoving & Replacing the ACCES- Sory Connector Removing & Replacing the Antenna & Control KnobsRemoving & Replacing the Back Cover To remove the Back CoverTo replace the Back Cover Removing & Replacing the Main Board To remove the Main BoardTo replace the Main Board Component Replacement Removing & Replacing the DAUGH- TER BoardsRemoving & Replacing the Speaker Surface Mount Component Replacement Surface Mounted Integrated Circuit ReplacementAlignment Procedure ProgrammingCloning RX VCO Test Equipment Setup S.G. @ 1kHz AudioAlignment Points Diagram TP1Troubleshooting Guide Symptoms Causes Counter MeasuresVoltage Charts Main CircuitReceive State Transmit State SP-300 Series UHF & VHF Digital Section Parts List REF# Description PART#-30- May SP-300 Series VHF RF Section Parts List REF # Description Replacement Modules-32- May -33- May SP-300 Series UHF RF Section Parts List -35- May -36- May -37- May Component Pinout KTA1504SY-39- May Base Diagram PIN Description VHF Power AMP UHF Power AMPVHF FRONT-END UHF FRONT-ENDVHF V.C.O UHF V.C.OACC-200 Battery TcxoFuse SP-300 Series VHF RF Schematic UHF RF Schematic -47- May Board Layout Top Main Board Assembly 416121B -49- May
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