Midland Radio SP-300 service manual Component Pinout, KTA1504SY

Page 41

MAXON

SP-300 HAND HELD

COMPONENT PINOUT

 

MANUFACTURER'S

 

 

BASE DIAGRAM

PART NUMBER

REFERENCE NO.

SCHEMATIC

 

 

 

 

 

2SC5084

Q202,203,302,303,601

 

 

 

MMBR951

Q16,17,501,601

 

C

 

 

 

 

 

 

 

B

 

 

 

 

 

E

 

BFR92A

Q12,16,25

 

 

 

KTC3875S (BL)

Q6,11,13,14,21,26,27

 

 

C

 

 

 

C

 

 

 

 

 

KTA1504SY

Q7,8,33

B

 

E

 

 

 

E

B

 

 

 

C

 

 

 

 

 

 

Q18,23,24,28,31,32,34,403,

47K

 

 

KRC104S (ND)

 

B

 

 

Q404,405,411,413

 

 

 

 

 

 

 

 

 

47K

E

 

KRA104S (PD)

Q5,410,412

 

C

 

47K

 

 

 

 

B

 

 

KRA101S (PA)

Q406,407

47K

E

 

 

 

 

 

 

 

C

 

KRA110S (NK)

Q2,3,4,401,416

4.7K

 

 

B

 

 

 

 

 

E

 

 

 

 

C

 

 

 

10K

 

 

KRA102S (PB)

Q1

B

 

 

 

 

 

 

 

10K

E

3

 

 

 

 

 

MMBZ5232B

D405, 406, 407

 

 

2

 

 

 

 

1

 

 

 

 

 

KDS181 (A3)

D1,13,14,401,402,501

 

 

 

KDS193 (F3)

D8,11,12,403

 

 

1

 

 

 

 

3

KDS226 (C3)

D601,901,902

 

 

 

 

 

 

2

 

 

 

 

 

KDS184 (B3)

D404

 

 

 

UPP9401

D5,6

 

 

 

 

Page -38-

 

 

 

 

May 2001

 

 

Page 40 Page 42
Image 41
Page 40 Page 42
Contents Service Manual Table of Contents Board Layout Exploded View Temperature Range SpecificationsGeneral Current ConsumptionWeight DimensionsAdjacent Channel Power Frequency BandsPeak Deviation @ 1 kHz Nom. Dev +20dB ReceiverRX Tone Demodulation Characteristics SP-300INTRODUCTION FeaturesBusy Channel Lockout VCO Lock Time Description Description of ControlsDigital Circuits Theory of OperationRF Circuits RF Circuits PLL Synthesizer KHz Band Pass Filter Squelch mute CircuitNoise Detector Speaker Audio AmplifierRemoving & Replacing the Belt Clip Maintenance and RepairRemoving the belt clip To replace the belt clipTo remove the battery Removing & Replacing the BatteryTo replace the battery To remove the PTT assemblyRemoving & Replacing the Antenna & Control Knobs Removing & Replacing the ACCES- Sory ConnectorTo replace the Back Cover Removing & Replacing the Back CoverTo remove the Back Cover To remove the Main Board Removing & Replacing the Main BoardTo replace the Main Board Removing & Replacing the Speaker Component ReplacementRemoving & Replacing the DAUGH- TER Boards Surface Mounted Integrated Circuit Replacement Surface Mount Component ReplacementCloning Alignment ProcedureProgramming RX VCO S.G. @ 1kHz Audio Test Equipment SetupTP1 Alignment Points DiagramSymptoms Causes Counter Measures Troubleshooting GuideMain Circuit Voltage ChartsReceive State Transmit State REF# Description PART# SP-300 Series UHF & VHF Digital Section Parts List-30- May REF # Description Replacement Modules SP-300 Series VHF RF Section Parts List-32- May -33- May SP-300 Series UHF RF Section Parts List -35- May -36- May -37- May KTA1504SY Component Pinout-39- May Base Diagram PIN Description UHF Power AMP VHF Power AMPVHF FRONT-END UHF FRONT-ENDUHF V.C.O VHF V.C.OFuse ACC-200 BatteryTcxo SP-300 Series VHF RF Schematic UHF RF Schematic -47- May Board Layout Top Main Board Assembly 416121B -49- May
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