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P100 Series Portable Radios Detailed Service Manual...
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Service Manuals need to be updated accordingly. If you wish to be informed of these updates, kindly fill in and fax us your details. Fax to: 6-04-6124944 The Technical Publications Coordinator, Global Customer Documentation, R&D Department, Motorola Penang. Your Details Name/Contact Person: Company Name: Address: Telephone No.: Fax No.:...
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Kindly take a few moments to provide feedback on this manual. Thank you for your cooperation. Fax to: 6-04-6124944 The Technical Publications Coordinator, Global Customer Documentation, R&D Department, Motorola Penang. 1. Please check all the appropriate boxes: Disassembly Procedures Alignment Procedures...
Motorola. Furthermore, the purchase of Motorola products shall not be deemed to grant either directly or by implication, estoppel, or otherwise, any license under the copyrights, patents or patent applications of Motorola, except for the normal non-exclusive license to use that arises by operation of law in the sale of a product.
Product Safety and RF Exposure booklet enclosed with your (Motorola Publication part number 6804110J47) to ensure compliance with RF energy exposure limits. For a list of Motorola-approved antennas, and other accessories, visit the following web site which lists approved accessories: http://www.motorolasolutions.com/governmentandenterprise...
DOCUMENT HISTORY The following major changes have been implemented in this manual since the previous edition: Edition Description Date 6878282A01-A Initial edition Mar, 2009 6878282A01-B Added VHF, UHF1 and UHF1 non-RTTE band Oct, 2009 information (Chapter 8, 9, 10, 11, 12, 13) 6878282A01-C Added UHF2 R&TTE info Dec, 2009...
Table of Contents Table of Contents Copyright ......................i Safety Information..................ii Document History ..................iii Chapter 1 Maintenance ................ 1-1 Preventive Maintenance ........................ 1-1 Inspection ............................1-1 Cleaning............................1-1 Safe Handling of CMOS and LDMOS.................... 1-2 General Repair Procedures and Techniques ................1-3 Chapter 2 Test Equipment, Service Aids, and Service Tools...
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Table of Contents 4.3.8 Battery indicator ........................ 4-6 Chapter 5 435 – 480 MHz UHF2 Theory of Operation ......5-1 Introduction ............................ 5-1 UHF2 Receiver ..........................5-1 5.2.1 Receiver Front End ......................5-2 5.2.2 Receiver Back End ......................5-3 UHF2 Transmitter .......................... 5-3 5.3.1 Power Amplifier.........................
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Table of Contents 8.3.1 Power Amplifier......................... 8-3 8.3.2 Antenna Switch ......................... 8-3 8.3.3 Harmonic Filter ......................... 8-3 8.3.4 Auto Power Control......................8-4 VHF Frequency Generation Circuitry..................... 8-4 8.4.1 Reference Oscillator (12.8 MHz VCTCXO) ..............8-4 8.4.2 PLL IC Prescaler and Comparator..................8-5 8.4.3 Voltage Doubler and Charge Pump ..................
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Appendix A Warranty, Service Support, and Replacement Parts ..A-1 Scope of Manual ..........................A-1 Warranty ............................A-1 A.2.1 Warranty Period and Return Instructions................A-1 A.2.2 After Warranty Period .......................A-1 A.2.3 European Radio Support Centre (ERSC) .................A-2 A.2.4 Piece Parts........................A-3 Technical Support ..........................A-3 Further Assistance From Motorola....................A-3...
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List of Figures List of Figures Figure 2-1. Programming/Test Cable (PMDN4077_R)............... 2-3 Figure 2-2. Cloning Cable (PMDN4076_R) ..................2-3 Figure 2-3. Wiring of the Connectors....................2-3 Figure 3-1. DC Power Distribution Block Diagram................3-1 Figure 4-1. RX Audio Circuit ....................... 4-1 Figure 4-2.
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List of Figures Figure 7-37. Microprocessor and Keypad (MDC1200 and QCII) Schematic Diagram ....... 7-57 Figure 7-38. Audio Power Amplifier and External Audio (MDC1200 and QCII) Schematic Diagram . 7-58 Figure 7-39. Switches and Battery (MDC1200 and QCII) Schematic Diagram ........7-59 Figure 7-40.
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List of Figures Figure 10-25. Switches and Battery (MDC1200 and QCII) Schematic Diagram ....... 10-33 Figure 10-26. Transmitter Audio Filter and Sub-tone (MDC1200 and QCII) Schematic Diagram ..10-34 Figure 10-27. Receiver Audio Filter and Sub-tone (MDC1200 and QCII) Schematic Diagram ..10-35 Figure 10-28.
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List of Figures Figure 13-23. Transmitter Audio Filter and Sub-tone (MDC1200 and QCII) Schematic Diagram ..13-35 Figure 13-24. UHF1 (403–447 MHz) Mainboard Top Side: PCB No. E11-00946-00 ......13-36 Figure 13-25. UHF1 (403–447 MHz) Mainboard Bottom Side: PCB No. E11-00946-00 ....13-37 Figure 13-26.
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Table 12-4. Troubleshooting Table for Board and IC Signals (UHF1)..........12-4 Related Publications EMEA P100 Series – Quick Reference Card ..................6878276A01 P100 Series – Accessories Leaflet..................6878278A01 P100 Series – R&TTE Leaflet ....................6878277A01 P100 Series – User Guide......................6878279A01 P100 Series –...
Notations Used in This Manual Notations Used in This Manual Throughout the text in this publication, you will notice the use of the following notations. These notations are used to emphasize that safety hazards exist, and due care must be taken and observed. An operational procedure, practice, or condition that isessential to emphasize.
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Summary of Printed Circuit Boards and Bands Available Summary of Printed Circuit Boards and Bands Available Table below lists all the bands available in this manual. Frequency Band Bandwidth Power Level PC Board Part Number Board Chapter Revision UHF2 435 – 480 MHz 1 W or 4 W E11-000995-00* / 3* / 2...
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Summary of Printed Circuit Boards and Bands Available xvii Frequency Band Bandwidth Power Level PC Board Part Number Board Chapter Revision UHF1 403 – 447 MHz 1 W or 4 W E11-000886-00 UHF1 (MDC1200 403 – 447 MHz 1 W or 4 W E11-001016-00* / 2* / 1 and QCII)
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Summary of Printed Circuit Boards and Bands Available xviii Notes...
In order to maintain compliance, radios that are FM Approved to intrinsically safe standards MUST be repaired at FM audited service centers. See Further Assistance From Motorola on page 1-2 for more information. Preventive Maintenance Periodic visual inspection and cleaning is recommended.
• Wear a conductive wrist strap in series with a 100k resistor to ground. (Replacement wrist straps that connect to the bench top covering are Motorola part number 4280385A59). • Do not wear nylon clothing while handling CMOS devices. • Do not insert or remove CMOS devices with power applied. Check all power supplies used for testing CMOS devices to be certain that there are no voltage transients present.
When damaged parts are replaced, identical parts should be used. If the identical replacement component is not locally available, check the parts list for the proper Motorola part number and order the component from the nearest Motorola Communications parts center listed in the “Piece Parts”...
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Introduction When soldering near the connector pins: • Avoid accidentally getting solder in the connector. • Be careful not to form solder bridges between the connector pins • Closely examine your work for shorts due to solder bridges. For soldering components with Hot-Air or infra red solder systems, please check your user guide of the solder system to get information on solder temperature and time for the different housings of the integrated circuits and other components.
Chapter 2 Test Equipment, Service Aids, and Service Tools Test Equipment Table 2-1 lists test equipment required to service the radios. Table 2-1. Recommended Test Equipment Equipment Characteristics Application System analyzer This item will substitute for Frequency/Deviation meter and items with an asterisk (*) signal generator for wide-range troubleshooting and alignment Fluke 87 digital...
Test Equipment, Service Aids, and Service Tools: Service Aids Service Aids Table 2-2 lists the service aids recommended for working on the P100 Series Radios. While all of these items are available from Motorola, most are standard shop equipment items, and any equivalent item capable of the same performance may be substituted for the item listed.
Test Equipment, Service Aids, and Service Tools: Service Aids Programming/Test Cable 2.5mm stereo USB connection t Figure 2-1. Programming/Test Cable (PMDN4077_R) 2.5mm stereo 2.5mm stereo Figure 2-2. Cloning Cable (PMDN4076_R) VBUS VBUS TX_D To Computor RX_D 2.5mm stereo > 4, 5, 6 USB_CONNECTOR IC : CP2102 RX / TX data...
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Test Equipment, Service Aids, and Service Tools: Service Aids Notes...
Chapter 3 DC Power Distribution DC Regulation and Distribution A block diagram of the DC power distribution throughout the radio is shown in Figure 3-1. VCTCXO Audio filter Regulator ½ Vcc Voltage Doubler RX B+ Charge SWB+ 7.5V Pump Battery TXVB Mech SW1 3.3V...
DC Power Distribution: DC Regulation and Distribution The following regulators are used: Table 3-1. Voltage Regulators Reference No. Description Type U505 5V regulator TK11250 U506 3.3V regulator TK11233 U507 Voltage Doubler (10V) TC12140 The 5 V source from U505 is applied to: •...
Controller Theory of Operation: RX Audio Circuit • De-emphasis: This circuit restores the original state of signal of which high-frequency component has been emphasized by the pre-emphasis. • Expander: This circuit expands the signal compressed twice by the Compressor in dB scale to restore the original signal state.
Controller Theory of Operation: TX Audio Circuit TX Audio Circuit The TX audio circuit consists of MIC/External MIC, LPF, Audio processor IC, and TX Sub-tone system. For UHF1 and UHF2, refer to Figure 4-2. For VHF, refer to Figure 4-3. 4 Order LPF (Fc=4KHz) (Audio IN)
Controller Theory of Operation: TX Audio Circuit 4.2.1 MIC and External MIC The TX audio enters the radio via the internal MIC or the external MIC jack. When using the internal MIC, the audio passes through the external jack then rest of the circuits. When using the external jack, the audio from the internal MIC is cut-off from the rest of the circuits and the external MIC audio is passed to the rest of the circuits.
Controller Theory of Operation: Microprocessor Circuitry 4.2.4 TX audio amplifier and 6 order 3 kHz Low-Pass filter The TX audio signal from ASIC Pin 8 (UHF1, UHF2) or U508 Pin 4 (VHF) is linked by TX audio amp (U502-C) to increase limiting range. The limited audio signal is adjusted to a proper level by U508 and passes through 6 order 3 kHz low pass filter (U501-A,B) before being modulated.
Controller Theory of Operation: Microprocessor Circuitry 4.3.5 Sensing of VOX operating Port PTT2 (Pin 68) is used to detect the presence of VOX operating when externally connected accessories with VOX enabled. When port PTT2 is low, the VOX will start to operate. 4.3.6 Microprocessor Power-on reset Routine On power-up, the microprocessor is held in reset until the digital 3.3V regulator (U506 Pin 4)
Chapter 5 435 – 480 MHz UHF2 Theory of Operation Introduction This chapter provides a detailed theory of operation for the radio components. Schematic diagrams for the circuits described in the following paragraphs are located in Chapter 7 of this manual. UHF2 Receiver The UHF2 receiver design covers the frequency range of 435 –...
435 – 480 MHz UHF2 Theory of Operation: UHF2 Receiver 5.2.1 Receiver Front End UHF2 Incoming RF signals from antenna are first routed through the harmonic filter (L409 – L411, C426 – C429, C445, and C446) and antenna switch (CR301), part of the transmitter circuitry, before being applied to the receiver front end.
435 – 480 MHz UHF2 Theory of Operation: UHF2 Transmitter 5.2.2 Receiver Back End The 1st IF signal is amplified about 15 dB by IF amp Q303. The output of the IF amp is connected to IF IC (U201). 1st IF frequency (45.1 MHz) and 2nd LO frequency (44.645 MHz) are mixed in U201. The second mixer converts the 45.1 MHz high IF frequency to 2nd IF frequency (455 kHz).
435 – 480 MHz UHF2 Theory of Operation: UHF2 Transmitter 5.3.1 Power Amplifier The transmitter power amplifier has three stages of amplification – Pre Driver (Q401), Driver Amp (Q402) and Final Amp (Q403). Signal from TX VCO is applied to the pre driver via an attenuator circuit.
435 – 480 MHz UHF2 Theory of Operation: UHF2 Frequency Generation Circuitry UHF2 Frequency Generation Circuitry The PLL synthesizer subsystem consists of the reference oscillator (VCTCXO), VCO, PLL IC, Charge Pump and Loop Filter. TX VCO Circuit To PA Driver FL701 TX Out Modulating...
435 – 480 MHz UHF2 Theory of Operation: Keypad 5.4.4 Loop Filter The loop filter contains C751 – C754, and R726 – R728. It reduces the residual side-band noise to get the best signal-to-noise ratio. The output signal from loop filter is applied to VCO. 5.4.5 Dual VCO The dual VCO module contains a RX VCO and a TX VCO.
Chapter 6 UHF2 Troubleshooting Tables Troubleshooting Table for Receiver (UHF2) Table 6-1. Troubleshooting Table for Receiver (UHF2) Symptom Possible Causes Procedure Corrective Action Radio Dead (no 1. Battery dead or Substitute good battery or battery Change or replace battery. turn-on beep, no defective eliminator LED indication)
UHF2 Troubleshooting Tables: Troubleshooting Table for Transmitter (UHF2) Troubleshooting Table for Transmitter (UHF2) Table 6-3. Troubleshooting Table for Transmitter (UHF2) Symptom Possible Causes Procedure Corrective Action No internal Mic 1. Mic dead or defective Verify audio present (~10m Vrms) Replace Mic. audio when speaking into Mic.
UHF2 Troubleshooting Tables: Troubleshooting Table for Board and IC Signals (UHF2) Troubleshooting Table for Board and IC Signals (UHF2) Table 6-4. Troubleshooting Table for Board and IC Signals (UHF2) IC Designator Pin Function DC Voltage (V) Comments (Condition) U201(IF IC) Osc1 44.645 MHz input Osc2...
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UHF2 Troubleshooting Tables: Troubleshooting Table for Board and IC Signals (UHF2) Table 6-4. Troubleshooting Table for Board and IC Signals (UHF2) (Continued) IC Designator Pin Function DC Voltage (V) Comments (Condition) (DTMF decoder) Vref OSC1 3.579545 MHz input High At DTMF detecting ST/GT FL701(VCTCXO) VCON...
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UHF2 Troubleshooting Tables: Troubleshooting Table for Board and IC Signals (UHF2) Table 6-4. Troubleshooting Table for Board and IC Signals (UHF2) (Continued) IC Designator Pin Function DC Voltage (V) Comments (Condition) Q601 Audio_MUTE_CON Mute: Low None Mute: High Mode Mute: High None Mute: Low 1.
(nF), picofarads (pF) or microfarads (µF), and inductance values are in nanohenries (nH) or microhenries (µH). 2. DC voltages are measured from point indicated to chassis ground using a Motorola DC multimeter or equivalent. If the board has been removed from the chassis, the transmitter module mounting screws may be used for ground connection.
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UHF2 Schematic Diagrams, Overlays, and Parts Lists: Introduction 6. Reference Designators are assigned in the following manner: Ref. No. Series Circuit Block Microprocessor & audio control 101 – 199 circuits 1001 – 1099 Microprocessor & audio control circuits 201 – 299 IF IC circuit 301 –...
MIC1 MATES WITH J103 ON RADIO BOARD SPK1 MATES WITH J603 ON RADIO BOARD Figure 7-2. Speaker and Microphone Schematic 7.2.1 Speaker and Microphone Parts List Reference Motorola Part No. Description Designator MIC1 PMDN4139_R Microphone SPK1 Speaker & Cable PMDN4067BR...
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UHF2 Schematic Diagrams, Overlays, and Parts Lists: Speaker and Microphone Schematic Notes...
Chapter 8 136 – 174 MHz VHF Theory of Operation Introduction This chapter provides a detailed theory of operation for the radio components. Schematic diagrams for the circuits described in the following paragraphs are located in Chapter 10 of this manual. VHF Receiver The VHF receiver design covers the frequency range of 136 –...
136 – 174 MHz VHF Theory of Operation: VHF Receiver 8.2.1 Receiver Front End Incoming RF signals from antenna are first routed through the harmonic filter (L409, L410, L411, C426, C427, C428, C429, C445, C446) and antenna switch (CR301), part of the transmitter circuitry, before being applied to the receiver front end.
136 – 174 MHz VHF Theory of Operation: VHF Transmitter VHF Transmitter The VHF transmitter covers the range of 136 – 174 MHz. Depending on model, the output power of the transmitter is switchable on a per-channel basis between high power (5 Watts) and low power (1 Watt).
136 – 174 MHz VHF Theory of Operation: VHF Frequency Generation Circuitry 8.3.4 Auto Power Control The APC keeps the current supply constant to the final amp (Q403). The drain current of Q403 (final amp) is sensed across resistor R417. The voltage difference across R417. The differential signal at the output of U401 (pin 7) is passed to Q404 and Q405 that produces a constant power output to the antenna.
136 – 174 MHz VHF Theory of Operation: VHF Frequency Generation Circuitry 8.4.2 PLL IC Prescaler and Comparator The reference frequency from VCTCXO is divided to 6.25 kHz or 5 kHz by reference counter, R. The RF signal input from the VCO is divided to by prescaler (1/64), divided by N and A counters in PLL IC to determine frequency steps and then supplied to the comparator.
136 – 174 MHz VHF Theory of Operation: Keypad Keypad Left, Right and P1 to P3 keys are directly connected to microprocessor via 22 pin connector. When any of these keys is pressed, the voltage goes "low" and microprocessor detects it. For full keypad models, the number keys are in matrix type which consisted of 3 rows and 4 columns.
Chapter 9 VHF Troubleshooting Tables Troubleshooting Table for Receiver (VHF) Table 9-1. Troubleshooting Table for Receiver (VHF) Symptom Possible Causes Procedure Corrective Action Radio Dead (no 1. Battery dead or Substitute good battery or battery Change or replace battery. turn-on beep, no defective eliminator LED indication)
VHF Troubleshooting Tables: Troubleshooting Table for Transmitter (VHF) Troubleshooting Table for Transmitter (VHF) Table 9-3. Troubleshooting Table for Transmitter (VHF) Symptom Possible Causes Procedure Corrective Action No internal Mic 1. Mic dead or defective Verify audio present (~10mV rms) Replace Mic. audio when speaking into Mic.
VHF Troubleshooting Tables: Troubleshooting Table for Board and IC Signals (VHF) Troubleshooting Table for Board and IC Signals (VHF) Table 9-4. Troubleshooting Table for Board and IC Signals (VHF) IC Designator Pin Function DC Voltage (V) Comments (Condition) U201(IF IC) Osc1 44.645 MHz input Osc2...
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VHF Troubleshooting Tables: Troubleshooting Table for Board and IC Signals (VHF) Table 9-4. Troubleshooting Table for Board and IC Signals (VHF) (Continued) IC Designator Pin Function DC Voltage (V) Comments (Condition) (DTMF decoder) Vref OSC1 3.579545 MHz input High At DTMF detecting ST/GT FL701(VCTCXO) VCON...
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VHF Troubleshooting Tables: Troubleshooting Table for Board and IC Signals (VHF) Table 9-4. Troubleshooting Table for Board and IC Signals (VHF) (Continued) IC Designator Pin Function DC Voltage (V) Comments (Condition) Q601 Audio_MUTE_CON Mute: Low None Mute: High Mode Mute: High None Mute: Low 1.
(nF), picofarads (pF) or microfarads (µF), and inductance values are in nanohenries (nH) or microhenries (µH). 2. DC voltages are measured from point indicated to chassis ground using a Motorola DC multimeter or equivalent. If the board has been removed from the chassis, the transmitter module mounting screws may be used for ground connection.
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10-2 VHF Schematic Diagrams, Overlays, and Parts Lists: Introduction 6. Reference Designators are assigned in the following manner: Ref. No. Series Circuit Block Microprocessor & audio control 101 – 199 circuits 1001 – 1099 Microprocessor & audio control circuits 201 – 299 IF IC circuit 301 –...
MIC1 MATES WITH J103 ON RADIO BOARD SPK1 MATES WITH J603 ON RADIO BOARD Figure 10-2. Speaker and Microphone Schematic 10.2.1 Speaker and Microphone Parts List Reference Motorola Part No. Description Designator MIC1 PMDN4139_R Microphone SPK1 Speaker & Cable PMDN4067BR...
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10-4 VHF Schematic Diagrams, Overlays, and Parts Lists: Speaker and Microphone Schematic Notes...
Circuit Board/Schematic Diagram and Parts List (VHF: 136–174 MHz) 10-43 10.4.2 Parts List (MDC 1200 and QCII) Circuit Supplier Part Circuit Supplier Part Supplier Description Supplier Description Ref. Ref. Circuit Supplier Part Supplier Description C129 E02-0250-0 Chip Cap, 1005 K 473PF C189 E02-0153-0 Chip Cap, 1005 J 220PF...
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10-44 Circuit Board/Schematic Diagram and Parts List (VHF: 136–174 MHz) Circuit Supplier Part Circuit Supplier Part Circuit Supplier Part Supplier Description Supplier Description Supplier Description Ref. Ref. Ref. C319 E02-0049-0 Chip Cap, 1005 K 103PF C381 E02-0057-0 Chip Cap, 1005 K 104PF C447 E02-0013-0 Chip Cap, 1005 C 5PF...
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Circuit Board/Schematic Diagram and Parts List (VHF: 136–174 MHz) 10-45 Circuit Supplier Part Circuit Supplier Part Circuit Supplier Part Supplier Description Supplier Description Supplier Description Ref. Ref. Ref. C528 E02-0134-0 Chip Cap, 1005 K 183PF C609 E02-0057-0 Chip Cap, 1005 K 104PF C728 E02-0029-0 Chip Cap, 1005 D 10PF...
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10-46 Circuit Board/Schematic Diagram and Parts List (VHF: 136–174 MHz) Circuit Supplier Part Circuit Supplier Part Circuit Supplier Part Supplier Description Supplier Description Supplier Description Ref. Ref. Ref. 1, 2 E02-0233-0 Chip Cap, 1005 J 47PF CR301 BGTech E06-0022-0 SWITCH DIODE, KDS-114 J102 BGTech E10-0173-0...
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Circuit Board/Schematic Diagram and Parts List (VHF: 136–174 MHz) 10-47 Circuit Supplier Part Circuit Supplier Part Circuit Supplier Part Supplier Description Supplier Description Supplier Description Ref. Ref. Ref. L332 DELTA 9270820N11820 Chip Ind, 2012 820NH G L707 TAIYOYUDEN E03-0097-0 Chip Ind, 1608 K 1uH Q306 BGTech E05-0084-0...
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10-48 Circuit Board/Schematic Diagram and Parts List (VHF: 136–174 MHz) Circuit Supplier Part Circuit Supplier Part Circuit Supplier Part Supplier Description Supplier Description Supplier Description Ref. Ref. Ref. Q1100 E05-0032-0 KRC 404 BJT NPN Transistor R135 E02-0057-0 Chip Cap, 1005 K 104PF R168 KAMAYA E01-0063-1...
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Circuit Board/Schematic Diagram and Parts List (VHF: 136–174 MHz) 10-49 Circuit Supplier Part Circuit Supplier Part Circuit Supplier Part Supplier Description Supplier Description Supplier Description Ref. Ref. Ref. R207 KAMAYA E01-0056-1 Chip Res, 1005 J 10KΩ R318 KAMAYA E01-0172-1 Chip Res, 1005 J 2.2KΩ R422 VIKING E01-1141-0...
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10-50 Circuit Board/Schematic Diagram and Parts List (VHF: 136–174 MHz) Circuit Supplier Part Circuit Supplier Part Circuit Supplier Part Supplier Description Supplier Description Supplier Description Ref. Ref. Ref. R517 KAMAYA E01-0112-1 Chip Res, 1005 J 15KΩ R619 KAMAYA E01-0056-1 Chip Res, 1005 J 10KΩ R728 KAMAYA E01-0201-0...
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Circuit Board/Schematic Diagram and Parts List (VHF: 136–174 MHz) 10-51 Circuit Supplier Part Circuit Supplier Part Supplier Description Supplier Description Ref. Ref. R1205 KAMAYA E01-0263-1 Chip Res, 1005 J 3.9KΩ U402 BGTech E04-0262-0 MIRCOCHIP, DIGITAL POTENTIOMETER, R1206 KAMAYA E01-0081-0 Chip Res, 1005 J 1.2KΩ MCP4011(502) R1207 KAMAYA...
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10-52 Circuit Board/Schematic Diagram and Parts List (VHF: 136–174 MHz) Notes...
Chapter 11 403 – 447 MHz UHF1 Theory Of Operation 11.1 Introduction This chapter provides a detailed theory of operation for the radio components. Schematic diagrams for the circuits described in the following paragraphs are located in Chapter 14 of this manual. 11.2 UHF1 Receiver The UHF1 receiver design covers the frequency range of 403 –...
11-2 403 – 447 MHz UHF1 Theory Of Operation: UHF1 Receiver 11.2.1 Receiver Front End Incoming RF signals from antenna are first routed through the harmonic filter (L409 – L411, C426 – C429, C445, C446) and antenna switch (CR301), part of the transmitter circuitry, before being applied to the receiver front end.
403 – 447 MHz UHF1 Theory Of Operation: UHF1 Transmitter 11-3 11.3 UHF1 Transmitter The UHF1 transmitter covers the range of 403 – 447MHz. Depending on model, the output power of the transmitter is switchable on a per-channel basis between high power (4 Watt) and low power (1 Watt).
11-4 403 – 447 MHz UHF1 Theory Of Operation: UHF1 Frequency Generation Circuitry 11.3.4 Auto Power Control The APC keeps the current supply constant to the final amp (Q403). The drain current of Q403 (final amp) is sensed across resistor R417. The differential signal at the output of U401 (Pin 7) is passed to Q404 and Q405 that produces a constant power output to the antenna.
403 – 447 MHz UHF1 Theory Of Operation: UHF1 Frequency Generation Circuitry 11-5 11.4.2 PLL IC Prescaler and Comparator The reference frequency from VCTCXO is divided to 6.25kHz or 5kHz by reference counter, R. The RF signal input from the VCO is divided to by prescaler (1/64), divided by N and A counters in PLL IC to determine frequency steps and then supplied to the comparator.
11-6 403 – 447 MHz UHF1 Theory Of Operation: Keypad 11.5 Keypad Left, Right and P1 to P3 keys are directly connected to microprocessor via 22 Pin connector. When any of these keys is pressed, the voltage goes “low” and microprocessor detects it. For full keypad models, the number keys are in matrix type which consisted of 3 rows and 4 columns.
Chapter 12 UHF1 Troubleshooting Tables 12.1 Troubleshooting Table for Receiver (UHF1) Table 12-1. Troubleshooting Table for Receiver (UHF1) Symptom Possible Causes Procedure Corrective Action Radio Dead (no 1. Battery dead or Substitute good battery or battery Change or replace battery. turn–on beep, no defective eliminator...
UHF1 Troubleshooting Tables: Troubleshooting Table for Transmitter (UHF1) 12-3 12.3 Troubleshooting Table for Transmitter (UHF1) Table 12-3. Troubleshooting Table for Transmitter (UHF1) Symptom Possible Causes Procedure Corrective Action No internal Mic 1. Mic dead or defective Verify audio present (~10mV rms) Replace Mic.
12-4 UHF1 Troubleshooting Tables: Troubleshooting Table for Board and IC Signals (UHF1) 12.4 Troubleshooting Table for Board and IC Signals (UHF1) Table 12-4. Troubleshooting Table for Board and IC Signals (UHF1) IC Designator Pin Function DC Voltage (V) Comments (Condition) U201(IF IC) Osc1 44.645 MHz input...
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UHF1 Troubleshooting Tables: Troubleshooting Table for Board and IC Signals (UHF1) 12-5 Table 12-4. Troubleshooting Table for Board and IC Signals (UHF1) (Continued) IC Designator Pin Function DC Voltage (V) Comments (Condition) (DTMF decoder) Vref OSC1 3.579545 MHz input High At DTMF detecting ST/GT FL701(VCTCXO)
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12-6 UHF1 Troubleshooting Tables: Troubleshooting Table for Board and IC Signals (UHF1) Table 12-4. Troubleshooting Table for Board and IC Signals (UHF1) (Continued) IC Designator Pin Function DC Voltage (V) Comments (Condition) Q601 Audio_MUTE_CON Mute: Low None Mute: High Mode Mute: High None Mute: Low 1.
(nF), picofarads (pF) or microfarads (µF), and inductance values are in nanohenries (nH) or microhenries (µH). 2. DC voltages are measured from point indicated to chassis ground using a Motorola DC multimeter or equivalent. If the board has been removed from the chassis, the transmitter module mounting screws may be used for ground connection.
13-2 UHF1 Schematic Diagrams, Overlays, and Parts Lists: Introduction 6. Reference Designators are assigned in the following manner: Ref. No. Series Circuit Block Microprocessor & audio control 101 – 199 circuits 1001 – 1099 Microprocessor & audio control circuits 201 – 299 IF IC circuit 301 –...
MIC1 MATES WITH J103 ON RADIO BOARD SPK1 MATES WITH J603 ON RADIO BOARD Figure 13-2. Speaker and Microphone Schematic 13.2.1 Speaker and Microphone Parts List Reference Motorola Part No. Description Designator MIC1 PMDN4139_R Microphone SPK1 Speaker & Cable PMDN4067BR...
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13-4 UHF1 Schematic Diagrams, Overlays, and Parts Lists: Speaker and Microphone Schematic Notes...
Circuit Board/Schematic Diagram and Parts List (UHF1: 403–447 MHz) 13-5 13.3 Circuit Board/Schematic Diagram and Parts List (UHF1: 403–447 MHz) Figure 13-3. UHF1 (403–447 MHz) Receiver Schematic Diagram(Part No: E11-0763-0)
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13-28 Circuit Board/Schematic Diagram and Parts List (UHF1: 403–447 MHz) Circuit Supplier Part Supplier Description Ref. BGTech E11-000886-00 Key PCB, 1.2T 2Layer PCB1 Note: 1. Not for PMUE3323AAE & PMUE3327AAE Model 2. For PMUE3326AAE & PMUE3327AAE Model 3. For PMUE3322AAE & PMUE3323AAE Model 4.
Circuit Board/Schematic Diagram and Parts List (UHF1: 403–447 MHz) 13-43 13.4.2 Parts List (MDC 1200 and QCII) Circuit Supplier Part Circuit Supplier Part Supplier Description Supplier Description Ref. Ref. Circuit Supplier Part Supplier Description C136 E02-0056-0 Chip Cap, 1005 Z 104PF C208 E02-0056-0 Chip Cap, 1005 Z 104PF...
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13-44 Circuit Board/Schematic Diagram and Parts List (UHF1: 403–447 MHz) Circuit Supplier Part Circuit Supplier Part Circuit Supplier Part Supplier Description Supplier Description Supplier Description Ref. Ref. Ref. C355 E02-0029-0 Chip Cap, 1005 D 10PF C416 E02-0023-0 Chip Cap, 1608 D 8PF C465 E02-0243-0 Chip Cap, 1005 K 470PF...
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Circuit Board/Schematic Diagram and Parts List (UHF1: 403–447 MHz) 13-45 Circuit Supplier Part Circuit Supplier Part Circuit Supplier Part Supplier Description Supplier Description Supplier Description Ref. Ref. Ref. C529 E02-0056-0 Chip Cap, 1005 Z 104PF C577 E02-0233-0 Chip Cap, 1005 J 47PF C712 E02-0243-0 Chip Cap, 1005 K 470PF...
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13-46 Circuit Board/Schematic Diagram and Parts List (UHF1: 403–447 MHz) Circuit Supplier Part Circuit Supplier Part Circuit Supplier Part Supplier Description Supplier Description Supplier Description Ref. Ref. Ref. C756 E02-0040-0 Chip Cap, 1005 K 1000PF C1030 E02-0233-0 Chip Cap, 1005 J 47PF BGTech E17-0004-0 TOKO, Ceramic Filter,...
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Circuit Board/Schematic Diagram and Parts List (UHF1: 403–447 MHz) 13-47 Circuit Supplier Part Circuit Supplier Part Circuit Supplier Part Supplier Description Supplier Description Supplier Description Ref. Ref. Ref. CR401 M/A COM E06-0025-0 PIN DIODE, MA4P7001F- J602 BGTech E10-0081-0 SUYIN, BATTERY L602 TAIYOYUDEN E03-0116-0...
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13-48 Circuit Board/Schematic Diagram and Parts List (UHF1: 403–447 MHz) Circuit Supplier Part Circuit Supplier Part Circuit Supplier Part Supplier Description Supplier Description Supplier Description Ref. Ref. Ref. Q113 E05-0032-0 KRC 404 BJT NPN Q407 E05-0028-0 KRA 305 BJT PNP Q711 E05-0027-0 KRA 304 BJT PNP...
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Circuit Board/Schematic Diagram and Parts List (UHF1: 403–447 MHz) 13-49 Circuit Supplier Part Circuit Supplier Part Circuit Supplier Part Supplier Description Supplier Description Supplier Description Ref. Ref. Ref. R132 KAMAYA E01-0047-0 Chip Res, 1005 J 1KΩ R163 KAMAYA E01-0063-1 Chip Res, 1005 J 100KΩ R203 KAMAYA E01-0178-0...
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13-50 Circuit Board/Schematic Diagram and Parts List (UHF1: 403–447 MHz) Circuit Supplier Part Circuit Supplier Part Circuit Supplier Part Supplier Description Supplier Description Supplier Description Ref. Ref. Ref. R320 KAMAYA E01-0133-1 Chip Res, 1005 J 180Ω R423 KAMAYA E01-0301-0 Chip Res, 1005 J 4.7MΩ R518 KAMAYA E01-0289-1...
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Circuit Board/Schematic Diagram and Parts List (UHF1: 403–447 MHz) 13-51 Circuit Supplier Part Circuit Supplier Part Circuit Supplier Part Supplier Description Supplier Description Supplier Description Ref. Ref. Ref. R623 KAMAYA E01-0317-0 Chip Res, 1005 J 560Ω R732 KAMAYA E01-0056-1 Chip Res, 1005 J 10KΩ R1208 KAMAYA E01-0298-0...
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13-52 Circuit Board/Schematic Diagram and Parts List (UHF1: 403–447 MHz) Circuit Supplier Part Supplier Description Ref. U502 E04-0185-0 JRC, OP AMP, NJM324 U505 BGTech E04-0150-0 TOKO, REGULATOR IC, TK11250AMTL U506 BGTech E04-0588-0 TOKO, REGULATOR IC, TK11233AMTL U507 BGTech E04-0207-0 MICRO CHIP, VOLTAGE DOUBLER, TC1240 U508 BGTech...
In instances where the product is covered under a “return for replacement” or “return for repair” warranty, a check of the product should be performed prior to shipping the unit back to Motorola. This is to ensure that the product has been correctly programmed or has not been subjected to damage outside the terms of the warranty.
Warranty, Service Support, and Replacement Parts: Warranty A.2.3 European Radio Support Centre (ERSC) The ERSC Customer Information Desk is available through the following service numbers: Austria: 08 00 29 75 41 Italy: 80 08 77 387 Belgium: 08 00 72 471 Luxemburg: 08 00 23 27 Denmark:...
Solutions Organization (RPSO). If no part number is assigned, the part is not normally available from Motorola. If the part number is appended with an asterisk, the part is serviceable by Motorola Depot only. If a parts list is not included, this generally means that no user-serviceable parts are available for that kit or assembly.
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Warranty, Service Support, and Replacement Parts: Further Assistance From Motorola Notes...
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Micro Controller Unit MRTI Motorola Radio-Telephone Interconnect: a system that provides a repeater connection to the Public Switched Telephone Network (PSTN). The MRTI allows the radio to access the telephone network when the proper access code is received.
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Glossary of Terms Term Definition ® Private-Line tone squelch: a continuous sub-audible tone that is transmitted along with the carrier. Phase-Locked Loop: a circuit in which an oscillator is kept in phase with a reference, usually after passing through a frequency divider. Push-To-Talk: the switch located on the left side of the radio;...