Related Manuals for Motorola GTX 2000
Summary of Contents for Motorola GTX 2000
- Page 1 GTX/GTX LTR/ LTS 2000™ Portable Radios Service Manual *6802945C75-A* Motorola Inc. 8000 West Sunrise Boulevard Fort Lauderdale, Florida 33322-9934 68P02945C75-A...
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Page 2: Safe And Efficient Operation Of Two-Way Radios
National and International Standards and Guidelines Your Motorola two-way Radio, which generates and radiates radio frequency (RF) electromagnetic energy (EME) is designed to comply with the following national and international standards and guidelines regarding exposure of human beings to radio frequency electromagnetic energy: •... - Page 3 If you do not know a part number, include with your order the number of the chassis or kit which contains the part, and a detailed description of the desired component. If a Motorola part number is identified on a parts list, you should be able to order the part through Motorola Parts.
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Page 4: Table Of Contents
Front Housing Reassembly Ñ Basic Model ........................ 1-4 Chassis Reassembly ................................ 1-4 Radio Reassembly ................................1-5 Section 2 Theory of Operation Overview ....................................2-1 Receiver....................................2-1 Intermediate Frequency (IF) ............................2-1 Transmitter....................................2-1 Frequency Generation Unit ..............................2-4 ©Motorola Inc., 1998 All Rights Reserved 68P02945C75-A... - Page 5 Table of Contents GTX/GTX LTR /LTS 2000 Portable Radios Service Manual Controller....................................2-5 Functions..................................2-5 Normal Operation ................................2-5 Clock Synthesizer ................................2-5 Bus Operation.................................. 2-5 RAM ....................................2-5 EEPROM ..................................2-5 SPI Interface..................................2-6 LED Control..................................2-6 Audio & Data Circuitry ..............................2-6 External PTT Sense Circuits ............................
- Page 6 GTX/GTX LTR /LTS 2000 Portable Radios Service Manual Preventive Maintenance................................ 6-1 Inspection ..................................6-1 Cleaning.................................... 6-1 Safe Handling of CMOS Devices ............................6-1 Repair Procedures and Techniques ............................. 6-2 General....................................6-2 Over-Molded Pad-Array Carrier (OMPAC) ....................... 6-3 Section 7 Radio Tuning Procedure Radio Tuning Procedure ...............................
- Page 7 Parts Lists for FSN5509A Speaker & Microphone Assembly ............8-18 Parts Lists for NAF5037A Antenna....................8-18 , Motorola, Private-Line, and Digital Private-Line are trademarks of Motorola, Inc. IBM is a registered trademark, and PC DOS, PC XT/AT/Convertible and PS/2 Model 30/50/70 are trademarks of International Business Machine Corporation.
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Page 8: Gtx/Gtx Ltr Portable Radio Model Chart
GTX/GTX LTR /LTS 2000 Portable Radios Service Manual Foreword GTX/GTX LTR Portable Radio Model Chart GTX/GTX LTR Portable Radio Model Chart GTX 800MHz Portable Radio Model Chart Model Description H11UCC6DB1_N GTX Basic Radio, 800MHz, Privacy Plus H11UCC6DU1_N GTX Basic Radio, 800MHz, LTR H11UCD6CB1_N GTX Keypad Radio, 800MHz, Privacy Plus H11UCD6CU1_N... -
Page 9: Lts 2000/Lts 2000 Smartzone And Smartnet Plus Portable Radios Model Chart
Foreword GTX/GTX LTR /LTS 2000 Portable Radios Service Manual LTS 2000/SmartZone and SmartNet Plus Portable Radios Model Chart LTS 2000/SmartZone and SmartNet Plus Portable Radios Model Chart Model Description H10UCH6DC5AN LTS 2000 Portable Radio (For Existing Users Only) H10UCH6DC5BN LTS 2000 Portable Radio Q38 (SmartZoneª) H10UCH6DC5BN LTS 2000 Portable Radio Q37 (SMARTNET Plusª) Item... -
Page 10: Gtx/Gtx Ltr/Lts 2000 Options
GTX/GTX LTR /LTS 2000 Portable Radios Service Manual GTX/GTX LTR/LTS 2000 Options GTX/GTX LTR/LTS 2000 Options GTX/GTX LTR/LTS 2000 Options Option Description Factory Mutual (FM) Batteries H236 Fully Approved Factory Mutual Intrinsically Safe Radio (includes FA 1200 mAH battery) Factory Mutual Intrinsically Safe Radio (includes 600 mAH battery) H224 600 mAH Slim Battery (deletes standard battery) Antenna... -
Page 11: Gtx/Gtx Ltr/Lts 2000 Accessories
Foreword GTX/GTX LTR /LTS 2000 Portable Radios Service Manual GTX/GTX LTR/LTS 2000 Accessories GTX/GTX LTR/LTS 2000 Accessories GTX/GTX LTR/LTS 2000 Accessories Accessory Description Charger Pick-ups HTN9803 Single Unit, Rapid Charger, UK Plug, 240 V HTN9702 Single Unit Standard Charger, 110 V HTN9042 Single Unit, Rapid Charger, 110 V HTN9812... - Page 12 GTX/GTX LTR /LTS 2000 Portable Radios Service Manual Foreword GTX/GTX LTR/LTS 2000 Accessories GTX/GTX LTR/LTS 2000 Accessories (cont.) Documentation Kits 68P02946C80 GTX Portable Radio UserÕs Guide 68P02948C65 GTX LTR Portable Radio UserÕs Guide 68P02945C75 GTX/GTX LTR/LTS 2000 Portable Radios Service Manual 68P02945C85 LTS 2000 Portable Radio UserÕs Guide Radio Service Software (RSS)*...
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Page 13: Performance Specifications
Foreword GTX/GTX LTR /LTS 2000 Portable Radios Service Manual Performance Specifications Performance Specifications GENERAL RECEIVER TRANSMITTER FCC Designation: Frequency Range: 851-870 MHz RF Power: GTX /GTX LTR AZ489FT5776 LTS 2000: AZ489FT5777 Power Supply: NiCad Battery Bandwidth 19 MHz Frequency range: 806-825 MHz 851-870 MHz 0.35 µ... -
Page 14: Service Aids
GTX/GTX LTR /LTS 2000 Portable Radios Service Manual Foreword Service Aids Service Aids The following table lists service aids recommended for working on the GTX/GTX LTR/LTS 2000. MOTOROLA NO. DESCRIPTION APPLICATION RLN4008 Radio Interface Box Enables communication between the radio and the computerÕs serial communications adapter. -
Page 15: Service Tools
The following table lists the tools recommended for working on this family of radios; these tools are also available from Motorola. Note that the R-1070A workstation requires the use of a specific Òheat focus headÓ for each of the components on which this item is used. Each of these heat focus heads must be ordered separately. The individual heat focus heads (and the components on which they are used) are listed at the end of the table. -
Page 16: Test Set Service Cable
GTX/GTX LTR /LTS 2000 Portable Radios Service Manual Foreword Service Tools HEAT-FOCUS INSIDE DIMENSIONS USED ON MAXIMUM PRESCRIBED HEADS OF HEADS HEAT SETTING 6680334B52 0.572" x 0.572" U701 Refer to Maintenance Section of Manual for prescribed heat setting. 6680371B15 0.460" x 0.560" VCO shield SH260 Test Set Service Cable 3.5 mm plug... -
Page 17: Radio Model Numbering System
Radio Model Numbering System The model number, serial number, and Motorola FCC designation number are all on a label attached to the back of your radio. All GTX/GTX LTR/LTS 2000 radio models are synthesized, 8-channel units that come standard with Tone Private-Line (TPL)/ Digital Private-Line (DPL) coded squelch or carrier squelch, which may be enabled/disabled on a per channel basis. -
Page 18: Radio Service Software Information
GTX/GTX LTR /LTS 2000 Portable Radios Service Manual Foreword Radio Service Software Information Radio Service Software Information To run the Radio Service Software, you will need the following equipment: Required Equipment: 1. IBM XT, AT, Convertible, or System/2 Model 30/50 with 512K RAM, Dual Floppy Disk Drives or one Floppy Disk and one Hard Disk. -
Page 19: Notes
Foreword GTX/GTX LTR /LTS 2000 Portable Radios Service Manual Notes: Notes: 68P02945C75-A June 1999... -
Page 20: Important Safety Information: Intrinsically Safe Radios
Do not disassemble the FMRC Approved Product unit in any way that exposes the internal electrical circuits of the unit. Radios must ship from the Motorola manufacturing facility with the hazardous atmosphere capability and FM Approval label- ing. Radios will not be “upgraded” to this capability and labeled in the field. -
Page 21: Repair Of Fmrc Approved Products
REPAIRS FOR MOTOROLA FMRC APPROVED PRODUCTS ARE THE RESPONSIBILITY OF THE USER. You should not repair or relabel any Motorola manufactured communication equipment bearing the FMRC Approval label (“FMRC Approved Product”) unless you are familiar with the current FMRC Approval Standard for repair service (“Class Num- ber 3605”). -
Page 22: Relabeling
Do Not Substitute Options or Accessories The communications equipment package that Motorola submits to FMRC for testing and approval is tested as a system that consists of the communications unit itself and the battery, antenna and other options or accessories that make up the rest of the package to be approved. - Page 23 Foreword GTX/GTX LTR/LTS 2000 Portable Radios Service Manual This page intentionally left blank 68P02945C75-A June 1999...
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Page 24: Radio Disassembly/Assembly Overview
Section 1 Radio Disassembly/Assembly Overview Radio Disassembly This section explains, step by step, how to disassemble Battery Removal and reassemble the GTX /GTX LTR/LTS 2000 radio. 1. The battery latch is located at the bottom of the radio (Figure 1-1). Press and hold the battery Safety Information latch towards the front of the radio. -
Page 25: Main Board Removal
Radio Disassembly/Assembly GTX/GTX LTR/LTS 2000 Portable Radios Service Manual Radio Disassembly Unscrew the antenna counter-clockwise until 6. Pull the chassis out and away from the it is detached from the radio. housing as shown by the arrow (Figure 1-4) and beware of the front cover ßexible circuit. Carefully pry the chassis up on both sides, near the bottom, with a ßat blade screwdriver 7. -
Page 26: Front Housing Board Removal
GTX/GTX LTR/LTS 2000 Portable Radios Service Manual Radio Disassembly/Assembly Radio Reassembly Chassis Gasket Main board Figure 1-8. Remove Front Housing Shield Locking clips Separate the front housing board from the front housing. Shield Figure 1-6. Separate Main Board From Chassis Radio Reassembly Separate the ßexible circuit tail by undoing the ZIF connector latch (Figure 1-7). -
Page 27: Front Housing Reassembly Ñ Basic Model
Radio Disassembly/Assembly GTX/GTX LTR/LTS 2000 Portable Radios Service Manual Radio Reassembly Fold the LCD ßexible circuit (Figure 1-11). Make sure the LCD ßexible circuit is outside. Place the front housing shield into the front housing using the four slots on the front housing wall as the guide (Figure 1-10). -
Page 28: Radio Reassembly
GTX/GTX LTR/LTS 2000 Portable Radios Service Manual Radio Disassembly/Assembly Radio Reassembly Figure 1-14. Replace Gasket Place the chassis assembly and front housing assembly on a ßat surface with the top face of housing in a reverse and opposite direction (Figure 1-15). Figure 1-12. - Page 29 Radio Disassembly/Assembly GTX/GTX LTR/LTS 2000 Portable Radios Service Manual Radio Reassembly NOTE The gasket helps keep the radio free from unwanted dirt, dust, and water. We rec- ommend using a new lubricated gasket (part no. 3280545C01) when reassem- bling the radio. Using an old gasket could impair the overall seal quality of the radio.
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Page 30: Theory Of Operation
The output of the mixing of the IF signal and the sec- ond LO produces a signal at 455 KHz (second IF). This The RF ampliÞer, Q1, is a Motorola MRF9411 NPN signal is then Þltered by external ceramic Þlters and device biased in a common emitter conÞguration. - Page 31 Theory of Operation GTX/GTX LTR/LTS 2000 Portable Radios Service Manual Transmitter RF & AUDIO SECTION VOLUME 45.1 MHz 851-870 MHz CONTROL 2ND MIXER & DET_AUDIO FRONT-END 1ST MIXER ROTARY MODULE DEMODULATOR ROT1 SWITCH & LEVEL ROT2 ENCODER 805.9-825 MHz 28-PIN LOCK_DET RX_INJ SYNTHESIZER...
- Page 32 GTX/GTX LTR/LTS 2000 Portable Radios Service Manual Transmitter Ò5RÓ (5 V) MIXER RX IN BANDPASS BANDPASS FILTER FILTER LO +3 dBm DETECTED AUDIO IF IC CRYSTAL CRYSTAL FILTER FILTER RECEIVER BLOCK DIAGRAM TXB+ RX IN 0 dBm POWER ANTENNA HARMONIC ANTENNA FROM COUPLER...
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Page 33: Frequency Generation Unit
Theory of Operation GTX/GTX LTR/LTS 2000 Portable Radios Service Manual Frequency Generation Unit The antenna switch circuit consists of two PIN diodes The voltage at the second input of the summing amp is (CR161 and CR162), a pi network (C126, L161, and part supplied by DAC U400-P9. -
Page 34: Controller
The GTX/GTX LTR/LTS 2000 controller is an open Bus Operation architecture which consists of: The microprocessor operates in expanded memory ¥ U709, Motorola 68HC11K1 microprocessor mode and executes Þrmware contained in OTP/ ¥ U701, Audio Signalling Filter Integrated Circuit, FLASH ROM, U705. The microprocessor uses a non-... -
Page 35: Spi Interface
LED outputs on simultaneously, in nication in trunked and conventional systems, and which case the LED emits a yellow/orange light. MDC data for use in Motorola proprietary MDC sys- tems. The deviation levels of the latter three types are Audio & Data Circuitry tuned by a 5-bit digital attenuation inside the ASFIC. -
Page 36: Sub-Audible Data (Pl/Dpl)
GTX/GTX LTR/LTS 2000 Portable Radios Service Manual Controller Sub-Audible Data (PL/DPL) (with the amplitude of the high-group tone being approximately 2dB greater than that of the low-group Sub-audible data is composed of low-frequency PL tone) and then pre-emphasized before being routed to and DPL waveforms for conventional operation and the summer and splatter Þlter. -
Page 37: Audio Power Amplifier
Theory of Operation GTX/GTX LTR/LTS 2000 Portable Radios Service Manual Controller routed to the Audio power ampliÞer circuit in the nal to a comparator, which outputs a logic zero or one transceiver board. signal. The detected audio from the transceiver board is routed to U701-H6 and J7 through coupling cap C435. -
Page 38: Accessory
Section 3 Accessory Overview The remote speaker microphone is an accessory avail- able with the GTX/GTX LTR/LTS 2000 portable radios. This section provides a general description of the remote speaker microphone and describes the operation, handling precautions, and maintenance of this accessory. -
Page 39: Maintenance
¥ When soldering, be sure the soldering iron is Electrical Parts List grounded HMN9030 Electrical Parts List ¥ Prior to replacing circuit components or touch- REFERENCE MOTOROLA ing the microphone cartridge, be sure to dis- SYMBOL PART NO. DESCRIPTION capacitor, Þxed: µ F ± 10%; 100 V un- charge any static buildup. - Page 40 GTX/GTX LTR/LTS 2000 Portable Radios Service Manual Accessory Maintenance Mechanical Parts List HMN9030 Remote Speaker Microphone REFERENCE MOTOROLA SYMBOL PART NO. DESCRIPTION 1580617U01 HOUSING, front 3580619U01 BAFFLE, felt 0180709Y90 ASSY, microphone, speaker, & PCB 7580418D04 BUSHING, retainer 3280621U01 GASKET 1580618U01...
- Page 41 Accessory GTX/GTX LTR/LTS 2000 Portable Radios Service Manual This page intentionally left blank 68P02945C75-A June 1999...
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Page 42: Troubleshooting
Section 4 Troubleshooting Overview This section contains three troubleshooting tables for the following GTX/ GTX LTR/LTS 2000 components: ¥ Receiver ¥ Transmitter ¥ Synthesizer ¥ Controller Troubleshooting Charts Refer to following pages. June 1999 68P02945C75-A... -
Page 43: Troubleshooting Flow Chart For Receiver
Troubleshooting GTX/GTX LTR/LTS 2000 Portable Radios Service Ma nual Troubleshooting Charts Start Very low or no 12 Check IFIC dB SINAD Are VDC of U51 (see pins 7,9, and Is 2nd LO on below) 10 of IFIC freq? Noise at spkr Noise at pin 23 when radio is Check VDC of... -
Page 44: Troubleshooting Flow Chart For Transmitter
GTX/GTX LTR/LTS 2000 Portable Radios Service Ma nual Troubleshooting Troubleshooting Charts Start power Inspect: Is the 1) Front cover ßexible circuit LEDÕs red light 2)Voltage regulator on or not? Is Tx B+ Is biasing of Replace Q400 OK? Q400 Troubleshoot Is control current Power Control... -
Page 45: Troubleshooting Flow Chart For Synthesizer
Troubleshooting GTX/GTX LTR/LTS 2000 Portable Radios Service Ma nual Troubleshooting Charts Start Visual Correct check of the problem board OK? Check 5V Regulator Is U220 pin 32 AT = 13 VDC +5V at U220 pins Is 16.8MHz Check 12,22,23 signal at Check C223-C230, U210, &... -
Page 46: Troubleshooting Flow Chart For Controller
GTX/GTX LTR/LTS 2000 Portable Radios Service Ma nual Troubleshooting Troubleshooting Charts Start Apply power to radio and turn on. Are alert tones No/DonÕt Was good or bad power-on enabled with RSS? know beep present? Use RSS to enable tones Reprogram radio with Was good power-on beep RSS . - Page 47 Troubleshooting GTX/GTX LTR/LTS 2000 Portable Radios Service Ma nual This page intentionally left blank 68P02945C75-A June 1999...
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Page 48: Radio Diagnostic Utilities
Section 5 Radio Diagnostic Utilities Test Mode/Entry NOTE You may use the programming cable bat- Test Mode allows radio checks to be performed in the tery as external power supply for the Þeld. To provide a level of protection to the Test Mode radio. -
Page 49: Test Mode/Tx Modulation
Radio Diagnostic Utilities GTX/GTX LTR/LTS 2000 Portable Radios Service Manual Test Mode/Tx Modulation Test Mode/Tx Modulation Use PTT switch for modulation type selection. A con- tinuous press will advance the radio to the next modu- lation test (cyclic scroll) and perform Tx test till PTT is released. -
Page 50: Performance Checks
GTX/GTX LTR/LTS 2000 Portable Radios Service Manual Performance Checks Performance Checks Table 5-4 Transmitter Performance Checks TEST COMMUNICATION RADIO TEST SET COMMENTS NAME ANALYZER Reference Mode: PWR MON TEST MODE, PTT to continuous Frequency error to be Frequency 2nd channel test frequency Monitor. Display: 2 0 (during the <... - Page 51 Radio Diagnostic Utilities GTX/GTX LTR/LTS 2000 Portable Radios Service Manual Performance Checks Table 5-5. Receiver Performance Checks TEST COMMUNICATION RADIO TEST SET COMMENTS NAME ANALYZER Mode: GEN TEST MODE, PTT to OFF (center), Set volume Rated Audio Channel 0 Output level: 1.0mV RF meter to Audio PA control to Modulation Type 1...
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Page 52: Maintenance
Section 6 Maintenance Introduction CAUTION The effects of certain chemicals and their vapors have harmful results on This section of the manual describes preventive certain plastics. Aerosol sprays, tuner cleaners, and other chemicals should be maintenance, safe handling of CMOS devices, and avoided. -
Page 53: Repair Procedures And Techniques
If the identical replacement component is not locally available, check the parts list NOTE for the proper Motorola part number and order the The radio will display ÒERROR 06Ó with c o m p o n e n t... -
Page 54: Over-Molded Pad-Array Carrier (Ompac)
(in a Òdry boxÓ as supplied by the the ßux is applied, place the OMPAC on the Motorola Parts Department prior to use. circuit board, making certain that it is oriented I f t h e O M PA C i s a m b i e n t f o r a n unknown amount of time or for more correctly on the board. - Page 55 Maintenance GTX/GTX LTR/LTS 2000 Portable Radios Service Manual Repair Procedures and Techniques vacuum tip and attach it to the shield by turn- remove excess solder from the solder pads on ing on the vacuum pump. Lower the focus the circuit board. Place the circuit board back head until it is approximately 1/8"(0.3cm) in the R-1319A's circuit board holder.
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Page 56: Radio Tuning Procedure
Section 7 Radio Tuning Procedure Radio Tuning Procedure CAUTION Do NOT switch radios in the middle of any SERVICE procedure. Always use General the EXIT key to return to the MAIN menu screen before disconnecting the An IBM PC (personal computer) and RSS (Radio radio. -
Page 57: Tuning Procedure
Radio Tuning Procedure GTX/GTX LTR/LTS 2000 Portable Radios Service Manual Tuning Procedure keyboard UP/DOWN arrow keys respectively. A 2. Press F5 to select the REFERENCE OSCILLA- TOR softpot. graphical scale is displayed indicating the minimum, maximum, and proposed value of the softpot, as 3. -
Page 58: Rssi (Received Signal Strength Indicator)
GTX/GTX LTR/LTS 2000 Portable Radios Service Manual Radio Tuning Procedure Tuning Procedure Adjust the UP/DOWN arrow key to the mini- sensitivity of the VCO and reference modulation mum squelch value. (synthesizer low frequency port) lines. Compensation algorithm is critical to the operation of signaling Set the RF test generator to the test frequency schemes that have very low frequency components plus +500 Hz offset. - Page 59 Radio Tuning Procedure GTX/GTX LTR/LTS 2000 Portable Radios Service Manual This page intentionally left blank 68P02945C75-A June 1999...