Motorola MTS 2000 Service Manual

Text of Motorola MTS 2000 User Guide:

• Motorola MTS 2000, Test Mode and Error Codes 4-1 4 Test Mode and Error Codes 4 Front Panel Test Mode The functions of the radio controls for the Front Panel Test Mode are as follows: Test Mode/Entry Test Mode allows radio checks to be performed in the field. To provide a level of protection to the Test Mode entry, proceed according to the following sequence: 1. Place radio in TRUNKING operation mode and wait for 6 seconds. (See Quick Start card for instructions on how to enter that mode.) 2. Turn radio off. 3. Verify that RIB is off.

• Motorola MTS 2000, Theory of Operation 7-11 SPI BUS is also used for the control head. U0106 buffers the SPI TRANSMIT DATA and CLK lines to the control head. U0106 serves also to switch off the CLK signal for the LCD display while it is not selected via LCD CE signal. When the µP needs to program any of these ICs, it drops down the chip select line of the specific IC to a logic 0 and then sends the proper data and clock signals. The data sent to the various ICs are different. For example the ASFIC receives 21 bytes (168 bits) while the DAC needs 3 bytes (24 bits). After the data has been sent the chip select line is returned to a logic 1. SBEP Serial Interface The SBEP seria

• 4-2 Test Mode and Error Codes Test Mode/Tx Modulation Use PTT switch for modulation type selection. A continuous press will advance the radio to the next modulation test (cyclic scroll ) and perform Tx test until PTT is released. The modulation selection is described in the table below. Table 4-2 Test Mode/Tx Modulation (1). C stands for the selected channel (1-7). See Table 4-1. Fail Mode The

• Motorola MTS 2000, 7-12 Theory of Operation On the K1µP the lines XIRQ (U0101-30), MODA LIR (U0101-77), MODB VSTPY (U0101-76) and RESET (U0101-75) should be logic high during all normal K1µP operation. Whenever a data or an address line becomes unloaded or shorted to an adjacent line, a common symptom is that short negative pulses occur on the RESET line, with a period of 20 msec. When two lines are short-circuited, mid logic level (around 2.5 V) may be observed, while these lines are opposite driven by two different ICs. The MODA LIR (U0101-77) and MODB VSTPY (U0101-76) inputs

• Theory of Operation 7-13 access signals (SI, SO and SCK) are generated by the K1µP and chip select (CS) is generated by address decoder U0105. Additional EEPROM is contained in the K1µP (U0101). This EEPROM is used to store radio tuning and alignment data. Like the external EEPROM this memory can be programmed multiple times and will retain the data when power is removed from the ra

• Motorola MTS 2000, 6-2 Radio Tuning Procedure Figure 6-7 Service Menu Structure All SERVICE screens read and program the radio codeplug directly; you do NOT have to use the RSS GET/SAVE functions to program new tuning values. The SERVICE screens use the concept of the “Softpot”, an analog SOFTware controlled POTentiometer used for adjusting all transceiver alignment controls. Each SERVICE screen provides the capability to increase or decrease the ‘softpot’ value with the keyboard UP/DOWN arrow keys respectively. A graphical scale is displayed indicating the minimum,

• Motorola MTS 2000, June 1996 68P02945C70-O 13 Schematic Diagram for FLN8530A Control Head PB0915 65 43 21 GOLD_SW_6P 14V TOUCH_SW PB0913 KEY ANALOG_2 ANALOG_3 ANALOG_1 R970 2.2k R982 47k 200k R973 200k R971 1k R0902 FLT_A+ 14V VR0993 3 2 MMBZ5244L MMBD6100L CR925 1 Q0941 DTC144EK 2 GND 1 IN 3 OUT GOLD_SW_6P 12 VR0903 LCD_CE PB0914 TOUCH_SW KEY 4.7k 34 56 11 4 R0922 15 BUS+ FLT_A+ 2 PTT +5V 10 470pF NU C0925 C0915 470pF NU INT_SPKR+ 18 POT_SWITCH 4 5 2 1 3 R955 4.7k U942 DTC144EK Q0925 GND 2 IN 1 OUT 3 24k R957 GOLD_SW_6P 1 R956 47k KEY TOUCH_SW KEY 2 34 56 P

• Motorola MTS 2000, Theory of Operation 7-19 ACT. The state of CH ACT and SQ DET is high (logic 1) when carrier is detected, otherwise low (logic 0). CH ACT is routed to the µP pin 25 while SQ DET adds up with LOCK DET, weighted by resistors R0113, R0114, and is routed to one of the µP´s ADC input U0101-43. From the voltage weighted by the resistors the µP determines whether SQ DET, LOCK DET or both are active. SQ DET is used to determine all audio mute / unmute decisions except for Conventional Scan. In this case CH ACT is a pre-indicator as it occurs sli

• Theory of Operation 7-21 Receive Signalling Circuits Refer to the following sections. Figure 7-6 Receive Signalling Path. Sub-audible Data (PL/DPL) and High Speed Data Decoder The ASFIC (U0201) is used to filter and limit all received data. The data enters the ASFIC at U0201-J7. Inside U0201 the data is filtered according to data type (HS or LS), then it is limited to a 0-5V digi

• Motorola MTS 2000, Radio Tuning Procedure 6-1 6 Radio Tuning Procedure 6 Radio Tuning Procedure General An IBM PC (personal computer) and RSS (Radio Service Software) are required to align the radio. Refer to the applicable RSS Manual for installation and setup procedures for the software. To perform the alignment procedures, the radio must be connected to the PC, RIB (Radio Interface Box), and Test Set as shown in Figure 6-6. Figure 6-6 Radio Alignment Test Setup BNC RIB RIB POWER SUPPLY COMPUTER INTERFACE CABLE DATA GND COMPUTER AUDIO GENERATOR SINAD METER AC VOLTMETER TX RX 30 dB PAD 30 dB PAD RF GENERATOR SERVICE MONITOR WATTMETER TRA

• Motorola MTS 2000, 8-6 Troubleshooting Troubleshooting Flow Chart f or Power Amplifier START No No No No No No Yes Yes Yes Yes Yes Yes Is PA control Is Red light on? Is control head Is K9.1 OK? Go to Go to Go to controller Is there Faulty power setting DAC Faulty coupler. Is Check R6519, U0701, Is Faulty current sense Is Faulty integrator. Faulty REF voltage. Is Is RF at Are voltages Is RF Is RF after Is RF after Replace Antenna Check CR6501, Q6506, Check U6502, R6520, Replace U6501. Check CR6502, CR6503, Check L6513, L6513, Is there 5V at Go to synthes

• Motorola MTS 2000, June 1996 68P02945C70-O 5 Schematic Diagram for FLF5582A Main Board, Power Amplifier Section, Power Control Sub-section R0704 DAC_CE_7 PA_CNTRL 10k A+_CURRENT_SENSE+ CURRENT_SENSE_ TEMP ANA_FREQ_CONT SPI_CLCK_SRC K9.1 R0734 C0701 MC3303 IF3_8 IF_IN1 22k C0712 IF_IN1 IF3_5 R0702 22nF 2.2k C0727 C0711 0.1uF PA_PWR_SET 9V3 PA_ENABLE SPI_DATA_SRC SW_B+ VAG K9.1_ENABLE 9V3 VAG 9V3 9V3 PA_TEMP VFORWARD 3.3k R0705 R0722 22k R0711 IF3_3 IF_IN1 IF3_7 IF_IN1 22k IF_SS1 IF7_4 IF_IN1 IF3_1 4.7k R0735 IF_IN1 IF2_2 IF_IN2 IF2_1 C0713 39pF C0702 U0701 39pF 39pF 4.7k R0716 10.0k 4.7k R0733 C0714P R0720 10.0k 1k 39pF 4.7k R0715 100 R0714 R0732 U0702 CLOCK 10 DIN 1 DOUT 15 ENABLE_ 6 NC1 8 NC2 9 Q1-OUT 2 Q

• Theory of Operation 7-7 The serial interface (SPI_DATA) is connected to the microprocessor via the data line (pin 5 of U5702), clock line (pin 6 of U5702), and chip enable line (pin 5 of U5702). Proper enabling of these lines should allow the microprocessor to load the synthesizer IC. The output of the VCO is fed into the buffer input port (pin 1) of U5701. The outpu

• Motorola MTS 2000, Model Charts & Maintenance Specifications v GTX Mobile Radio Model Chart 15 W GTX Mobile Radio, M11UGD6CB1AN FUF1140 Mobile Radio GKN6270 DC Power Cable GLN7317 Installation Kit HMN3413 Microphone FLN8752 Manuals GKN6271 Ignition Cable KIT BREAKDOWN FUF1140 Mobile Radio FBN5767 Bulk Packing FCN1629 Control Head FHN5875 Accessory Kit FUF1290 15 W Unified Chassis FCN1629 Control Head FLN8530 Control Head FLN8531 Control Head Hardware FUF1290 15 W Unified Chassis FLF5582 Main Board FLN8529 Main Board Hardware GTX Options Delete Options B90 All Accessories (except microphone) B71 Standard Mic (HMN3413 Compact Mic) B161 Standard Power Cable, 10-A Fuse (GKN6270) B65 Stand

• Motorola MTS 2000, Basic Maintenance 2-1 2 Basic Maintenance 2 Introduction This section of the manual describes preventive maintenance, safe handling of CMOS devices, and repair procedures and techniques. Each of these topics provides information vital to the successful operation and maintenance of your radio. Preventive Maintenance The radios do not require a scheduled preventive maintenance program; however, periodic visual inspection and cleaning is recommended. Inspection Check that the external surfaces of the radios are clean, and that all external controls and switches are functional. A detailed ins

• Motorola MTS 2000, Introduction 1-1 1 1 Introduction 1 Notational Conventions Throughout the text in this publication, you will notice the use of warnings, cautions, and notes. These notations are used to emphasize that safety hazards exist, and care must be taken and observed. Warning Caution Note An operational procedure, practice, or condition, etc., which it is essential to emphasize. Scope of this Manual This manual includes model/kit information, specifications, disassembly/ reassembly procedures, maintenance, alignment, trou

• Motorola MTS 2000, x Model Charts & Maintenance Specifications 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/LCS 2000 radio models are synthesized, 8-channel units that come standard with Tone Private-Line (TPL)/Dig- ital Private-Line (DPL) coded squelch or carrier squelch, which may be enabled/disabled on a per channel basis. Program- ming changes can be made by your local dealer. M11UGD6CB1AN Position 1 - Type of Unit M = Mobile Model Number: Position: 123456789101112 Position 4 - Frequency Band Position 2 & 3 - Model Series Position 5 - Power L

• Motorola MTS 2000, 1-2 Introduction To ensure personal safety, please observe the following simple rules: Air Bag Warning Installation of vehicle equipment should be performed by a professional installer/ technician qualified in the requirements for such installations. An air bag’s size, shape and deployment area can vary by vehicle make, model and front compartment configuration (e.g., bench seat vs. bucket seats). Contact the vehicle manufacturer’s corporate headquarters, if necessary, for specific air bag information for the vehicle make, model and front

• Motorola MTS 2000, Theory of Operation 7-9 Diode D5601 located on the PA section acts as protection against transients and wrong polarity of the supply voltage. Electronic On/Off The radio has circuitry which allows radio software and/or external triggers to turn the radio on or off without direct user action. Some examples of where this is useful are: 1) automatic turn on when emergency switch is engaged; 2) automatic turn on when ignition is sensed and off when ignition is off. Q0611 is used to provide SW B+ to the various radio circuits. Q0611 acts as an electronic on/off switch controlled by Q0612 (the switch is on while Q061

• Motorola MTS 2000, ©Motorola Inc., 1996 All Rights Reserved 68P02945C70-O i Table of Contents Foreword . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Inside Front Cover GTX Mobile Radio Model Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . v GTX Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

More Instructions:

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