Maxon Telecom SM-2000 инструкция обслуживания

MAXON AMERICA, Inc. 10828 N. W. Air World Drive Kansas City, MO 64153 Phone 816-891-6320 Fax 816-891-8815 680-100-0045 Revision C ECO 98017 December 98 SM-2000 SERVICE MANUAL[...]

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TABLE OF CONTENTS MAXON SM-2000 MOBILE TABLE OF CONTENTS Page-i- December 98 Table Of Contents ....................................................i Specifications ........................................................1 Transceiver Nominal Performance ......................................1 General ................................................[...]

MAXON SM-2000 MOBILE TABLE OF CONTENTS Page-ii- December 98 Schematics and Block Diagrams ........................................5 9 SM-2150/VHF Front End Schematic ....................................5 9 SM-2450/UHF Front End Schematic ....................................5 9 SM-2000 TCXO Schematic ...........................................5 9 MA[...]

SPECIFICATIONS TRANSCEIVER NOMINAL PERFORMANCE Performance Specifications .............................. FTZ 17TR2049 July 88 TIA/EIA-603 IEC 68 Series EC 529 IP54 MIL STD 810 C,D,E RF Output Power ...................................... 25 W Modulation Type ....................................... G3E/F3E (PM/FM) Audio power ........................[...]

Switching range TX and RX (without re-tuning) Channel spacing ....................................... 25 kHz / 20 kHz / 12.5 kHz programmable (25 kHz - 12.5kHz switchable by CPU control) Dimensions ( i n/m m ) .................................... 2(H) x 7(W) x 6.25(D) 45(H) x 157(W) x 140(D) Weight 3lbs, 6oz/ 1.6kg (with mic) TRANSMITTER Tests meth[...]

Channel Spacing (kHz) Without sub audible tone modulation With sub audible tone modulation @ 10% peak deviation MAX DEV 25 + 5.0 kHz + 5.0 kHz 12.5 + 2.5 kHz + 2.5 kHz Audio characteristic .................................... (Method as FTZ 17 TR 2049 July 1988) MOD Type G3 ......................................... Within +1/-3 dB of 6 dB/octave pr[...]

TX TONE MODULATION CHARACTERISTICS Sub audible tones - CTCSS Tone range ............................................ 67 – 250 Hz @ 0.3 % accuracy Tone standard ......................................... RS-220A EIA Standard Non-standard tones ..................................... 50 – 260 Hz @ 0.3 % accuracy Nominal tone deviation ..............[...]

AF powe r............................................. 5 W maximum @10% Distortion into a 4 ohm load. 4 Watts nominal. AF frequency response .................................. Method as FTZ 17 TR 2049 July 1988 MOD Type G3 ......................................... Within +1/-3 dB of 6 dB/octave de-emphasis curve 300 Hz – 2.55 kHz for 12.5 kHz Cha[...]

INTRODUCTION Advanced state-of-the-art technology is used in the design and manufacturing of the SM-2000 Mobile. The Phase Lock Loop (PLL) synthesizer provides more flexibility and capability in the SM-2000 Mobile. This scanning mobile has 4 channel capability. It offers CTCSS, DCS, scanning, priority channel, and many other functions. All these fu[...]

UNPACKING INFORMATION Check the carton carefully for the following items: 1 Transceiver Unit 2 Microphone 3 DC Power Cord 4 Mobile Mounting Bracket 5 Assembly Hardware 6 Operating Guide MAXON SM-2000 MOBILE UNPACKING INFORMATION Page-7- December 98[...]

GENERAL DESCRIPTION The Maxon SM-2000 is a rugged two way FM mobile radio which operates from 136-174 MHz (VHF) in two bands & 400-512 MHz (UHF) in five bands. The SM-2000 is a synthesized radio utilizing microcomputer technology to provide reliable high quality simplex two-way mobile communications. The SM-2000 transmitter output power level i[...]

DESCRIPTION OF CONTROLS DESCRIPTION OF CONTROLS The controls, indicators and microphone/programming connector are located on the front panel. The Monitor and Auxiliary buttons are located on the radio’s front panel. The following table details the Mobile controls, indicators, and connections. TABLE 2 Controls, Indicators, And Connections ITEM FUN[...]

Rear Panel Connections ITEM FUNCTION 1. Antenna Connector ( S0-239 ) 50 ohm connector 2. DC Power Connector Used to connect the mobile to the power supply 13.2 VDC or 13.8 VDC U.S.A. 3. External Speaker Connector Multipurpose socket used to connect to a remote speaker or for test connection MAXON SM-2000 MOBILE DESCRIPTION OF CONTROLS Page-10- Dece[...]

THEORY OF OPERATION Each of the Scanning Mobile radios, UHF & VHF, include a unique main P.C.B. consisting of RF, Digital and Analog circuitry. DIGITAL CIRCUITRY IC 411 and IC412 are digitally-controlled analog switches which internally consist of three single pole, double throw switches. By placing a high (5V) or low (0V) on the control lines [...]

EEPROM RX/TX channels, CTCSS/DCS as well as other data from the programmer are stored in the EEPROM. The data stored is retained without power supplied. This is a non-volatile memory. The EEPROM may have information re-programmed or erased. IC408 is an EEPROM with 2048 (256x 8) bit capacity and data is written and read serially, with the Programmin[...]

PLL IC101 (MC1459IF) is a PLL frequency synthesizer with an on-board 1.1 GHZ divide by 64/65 dual modulus prescaler. In addition to the prescaler and frequency counters, the synthesizer IC has a a phase detector and a C register (Configuration register) that allows certain functions to be configured as desired. The synthesizer is serially controlle[...]

RF SECTION (SM-2150/VHF) VHF Transmitter The Transmitter is comprised of: 1. Microphone Audio Circuit 2. Transmitter Stage and Harmonic Filter 3. Automatic Power Control 4. Frequency Synthesizer Circuit Microphone Audio Circuit Microphone audio from the digital circuitry is amplified, pre-emphasized, limited, and mixed with Sub-Audible and applied [...]

RX VCO The RX VCO comprises JFET Q351, coil L356 and varactor D353 and is configured as a Colpits oscillator. D353 produces a change in frequency with a change in DC voltage and is controlled by the phase detector signal present at the anode. The local oscillator signal at the drain of Q351 is applied to RF out of the module when diode D103 is reve[...]

Out of Lock Detector The out-of-lock detector produces a high logic level when Fr and Fv are in the same phase and frequency, low logic level pulses when the loop is out-of-lock at Pin 2 of IC101. The signals at Pin 2 of IC101 are buffered by Q106 and then integrating by R114 and C122. The product of the integrating circuit is fed to L/D port. Pres[...]

Receiver Audio Circuit The receiver audio circuit is comprised of a low pass filter and an audio amplifier on the RF PCB. Low Pass Filter The low pass filter is configured from coil L227, capacitor C201 and resistor R206.AF signals from Pin 9 of IC109 are filtered by the low pass filter to remove any components of the 455kHz IF signal. The filtered[...]

RF SECTION (SM-2450/UHF) UHF Transmitter The Transmitter is comprised of: 1. Microphone Audio Circuit 2. Transmitter Stage and Harmonic Filter 3. Automatic Power Control 4. Frequency Synthesizer Circuit Microphone Audio Circuit Microphone audio is pre-emphasized, limited and mixed with sub-audible tones to provide the modulating signal for the tran[...]

Voltage Controlled Oscillator Circuit The circuit produces carrier frequencies during transmit and local oscillator frequencies during receive. Transistor Q107 is configured as a power supply ripple filter. The VCO utilizes transistor Q108, varactor D101 , D102 and trimmer capacitor TC101 . These components are configured as a Colpitts oscillator. [...]

The quadrature detector is also configurable for narrow or wide channel spacing by software control of Q219 and diode D127. These components with R219 parallel R211 to maintain audio output at the proper level for the selected bandwidth. Q134 inserts wideband squelch adjustment RV102 into the circuit whenever standard filter CF104 is selected. This[...]

TEST SETUP MAXON SM-2000 MOBILE TEST SETUP Page-21- December 98 TRANSMIT TESTS RECEIVER TESTS VARIABLE POWER SUPPLY WITH DC VOLT/CURRENT METER AUDIO GENERATOR SM-2000 DEVIATION METER DUMMY LOAD ATTENUATOR DISTORTION ANALYZER OSCILLOSCOPE COMMUNICATION MONITOR OR FM SIGNAL GENERATOR FREQUENCY COUNTER VARIABLE POWER SUPPLY POWER METER DISTORTION ANAL[...]

SM-2150/VHF ALIGNMENT PROCEDURE It is important that the TCXO be on the correct frequency before performing a complete alignment of the radio. An incorrect TCXO frequency can impair the performance and even cause mis-alignments. Normally the transmitter is monitored with a frequency counter or service monitor while the transmitter is keyed at it’[...]

Receiver Alignment RF • NOTE: The Receiver front end is a pre-aligned module. There are no available field adjustments. 1. Connect an RF signal generator to the ANT socket and a SINAD meter to the external speaker jack ( J1 ) located at the rear panel. 2. Adjust RV103 to the fully open position to hear receiver noise. 3. Adjust the VOLUME control[...]

Squelch Adjustment 1. Select a receiver channel that is programmed for narrow band (12.5 kHz) operation. 2. Set the RF signal generator to the receiver frequency. Set the AF modulation signal to 1 kHz at 1.5k deviation. 3. Adjust the RF output level of the RF signal generator until the 1 kHz signal is heard. 4. Adjust the RF signal to the level des[...]

CTCSS/DCS Deviation Adjustment • Note:The following adjustment should be preset with factory alignment. If an adjustment must be made the following procedures must be followed: 1. Program the radio with a 67.0Hz tone on one channel and 250.3Hz on another channel. 2. Connect a power meter and modulation meter to the radio antenna jack. 3. Adjust R[...]

ALIGNMENT POINTS DIAGRAM (SM-2150/VHF) MAXON SM-2000 MOBILE ALIGNMENT POINTS DIAGRAM (SM-2150/VHF) Page-26- December 98 ANT RV104 RV105 T103 DISCRIMINA TOR TX HI POW ER TX LOW POWER SQUELCH 12.5 KHz CH/SP SQUELCH 25 KHz CH/SP CTCSS DCS MODULA TION RV103 RV102 L356 T101 L353 TCXO1 TC701 TP1 RV402 RV101 RV403 T102[...]

SM-2450/UHF ALIGNMENT PROCEDURE It is important that the TCXO be on the correct frequency before performing a complete alignment of the radio. An incorrect TCXO frequency can impair the performance and even cause mis-alignments. Normally the transmitter is monitored with a frequency counter or service monitor while the transmitter is keyed at its h[...]

11. Adjust the RF output voltage level of the RF signal generator keeping the SINAD meter readings between 6dB and 12dB . 12. Check for an RF voltage signal level of 0.31uV and a SINAD meter reading of 12dB or greater. 13. Select the highest receive frequency and check for a SINAD meter reading of 12dB or greater, at 0.42uV . (Sensitivity at the op[...]

Automatic Power Adjustment • NOTE: Continuous transmit periods longer than 5 minutes are to be avoided. 1. Connect the antenna output to an RF power meter or service monitor. 2. Set the PTT switch to the ON position. 3. Adjust the Variable resistor RV104 to give the appropriate transmit power. Nominally this is 25watts . 4. Set the PTT switch to [...]

Modulation Deviation Adjustment 1. Connect a power meter and a coupler to the radio. 2. Connect an AF generator to the test box. 3. Set the audio output to 30mV and the audio frequency to 1kHz . 4. Using the channel switch, select the highest transmit channel that does not have CTCSS or DCS programmed. 5. Press and hold the PTT switch. 6. Adjust RV[...]

ALIGNMENT POINTS DIAGRAM (SM-2450/UHF) MAXON SM-2000 MOBILE ALIGNMENT POINTS DIAGRAM (SM-2450/UHF) Page-31- December 98 RV403 RV101 TP1 TC101 T102 T101 RV104 RV1 0 5 T103 RV4 0 2 TX HI PWR TX LO PWR DISCRIMINA TOR CTCSS DCS TX DEVIA TION J1 TC701 CNTR FREQ RV103 RV102 SQUELCH 12.5 kHz CH/SP SQUELCH 25 kHz CH/ SP[...]

COMPONENT REPLACEMENT SURFACE MOUNT COMPONENTS Surface mount components should always be replaced using a temperature controlled soldering system. The soldering tools may be either a temperature controlled soldering iron or a temperature controlled hot-air soldering station. A hot-air system is recommended for the removal of components on these boa[...]

SURFACE MOUNT COMPONENT REPLACEMENT 1. “Tin” one terminal end of the new component and the corresponding pad of the PCB. Use as little solder as possible. 2. Place the component on the PCB pads, observing proper polarity for capacitors, diodes, transistors, etc. 3. Simultaneously touch the “tinned” terminal end and the “tinned” pad with[...]

PARTS LIST COMMON TO SM-2000 MAXON SM-2000 MOBILE PARTS LIST COMMON TO SM-2000 Page-34- December 98 REF # DESCRIPTION PART # 650-100-0002 TCXO PCB ASSY. (SEE NOTE 1) 650-090-0003 MA-4472 MIC ASSY. (SEE NOTE 1) NOTES: 1. Components are not available, assembly is non-repairable. REF # DESCRIPTION PART # 650-050-0003 CONTROL HEAD PCB ASSY. CON1 HEADER[...]

650-000-0001 SM-2150/VHF MAIN BOARD MAXON SM-2000 MOBILE 650-000-0001 SM-2150/VHF MAIN BOARD Page-35- December 98 REF # DESCRIPTION PART # C401 CHIP CERAMIC 0.001UF 130-A17-6Z C402 CHIP CERAMIC 0.22UF 130-270-7Y C403 CHIP CERAMIC 0.01UF 130-172-2Z C404 ELECT CAPACITOR 10UF 101-025-9 C405 CHIP CERAMIC 220PF 132-220-2Z C406 CHIP CERAMIC 220PF 132-220[...]

MAXON SM-2000 MOBILE 650-000-0001 SM-2150/VHF MAIN BOARD Page-36- December 98 REF # DESCRIPTION PART # Q550 TRANSISTOR 202-113-1 Q551 TRANSISTOR 202-113-1 Q552 TRANSISTOR 202-113-1 Q553 TRANSISTOR 202-113-1 R186 CHIP RESISTOR 47K 060-473-2Z R401 CHIP RESISTOR 680K 060-684-6Z R402 CHIP RESISTOR 47K 060-473-2Z R403 CHIP RESISTOR 10K 060-103-8Z R404 C[...]

MAXON SM-2000 MOBILE 650-000-0001 SM-2150/VHF MAIN BOARD Page-37- December 98 SM-2150L VHF BAND 1 (136-162 MHz) REF # DESCRIPTION PART # FRONT-END PCB ASSEMBLY 650-110-0011 MAIN BOARD PARTS C155 CHIP CERAMIC 4PF 134-007-7Y C160 CHIP CERAMIC 24PF 132-407-5Y C164 CHIP CERAMIC 18pF 131-816-6Y C165 CHIP CERAMIC 9pF 139-003-8Y C245 CHIP CERAMIC 5PF 135-[...]

MAXON SM-2000 MOBILE 650-000-0001 SM-2150/VHF MAIN BOARD Page-38- December 98 REF # DESCRIPTION PART # FRONT-END PCB ASSEMBLY (REFER TO BAND CHART) C1 CHIP CERAMIC 470PF 134-761-4Y C101 CHIP CERAMIC 220PF 132-220-2Y C102 CHIP CERAMIC 220PF 132-220-2Y C103 CHIP CERAMIC 220PF 132-220-2Y C104 CHIP CERAMIC 220PF 132-220-2Y C105 CHIP CERAMIC 5PF 135-010[...]

MAXON SM-2000 MOBILE 650-000-0001 SM-2150/VHF MAIN BOARD Page-39- December 98 REF # DESCRIPTION PART # C247 CHIP CERAMIC 220PF 132-220-2Y C248 CHIP CERAMIC 27PF 132-714-2Y C250 ELECT CAPACITOR 47UF 104-713-2 C251 CHIP CERAMIC 470PF 134-761-4Y C252 CHIP CERAMIC 0.001UF 130-A17-6Y C253 CHIP CERAMIC 75PF 137-504-4Y C255 CHIP CERAMIC 470PF 134-761-4Y C[...]

MAXON SM-2000 MOBILE 650-000-0001 SM-2150/VHF MAIN BOARD Page-40- December 98 REF # DESCRIPTION PART # L113 COIL SPRING 310-794-0 L115 COIL SPRING 310-793-9 L116 COIL SPRING 310-224-2 L117 COIL SPRING 310-368-9 L118 COIL CHOKE 1K 310-218-7 L119 COIL CHIP 0.15UH 310-706-1 L120 COIL CHOKE 1K 310-218-7 L121 COIL SPRING 310-275-8 L122 COIL ASS’Y 509-[...]

MAXON SM-2000 MOBILE 650-000-0001 SM-2150/VHF MAIN BOARD Page-41- December 98 REF # DESCRIPTION PART # R146 CHIP RESISTOR 15K 060-153-3Z R147 CHIP RESISTOR 560K 060-564-1Z R148 CHIP RESISTOR 15K 060-153-3Z R149 CHIP RESISTOR 10 060-100-5Z R150 CHIP RESISTOR 560K 060-564-1Z R151 CHIP RESISTOR 22K 060-223-3Z R152 CHIP RESISTOR 47 060-470-9Z R153 CHIP[...]

650-000-0002 SM-2450/UHF MAIN BOARD MAXON SM-2000 MOBILE 650-000-0002 SM-2450/UHF MAIN BOARD Page-42- December 98 SM-2450A UHF BAND 1 (400-430 MHz) REF # PART # VALUE FRONT-END PCB ASSEMBLY 650-110-0007 MAIN BOARD PARTS C130 133-932-7Y 39pF C133 131-039-1Y 10pF C134 134-767-0Y 4.7pF C135 139-003-8Y 9pF C136 139-003-8Y 9pF C158 131-039-1Y 10pF C242 [...]

MAXON SM-2000 MOBILE 650-000-0002 SM-2450/UHF MAIN BOARD Page-43- December 98 SM-2450E UHF BAND 4 (470-490 MHz) REF # PART # VALUE FRONT-END PCB ASSEMBLY 650-110-0009 MAIN BOARD PARTS C130 131-829-8Y 18pF C133 136-015-4Y 6pF C134 133-321-5Y 3.3pF C135 135-019-3Y 5pF C136 137-007-1Y 7pF C158 133-321-5Y 3.3pF C242 137-007-1Y 7pF C243 133-321-5Y 3.3pF[...]

MAXON SM-2000 MOBILE 650-000-0002 SM-2450/UHF MAIN BOARD Page-44- December 98 REF # DESCRIPTION PART # FRONT-END PCB ASSEMBLY (REFER TO BAND CHART) ANT1 CONNECTOR ANT 422-907-0 ANT1 CONNECTOR SW-1456(BNC-R) 421-655-7 ANT1 PIN CU &1.1X13(101-01) 860-129 C101 CHIP CERAMIC 220PF 132-220-2Y C102 CHIP CERAMIC 220PF 132-220-2Y C103 CHIP CERAMIC 220PF[...]

MAXON SM-2000 MOBILE 650-000-0002 SM-2450/UHF MAIN BOARD Page-45- December 98 REF # DESCRIPTION PART # C219 CHIP CERAMIC 220PF 132-220-2Y C220 CHIP CERAMIC 220PF 132-220-2Y C221 DIP TANTALUM 1UF 141-008-6Z C222 DIP TANTALUM 10UF 141-012-9Z C223 CHIP CERAMIC 220PF 132-220-2Y C224 ELECT CAPACITOR 1000UF 101-A02-8 C225 CHIP CERAMIC 0.1UF 130-A60-4Y C2[...]

MAXON SM-2000 MOBILE 650-000-0002 SM-2450/UHF MAIN BOARD Page-46- December 98 REF # DESCRIPTION PART # L101 COIL CHIP 0.68UH 310-711-5 L102 COIL CHIP 0.68UH 310-711-5 L103 COIL CHIP 47NH 310-861-7 L104 COIL CHIP 27NH 310-860-6 L106 COIL CHIP 27NH 310-860-6 L107 COIL SPRING 310-304-1 L108 COIL CHIP 18NH 310-859-6 L110 COIL CHIP 18NH 310-859-6 L111 C[...]

MAXON SM-2000 MOBILE 650-000-0002 SM-2450/UHF MAIN BOARD Page-47- December 98 REF # DESCRIPTION PART # R140 CHIP RESISTOR 10 060-100-5Z R141 CHIP RESISTOR 470 060-471-0Z R142 CHIP RESISTOR 10K 060-103-8Z R143 CHIP RESISTOR 1.8K 060-182-9Z R144 CHIP RESISTOR 51 060-510-2 R146 CHIP RESISTOR 15K 060-153-3Z R147 CHIP RESISTOR 560K 060-564-1Z R148 CHIP [...]

COMPONENT PINOUT MAXON SM-2000 MOBILE COMPONENT PINOUT Page-48- December 98 OP Amp IC404,406,410 KIA324F Analog SW IC 9 1 16 8 IC101 CPU IC409 1 4 5 8 BASE DIAG RAM MANUF ACT URER'S P ART NUM BER REFERENCE NO. TYPE LM358M IC104, IC105 OP Amp MC14519IF PLL MC14053 IC41 1,412 HD4074818 80 61 60 41 40 21 20 1 A T93C56-10S 1 IC408 EEPROM 20 10 1 1[...]

MAXON SM-2000 MOBILE COMPONENT PINOUT Page-49- December 98 Q102,103,504,821,822 *Q351,*352 KT A1504S(ASG) BCX-18L T1 E B C 2 (SOURCE) 1 (DRAIN) 3( G A T E ) BASE DIAGRAM MANUF ACTURER'S P ART NUMBER REFERENCE NO. *Q122 MMBFJ309L T1 MMBC1321(Q4) **Q130 MMBC1321 *Q106 KTC3875S(ALG) Q101,104,360,550-553 KRA1 10S(PK) K R C 111 S **Q1 19,*139,128 *[...]

MAXON SM-2000 MOBILE COMPONENT PINOUT Page-50- December 98 KDS184S(B3) MMBV105 MMBD101 MMBD101 D551,552 *D800 **D601 KDS226(C3) KDS181(A3) D101,102 1SV229 IN5404 **D120 MI301 D127 D807,808,810,81 1 1SS241(TY) BZX84C-5V D106,125,129,801,803 D805 Schematic ZENER REFERENCE NO. P AR T NUMBER MANUF ACTURER'S BASE DIAGRAM Unless otherwise indicated [...]

VOLTAGE CHARTS (SM-2150/VHF) MAXON SM-2000 MOBILE VOLTAGE CHARTS (SM-2150/VHF) Page-51- December 98 IC409 PIN DESC RIP TION TX RX PIN D ESCR IPTION TX R X 1 DATA 0 0 21 CH-4 2 EEPRO M ENABLE 0 0 22 CH-8 3 PLL ENABLE 5 5 23 MONIT OR 5 5/0 4 CHANNEL SPACING 5/ 0 5/0 24 PTT 0 3 .9 5 DATA IN 0 0 25 PROG. E NABLE 5 5 6 RED L.E.D . 5 0 26 TX ENAB LE 5 0 [...]

MAXON SM-2000 MOBILE VOLTAGE CHARTS (SM-2150/VHF) Page-52- December 98 IC404 IC407 PIN TX UNMODE RX MODE PIN NORMAL OPTI ON 1 1.9 VOICE 1.9 1 1.9 XT2 2 1.9 VOICE 1.9 2 0 XT2 3 1.9 VOICE 1.9 3 3.6 XT2 45 5 4 0 X T 2 5 1.9 VOICE 1.9 5 2 1.9 6 1.9 VOICE 1.9 6 5 5 7 1.9 VOICE 1.9 7 1.9 1.9 8 1.9 VOICE 1.9 8 1.05 XT2 9 1.9 VOICE 1.9 9 5 CLK 10 1.9 VOICE[...]

MAXON SM-2000 MOBILE VOLTAGE CHARTS (SM-2150/VHF) Page-53- December 98 IC109 PIN 1 2 3 4 5 6 7 8 BU SY 7 OSC 6 7 .2 6 6 6 7. 2 R X (MU TE) 7 OS C 6 7.2 6 6 6 7.2 PIN 9 10 11 12 13 14 15 16 BU SY AUDIO 0.8 NOISE 2. 5 7 4.5 GND 2 RX (MU T E) AUDIO 0.8 NOISE 0 7 0 GND 2 IC101 PIN 1 2 3 4 5 6 7 8 RX VOLTAGE 0 5 5 5 5 PD GND 0 TX VOLTAGE 2. 5 5 5 5 0 0 [...]

VOLTAGE CHARTS (SM-2450/UHF) MAXON SM-2000 MOBILE VOLTAGE CHARTS (SM-2450/UHF) Page-54- December 98 IC409 PIN DESC RIP TION TX RX PIN D ESCR IPTION TX R X 1 DATA 0 0 21 CH-4 2 EEPRO M ENABLE 0 0 22 CH-8 3 PLL ENABLE 5 5 2 3 MONI TOR 5 5/ 0 4 CHANNEL SPACING 5/ 0 5/0 24 PTT 0 3 .9 5 DATA IN 0 0 25 PROG. E NABLE 5 5 6 RED L.E.D . 5 0 26 TX ENA BL E 5[...]

MAXON SM-2000 MOBILE VOLTAGE CHARTS (SM-2450/UHF) Page-55- December 98 IC404 IC407 PIN T X UNMODE RX MODE PIN NOR MAL OPTION 1 1.9 VOIC E 1 1 .9 XT2 2 1. 9 VOICE 2 0 XT2 3 1. 9 VOICE 3 0 XT2 45 5 4 3 X T 2 5 1.9 VOICE 5 2 1.9 6 1.9 VOICE 6 5 5 7 1.9 VOICE 7 1.9 1.9 8 1. 9 VOICE 8 0 XT2 9 1.9 VOICE 9 5 CLK 10 1.9 VOICE 10 GND GND 11 GND GND 11 5 C L[...]

MAXON SM-2000 MOBILE VOLTAGE CHARTS (SM-2450/UHF) Page-56- December 98 IC109 PIN 1 2 3 4 5 6 7 8 BU SY 7 OSC 6 7 .2 6 6 6 7.2 R X (MU TE) 7 OS C 6 7.2 6 6 6 7.2 PIN 9 10 11 12 13 14 15 16 BU SY AUDIO 0.8 NOISE 0. 6 7 0 GND 2 RX (MU T E) AUDIO 0.8 NOISE 1. 8 7 8 GND 2 IC101 PIN 1 2 3 4 5 6 7 8 VOLTAGE 0 5 5 5 5 PD GND 0 PIN 9 10 11 12 13 14 15 16 VO[...]

TROUBLE SHOOTING CHART (SM-2000) Status Indications & Audible Tones Unit Does Not Program 1. Defective Programming Lead 2. Wrong Programming Mode 3. Defective MIC Connector 4. Defective IC412 Unit Does Not Work 1. Open DC fuse in Power Cable 2. Defective Volume Switch 3. Defective Regulator IC107, 105, 402 4. Broken DC Cable No Output from Spea[...]

No TX 1. Defective MIC 2. Defective CPU IC409 3. Defective IC412 No TX Power 1. Defective TX enable Q122 2. Defective APC Control Circuit Q125 3. Defective TX Power Buffer AMP Q116 and Q117 4. Defective TX Power Amp (SM-2150) Q118,Q120 5. Defective TX Power Module (SM-2450) IC103 6. Defective ANT SW D108 and D120 7. Defective ANT Connector Over Pow[...]

Page-59- December 98 4 Q702 MMBR9426 R714 2.2K Q701 MMBR 9426 R710 2.2K C705 100pF R713 47K R707 47K X701 12.8MHz R708 47K C703 91pF R705 47K D702 MMBV109 R706 47K D701 MMBV 105 R703 * R702 * TH703 150K R704 * LK701 2 R701 * TH701 10K 1 TH702 33K TC701 20pF C701 100pF C702 100pF R709 39K R71 1 4.7K C704 180pF R712 39K C706 220pF R715 2.2K 3 C806 18[...]

Page-60- December 98 2 6 4 1 3 5 + - CORD901 TX (YELLOW) AUDIO GND (SHIELD) MON/HOOK (BL ACK) N/C B+ (RED) AUDIO (WHITE) GROUND (GREEN) N/C MIC901 MIC C903 470P RX TX PTT SWITCH TEL PLUG L901 1MH C901 0.001(M) HOOK SP1 4O H M 4W SW 2 SW 1 VRT2 GND SP C821 0.001 R821 22 CURRENT LIMITER R822 4.7K Q821 KRA1504S C808 47P C815 470P SW POW ER VR801 10KR [...]

Page-61- December 98 TITLE V0100003.CDR CORELDRAW 09-10-96 SCALE SHEET OF SIZE DOCUMENT NUMBER B 1 1 NA Kansas City , Missouri 64153 10828 NW Air World Drive A W orld of Communications R SM-2000 BLOCK DIAGRAM 060-010-0003 DWN CHK PROD ENGR DATE DATE DATE - - DIMENSIONS ARE IN MILLIMETERS UNLESS OTHERWISE NOTED TOLERENCES: HOLES LINEAR ANGLES .XX .X[...]

Page-62- December 98 TITLE SCALE SHEET OF SIZE DOCUMENT NUMBER B 1 2 NA Kansas City , Missouri 64153 10828 NW Air World Drive A W orld of Communications R SM-2000 MAIN BOARD SCHEMA TIC (DIGIT AL SECTION) 770-000-0002 UHF 770-000-0001 VHF DIGIT AL.DWG AUTOCAD R13c4 1 1-18-98 DWN CHK PROD ENGR DATE DATE DATE - - DIMENSIONS ARE IN MILLIMETERS UNLESS O[...]

Page-63- December 98 TITLE SCALE SHEET OF SIZE DOCUMENT NUMBER B 2 2 NA Kansas City , Missouri 64153 10828 NW Air World Drive A W orld of Communications R SM-2150/VHF RF SCHEMA TIC DIAGRAM 770-000-0001 DWN CHK PROD ENGR DATE DATE DATE - - DIMENSIONS ARE IN MILLIMETERS UNLESS OTHERWISE NOTED TOLERENCES: HOLES LINEAR ANGLES .XX .XXX + + NA NA NA - - [...]

Page-64- December 98 TITLE SCALE SHEET OF SIZE DOCUMENT NUMBER B 2 2 NA Kansas City , Missouri 64153 10828 NW Air World Drive A W orld of Communications R SM-2450/UHF RF SCHEMA TIC DIAGRAM 770-000-0002 DWN CHK PROD ENGR DATE DATE DATE - - DIMENSIONS ARE IN MILLIMETERS UNLESS OTHERWISE NOTED TOLERENCES: HOLES LINEAR ANGLES .XX .XXX + + NA NA NA - - [...]

Page-65- December 98 SW5 SW2 LED2 LED3 LED4 LED1 SW4 SW3 LED5 CON801 C283 SPKR D804 D805 D801 C809 C807 R801 SM-2000 CONTROL HEAD 650-050-0003 SM-2000 CONTROL HEAD 650-050-0003[...]

Page-66- December 98 RVC01 SM-2150/VHF MAIN BOARD ASSY. 650-000-0001 SM-2150/VHF MAIN BOARD ASSY. 650-000-0001[...]

Page-67- December 98 - + PW R D124 T104 C233 C224 C226 IC107 IC108 CON C221 C222 PW R1 C152 C250 C256 C257 C260 IC103 C258 C261 C262 C404 IC402 C435 IC406 C428 R462 R465 R464 R463 R434 C239 C142 C146 C121 C108 C1 10 R104 R105 Q102 R1 13 C199 R1 14 C189 C 111 C122 Q105 Q101 Q104 R102 R100 C147 R142 R143 C558 C407 IC405 IC408 IC407 IC41 1 IC401 IC412[...]

Page-68- December 98 SM-2000 EXPLODED VIEW[...]

Page-69- December 98 REF # PART # DESCRIPTION QTY 1 801-282-A E.S.C NORYL N190J-7002 1 2 905-510 FELT 30-R16.5 (2) XT0.3 FELT BLK 1 3 795-654 OVERLAY LEXAN T0.5 1 4 826-137 KNOB (FOR VOL) ABS 94HB BLK 1 5 826-120 KNOB (FOR CH) ABS 94HB BLK 1 6 650-346 NUT RING (FOR VOL) M7X0.75 (P) &9.9 BSBM 1 7 650-335 NUT RING (FOR CH) M9X0.75 (P) &11 BSB[...]

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