Manuale d’uso / di manutenzione del prodotto SM-2000 del fabbricante Maxon Telecom
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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 .
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 .............
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 .
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.
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 .
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 .......
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 ............................
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.
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 .
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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 .
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.
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 ATTENU.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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 .
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 2.
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.
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.
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 060-1.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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 .
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.
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.
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 .
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.
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.
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.
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.
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.
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.
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 .
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.
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 .
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 .
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 .
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.
Page-70- December 98 Intentionally Left Blank.
Un punto importante, dopo l’acquisto del dispositivo (o anche prima di acquisto) è quello di leggere il manuale. Dobbiamo farlo per diversi motivi semplici:
Se non hai ancora comprato il Maxon Telecom SM-2000 è un buon momento per familiarizzare con i dati di base del prodotto. Prime consultare le pagine iniziali del manuale d’uso, che si trova al di sopra. Dovresti trovare lì i dati tecnici più importanti del Maxon Telecom SM-2000 - in questo modo è possibile verificare se l’apparecchio soddisfa le tue esigenze. Esplorando le pagine segenti del manuali d’uso Maxon Telecom SM-2000 imparerai tutte le caratteristiche del prodotto e le informazioni sul suo funzionamento. Le informazioni sul Maxon Telecom SM-2000 ti aiuteranno sicuramente a prendere una decisione relativa all’acquisto.
In una situazione in cui hai già il Maxon Telecom SM-2000, ma non hai ancora letto il manuale d’uso, dovresti farlo per le ragioni sopra descritte. Saprai quindi se hai correttamente usato le funzioni disponibili, e se hai commesso errori che possono ridurre la durata di vita del Maxon Telecom SM-2000.
Tuttavia, uno dei ruoli più importanti per l’utente svolti dal manuale d’uso è quello di aiutare a risolvere i problemi con il Maxon Telecom SM-2000. Quasi sempre, ci troverai Troubleshooting, cioè i guasti più frequenti e malfunzionamenti del dispositivo Maxon Telecom SM-2000 insieme con le istruzioni su come risolverli. Anche se non si riesci a risolvere il problema, il manuale d’uso ti mostrerà il percorso di ulteriori procedimenti – il contatto con il centro servizio clienti o il servizio più vicino.
