Gebruiksaanwijzing /service van het product GR47/GR48 van de fabrikant Sony Ericsson
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Product Photo/Illustration GR47/GR48 Integrator’s Manual.
The GR47 described in this manual conforms to the Radio and Telecommunica tions Terminal Equipment (R& TTE) directive 99/5/EC with requirements covering EMC directive 89/33 6/EEC and Low Vo ltage directive 73/23/EEC. The product fulfil s the requirements according to 3GPP TS 51.
LZT 123 7589 R1A Contents Overview ................................................................................................................... 5 1. Introduction ..............................................................................
LZT 123 7589 R1A Real Time Clock........................................................................................................ 49 6. Antenna Connector ......................................................................................
Product Photo/Illustration Overview.
6 LZT 123 7589 R1A 1. Introduction 1.1 T arget U sers The GR47 and GR48 radio devices are designed to be integrated into machine-to-machine or man-to-machine communications applications. They are intended to be used by manufacturers, system integrators, applications developers and deve lopers of wireless communications equipment.
2. GR 47/GR4 8 RADIO DEVICE S 7 LZT 123 7589 R1A 2. GR47/GR48 Radio Devices 2.1 Abo ut the GR47/GR48 Family Two radio devices make up the family; GR47 and GR48, for use in the E-GSM900/GSM1800 and GSM850/ GSM1900 bands respectively. 1RWH This manual refers to the GR47 an d GR48 as radio devices.
2. GR 47/GR4 8 RADIO DEVICE S 8 LZT 123 7589 R1A . Figure 2.1 Main Blocks in a W i reless System (emb edded application) Figure 2.2 Main Blocks in a W ireless System (exte rnal micro-controller) In accordance with the recom me ndations of ITU- T (International Telecommunication Union - T elecommunications Standardisation Sector ) V.
2. GR 47/GR4 8 RADIO DEVICE S 9 LZT 123 7589 R1A The functions of the radio devi ce fo llow the recommendation s provided by ETSI (European Telecommunications Standards Institute) and ITU-T. ETSI specifies a set of AT commands for controlling the GSM element of the radio device; these commands are supplemented by Sony Ericsson specific comm ands.
2. GR 47/GR4 8 RADIO DEVICE S 10 LZT 123 7589 R1A 2.3. 2 Short Messag e Servi ce The radio device supports the following SMS services: • Sending; MO (mobile-originated) with both PDU (protocol data unit) and text mode supported. • Receiving; MT (mobile-terminated) with both PDU and text mode supported.
2. GR 47/GR4 8 RADIO DEVICE S 11 LZT 123 7589 R1A 2.3. 4 Dat a The radio device supports the following data protoc ols: • *356*HQHUDO3DFNHW5DGLR6HUYLFH The radio devices are Class B terminals.
2. GR 47/GR4 8 RADIO DEVICE S 12 LZT 123 7589 R1A 2.4 Ser vice and Sup port 2.4. 1 W eb Pages Visit our web s ite for the follow ing informat ion: • where to buy radio devices or for recommendations co ncerning accessories and components; • the telephone number for cust omer support in yo ur region; • F AQs (frequently asked questions).
2. GR 47/GR4 8 RADIO DEVICE S 13 LZT 123 7589 R1A All the user needs to provide, is a computer or micro-contr oller and the expertise to use AT commands.
3. ABBREVIATIONS 14 LZT 123 7589 R1A 3. Abbreviations Abbreviation Explanation s AMR Adaptive Multi Rate A TMS Audio to Mobile Station AFMS Audio from Mobile Station CBM Cell Broadcast Message CBS Cel.
3. ABBREVIATIONS 15 LZT 123 7589 R1A PDU P rotocol Data Unit RF Radio Frequ enc y RFU Rese rved fo r Futu re Use RLP Radio Link Prot ocol RTC Real Time Clo ck SDP Service Discovery Protocol SIM Subscr.
Product Photo/Illustration Integrating the Radio Dev ice.
17 LZT 123 7589 R1A 4. Mechanical Description 4.1 Inter face Descri ption The pictures below show the mechanical design of the radi o device along with the positions of the different connectors and mounting holes. The radio device is protected with AISI 304 stainless s teel covers that meet the environmental and EMC requirements.
4. MECHAN ICAL DES CRIPTIO N 18 LZT 123 7589 R1A • Keypad, display , microphone, speaker and battery are not part o f the radio device. • The SIM card is mounted in your application, external to the radio device. • The System Connector is a 60-pin, standard 0.
19 LZT 123 7589 R1A 5. Sy stem Conne cto r Inte r face 5.1 Over view Electrical conne ctions to the radio device (except the antenna), are made through the System Connector I nterface. The system connector is a 60-pin, standard 0.05 in (1.27 mm) pitch device.
5. SYSTE M CONNECT OR INTE RFACE 20 LZT 123 7589 R1A 1RWH Un der the heading “Dir” in the table, radio device input and output signals are indicated by the letters I and O respectively.
5. SYSTE M CONNECT OR INTE RFACE 21 LZT 123 7589 R1A 28 ADC3 I Analogu e Analogue to digit al conve rter 3 29 SDA I/O 2.75V , inter nal pull up I 2 C data 30 SCL O 2.75V , in ter nal pull up I 2 C clock 31 BUZZER O Digi tal 2. 75V Buzzer output from radio device 32 OUT3 KEYC OL3 DSR O O O Digital 2.
5. SYSTE M CONNECT OR INTE RFACE 22 LZT 123 7589 R1A 5.2 Genera l Electri cal and Log ical Character isti cs Many of the signals, as indicated in the table above, are high-speed CMOS logic inputs or outputs powered from a 2.75 V ± 5 % internal voltage regulator, and are defined as Digital 2.
5. SYSTE M CONNECT OR INTE RFACE 23 LZT 123 7589 R1A • The SIM output signals and th e SIMVCC supply w ill continuously withstand a short circuit to any voltage within the range 0 V to 4.1V . 5.3 Grou nds There are two ground connections in the radio device, AGND (analogue ground) and DGND (digital ground).
5. SYSTE M CONNECT OR INTE RFACE 24 LZT 123 7589 R1A Connect all VCC pins together in your application in order to carry the current drawn by the radio device. The electrical characteristics for VCC are shown in the table below. 1RWH The ra dio device has no internal capacitance to supply the large current peaks during GSM burst transmission.
5. SYSTE M CONNECT OR INTE RFACE 25 LZT 123 7589 R1A Safety considerations should be taken into account. For example, monitoring the temperature of the battery. If the temperature o f the battery exceeds its specif ication limits , battery charging m ust be stopped immediately.
5. SYSTE M CONNECT OR INTE RFACE 26 LZT 123 7589 R1A (1) The GR47 me asures the volt age at VCC durin g the power- up sequence. It is import ant tha t both VCC and ON/OFF reach a minim um of 3. 2V before the ON/OFF low pulse is initiated. (2) In SER VICE mode.
5. SYSTE M CONNECT OR INTE RFACE 27 LZT 123 7589 R1A Tu r n i n g th e R a d i o D e v i c e O f f Figure 5.3 Off timings and VIO performance (2) It is a requiremen t from most GSM network providers that GSM products properly detach from the network duri ng a power-down sequence.
5. SYSTE M CONNECT OR INTE RFACE 28 LZT 123 7589 R1A Hard Shu tdown Sequen ce Figure 5.4 Hard Shutdown Sequence (4) T o imple ment th e Hard Shut down of the GR47, th e ON/OFF pu lse mu st be held low until the sequence is complete. En sure that ON/OFF is not released before VIO has been de activated by th e module.
5. SYSTE M CONNECT OR INTE RFACE 29 LZT 123 7589 R1A 5.7 Analo gue Audio ATMS is the audio input, and AFMS is the audio output, of the radio device. These signals can be used in car kit mode. There are three factory-set audio profiles: • portable handsfree • handset • car kit Portable handsfre e is the factory-set default pro file.
5. SYSTE M CONNECT OR INTE RFACE 30 LZT 123 7589 R1A The following tables show the nominal PGA (programming gain settings). For more information see the relevant AT comma nds.
5. SYSTE M CONNECT OR INTE RFACE 31 LZT 123 7589 R1A 5.7. 3 Mic ro phon e Sign als MICP and MICN are balanced differ ential microphone input pins. These inputs are compatible with an el ectret microphone.
5. SYSTE M CONNECT OR INTE RFACE 32 LZT 123 7589 R1A 5.7. 4 Speak er Sign als BEARP and BEARN are the speaker output pins. These are differential-mode outputs. The electri cal characteristics are given in the table below. (5) See PCMIN sig nal in 5.8 PCM Digital A udio, page 33.
5. SYSTE M CONNECT OR INTE RFACE 33 LZT 123 7589 R1A 5.8 PCM Digital Audio Figure 5.6 shows the PCM (Pulse Code Modulation) digital audio connection for external devices. These connections can be used to process PCM digital audio signals, bypassing the radio device’s internal analogue audio CODEC.
5. SYSTE M CONNECT OR INTE RFACE 34 LZT 123 7589 R1A 5.8. 1 PCM Data Format All of the radio device’s PCM signa ls, including signals between its CODEC and DSP conform to the PCM data I/O format of the industry standard DSP from Texas Instruments.
5. SYSTE M CONNECT OR INTE RFACE 35 LZT 123 7589 R1A PCM T iming Diagrams The PCM timing i s shown in Figure 5.8 below and it is seen that the CPU has 45 µs to serve an interrupt and setup data channels. Data is sent on the falling edge of the sync pulse.
5. SYSTE M CONNECT OR INTE RFACE 36 LZT 123 7589 R1A 5.9 Ser ial Da ta Inte r faces The serial channels, consisting of three UARTs, are asynchronous communication links to the application or accessory units. • UAR T1 has RS-232 functionality and is us ed for all on- and off -line communication.
5. SYSTE M CONNECT OR INTE RFACE 37 LZT 123 7589 R1A Digital 2.75 V CMOS input/output electrical characteristics apply. The standard character format consists of 1 start bit, 8 bit data, no parity and 1 stop bit. In all, there are 10 bits per character.
5. SYSTE M CONNECT OR INTE RFACE 38 LZT 123 7589 R1A 5.9. 3 Con tr ol Sig nals - RTS, CTS , DTR , DSR , DCD, RI UART1 control signals ar e active low and need a standard interface IC, such as the MAX3237, to generate standard RS232 levels. UART1 converted signals, together with DGND, RD and TD form a 9-pin RS232 data port.
5. SYSTE M CONNECT OR INTE RFACE 39 LZT 123 7589 R1A Data T er mi nal Ready (DTR) DTR indicates that the DTE is ready to receive data. It also acts as a hardware ‘hang-up’, terminating calls when switched high. The signal is active low. You can define the exact beh aviour of DTR with an AT command.
5. SYSTE M CONNECT OR INTE RFACE 40 LZT 123 7589 R1A 5.9. 5 UART3 - TD3 , RD3 UART3 is a full duplex serial communication port with transmission and reception lines. It has the same timing and electrical signal characteristics as UART1, TD and RD. Transmitted Data 3 (TD3) TD3 is used by your application to send data to the radio dev ice via UART3 .
5. SYSTE M CONNECT OR INTE RFACE 41 LZT 123 7589 R1A 5.10.1 SIM De tection - SIMPRESENCE SIMPRESENCE is used to determine whether a SIM card has been inserted into or removed from th e SIM card hold er. You should normally wire it to the “card inserted switch” of the SIM card holder, but different implementations are possible .
5. SYSTE M CONNECT OR INTE RFACE 42 LZT 123 7589 R1A The electrical characteristics are given below. The signal reference is DGN D. 5.12 Buzzer Connecting the BUZZER s ignal to an inverting transisto r-buffer followed by a piezoelectric transducer enables the radio device to play pre- programmed melodies or sounds.
5. SYSTE M CONNECT OR INTE RFACE 43 LZT 123 7589 R1A The following circuit can be used to connect an LED. Figure 5.10 Elect rical connections for the LE D 5.14 G eneral Purpose Digita l I/O P orts Signals which have an entr y in the Default Signa l column in the above table are multiplexed.
5. SYSTE M CONNECT OR INTE RFACE 44 LZT 123 7589 R1A The operational modes of multiplexed signals are controlled by AT commands and also by intrinsic functions available to an embedded The following table gives you the input impedance. These values only apply when the ports are co nfigured as input signals.
5. SYSTE M CONNECT OR INTE RFACE 45 LZT 123 7589 R1A 5.15 .2 I# /O# If pins labelled I# and O# are not being used for an alternative function they may be used for general purpose inputs or outputs respectively. The inputs have an on-board 100k pull-up resistor and the outputs are driven rail-to-rail at 2.
5. SYSTE M CONNECT OR INTE RFACE 46 LZT 123 7589 R1A 5.16 .1 Di gital to Analog ue Conver ter - DAC The DAC is an 8-bit converter. Conversion takes place when an AT command is sent to the radio device. The radio device sends the resulting analogue value to the DAC pin.
5. SYSTE M CONNECT OR INTE RFACE 47 LZT 123 7589 R1A 5.16 .2 Anal ogue to Digi tal Co nver ters 1, 2 an d 3 - ADCx The ADC is an 8-bit converter. An analogue value applied to any of the ADC pins is converted and stored in a register inside the radio device.
5. SYSTE M CONNECT OR INTE RFACE 48 LZT 123 7589 R1A 1RWH If the voltage of the signal to be measured may be altered by the internal circuitry of this shared signal, then the application should use ADC1, ADC2 or ADC3 instead. Figure 5.1 2 Input circuit f or combined digital I/O a nd ADC pins 5.
5. SYSTE M CONNECT OR INTE RFACE 49 LZT 123 7589 R1A 5.18 TX_ ON - Burst T ransmissio n Burst transmis sion is the time when a GSM transceiver unit is transmitt ing RF signals.
5. SYSTE M CONNECT OR INTE RFACE 50 LZT 123 7589 R1A In back-up mode, the back-up source must provide enough power for RTC operation. Refer to the table for the amount of curr ent required. The following table shows voltage characteristics for both modes.
6. ANTE NNA CO NNECTOR 51 LZT 123 7589 R1A 6. Antenn a Connect or The radio device’s antenna connector allows transmission of the radio frequency (RF) signals from the ra dio device to an external customer- supplied antenna. The connector is a micro-miniature coaxial MMCX surface mounted component.
7. K EYBOA RD IN TERFAC E 52 LZT 123 7589 R1A 7. Keyboard Inter face To increase I/O capa bilities, the radio device optimises the I/O by multiplexing or sharing different featur es on single pins. The I/O has been extended to allow simple interfacing of a matrix keypad.
7. K EYBOA RD IN TERFAC E 53 LZT 123 7589 R1A The method of connection is shown below. Figure 7.1 Keyboard matrix conne ctions 1RWH This matrix pattern may be repeated up to 5 columns and 4 rows (one column will use a ground connectio n as a virtual column driver).
8. HINTS FOR INTE GRATIN G THE RA DIO DEV ICE 54 LZT 123 7589 R1A 8. Hints for Integrating the Radio Device This chapter gives you advice and helpful hints on how to integrate the radio device into your application from a hardware perspective.
8. HINTS FOR INTE GRATIN G THE RA DIO DEV ICE 55 LZT 123 7589 R1A 8.1. 2 SIM Card • Before handling the SIM card in your application, ensure that you are not charged with static electricity . U se proper precautions to avoid electrostatic discharges.
8. HINTS FOR INTE GRATIN G THE RA DIO DEV ICE 56 LZT 123 7589 R1A 8.2 Inst allati on of the Radio Devi ce 8.2. 1 Wh ere t o Insta ll t he Ra dio De vice There are several conditions which need to be taken into consideration when designing your application as they might affect the radio device and its function.
8. HINTS FOR INTE GRATIN G THE RA DIO DEV ICE 57 LZT 123 7589 R1A • If you intend to use SMS in the application, ensure this is included in your (voice) subscription. • Consider the choice of the supplementary services described in section 2.3.2 Short Message Service, page 10.
8. HINTS FOR INTE GRATIN G THE RA DIO DEV ICE 58 LZT 123 7589 R1A 8.3 Antenna 8.3. 1 General The antenna is the component in your system that maintains the radio l ink between the network and the radio de vice.
8. HINTS FOR INTE GRATIN G THE RA DIO DEV ICE 59 LZT 123 7589 R1A In general, CE-marked products for r esidential and commercial areas, and light industry can withstand a minimum of 3 V/m. 8.3. 4 The An tenna Ca ble Use 50 Ω impedance low-loss cable and high-quality 50 Ω impedance connectors (frequency range up to 2 GHz) to av oid RF losses.
9. EMBEDDED APPLICA TIONS 60 LZT 123 7589 R1A 9. Embedded Applications The radio device has the capability to store and run customer written code in the form of a script during the processor ’s idle time, through the use of an on board interpreter. 9.
9. EMBEDDED APPLICA TIONS 61 LZT 123 7589 R1A 9.2. 2 M2 m powe r IDE (Inte grated Developm ent Environ ment) The IDE is a Windows based package which allows the user to write, simulate, debug and download the application into a radio device with the embedded application (EA) software.
10. TCP/I P STACK 62 LZT 123 7589 R1A 10. TCP/IP Stack An on board IP/TCP/UDP stack has b een integrated into the software negating the need for the customer to implement one in their own code base. This is only accessible by using an embedded applications (see section 9) using intrinsic functions.
11. TECHNICAL DATA 63 LZT 123 7589 R1A 11. T echnical Data Mech anical Spec ifica tions Power supply volta ge, normal oper ation Radio sp ecifica tions SIM car d Maximum length 50 mm Max imum width 33 mm Maximum thickness 6.82 mm(excluding c onnecto r pins and top of antenna connector) We i g h t 1 8 .
11. TECHNICAL DATA 64 LZT 123 7589 R1A Environ menta l spe cific ations Data Storage Oper ati ng t emper atu re range (full specification ) -10 ° C to + 55 ° C Oper ati ng t emper atu re range ( wor.
12. D ECLAR ATION OF CO NFORMIT Y 65 LZT 123 7589 R1A 12. Declaration of Confor mity.
Product Photo/Illustration Developer’s Kit.
DRAFT 6 7 LZT 123 7589 R1A 13. Introd uction to the Developer’ s Kit The developer’s kit for the radio devices is designed to get you started quickly.
13. I NTRODUCTION TO THE DEVELOPER’S KIT 68 LZT 123 7589 R1A 13.2 Gener al Functi oning of the Kit The following block diagrams are provided to help you understand the general principles of operation of the developer’s kit.
13. I NTRODUCTION TO THE DEVELOPER’S KIT 69 LZT 123 7589 R1A Figure 13.2, Figure 13.3 and Figure 13.4 show how various signals are routed on the developer’s board. Thicker lines indicate multiple signals. Figure 13.2 Miscellaneous si gn als, connection and routing Figure 13.
13. I NTRODUCTION TO THE DEVELOPER’S KIT 70 LZT 123 7589 R1A Figure 13.4 Comms signals, conne ction and routing X3 X2 UART1 Flow Control DSR, RI, DTR, CTS, RTS, DCD TD, RD TD2, RD2 TD3, RD3 UART SER.
14. USI NG THE DEVE LOPER’ S KIT 71 LZT 123 7589 R1A 14. Using the Developer’s Kit This section provides you with the information needed to setup and use the developer’s kit. Before changing switch and jumper settings, refer to “14.3 Jumpers”, page 74.
14. USI NG THE DEVE LOPER’ S KIT 72 LZT 123 7589 R1A 14.1 Start up Check List To use the developer’s kit in standard for mat check the following: • W ith the case lid removed, make sure the radi.
14. USI NG THE DEVE LOPER’ S KIT 73 LZT 123 7589 R1A 14.2 Devel oper’s Boa rd Overlay Figure 14.3 shows the developer’s board, including the position of all the connectors, switches and jumpers (default positions).
14. USI NG THE DEVE LOPER’ S KIT 74 LZT 123 7589 R1A 14.3 Jumpers All jumpers are located on the develo per’s board (see “Developer’s board overlay”, page 73). 3RZHUD QG&RQW URO 8$57 Jump er Defa ult Des crip tion INT /E XT INT Selects which voltage path supplies th e DK support circuitry (not the supply to the radio device).
14. USI NG THE DEVE LOPER’ S KIT 75 LZT 123 7589 R1A DIS - When fitted, the s erial por t drive r IC disables the receiver buffers t hat nor mally drive UART signals into the ra dio de vice. This will prev ent t he rad io de vice fro m rece iving data throu gh the seri al port .
14. USI NG THE DEVE LOPER’ S KIT 76 LZT 123 7589 R1A $XGLRDQG 3&0 0 LVF H OOD Q HR X V Jum per Def ault Description ULD T o OUT T o enable analog audio microphone path ULD must be conne cted to OUT using the jumpe r . OUT To U L D T o enable analog audio microphone path OUT must be connecte d to ULD using th e jumper .
14. USI NG THE DEVE LOPER’ S KIT 77 LZT 123 7589 R1A DCD Fitted Connects serial p ort contr ol signal DCD bet ween UART connector X4 and radio device. Note: DC D is a dual function sign al from the radio device. When t his signal is being used for any ot her purpose (e.
14. USI NG THE DEVE LOPER’ S KIT 78 LZT 123 7589 R1A 14.4 Switc hes All switches are mounted on the front panel of the developer’s box. Switch De fault Des cripti on Vcc (SW1) N/C This switch chooses the voltage source that the radio device will use.
14. USI NG THE DEVE LOPER’ S KIT 79 LZT 123 7589 R1A 14.5 Header s Header Connections Description PCM ULD, DLD, OUT , IN , SY N, CLK Carries digital audio PCM signals for acc ess by user application.
14. USI NG THE DEVE LOPER’ S KIT 80 LZT 123 7589 R1A 14.6 Connect ors Conne cto r Type Desc ript ion RADIO DEVI CE ‘X1’ 60 Pin Dual Row0. 05” pitch The radio de vice is 'plug ged-in ' to the development kit. This allows dire ct connection of th e mod ule to t he d evelop ment b oard.
14. USI NG THE DEVE LOPER’ S KIT 81 LZT 123 7589 R1A Handset ‘X6’ RJ9 socket Conne ctor for a standard tele pho ne h ands et. Carr ies signals from the balanced outp uts BE ARN a nd BEAR P and to the balanc ed input s MICN and MICP .
14. USI NG THE DEVE LOPER’ S KIT 82 LZT 123 7589 R1A 14.7 LED Indi cators EXT VCC 3 pin Circular This conn ector carrie s three sig nals: EXT VCC (1); CHG_IN (3); GND (2 ). (These signals are wired into PCB holes labelled EXT , CHG, GND respectively).
14. USI NG THE DEVE LOPER’ S KIT 83 LZT 123 7589 R1A 14.8 System Connector Pin Assignments Refer to the table below when monito ring signals on, or connecting to, X1. The table shows the system-connector pin assignments for the radio devices. See “System Connector Inte rface”, page 19for more details.
14. USI NG THE DEVE LOPER’ S KIT 84 LZT 123 7589 R1A Figure 14.5 Pin Orientation and Board assignments Figure 14.6 Applic ation Interface Co nnector (X2 and X3) - Pin Assignment PCM SIM INT P2 P0 LE.
Een belangrijk punt na aankoop van elk apparaat Sony Ericsson GR47/GR48 (of zelfs voordat je het koopt) is om de handleiding te lezen. Dit moeten wij doen vanwege een paar simpele redenen:
Als u nog geen Sony Ericsson GR47/GR48 heb gekocht dan nu is een goed moment om kennis te maken met de basisgegevens van het product. Eerst kijk dan naar de eerste pagina\'s van de handleiding, die je hierboven vindt. Je moet daar de belangrijkste technische gegevens Sony Ericsson GR47/GR48 vinden. Op dit manier kan je controleren of het apparaat aan jouw behoeften voldoet. Op de volgende pagina's van de handleiding Sony Ericsson GR47/GR48 leer je over alle kenmerken van het product en krijg je informatie over de werking. De informatie die je over Sony Ericsson GR47/GR48 krijgt, zal je zeker helpen om een besluit over de aankoop te nemen.
In een situatie waarin je al een beziter van Sony Ericsson GR47/GR48 bent, maar toch heb je de instructies niet gelezen, moet je het doen voor de hierboven beschreven redenen. Je zult dan weten of je goed de alle beschikbare functies heb gebruikt, en of je fouten heb gemaakt die het leven van de Sony Ericsson GR47/GR48 kunnen verkorten.
Maar de belangrijkste taak van de handleiding is om de gebruiker bij het oplossen van problemen te helpen met Sony Ericsson GR47/GR48 . Bijna altijd, zal je daar het vinden Troubleshooting met de meest voorkomende storingen en defecten #MANUAl# samen met de instructies over hun opplosinge. Zelfs als je zelf niet kan om het probleem op te lossen, zal de instructie je de weg wijzen naar verdere andere procedure, bijv. door contact met de klantenservice of het dichtstbijzijnde servicecentrum.
