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Please Recycle Copyright © 2009 Sun Microsystems, Inc., 4150 Network Cir cle, Santa Clara, California 95054, U.S.A. All rights reserved. Sun Microsystems, Inc. has intellectual pr operty rights relating to technology embodied in the product that is described in this document.
iii Contents Preface ix 1. Preparing to Install the Sun Blade X6270 Server Module 1 About Your Server Module Shipment 1 Server Module Specifications 3 Physical Specifications 3 Electrical Specifications 3 Environmental Requir ements 4 Server Module Installation Task Checklist 4 Commonly Used Terms 5 2.
iv Sun Blade X6270 Server Module Installation Guide • December 2009 Server Module Optional Components Installation Procedures 14 Adding Memory Modules 14 Memory Module Installation Considerations 15.
Contents v Attaching Devices to the Server Using a Dongle Cable 41 ▼ Attach Devices to Server Using the 3-Cable Dongle 42 4. Setting Up ILOM 45 IP Configuration Task Checklist 46 Logging In to ILOM .
vi Sun Blade X6270 Server Module Installation Guide • December 2009 Solaris 10 OS T raining 66 Using the Solaris Installation Program 66 Sun Java Enterprise System 67 Sun Studio 1 1 67 Reinstalling the Solaris Operating System 67 Download Solaris Operating System 67 6.
Contents vii Download OpenSolaris Operating System 86 Index 87.
viii Sun Blade X6270 Server Module Installation Guide • December 2009.
ix Pr eface This Sun Blade X6270 Server Module Installation Guide contains procedur es for installing the server module into a chassis, connecting to the service processor , and configuring the pr einstalled Solaris™ Operating System option or OpenSolaris Operating System, if order ed.
x Sun Blade X6270 Server Module Installation Guide • December 2009 Title Content Part Number Format Sun Blade X6270 Server Module Product Notes Late-breaking information about the server module 820-.
Preface xi T ranslated versions of some of these documents are available at the web site described above in French, Simplif ied Chinese, and Japanese. English documentation is revised mor e frequently and might be more up-to-date than the translated documentation.
xii Sun Blade X6270 Server Module Installation Guide • December 2009 T ypographic Conventions Using UNIX Commands This document might not contain information about basic UNIX ® commands and procedur es such as shutting down the system, booting the system, and configuring devices.
1 CHAPTER 1 Pr eparing to Install the Sun Blade X6270 Server Module This chapter contains the following topics: ■ “About Y our Server Module Shipment” on page 1 ■ “Server Module Specificatio.
2 Sun Blade X6270 Server Module Installation Guide • December 2009 T ABLE 1-1 Sun Blade X6270 Server Module Conf igurations and Options X6270 Server Module Description Standard Server Components The following standard components are shipped on the Sun Blade X6270 Server Module: • Service Processor (SP) – One SP per server .
Chapter 1 Preparing to Install the Sun Blade X6270 Ser ver Module 3 Server Module Specif ications Physical Specif ications The Sun Blade X6270 Server Module is designed to be installed in a Sun Blade 6000 or 6048 Modular System chassis.
4 Sun Blade X6270 Server Module Installation Guide • December 2009 Envir onmental Requir ements T ABLE 1-3 gives the environmental requir ements for the Sun Blade X6270 Server Module.
Chapter 1 Preparing to Install the Sun Blade X6270 Ser ver Module 5 Commonly Used T erms The following table identifies some of the terms commonly used in this guide to describe the installation process of a server module in a Sun Blade 6000 or 6048 Series Chassis.
6 Sun Blade X6270 Server Module Installation Guide • December 2009 T ABLE 1-5 Commonly Used T erms T erm Definition Server Module Blade server hardware. Chassis Sun Blade 6000 or 6048 Modular System hardwar e. For additional information about these chassis systems, see the documentation for Sun Blade 6000 or 6048 Series Chassis at: http://docs.
7 CHAPTER 2 Install Server Module Optional Components This chapter describes how to install the following customer-installable options on the Sun Blade X6270 Server Module: Caution – The installation procedur es in this chapter assume that the server module has not yet been installed and powered-on in the system chassis.
8 Sun Blade X6270 Server Module Installation Guide • December 2009 Locations of Server Module Optional Components FIGURE 2-1 shows the locations of the Sun Blade X6270 Server Module optional components that are documented in this chapter .
Chapter 2 Install Server Module Optional Components 9 Note – Server module options and their part numbers are subject to change over time. For the most up-to-date list of components for the Sun Blade X6270 Server Module, click on the X6270 Server Module product page at: http://sunsolve.
10 Sun Blade X6270 Server Module Installation Guide • December 2009 Befor e Y ou Begin This section describes common information and procedures that apply to the installation of all server module options.
Chapter 2 Install Server Module Optional Components 11 Removing or Installing Server Module Cover As needed, consult the following procedures when r emoving or installing the server module cover . ■ “Remove Cover Fr om Server” on page 1 1 ■ “Install Cover on Server” on page 1 1 ▼ Remove Cover Fr om Server 1.
12 Sun Blade X6270 Server Module Installation Guide • December 2009 Removing or Replacing Filler Panels Each server module arrives with module-replacement f iller panels for CPUs, storage drives, and memory modules.
Chapter 2 Install Server Module Optional Components 13 Note – For instructions for adding or replacing chassis component f iller panels (for example, network modules or chassis monitoring modules), consult the documentation supplied with your chassis.
14 Sun Blade X6270 Server Module Installation Guide • December 2009 Server Module Optional Components Installation Pr ocedures The Sun Blade X6270 Server Module is shipped with a standard configuration.
Chapter 2 Install Server Module Optional Components 15 Memory Module Installation Considerations The Sun Blade X6270 Server Module supports a variety of DIMM configurations that can include single-rank (SR) DIMMs, dual-rank (DR) DIMMs, or quad-rank (QR) DIMMs.
16 Sun Blade X6270 Server Module Installation Guide • December 2009 DIMM Population Rules The DIMM population rules for the Sun Blade X6270 Server Module are as follows: 1. Do not populate any DIMM socket next to an empty CPU socket. Each processor contains a separate memory controller .
Chapter 2 Install Server Module Optional Components 17 ■ Populate the DIMM slots for each memory channel that are the farthest from the CPU first. For example, populate D8/D5/D2 first; then D7/D4/D1 second; and finally , D6/D3/D0. See FIGURE 2-3 . ■ Populate QR DIMMs first, followed by SR or DR DIMMs.
18 Sun Blade X6270 Server Module Installation Guide • December 2009 ▼ Install DIMMs 1. Remove the cover from the server . See “Remove Cover Fr om Server” on page 1 1 . 2. Remove the DIMM f iller panel. See “Remove or Insert Filler Panels” on page 12 .
Chapter 2 Install Server Module Optional Components 19 FIGURE 2-4 DIMM Socket Release and Alignment e. V erify that the DIMM ejector levers are upright, seated, and tight. Press on ejector levers to ensure that they are engaged properly . 4. Install the cover on the server .
20 Sun Blade X6270 Server Module Installation Guide • December 2009 ▼ Install the CPU Caution – CPU options should be installed only by a Sun qualified service technician. 1. Prepare the server for service. a. Power off the server and disconnect the power cord (or cords) from the power supply (or supplies).
Chapter 2 Install Server Module Optional Components 21 FIGURE 2-5 Installing the CPU b. Lower the pressure frame. Ensure that the pr essure frame sits flat around the periphery of the CPU. c. Engage the release lever by rotating it downward and slipping it under the catch [1 inset].
22 Sun Blade X6270 Server Module Installation Guide • December 2009 a. Install the top cover . See “Install Cover on Server” on page 1 1 . b. Install the server into the rack. See “Installing and Powering On the Sun Blade X6270 Server Module” on page 33 .
Chapter 2 Install Server Module Optional Components 23 FIGURE 2-6 Inserting CompactFlash Module 4. Install the server cover . See “Install Cover on Server” on page 1 1 . Adding a RAID Expansion Module The RAID expansion module (REM), if order ed, might not arrive installed on the Sun Blade X6270 Server Module.
24 Sun Blade X6270 Server Module Installation Guide • December 2009 ■ Sun Intel Adaptec BIOS RAID Utility User's Manual (820-4708) ■ Uniform Command-Line Interface User's Guide (820-21.
Chapter 2 Install Server Module Optional Components 25 a. Connect the jumper cable between the REM board and motherboard. b. Install the REM battery . See “Install Backup Battery for REM Option 4620A” on page 26 . FIGURE 2-8 5. Install the cover on the server .
26 Sun Blade X6270 Server Module Installation Guide • December 2009 FIGURE 2-9 Connecting REM Battery Cable 3. Install the cover on the server . See “Install Cover on Server” on page 1 1 . Adding a Fabric Expansion Module The Sun Blade X6270 Server Module is not shipped with the fabric expansion module (FEM) option installed.
Chapter 2 Install Server Module Optional Components 27 a. Slide the FEM board at an angle into the support bracket. b. Press the FEM board carefully into the connector . See FIGURE 2-10 . FIGURE 2-10 Inserting a FEM Board 4. Install the cover on the server .
28 Sun Blade X6270 Server Module Installation Guide • December 2009 Adding a Har d Disk Drive or Solid State Drive The hard disk drives (HDDs) or solid state drives (SSDs), if or dered, might not arrive installed on the Sun Blade X6270 Server Module.
Chapter 2 Install Server Module Optional Components 29 ▼ Add a Drive 1. Locate and remove the drive f iller panels from the server module bays. For drive locations on the server , see “Sun Blade X6270 Server Module Option Locations” on page 8 .
30 Sun Blade X6270 Server Module Installation Guide • December 2009 FIGURE 2-13 Add Drive - Server Installed in Chassis 4. Using your thumb or f inger , press on the middle of the drive’ s faceplate until the release lever engages with the chassis.
Chapter 2 Install Server Module Optional Components 31.
32 Sun Blade X6270 Server Module Installation Guide • December 2009.
33 CHAPTER 3 Installing and Powering On the Sun Blade X6270 Server Module This chapter contains the following topics: ■ “Installing the Server Module Into the Chassis” on page 34 ■ “Powering.
34 Sun Blade X6270 Server Module Installation Guide • December 2009 Installing the Server Module Into the Chassis Consult the following sections when installing a server module into a powered on cha.
Chapter 3 Installing and P owering On the Sun Blade X6270 Ser ver Module 35 Caution – T o pr otect electronic components fr om electrostatic damage, which can permanently disable the system or requi.
36 Sun Blade X6270 Server Module Installation Guide • December 2009 FIGURE 3-1 Inserting the Server Module Into the Chassis 4. Push the server module into the slot until the server module stops and is f lush with the chassis. See Boxes 2 and 3 in FIGURE 3-1 .
Chapter 3 Installing and P owering On the Sun Blade X6270 Ser ver Module 37 Note – The server SP can take several minutes to boot. As the server SP is booting, the OK/Power LED illuminates a slow blink (0.5 second on, 0.5 second off). After the server SP boots, the OK/Power LED illuminates a standby blink (0.
38 Sun Blade X6270 Server Module Installation Guide • December 2009 Powering On the Server Module After installing a server module into a powered-on chassis, the server module SP automatically boots and standby power from the chassis power supplies is supplied directly to the server module SP .
Chapter 3 Installing and P owering On the Sun Blade X6270 Ser ver Module 39 Note – The OK/Power LED will be set to standby blink only when there is enough chassis power for the server module to power on. If there is not enough chassis power , the OK/Power LED will r emain off until there is enough power for the server module to power on.
40 Sun Blade X6270 Server Module Installation Guide • December 2009 ▼ Power Of f the Server ● T o power off the server module from main power mode, use one of the following two methods: ■ Graceful shutdown – Use a pointed object or stylus to press and release the Power button on the front panel.
Chapter 3 Installing and P owering On the Sun Blade X6270 Ser ver Module 41 Note – When powered-on permissions become available, the OK/Power LED on the front panel of the server module will illuminate a standby blink.
42 Sun Blade X6270 Server Module Installation Guide • December 2009 Note – Direct management of an individual server module is through the embedded server module SP , Sun Integrated Lights Out Manager (ILOM). Access to the server module SP is made through the serial port or the chassis monitoring module (CMM) management network.
Chapter 3 Installing and P owering On the Sun Blade X6270 Ser ver Module 43 FIGURE 3-3 Dongle Cable Connections Figure Legend Dongle Cable Connectors 1 Dual USB 2.
44 Sun Blade X6270 Server Module Installation Guide • December 2009.
45 CHAPTER 4 Setting Up ILOM This chapter describes how to access the Sun Integrated Lights Out Manager (ILOM) software and how to initially conf igure an IP addr ess for the server module SP .
46 Sun Blade X6270 Server Module Installation Guide • December 2009 IP Conf iguration T ask Checklist T ABLE 4-1 summarizes an ordered list of tasks that you must perform to initially configur e an IP address for the server module SP .
Chapter 4 Setting Up ILOM 47 Logging In to ILOM This section presents the following procedur es: ■ “Log In to ILOM Using a Serial Connection” on page 47 ■ “Log In to ILOM From an Ethernet Connection Using the CLI” on page 48 ▼ Log In to ILOM Using a Serial Connection 1.
48 Sun Blade X6270 Server Module Installation Guide • December 2009 4. Log in to the ILOM command-line interface (CLI) using an administrator account. Note – The default ILOM administrator account shipped with each server module SP and CMM is root and changme .
Chapter 4 Setting Up ILOM 49 Note – The default ILOM administrator account shipped with each server module SP and CMM is root and changme . If this default administrator account has since been changed, contact your system administrator for an ILOM user account with administrator privileges.
50 Sun Blade X6270 Server Module Installation Guide • December 2009 2. V erify that an Ethernet cable is connected to the Ethernet port (NET MGT) on the CMM. 3. If applicable, obtain the MAC address of the server module SP on the cover of the server module.
Chapter 4 Setting Up ILOM 51 ▼ Assign a Static IP Addr ess to Server Module SP Using the CLI 1. Connect and log in to ILOM as described in one of these procedures: ■ “Log In to ILOM Using a Serial Connection” on page 47 ■ “Log In to ILOM From an Ethernet Connection Using the CLI” on page 48 2.
52 Sun Blade X6270 Server Module Installation Guide • December 2009.
53 CHAPTER 5 Conf iguring the Preinstalled Solaris 10 Operating System This chapter explains the steps for configuring the Solaris ™ 10 Operating System (OS) that is preinstalled on the har d disk drive (or solid state drive), if order ed. The preinstalled Solaris version is Solaris 10 10/09 or later .
54 Sun Blade X6270 Server Module Installation Guide • December 2009 Befor e Y ou Begin Before you begin conf iguring the preinstalled Solaris 10 OS, do the following: ■ Configur e an IP address for the server SP . For details, see Chapter 4 . ■ Ensure that main power has been applied to the server module host.
Chapter 5 Configuring the Preinstalled Solaris 10 Operating System 55 T ABLE 5-1 W orksheet for Solaris 10 Configuration Information f or Installation Description or Example Y our Ans wers: Defaults (*) Language Select from the list of available languages for the Solaris 10 software.
56 Sun Blade X6270 Server Module Installation Guide • December 2009 Name service Name service If applicable, which name service should this system use? • NIS+ • NIS • DNS • LDAP • None* Domain name Provide the name of the domain in which the system resides.
Chapter 5 Configuring the Preinstalled Solaris 10 Operating System 57 Default route Do you want to specify a default route IP address, or let the Solaris installation program find one? The default route pr ovides a bridge that forwards traff ic between two physical networks.
58 Sun Blade X6270 Server Module Installation Guide • December 2009 Conf igure the Pr einstalled Solaris 10 Operating System Note – Before you perform this pr ocedure, you need to set up the service pr ocessor . If you have not done so, see Chapter 4 .
Chapter 5 Configuring the Preinstalled Solaris 10 Operating System 59 3. V erify that the communication properties of the service processor are set to the defaults. For example: Note – If the speed is anything other than 9600, change it using this command: -> set /SP/serial/host pendingspeed=9600 commitpending=true 4.
60 Sun Blade X6270 Server Module Installation Guide • December 2009 ▼ (Optional) Redir ect the Console Output to the V ideo Port The server module’s console is automatically directed to the serial port. GRUB, the open source boot loader , is the default boot loader in the Solaris OS for x86-based or x64-based systems.
Chapter 5 Configuring the Preinstalled Solaris 10 Operating System 61 Conf iguring X6270 Server Module RAID Drives After you configur e the Solaris OS, you might need to configure the RAID drives. RAID Drive Overview The Sun Blade X6270 Server Module has two optional RAID expansion module (REM) cards.
62 Sun Blade X6270 Server Module Installation Guide • December 2009 RAID Drive Options T ABLE 5-3 shows the RAID drive options. T ABLE 5-3 RAID Drive Options REM Card Drives Supported RAID Configura.
Chapter 5 Configuring the Preinstalled Solaris 10 Operating System 63 Mirr oring the Preinstalled Solaris OS W ith LSI RAID If you choose the preinstalled Solaris OS and want to make the OS part of a RAID set, and if you are using the LSI REM card only , perform the following procedure to update the preinstalled Solaris OS to a mirror ed RAID set.
64 Sun Blade X6270 Server Module Installation Guide • December 2009 Mirr oring the Preinstalled Solaris OS with Sun StorageT ek REM Car d The Sun StorageT ek REM card enables you to choose from many RAID configurations. How you conf igure your system depends on your system requir ements and the available hard disk drives in the system.
Chapter 5 Configuring the Preinstalled Solaris 10 Operating System 65 8. Click the screen to activate the Managed Systems List. 9. Double-click the local machine (it is displayed by IP Address of the Primary ENET connection). A prompt appears. 10. At the prompt, log in as root, using the OS password that was assigned during Solaris installation.
66 Sun Blade X6270 Server Module Installation Guide • December 2009 Solaris 10 Operating System User Information This section provides pointers to information about the Solaris 10 Operating System. Solaris 10 User Documentation Y ou can access the various collections of the Solaris 10 OS user documentation at: http://docs.
Chapter 5 Configuring the Preinstalled Solaris 10 Operating System 67 Sun Java Enterprise System Sun Java Enterprise System (Java ES) is a set of software components that provide services needed to support enterprise-strength applications distributed acr oss a network or Internet environment.
68 Sun Blade X6270 Server Module Installation Guide • December 2009.
69 CHAPTER 6 Conf iguring the Preinstalled OpenSolaris Operating System This chapter explains the steps for configuring the OpenSolaris TM Operating System (OS) that is preinstalled on the har d disk drive, if order ed. The preinstalled OpenSolaris version is OpenSolaris 2009.
70 Sun Blade X6270 Server Module Installation Guide • December 2009 Befor e Y ou Begin Before you begin conf iguring the preinstalled OpenSolaris OS, do the following: ■ Configur e an IP address for the server SP . For details, see “Conf iguring an IP Address” on page 49 .
Chapter 6 Configuring the Preinstalled OpenSolaris Operating System 71 T ABLE 6-1 W orksheet for OpenSolaris Configuration Information f or Installation Description or Example Y our Ans wers: Defaults (*) Language Select from the list of available languages for the OpenSolaris software.
72 Sun Blade X6270 Server Module Installation Guide • December 2009 Name service Name service If applicable, which name service should this system use? • NIS+ • NIS • DNS • LDAP • None* Domain name Provide the name of the domain in which the system resides.
Chapter 6 Configuring the Preinstalled OpenSolaris Operating System 73 Default route Do you want to specify a default route IP address, or let the OpenSolaris installation program find one? The default route pr ovides a bridge that forwards traff ic between two physical networks.
74 Sun Blade X6270 Server Module Installation Guide • December 2009 Conf iguring the Preinstalled OpenSolaris Operating System Note – Before you perform this pr ocedure, you need to set up the service pr ocessor . If you have not done so, see “Setting Up ILOM” on page 45 .
Chapter 6 Configuring the Preinstalled OpenSolaris Operating System 75 2. V erify that the communication properties of the service processor are set to the defaults. For example: Note – If the speed is anything other than 9600, change it using this command: -> set /SP/serial/host pendingspeed=9600 commitpending=true 3.
76 Sun Blade X6270 Server Module Installation Guide • December 2009 Start -> Programs -> Accessories -> Communications -> Hyperterminal ■ From a Linux client: T ype the appropriate command to start a terminal session. For example, to start a terminal session on a Linux console, you could launch Minicom.
Chapter 6 Configuring the Preinstalled OpenSolaris Operating System 77 3. Use the information gathered in “Installation W orksheet” on page 70 to help you enter the system and network information as you are prompted.
78 Sun Blade X6270 Server Module Installation Guide • December 2009 FIGURE 6-1 OpenSolaris GRUB Menu Screen 3. T o display output to the video port, choose this option: OpenSolaris 2009.
Chapter 6 Configuring the Preinstalled OpenSolaris Operating System 79 Getting Started on OpenSolaris For information on getting started on OpenSolaris, click the Start Here icon on the OpenSolaris Desktop (see FIGURE 6-2 ).
80 Sun Blade X6270 Server Module Installation Guide • December 2009 Conf iguring Server RAID Drives After you configur e the OpenSolaris OS, you might need to configure the RAID drives. RAID Drive Overview The Sun Blade X6270 Server Module Servers have two optional host bus adapter (HBA) cards.
Chapter 6 Configuring the Preinstalled OpenSolaris Operating System 81 RAID Drive Options T ABLE 6-3 lists the RAID drive options. T ABLE 6-3 RAID Drive Options HBA Car d Drives Supported RAID Configu.
82 Sun Blade X6270 Server Module Installation Guide • December 2009 Mirr oring the Preinstalled OpenSolaris OS W ith LSI RAID The OpenSolaris OS supports hardware RAID and cannot be installed on an existing array if one has been created.
Chapter 6 Configuring the Preinstalled OpenSolaris Operating System 83 10. Press Esc to exit the Conf iguration utility . 1 1. Reboot the OpenSolaris OS. Mirr oring the Preinstalled OpenSolaris OS W ith Sun StorageT ek HBA Car d The Sun StorageT ek host bus adapter (HBA) card enables you to choose from many RAID configurations.
84 Sun Blade X6270 Server Module Installation Guide • December 2009 7. T o run the application, type: sh /opt/StorMan/StorMan.sh A split screen appears. 8. Click the screen to activate the Managed Systems List. 9. Double-click the local machine (it is displayed by IP Address of the Primary ENET connection).
Chapter 6 Configuring the Preinstalled OpenSolaris Operating System 85 OpenSolaris Operating System User Information This section provides pointers to information about the OpenSolaris Operating System. ■ OpenSolaris User Documentation–Y ou can access the various collections of the OpenSolaris OS user documentation at: http://opensolaris.
86 Sun Blade X6270 Server Module Installation Guide • December 2009 Download OpenSolaris Operating System Y ou can download software for the OpenSolaris OS from the following sites: T o download the OpenSolaris operating system, go to: http://opensolaris.
87 Index A attaching dongle cable, 41 B blade server modules, configuring IP addresses initializing through static assignment, 51 C CPUs installation requir ement, 2 0 D DA T A RAID set, 8 3 default .
88 Sun Blade X6270 Server Module Installation Guide • December 2009 training options, 85 OpenSolaris preinstalled OS configuring non-default RAID configuration, 80 configuring the preinstalled OS.
Een belangrijk punt na aankoop van elk apparaat Sun Microsystems X6270 (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 Sun Microsystems X6270 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 Sun Microsystems X6270 vinden. Op dit manier kan je controleren of het apparaat aan jouw behoeften voldoet. Op de volgende pagina's van de handleiding Sun Microsystems X6270 leer je over alle kenmerken van het product en krijg je informatie over de werking. De informatie die je over Sun Microsystems X6270 krijgt, zal je zeker helpen om een besluit over de aankoop te nemen.
In een situatie waarin je al een beziter van Sun Microsystems X6270 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 Sun Microsystems X6270 kunnen verkorten.
Maar de belangrijkste taak van de handleiding is om de gebruiker bij het oplossen van problemen te helpen met Sun Microsystems X6270 . 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.
