Manuale d’uso / di manutenzione del prodotto M1000E del fabbricante Dell
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Dell PowerEdge M1000e Enclosure Owner's Manual Regulatory Model: BMX01.
Notes, Cautions, and Warnings NOTE: A NOTE indicates important information that helps you make better use of your computer. CAUTION: A CAUTION indicates either potential damage to hardware or loss of data and tells you how to avoid the problem. WARNING: A WARNING indicates a potential for property damage, personal injury, or death.
Contents 1 About Your System...................................................................................................................... 7 System Overview ......................................................................................
Tiering The Avocent iKVM Switch From An Analog KVM Switch ....................................................................32 Configuring The Analog Switch ............................................................................................
Dell 8/4 Gbps FC SAN Module .......................................................................................................................... 60 Brocade M5424 FC8 I/O Module ....................................................................
5 Troubleshooting The Enclosure.............................................................................................. 93 Safety First—For You and Your System ...................................................................................
1 About Your System System Overview Your system can include up to 16 half-height blades (server modules), eight full-height blades, eight sleeves with quarter-height blades, or a mix of the three blade types.
Figure 2. Blade Numbering – Full Height Blades Figure 3. Blade Numbering – Quarter Height Blades 8.
Figure 4. Blade Numbering – Mixed Full-Height, Half-Height, and Quarter-Height Blades System Control-Panel Features Figure 5. Control-Panel Features 1.
5. system power indicator Control Panel Features Description USB ports for keyboard and mouse Icon Description USB port 1 connects to the mouse and USB port 2 connects to the keyboard. NOTE: The USB ports are functional if an optional iKVM module is installed and front panel ports are enabled (default setting) in the CMC interface.
Figure 6. LCD Display 1. LCD screen 2. scroll buttons (4) 3. selection ("check") button LCD Module Features The primary function of the LCD module is to provide real-time information on the health and status of the modules in the enclosure.
Using The LCD Module Menus Key Action Left and right arrows Move between screens. Up or down arrow Move to the previous or next option on a screen. Center button Select and save an item and move to the next screen. Main Menu The Main Menu options include links to the LCD Setup Menu , Server Menu , and Enclosure Menu .
4. Configure the CMC network settings for your network environment: – Network speed – Duplex mode – Network mode (DHCP or static) – Static IP address, subnet mask, and gateway values (if static mode was selected) – DNS settings 5. If required, configure the iDRAC network settings.
Figure 8. Back-Panel Module Bay Numbering 1. CMC 1 (primary CMC module) 2. A1 B1 C1 (left I/O modules) 3. iKVM (iKVM module) 4. C2 B2 A2 (right I/O modules) 5. CMC 2 (secondary CMC module) Power Supply Indicators NOTE: The AC power supplies must be connected to a Power Distribution Unit (PDU), not directly to an electrical outlet.
Figure 9. Power Supply Indicators 1. DC power output indicator 2. power supply fault indicator 3. AC power indicator The power supply indicators provide the following information: Indicator Description DC power output indicator Icon Description Green indicates that the power supply is operational and providing DC power to the system.
Fan Module Indicators Figure 10. Fan Module Indicators 1. fan power indicator 2. fan fault indicator The indicators provide the following information: Indicator Description Fan power indicator Solid Green The fan is receiving DC power and working properly.
Avocent iKVM Analog Switch Module (Optional) Figure 11. Avocent iKVM Switch Module 1. status/identification indicator 2. power indicator 3. link indicator CAUTION: Do not connect the ACI port to a LAN device such as a network hub. Doing so may result in equipment damage.
Module Indicator Description Video connector Allows a monitor to be connected to the system. ACI port Allows connection of one or more servers to a Dell console switch with an Analog Rack Interface (ARI) port, such as an external digital or analog switch.
CMC Module Figure 12. CMC Module Features 1 Ethernet connector Gb1 2 Ethernet connector STK ("stack") - used for daisy- chaining CMCs in separate enclosures 3 link indicator 4 activity indic.
– Provides comprehensive enclosure inventory and status/error reporting. • CMC fail-safe mode. For more information, see CMC Fail-Safe Mode. • The CMC provides a mechanism for centralized config.
Condition Description CMC error detection and correction Chassis management resumes after the CMC resets or chassis fails over to the standby CMC. NOTE: You can configure the enclosure with a single CMC or with redundant CMCs.
Figure 13. CMC Daisy-Chaining 1. management network 2. secondary CMC 3. primary CMC System Messages System messages related to the blades in the enclosure may appear on the monitor screen to notify you of a possible problem with a blade.
• The blade Owner's Manual provides information about the blade features and describes how to troubleshoot the blade and install or replace the blade's components. • The Dell CMC User’s Guide provides information on installing, configuring, and using the CMC.
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2 Initial System Configuration Before You Begin CAUTION: The enclosure power supplies must be connected to a Type B or permanently-connected PDU and not directly to an electrical outlet. The AC power supplies require a 100 V to 120 V or 200 V to 240 V power source.
If toggled to use a static address, the CMC IP address defaults to the standard IP address settings of 192.168.0.120, 255.255.255.0, and gateway of 192.
• Serial connection, using an optional null modem cable (115200 bps, 8 data bits, no parity, 1 stop bit, and no flow control). Once you have established a connection to the CMC, you can complete the initial CMC network configuration. 1. Log in to the CMC.
– CMC user name: <user name> – Active Directory user name: <domain><user name> – LDAP user name: <user name> NOTE: This field is case sensitive. 4. In the Password field, type your CMC user password or Active Directory user password.
3. Click Setup → Deploy . 4. Select the protocol for the iDRAC setting (IPv4 and/or IPv6). 5. Under Enable Lan , select the check box next to the server to enable LAN for iDRAC . 6. Under Enable IPMI over LAN , select or clear the check box next to the server to enable or disable IPMI over LAN.
NOTE: In a redundant CMC configuration, care must be taken to update CMC firmware on both modules. Failure to do so may cause unexpected behavior during a CMC failover or failback.
Updating The CMC Firmware Using RACADM 1. Open a CMC command line console and log in. 2. Type: racadm fwupdate -g -u - a <TFTP server IP address> -d <filepath> -m <cmc- active|cmc-standby> For complete instructions on how to configure and operate the CMC module, see the latest CMC User's Guide at support.
Tiering The Avocent iKVM Switch From An Analog KVM Switch The Avocent iKVM switch can be tiered from analog KVM switches such as the Dell 2160AS and 180AS, as well as many Avocent analog KVM switches. Many switches may be tiered without the need for a SIP.
NOTE: In addition to the steps outlined above, some external analog switches may require you to perform additional steps to ensure that the iKVM switch blades are displayed in the external analog switch OSCAR. For more information, see the external analog switch documentation.
FlexAddress The FlexAddress feature allows server modules to replace the factory assigned World Wide Name and Media Access Control (WWN/MAC) network IDs with WWN/MAC IDs provided by the chassis. FlexAddress is delivered on a Secure Digital (SD) card that must be inserted into the CMC to provide the chassis-assigned WWN/MAC IDs.
3 Configuring The I/O Modules Network Information You can configure your I/O switch modules using: • CMC web-based interface. NOTE: The default IP address for the CMC is 192.168.0.120. • CMC CLI using serial console redirection. • Direct access to the I/O module serial port (if supported).
Fabric B Fabric B is a 1 to 40 Gb/sec redundant fabric, supporting I/O module slots B1 and B2. Fabric B currently supports 1 Gb or 10 Gb Ethernet, DDR/QDR Infiniband, and 4 Gbps or 8 Gbps fibre channel modules. Additional fabric types may be supported in the future.
IOM Slot A1 IOM Slot A2 NIC3 and NIC4 (Enabled/ Disabled) Port Auto-Disablement Dual Port Dual Port Disabled Active Dual Port Quad or Greater Port Enabled Inactive Quad or Greater Port Empty Enabled I.
Fabric A Fabric B Mezzanine Card Fabric C Mezzanine Card I/O Bay A1, A2 I/O Bay B1, B2 I/O Bay C1, C2 or pass- through module or pass- through module Standard Integrated LOM None Infiniband mezzanine .
Fabric A Fabric B Mezzanine Card Fabric C Mezzanine Card I/O Bay A1, A2 I/O Bay B1, B2 I/O Bay C1, C2 Standard Integrated LOM Fibre channel mezzanine card Ethernet mezzanine card Ethernet switch modul.
NOTE: Even though PowerEdge M610x is a full blade system, only two mezzanine card slots (MEZZ1_FAB_C1 and MEZZ2_FAB_B1) in the expansion bay are available for use.
Table 4. I/O Module Port Assignments - Full-Height Blades (not applicable for PowerEdge M610x) Blade 1 I/O Module B1 C1 C2 B2 Mezz1_Fab_C Port 1 Port 1 Mezz2_Fab_B Port 1 Port 1 Mezz3_Fab_C Port 9 Por.
Blade 6 I/O Module B1 C1 C2 B2 Mezz1_Fab_C Port 6 Port 6 Mezz2_Fab_B Port 6 Port 6 Mezz3_Fab_C Port 14 Port 14 Mezz4_Fab_B Port 14 Port 14 Blade 7 I/O Module B1 C1 C2 B2 Mezz1_Fab_C Port 7 Port 7 Mezz.
Figure 15. Example of Full-Height Blade Port Mapping – Blade 3 (not applicable for PowerEdge M610x) Quad-Port Mezzanine Cards The following table illustrates the I/O module port mapping for full-height blades with quad-port mezzanine cards.
Blade n and Blade (n + 8) NOTE: n denotes a variable value from 1 to 8. I/O Module B1 C1 C2 B2 Mezz_FAB_B_Blade n_Port3 Port (n+16) Mezz_FAB_B_Blade n_Port4 Port (n+16) Mezz_FAB_C_Blade n_Port1 Port n.
Table 6. Example of I/O Module Port Assignments - PowerEdge M610x Blade 1 Blade 1 I/O Module A1 B1 C1 C2 B2 A2 Mezzanine Card C (port 1 and port 2) Port 9 Port 9 Mezzanine Card C (port 3 and port 4) P.
Table 7. Example of I/O Module Port Assignments - Half-Height Blade 1 Blade 1 I/O Module A1 B1 C1 C2 B2 A2 Integrated NIC Port 1 Port 1 Mezzanine Card C Port 1 Port 1 Mezzanine Card B Port 1 Port 1 The following figure shows the port connections for a half-height blade in bay 1 with two mezzanine cards.
NOTE: For a detailed mapping of each PowerEdge system, see Quadport Capable Hardware For the M1000e Modular Chassis at support.dell.com/manuals . Table 8.
3. Select the Setup tab. The Configuring I/O Modules Network Settings page is displayed. 4. Configure the switch for integration into your network. – Select DHCP Mode Enabled if your network uses a DHCP server to assign IP addresses. – If your network uses static IP addressing, enter an IP address, subnet mask and gateway.
5. SAN I/O module status indicator 6. serial port (RJ-45 connector) Cisco Nexus B22 Fabric Extender Module The Cisco Nexus B22 Fabric Extender module acts as a remote line card for a parent Cisco Nexus switch. This module is an extension of the parent Cisco Nexus switch fabric.
• Thirty-two 1/10-Gigabit Ethernet internal ports-each port can operate in either 1 GbE or 10 GbE mode. • An internal Ethernet interface for switch management. • Two fixed 40 GbE ports on the base module. These ports operate in 4 x 10 GbE mode with breakout cables and support up to eight 10 GbE uplink ports.
• Thirty two 1 GbE or 10 GbE internal ports — each port can operate in either 1 GbE or 10 GbE mode. • Two native 40 GbE fixed ports on the base module for uplink connections. These ports can be used with 4 x 10G breakout cables to operate as 10 GbE uplink ports.
ports on the front panel and 16 internal Infiniband ports. This Infiniband switch module is hot-swappable and may be installed in Fabrics B or C. Figure 21. Mellanox M4001F/M4001Q/M4001T Infiniband Switch Module 1. Infiniband QSFP ports (16) 2. LED status/module status indicators 3.
Figure 22. Dell PowerConnect KR 8024-k Switch 1. SFP+ ports (4) 2. console management connector 3. status/identification indicator 4. power indicator 5.
Figure 23. Dell PowerConnect M8428-k 10 Gb Converged Network Switch 1. LED status indicators (12) 2. serial port (RJ-45 connector) 3. module status indicator 4. diagnostic status indicator 5. power indicator 6. 8 Gb fibre channel ports (ports 25–27 and port 0) 7.
Figure 24. Mellanox M2401G DDR Infiniband Switch Module 1. Infiniband ports (8) 2. port link status indicators (8) 3. port activity indicators (8) 4. module diagnostic power indicator 5. module status indicator Mellanox M3601Q QDR Infiniband Switch I/O Module The Mellanox M3601Q QDR Infiniband switch I/O module includes 32 4x QDR Infiniband ports.
Figure 25. Mellanox M3601Q QDR Infiniband Switch I/O Module 1. Infiniband ports (16) 2. port link status indicators (16) 3. port activity indicators (16) 4.
Figure 26. Cisco Catalyst Ethernet Switch Module Features 1. Stackwise Plus connectors (not enabled in CBS 3032) 2. 10/100/1000 Mb Ethernet connectors (4) 3. option bays (2) 4. Cisco status indicators 5. mode button 6. console port for switch management 7.
Figure 27. PowerConnect M6348 1 Gb Ethernet Switch I/O Module Features 1. standard 10/100/1000 Mb Ethernet connectors (16) 2. SFP+ connectors (2) 3. CX4 stacking connectors (2) 4.
Figure 28. PowerConnect M6220 Ethernet Switch I/O Module 1. optional modules (2) (dual 10 Gb Ethernet uplink module shown) 2. standard 10/100/1000 Mb Ethernet connectors (4) 3.
Figure 29. PowerConnect M8024 10 Gb Ethernet Switch I/O Module 1. optional module with four SFP+ ports 2. optional module with three CX4 ports 3. serial connector for optional USB type-A form- factor cable 4.
Figure 30. Dell 8/4 Gbps FC SAN Module 1. fibre channel ports (8) 2. fibre channel port status indicators (8) 3. fibre channel port speed indicators (8) 4.
Figure 31. Brocade M5424 FC8 I/O Module 1. fibre channel ports (8) 2. fibre channel port status indicators (8) 3. fibre channel port speed indicators (8) 4.
Indicator Status Amber blinking rapidly Error or fault with port Fibre channel port speed indicator Indicator Status Off 2 Gb link established Green on 4 Gb link established Amber on 8 Gb link establi.
Figure 32. 4 Gbps Fibre Channel Pass-Through Module 1. SFP fibre channel connectors (16) 2. fibre channel green/amber indicators (two per port) 3. power indicator 4.
Slow green blinking, amber off: No link established Slow green blinking, slow amber blinking: Offline for firmware download Fibre Channel Port LEDs with Qlogic Mezzanine Card Installed Green off, ambe.
1. SFP+ ports (16) 2. green/amber indicators (two per port) 3. status/identification indicator 4. power indicator Dell 10 Gb Ethernet Pass-Through Module II The Dell 10 Gb Ethernet pass-through module.
NOTE: To ensure proper functionality, use only the SFP transceivers provided with this module. Figure 35. 10/100/1000 Mb Ethernet Pass-Through I/O Module 1. activity indicators (16) 2. link indicators (16) 3. RJ-45 Ethernet connectors (16) 4. power indicator 5.
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4 Installing Enclosure Components NOTE: To ensure proper operation and cooling, all bays in the enclosure must be populated at all times with either a module or with a blank.
Figure 36. Removing and Installing a Half-Height Blade 1. blade handle 2. release button 3. blade 4. guide rail on enclosure 5. guide rail on blade (or blade blank) Figure 37.
3. blade 4. guide rail on enclosure 5. guide rail on blade (or blade blank) Installing A Blade 1. If you are installing a new blade, remove the plastic cover from the I/O connector(s) and save for future use. 2. Orient the blade so that the blade handle is on the left side of the blade.
Removing An AC Power Supply CAUTION: Many repairs may only be done by a certified service technician. You should only perform troubleshooting and simple repairs as authorized in your product documentation, or as directed by the online or telephone service and support team.
1. power supply 2. retention clip tether 3. notch in power supply handle 4. retention clip 5. power cable Figure 39. Removing and Installing a Power Supply Module 1. power supply 2. handle 3. release button Installing An AC Power Supply CAUTION: Many repairs may only be done by a certified service technician.
DC Power Supply Modules A 2700 W DC power supply module requires –(48–60) V DC input from a DC power source. Wiring Instructions For A DC Power Supply This document describes the requirements and wiring instructions for a –48 V DC power wire and safety ground wire for systems equipped with a –48 V DC supply.
CAUTION: When stranded wiring is required, use approved wiring termination, such as closed-loop or spade-type with upturned lugs. These terminations are the appropriate size for the wires and must be double crimped, one on the conductor and one on the insulation.
Figure 40. Assembling and Connecting the Safety Ground Wire 1. grounding post 2. safety ground wire terminal 3. locking washer 4. #5/16 nut Assembling The DC Input Power Wires And DC Power Connector WARNING: For equipment using –(48–60) V DC power supplies, a qualified electrician must perform all connections to DC power and to safety grounds.
WARNING: Reversing polarity when connecting DC power wires can permanently damage the power supply or the system. 2. Insert the copper ends into the mating connectors and tighten the captive screws at the top of the mating connector using a #2 Phillips screwdriver.
Removing A DC Power Supply WARNING: For equipment using –(48–60) V DC power supplies, a qualified electrician must perform all connections to DC power and to safety grounds. Do not attempt connecting to DC power or installing grounds yourself. All electrical wiring must comply with applicable local or national codes and practices.
Figure 42. Removing and Installing a DC Power Supply 1. connector 2. DC power supply 3. release latch 4. power supply handle Installing A DC Power Supply WARNING: For equipment using –(48–60) V DC power supplies, a qualified electrician must perform all connections to DC power and to safety grounds.
3. Slide the new power supply into the chassis until the power supply is fully seated and the release latch snaps into place. NOTE: If you unlatched the cable management arm, re-latch it. For information about the cable management arm, see the system’s rack documentation.
Figure 43. Removing and Installing A Fan Module 1. fan module 2. release button Installing A Fan Module CAUTION: Many repairs may only be done by a certified service technician. You should only perform troubleshooting and simple repairs as authorized in your product documentation, or as directed by the online or telephone service and support team.
4. Install the I/O connector cover. Figure 44. Removing and Installing a CMC Module or iKVM Module (CMC Module Shown) 1. I/O connector cover 2. release latch 3. release lever Installing A CMC Module CAUTION: Many repairs may only be done by a certified service technician.
3. Reinstall the CMC module and reattach any cables that were disconnected. On a single CMC system, the SD card activates automatically. For redundant CMC module systems, initiate a changeover to make the passive module active using the following steps: a.
4. Install the I/O connector cover. Figure 46. Removing and Installing a CMC Module or iKVM Module (CMC Module Shown) 1. I/O connector cover 2. release latch 3. release lever Installing An iKVM Module CAUTION: Many repairs may only be done by a certified service technician.
Removing An I/O Module CAUTION: Many repairs may only be done by a certified service technician. You should only perform troubleshooting and simple repairs as authorized in your product documentation, or as directed by the online or telephone service and support team.
NOTE: The I/O module must be installed in the appropriate I/O bay. 1. Unpack the I/O module and prepare it for installation. For instructions, see the documentation that accompanied the I/O module. 2. Remove the I/O connector cover from the back of the module.
Figure 48. Removing and Installing the Bezel 1. bezel 2. enclosure 3. Torx T20 screws (6) 4. Torx T8 screws (2) Installing The Enclosure Bezel CAUTION: Many repairs may only be done by a certified service technician.
NOTE: A Torx T20 driver is required for this procedure. 1. Press the enclosure power switch to turn off the system. CAUTION: To avoid damaging the modules, you must remove all the modules installed in the enclosure before removing the front module cage assembly and midplane.
2. enclosure 3. Torx T20 screws (4) Figure 50. Removing and Installing the Midplane 1. front module cage assembly 2. midplane 3. Torx T15 screws (4) Installing The Midplane And Front Module Cage Assembly CAUTION: Many repairs may only be done by a certified service technician.
f) All the blades Enclosure Control Panel Assembly Removing The Control Panel CAUTION: Many repairs may only be done by a certified service technician. You should only perform troubleshooting and simple repairs as authorized in your product documentation, or as directed by the online or telephone service and support team.
Installing The Control Panel CAUTION: Many repairs may only be done by a certified service technician. You should only perform troubleshooting and simple repairs as authorized in your product documentation, or as directed by the online or telephone service and support team.
Figure 52. Removing and Installing the LCD Module 1. cable cover 2. LCD module 3. ribbon cable 4. hinges (2) 5. Torx T8 screws (2) Installing The LCD Module CAUTION: Many repairs may only be done by a certified service technician.
5 Troubleshooting The Enclosure NOTE: For troubleshooting information on the blades in your enclosure, see the blade documentation at support.dell.com/manuals . Safety First—For You and Your System CAUTION: Many repairs may only be done by a certified service technician.
Troubleshooting A Wet Enclosure CAUTION: Many repairs may only be done by a certified service technician. You should only perform troubleshooting and simple repairs as authorized in your product documentation, or as directed by the online or telephone service and support team.
NOTE: After installing a new power supply, allow several seconds for the system to recognize the power supply and determine whether it is working properly. The power supply DC power indicator turns green if the power supply is functioning properly. 3.
3. Using the "17th blade" feature of the CMC, use the Connect Switch-X command to verify that the switch is fully booted, and verify the switch’s firmware revision and IP address. 4. Verify that the switch module has a valid IP address for the subnet.
6 Technical Specifications Enclosure Specifications Power Supply Module AC/DC power supply (per power supply module) (2700 W) Wattage 2700 W Connector IEC C20 Heat dissipation 1205 BTU/hr (maximum) Ma.
Power Supply Module Maximum inrush current Under typical input voltage conditions and over the entire system ambient operating range, the inrush current may reach 120 A per power supply for 10 ms or less. System voltage requirements 75 A, 48 V DC to 60 V DC Optional Avocent iKVM Module Externally accessible connectors USB Two 4-pin, USB 2.
Brocade M6505 16 Gbps FC SAN I/O Module Externally accessible connectors Eight physical FC8 ports that support 4/8/16 Gbps fibre channel connections Serial Port RJ-45 Dell PowerEdge M I/O Aggregator Switch Module Externally accessible connectors Serial 4-pin, USB 2.
Brocade FC8 Fibre Channel Switch Module Externally accessible connectors Eight physical FC8 ports (four enabled by default, upgradeable to eight) that support 2/4/8 Gbps fibre channel connections Seri.
Environmental NOTE: When operating in the expanded temperature range, system performance may be impacted. NOTE: When operating in the expanded temperature range, ambient temperature warnings may be reported on the LCD and in the System Event Log. < 10% of annual operating hours 5 °C to 40 °C at 5% to 85% RH with 26 °C dew point.
Environmental – Dell PowerConnect M8024 10 Gb Ethernet switch I/O module Storage Temperature –40 °C to 65 °C (–40 °F to 149 °F) with a maximum temperature gradation of 20 °C per hour.
7 Getting Help Contacting Dell NOTE: If you do not have an active Internet connection, you can find contact information on your purchase invoice, packing slip, bill, or Dell product catalog. Dell provides several online and telephone-based support and service options.
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 Dell M1000E 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 Dell M1000E - in questo modo è possibile verificare se l’apparecchio soddisfa le tue esigenze. Esplorando le pagine segenti del manuali d’uso Dell M1000E imparerai tutte le caratteristiche del prodotto e le informazioni sul suo funzionamento. Le informazioni sul Dell M1000E ti aiuteranno sicuramente a prendere una decisione relativa all’acquisto.
In una situazione in cui hai già il Dell M1000E, 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 Dell M1000E.
Tuttavia, uno dei ruoli più importanti per l’utente svolti dal manuale d’uso è quello di aiutare a risolvere i problemi con il Dell M1000E. Quasi sempre, ci troverai Troubleshooting, cioè i guasti più frequenti e malfunzionamenti del dispositivo Dell M1000E 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.
