Manuel d'utilisation / d'entretien du produit DVS 605 du fabricant Extron electronic
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User Guide DVS 605 HDCP-Compliant Scaler (with Seamless Switching) 68-2110-01 Rev . B 05 13 SCALERS AND SIGNAL PROCESSORS DVS 605 DVS 605 AD.
Safety Instructions • English W ARNING: This symbol, , when used on the product, is intended to alert the user of the presence of uninsulated danger ous voltage within the product’ s enclosur e that may present a risk of electric shock.
FCC Class A Notice This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to part15 of the FCC rules. The ClassA limits provide r easonable protection against harmful interference when the equipment is operated in a commer cial environment.
Conventions Used in this Guide Notifications The following notifications are used in this guide: DANGER: A danger indicates a situation that will result in death or sever e injury . W ARNING: A warning indicates a situation that has the potential to result in death or severe injury .
Contents Introduction ............................................................ 1 DVS 605 Series Description ................................ 1 Licensed Third‑party Softwar e Used in the DVS 605 ...................................................
Mounting ............................................................... 90 Mounting the DVS 605 ..................................... 90 T abletop Placement ...................................... 90 UL Guidelines for Rack Mounted Devices .... 90 Rack Mounting .
Intr oduction This manual contains information about the Extron DVS 605 scalers with instructions for experienced installers on how to install, configure, and operate the equipment. In this manual the terms “DVS,” “digital video scaler ,” and “scaler” ar e used interchangeably and r efer to any DVS 605 model.
Licensed Thir d-party Software Used in the DVS 605 The DVS 605 uses various licensed third‑party softwar e during operation. T o view details about third‑party packages and associated licensing, click the License Information button on the Unit Information page of the Default web pages ( see the Unit Information Page on page 82).
Key Featur es Video Inputs • Three HDMI and two universal analog video inputs — The two universal 15‑pin HD inputs automatically detect incoming RGB, HD component video, YUVi, S‑video, or composite video signals. The DVS 605 allows for seamless switching between HDMI and analog video sources.
Audio • Audio switching — The DVS 605 A and DVS 605 AD feature audio switching for five analog stereo balanced or unbalanced inputs. • Output volume control — DVS 605 audio models pr ovide master volume control. Fixed and variable line level outputs are available, and each output can be balanced or unbalanced.
• AFL - Accu-RA TE Frame Lock — A patented technology exclusive to Extr on that eliminates image tearing caused by frame rate conversion. • Image freeze contr ol — A live image can be frozen using contr ol via USB, RS‑232 serial, Ethernet, or IR control.
• RS-232 control port — Using serial commands, the DVS 605 can be contr olled and configured via the embedded web pages, or integrated into a contr ol system. Extron products use the SIS ‑ Simple Instruction Set command pr otocol, a set of basic ASCII code commands that allow for quick and easy programming.
Rear Panel Connections This section describes how to connect cables to a DVS 605 scaler . Rear Panel Cabling The illustration below shows all the possible rear panel featur es of the audio (DVS 605 A and DVS 605 AD) and the non‑audio (DVS 605 and DVS 605 D) models.
a Power input — Connect the standard IEC power cor d from a 100 to 240 V AC, 50‑60 Hz power source into this connector . The front panel control and input selection buttons light in sequence during power ‑up.
5. While holding the connector securely against the lacing bracket, tighten the tie wrap, then remove any excess length. The LockIt bracket can also be used in a stacked formation, as shown below .
i Audio output (fixed, audio models only) — Connect audio output devices to this 5‑pole, captive screw connector for line level, balanced or unbalanced, analog ster eo.
n RS-232/IR port — For serial RS‑232 control, connect a host computer or contr ol system to the 5‑pole captive screw connector . This port is also a hard wired IR contr ol for use with an external IR controller . The default RS‑232 protocol is 9600 baud, 1 stop bit, no parity , 8 data bits, no flow control.
Operation This section of the manual discusses the operation of a DVS 605 device. T opics covered include: • Front Panel Overview • Powering Up • The DVS 605 Menu System — Configuration and Adjustments • Front Panel Lockout (Executive Modes) • Window vs.
Powering Up When applying power to the DVS 605, the unit undergoes a start‑up self testing sequence (see image below) and then the LCD displays the default display cycle. Default Display Cycle When in use but not in any menu mode, the LCD screen defaults to cycling thr ough the input/output configuration currently installed.
Menu Overview After start‑up, and when no adjustments are actively being made, the “default cycle” appears on the LCD. The screens cycle between the scr een that shows the number and video format of the active input and the current output r esolution.
Next INx FORMAT DIGITA L Rotate either to select input audio format. * NOTE: To activate the hidden menu “Edit Comms”, press and hold input 5 and Next buttons simultaneously for three seconds. To exit the Edit Comms menu press Menu. Menu ADVANCED CONFIG AUTO IMAGE Input #x OF F Rotate to turn Auto Image mode on or off.
T o return to the default cycle from within any menu, press the Menu button r epeatedly until the Exit menu appears, then press the Next button. Alternatively , allow the DVS 605 to time‑out (after 20 seconds). Submenus are accessed fr om a main menu by pressing the Next button.
Input Configuration This menu allows the user to adjust various input configuration settings such as video signal type, film mode, horizontal and vertical start position, horizontal and vertical active pixels, total pixel number , phase, and EDID settings for the selected input.
Output Configuration The output configuration menu allows selection of output resolution and r efresh rates, analog output types (RGBHV , RGBS, RGsB and Y , B‑Y , R‑Y), sync polarity , HDMI format, HDCP notification display , genlock setting, and of fset values.
When a new custom rate has been captured or uploaded, the on‑scr een display (OSD) dynamically updates with the new rate for that custom slot. For example if a custom 480p EDID is uploaded to slot C1, the LCD would read “C1: 720x480”.
HDCP Status: Inputs & Outputs Through a series of SIS commands (see “ SIS Communication and Contr ol ” starting on page 34) the DVS 605 has the ability to report HDCP status of the HDMI input signals as well as connected HDMI sink devices.
• SDI Genlock (SDI models only) — This locks the output vertical refr esh rate to the applied analog genlock input on the SDI models. In the SDI Genlock mode, the output resolution and r efresh rate of the DVS 605 must be set to exactly match the applied analog genlock signal to ensure a true genlock to the applied SDI Genlock signal.
Audio Configuration (All Models) Audio Configuration allows the user to set volume level (0 dB to ‑100 dB range), turn audio mute on or off, adjust input gain and attenuation levels (–53 dB to +9 dB range) for the current analog input.
Advanced Configuration The following flowchart provides an overview of the Advanced Configuration submenu The options are Auto‑Image (on or of f), aspect ratio (fill or follow), auto memory (on or off), overscan (none, 2.
Auto-Image Use either Adjust knob ( [ { ) to turn Auto‑Image on or off (default). When enabled and a new input frequency is detected, the DVS first applies an existing Auto Memory for the signal (if Auto Memory is enabled), or , if no entry exists, performs an automatic Auto‑Image on the new signal.
Overscan Use the horizontal Adjust knob ( [ ) to select input video type (RGB, YUV , RGBcvS, S‑video, composite, or HDMI), and the vertical Adjust knob ( { ) to select the overscan mode (None, 2.5% or 5.0%). Overscan is specific to each input signal type.
T emperature This is a read‑only menu that gives the internal temperature (degr ees C and F) of the connected device. No adjustments can be made. Factory Reset This menu allows the user to reset the device to the factory default settings. Press and hold the Auto‑Image button until the display changes.
Fr ont Panel Lockout (Executive Modes) T o prevent accidental changes to settings, press the Menu and Next buttons simultaneously for 2 seconds to enable front panel lockout mode (executive mode 2). The menu system returns to the default menu within 10 seconds.
W indow vs. Image Size Position — An Overview The DVS 605 provides users the ability to adjust a window size/position and the image’ s (the content) size/position independently with regards to the output raster .
Pictur e-in-picture (PIP) Mode The DVS 605 can display two images on the screen simultaneously . The PIP window can be activated using front panel PIP button, discr ete SIS commands, PIP presets, or the device embedded web pages.
PIP Presets A PIP preset contains settings for the size and position of PIP window and which main and PIP inputs that were active when the pr eset was saved. PIP presets ar e used to quickly recall a gr oup of settings that relate to the main and PIP windows and content settings.
Other DVS 605 Operating Featur es Screen Save Screen Save mode allows the user to configur e what will be displayed on the video output, and for what duration, when the selected DVS 605 input loses an active video signal. By default, the DVS 605 will continue to output muted (black) video and sync indefinitely .
Audio Format Audio Source Analog Input Digital Inputs EDID None Muted Ye s Ye s No CEA Analog 5‑Pole Captive Ye s Ye s No CEA LPCM-2Ch Embedded Digital No Ye s LPCM‑2Ch CEA Multi-Ch Embedded Digit.
Resetting the Unit There ar e three unit r eset modes (numbered 1, 4, and 5), These are available by pr essing the recessed Reset button on the r ear panel with a pointed stylus, pen, or similar item to access it. See the following table for a summary of the reset modes.
SIS Communication and Contr ol The DVS 605 can be configured and contr olled via a host computer or other device (such as a control system) attached to the r ear panel RS-232 connector or the LAN port or the front panel USB port. Contr ol is made using the Extron Simple Instruction Set (SIS) of commands, or the DVS default web pages.
Password Information The ] Password: prompt r equires a passwor d (administrator level or user level) followed by a carriage return. The prompt is r epeated if the correct passwor d is not entered. If the correct passwor d is entered, the unit r esponds with ] Login Administrator ] or ] Login User ] , depending on password enter ed.
Symbol Definitions •=Space ] = Carriage return with line feed ¦ or } = Carriage return with no line feed E or W = Escape 14, 24, 28 = Superscripts indicate the error message displayed if the command is enter ed incorrectly or with invalid parameters.
X1& = Horizontal and vertical size, 0 to 11000 X1* = Image/window number: 1 = main window , 2 = PIP window X1( = Scaler resolution/EDID emulation: 0 = Automatic: match current output r esolution (.
X2! = Analog output polarity: 0 = H-/V - (default) 1 = H-/V+ 2 = H+/V - 3 = H+/V+ X2@ = Analog output sync format: 0 = RGBHV (default) 1 = RGBS 2 = RGsB 3 = Y , R-Y , B-Y bi-level 4 = Y , R-Y , B-Y tr.
X3^ = HDMI output format: 0 = Auto (based on sink EDID), default 1 = DVI 2 = HDMI 444 RGB (0-255, audio, InfoFrames) 3 = HDMI 444 YUV “FULL” (0-255, audio, InfoFrames) 4 = HDMI 444 YUV “LIMITED.
X4& = Input signal/SDI genlock 0 = Disabled; (default) 1 = Input signal genlock enabled; locks output vertical to the selected input vertical rate 2 = SDI genlock enabled; locks output vertical to.
X12% = Connections security level: 0 = anonymous, 11 = user , 1 – 10 = extended security levels 1 thru 10 12 = Administrator X12& = The number of seconds before timeout on the IP connection: min. = 1; max. = 65000; (default = 30 = 300 seconds). If no data is received during the timeout period, the Ethernet connection is closed.
SIS Command and Response T able Command ASCII Command (host to scaler) Response (scaler to host) Additional Description Input selection Video and audio X! ! In X! • All ] Select video and audio from input X! . Video X! & In X! • RGB ] Select video from input sour ce X! .
Command ASCII Command (host to scaler) Response (scaler to host) Additional Description Input name Write input name EX! , X1$ NI } Nmi X! , X1$] Set the name X1$ for input X! . Read input name EX! NI } X1$] View input X! name X1$ . NOTE: T o clear an input name, a single space character should be entered for X1$ .
Command ASCII Command (host to scaler) Response (scaler to host) Additional Description Pixel phase (available only for RGB and YUV auto input signals) Specify a value E X! * X% PHAS } Phas X! * X%] Adjust the pixel phase to specified value X% for input X! .
Command ASCII Command (host to scaler) Response (scaler to host) Additional Description Picture Adjustments Video mute Mute all outputs to black 1B Vmt1 ] Mutes video and displays black video on all outputs. Mute all sync and video 2B Vmt2 ] Mutes sync and video on all outputs.
Command ASCII Command (host to scaler) Response (scaler to host) Additional Description Horizontal position (window) Specific value E 1* X1* * X1^ HCTR } Hctr1* X1* * X1^] Set horizontal position to X1^ for window X1* . Increment value E 1* X1* +HCTR } Hctr1* X1* * X1^] Shift window right.
Command ASCII Command (host to scaler) Response (scaler to host) Additional Description Horizontal size (image) Specific value E 2* X1* * X1& HSIZ } Hsiz2* X1* * X1&] Set horizontal sizing to X1& for image X1* . Increase width E 2* X1* +HSIZ } Hsiz2* X1* * X1&] Widen the image.
Command ASCII Command (host to scaler) Response (scaler to host) Additional Description Screen saver mode (action that takes place when no signal is detected on the selected input) Set mode E M X3) SSAV } SsavM X3)] Sets the scr een saver mode to X3) (default: 1 = black).
Command ASCII Command (host to scaler) Response (scaler to host) Additional Description Audio input format NOTES: • Selects between analog (5-pole captive screw) or digital (embedded in HDMI input) audio sour ces. • Inputs 1 and 2 X4@ can only be set to 0 or 1; attempting to set these inputs to a digital format yields an E14 response.
Command ASCII Command (host to scaler) Response (scaler to host) Additional Description Presets User presets Recall preset 1* X2# . 1Rpr X2#] Recall user pr eset X2# for selected input. Save preset 1* X2# , 1Spr X2#] Save user preset X2# for selected input.
Command ASCII Command (host to scaler) Response (scaler to host) Additional Description Advanced Conguration T est patter n Set test pattern E X2) TEST } Test X2)] Set the test patter n to X2) . View test pattern E TEST } X2)] View the current test pattern.
Command ASCII Command (host to scaler) Response (scaler to host) Additional Description Video effect Cut E 0SWEF } Swef0 ] Sets the switch to cut. Dissolve E 1SWEF } Swef1 ] Sets the switch to dissolve. View setting E SWEF } 0 ] (or 1 ] ) View setting (0 = cut, 1 = dissolve).
Command ASCII Command (host to scaler) Response (scaler to host) Additional Description HDCP input authorization (valid for HDMI inputs only) HDCP Authorized device on E E X! *1HDCP } HdcpE X! *1 ] T urn HDCP Authorized device on for input X! (default).
Command ASCII Command (host to scaler) Response (scaler to host) Additional Description Hardwir ed IR port Enable IR port (allows IR) 65*0# IRDisable0 ] Enables the hard wir ed port and allows IR control input. Disable IR port (blocks IR) 65*1# IRDisable1 ] Disables the hard wir ed port (default).
Command ASCII Command (host to scaler) Response (scaler to host) Additional Description Information request General information I/i Vid X! • Aud X! •V typ X# • Std X1) • Blk X3! • Hrt X1# • Vrt X1# • Pip X!] NOTE: Aud “ X! ” response is a “-” on the non audio model.
SIS Command and Response T able for IP Control Port Command ASCII (T elnet) (host to processor) URL Encoded (Web) (host to processor) Response (processor to host) Additional Description Ethernet data .
Command ASCII (T elnet) (host to processor) URL Encoded (Web) (host to processor) Response (processor to host) Additional Description Query updated firmware version 4Q 4Q X13! ] Use this command to find out which version of firmware has been uploaded into the pr ocessor post-factory .
Command ASCII (T elnet) (host to processor) URL Encoded (Web) (host to processor) Response (processor to host) Additional Description Set IP address 24 E X10* CI } W X10* CI | Ipi• X10*] X10* = IP addr ess (xxx.xxx.xxx.xxx). Leading zeros in each of the four fields ar e optional in setting values.
Command ASCII (T elnet) (host to processor) URL Encoded (Web) (host to processor) Response (processor to host) Additional Description NOTE: A user password cannot be assigned if an administrator passwor d does not exist. Entering a password when the DVS 605 has not been configured yields an E14 response fr om the processor .
Command ASCII (T elnet) (host to processor) URL Encoded (Web) (host to processor) Response (processor to host) Additional Description Re-map port designations Set T elnet port map 24 E {port #}MT } W{.
Using the Default W eb Pages The DVS 605 features an on‑boar d web server , displayed as a set of default web pages. These pages allow you to control and operate the DVS 605 unit via a LAN or W AN c.
T urning Off Compatibility Mode The DVS 605 default web pages do not support compatibility mode in Microsoft Internet Explorer . T o check compatibility view settings: From the Tools menu of the br owser , select Compatibility View Settings . The Compatibility View Settings dialog box opens.
Configuration Pages NOTE: From Har dware pages, click on the Configuration tab . The Configuration pages options are: • Input/Output Configuration • EDID Minder • Image Settings • PIP Settings • Audio Configuration • Preset Management • Device Settings.
Breakaway audio check box (audio models only) Select this check box to enable audio breakaway . The input buttons separate into two columns: video and audio. From the Video column, click the input button associated with the video to be used. From the Audio column, click on the input button associated with the audio to be used.
Input/Output Configuration Page — Input Configuration Panel Click on this button to open to this page. The Input Configuration panel consists of user configurable fields for each of the five inputs. These include; input naming, signal type, aspect ratio, Auto‑Image, Auto Memory , HDCP Authorized status, and film detection.
Aspect ratio Select Fill or Follow from the dr op‑down list to set the aspect ratio. • Fill — The input signal is scaled to fill the entire video output. • Follow — Follows the signal aspect ratio, with respect to the curr ent output resolution setting.
Input/Output Configuration Page — Output Configuration Panel The right panel consists of user configurable fields for video outputs. These include: output resolution, r efresh rate, signal format and sync polarity for the analog output, and signal format for the digital output.
Digital output signal format Click on the arrow and fr om the drop‑down list box select an applicable signal format. Selectable formats are: Auto (based on sink/display EDID), DVI, HDMI RGB, HDMI YUV 444 Full, HDMI YUV 444 Limited, HDMI YUV 422 Full, HDMI YUV 422 Limited.
EDID Minder Page Extron EDID Minder is an EDID management pr ocess that automatically manages the EDID information between a digital display device and one or more input sour ces. Click on this button to open the EDID Minder page. From this page an EDID data set can be assigned to any input with an Auto‑Detect, an RGB, or an HDMI/DVI input type.
Assigning EDIDs T o assign EDID to selected inputs: 1. From the inputs scr een (table of inputs) on the right, select the desired input or inputs (see figure below). 2. From the table on the left of the scr een, select an available EDID (represented by a blue, green, or yellow output display icon).
Image Settings Page From this page signal sampling and pictur e control settings can be set, user and input presets can be saved and r ecalled, and overscan settings can be applied.
Picture Contr ol This section shows the image settings for the selected input. These include brightness, contrast, color , tint, and detail, which can be adjusted and applied to that input.
Input Presets A total of 128 global input presets ar e available for the DVS 605. An input preset is a user ‑defined set of input and pictur e control settings that can be saved for each source within a system so that they can be recalled whenever the sour ce is applied.
PIP Settings Page In PIP mode, the DVS 605 can display two images on the screen simultaneously . From this page the PIP settings can be adjusted. This includes input selection, swapping between the main and PIP inputs, adjustment of the picture contr ol settings, main and PIP window position and sizing, and the saving and recalling of PIP pr esets.
PIP picture contr ols These PIP input settings include brightness, contrast, color , tint, and detail. NOTES: • Picture contr ols will not be applied if there is no input signal. Any changes made while there is no input signal will be lost when a signal is detected.
PIP presets Sixteen global PIPpresets ar e available for the DVS 605. A PIP preset contains settings for the size and position of PIP . It also contains the main and PIP inputs that were active when the preset was saved. By default the first ten PIP pr esets have settings already associated with them, but they can be overwritten.
Audio Settings Page Using this page each of the audio inputs can be configured, including setting the input format and the gain (for analog inputs). Also the audio output format can be set and adjusted. NOTE: Audio inputs 1 and 2 are disabled for DVS 605 and DVS 605 D models.
2. Click and drag the handle of the Gain slider , or click the up > and down < arrows in the field below the slider , or enter a value in the field. NOTE: Y ou can only adjust the gain and attenuation for an input that is in analog or Auto format.
Preset Management Page This Preset Management page gives access to assigned input pr esets, user presets, and PIPpresets. Each pr eset can be renamed, r ecalled or cleared. A brief description of the settings contained within each preset type is given at the top of each list.
T o clear a Preset: 1. Select the input preset, user pr eset, or PIPpreset that is to be cleared. 2. Click the Clear button located in the same section of the screen. A confirmation dialog box opens. 3. Click OK . If the preset is an input pr eset or a user preset, the pr eset is removed entir ely from the list.
HDCP Notification HDCPnotification indicates if HDCP content restrictions ar e preventing a video signal fr om passing to the output. When the Green option is selected, a green scr een with HDCP CONTENTtext is displayed on the output if the connected display device is not HDCP compliant and an HDCP encrypted input has been selected.
Auto Switch When enabled, the auto‑input switching priority can be set to either start with the highest active input or the lowest active input. See “ Auto-switching between inputs ” on page 3 for details. T o enable auto-input switching: 1. Select the Enable Auto Switch check box.
Har dware Pages Click on the Hardwar e tab to open these pages. The Hardwar e pages options are: • Unit Information • Device Name • Connection • Firmware Loader • Exec/Power Mode • Date and Time • Password • Reset Device Figure 45.
Device Name Page This page allows the user to assign or change the connected device name. Click on this button to open the page. Figure 47. Device Name Page T o assign or change the name: 1. Enter a name for the device in the name field. This may be up to 24 alphanumeric characters in length with no spaces between characters.
RS-232 Settings T o configure the RS-232 settings: 1. From the Baud Rate dr op‑down list, select the appropriate baud rate. 2. From the Stop Bits dr op‑down list, select the number of bits used to indicate a byte. 3. From the Bits dr op‑down list, select the number of data bits to transmit.
T o update the device firmware: 1. Click Browse . The Choose File to Upload dialog box opens. 2. Browse to and select the firmwar e file to upload to the device. V alid firmware files have an EFFor ESFextension. NOTE: Current firmwar e updates can be downloaded from the Firmwar e Download Center page of the Extron website.
Power Mode The low power ‑standby state disables all video input pr ocessing and all video outputs to save energy when the DVS605 is not in use. T o set the power mode: 1. Click the radio button for the desired power mode ( Full Power or Low Power - Standby State ).
Password Page This page allows the user to set an administrator and user password on the device. Click on this button to open the page. Figure 52. Passwor d Page Administrators and users can view any setting on the device. Administrators have the ability to make adjustments to any setting.
Reset Device Page This page allows the user to reset the device. Click on this button to open the page. Figure 53. Reset Device Page There ar e three r eset options available: • Reset scaler sett.
Mounting This section describes: • T abletop Mounting • Rack Mounting • Furniture Mounting Mounting the DVS 605 If the DVS 605 is to be rack mounted, it is important to mount it before cabling it. Four rubber feet are included with the unit.
Rack Mounting T o rack mount the DVS 605, tur n off or disconnect all equipment power sour ces and rack mount the DVS 605 unit using the pre‑installed brackets (see figur e below).
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Un point important après l'achat de l'appareil (ou même avant l'achat) est de lire le manuel d'utilisation. Nous devons le faire pour quelques raisons simples:
Si vous n'avez pas encore acheté Extron electronic DVS 605 c'est un bon moment pour vous familiariser avec les données de base sur le produit. Consulter d'abord les pages initiales du manuel d'utilisation, que vous trouverez ci-dessus. Vous devriez y trouver les données techniques les plus importants du Extron electronic DVS 605 - de cette manière, vous pouvez vérifier si l'équipement répond à vos besoins. Explorant les pages suivantes du manuel d'utilisation Extron electronic DVS 605, vous apprendrez toutes les caractéristiques du produit et des informations sur son fonctionnement. Les informations sur le Extron electronic DVS 605 va certainement vous aider à prendre une décision concernant l'achat.
Dans une situation où vous avez déjà le Extron electronic DVS 605, mais vous avez pas encore lu le manuel d'utilisation, vous devez le faire pour les raisons décrites ci-dessus,. Vous saurez alors si vous avez correctement utilisé les fonctions disponibles, et si vous avez commis des erreurs qui peuvent réduire la durée de vie du Extron electronic DVS 605.
Cependant, l'un des rôles les plus importants pour l'utilisateur joués par les manuels d'utilisateur est d'aider à résoudre les problèmes concernant le Extron electronic DVS 605. Presque toujours, vous y trouverez Troubleshooting, soit les pannes et les défaillances les plus fréquentes de l'apparei Extron electronic DVS 605 ainsi que les instructions sur la façon de les résoudre. Même si vous ne parvenez pas à résoudre le problème, le manuel d‘utilisation va vous montrer le chemin d'une nouvelle procédure – le contact avec le centre de service à la clientèle ou le service le plus proche.
