Manuale d’uso / di manutenzione del prodotto 747c del fabbricante Humminbird
Vai alla pagina of 96
747c and 777c 2 Oper ations Manual 747c and 777c 2 Oper ations Manual 531526-1_A 531526-1_A - 747c_&_777c2_Man_Eng.qxp 10/2/2006 1:40 AM Page 1.
ii T hank Y ou! Thank y ou for choosing Humminbir d®, America's #1 name in fishfinders. Humminbird® has built its reputa tion by designing and manuf acturing top- quality , thor oughly reliable marine equipment. Y our Humminbird® is designed for trouble-fr ee use in ev en the harshest marine en vironment.
ii How Sonar W orks 1 DualBeam PLUS™ Sonar .......................................................................................................... 3 QuadraBeam PLUS™ Sonar (with optional-purchase QuadraBeam PLUS™ transducer) ........ 4 WideSide® Sonar (with optional-purchase WideSide® transducer) .
Sonar X -Press™ Menu 34 Side (WideSide® tr ansducer: WideSide® vie w only .............................................................. 35 Sensitivity ...............................................................................................
iv Units - Distance (with Temp/Speed or GPS receiver) .............................................................. 60 Units - Speed (with Temp/Speed or GPS receiver) .................................................................. 61 User Mode ...
How Sonar W orks Sonar technology is based on sound wav es. The 700 Series™ Fishing System uses sonar to locate and define structure, bottom contour and composition, as well as depth directly belo w the transducer .
2 The sound pulses ar e transmitted at various frequencies depending on the application. V ery high frequencies (455kHz) are used f or greatest definition but the operating depth is limited. High frequencies (200kHz) are commonly used on consumer sonar and provide a good balance between depth performance and r esolution.
3 DualBeam PLUS™ Sonar Y our 700 Series™ Fishing System uses a 200/83 kHz DualBeam PLUS™ sonar system with a wide (60°) area of cov erage. DualBeam PLUS™ sonar has a narrowly f ocused 20° center beam, surrounded by a second beam of 60°, expanding your cov erage to an area equal to your depth.
4 QuadraBeam PL US™ Sonar (with optional-purchase QuadraBeam PLUS™ transducer) Y our 700 Series™ Fishing System also supports QuadraBeam PLUS™ sonar with the purchase of an additional QuadraBeam PLUS™ transducer . QuadraBeam PLUS™ sonar provides an extr emely wide 90° area of cover age.
5 WideSide® Sonar (with optional-purchase WideSide® transducer) Y our 700 Series™ Fishing System also supports WideSide® sonar with the pur chase of an additional WideSide® tr ansducer .
6 Univer sal Sonar 2 Y our 700 Series™ Fishing System supports Universal Sonar 2, a sta te-of-the- art, integrated and pr otected transducer that is built into the low er unit of Minnkota trolling motor s.
7 What’s On the Displa y The 700 Series™ F ishing System can display a variety of useful informa tion about the a Depth - water depth; can be set to alarm when the water becomes too shallow . T emperature - water surface temperatur e. Timer - Elapsed time with T emp/Speed Accessory or GPS Receiver .
8 about the area under and adjacent to y our boat, including the follo wing items: RTS® (Real T ime Sonar) Window Structure - where fish may be hiding. Thermoclines - lay ers of water with differ ent temperatures that appear at differ ent depths and different times of the year .
9 Vi ew s The vie ws available on your F ishing System are: • Sonar Vie w • Zoom Vie w • 200/83 kHz Split Sonar Vie w • Big Digits Vie w • Circular Flasher V iew • Side Beam Vie w • WideSide® V iew . Sonar V iew is the default vie w . When the VIEW key is pr essed, the display cycles through the av ailable views.
10 Sonar V iew Sonar V iew presents a historical log of sonar r eturns. Depth is always displayed. Readouts f or temperature and speed ar e automatically display ed if the appropriate accessory is connected.
11 Understanding Sonar History It is important to understand the significance of the display . T he display does NO T show a literal 3-dimensional repr esentation of what is under the water .
Real T ime Sonar (RTS®) W indow A Real T ime Sonar (RTS®) W indow appears on the right side of the display in the Sonar Vie w only . The R TS® Window alwa ys updates at the fastest r ate possible for depth conditions and shows only the r eturns from the bottom, structure and fish that ar e within the transducer beam.
13 Bottom Presentation As the boat mov es, the unit charts the changes in depth on the display to create a profile of the Bottom Contour . T he type of bottom can be determined from the return charted on the display . A Hard Bottom such as compacted sediment or flat rock appears as a thinner line acr oss the display .
14 Structure ID® r epresents weak returns in blue and str ong returns in red. WhiteLine® highlights the strongest sonar returns in white, r esulting in a distinctive outline. This has the benefit of clearly defining the bottom on the displa y . 531526-1_A - 747c_&_777c2_Man_Eng.
15 Sonar Zoom V iew Sonar Zoom V iew increases the display ed resolution to separate sonar returns that are v ery close together , such as those caused by fish suspended close to the bottom or within structure. In Zoom V iew , the display is split to show a narrow slice of the full r ange view on the right and the zoomed view on the left.
16 200/83 kHz Split Sonar V iew Split Sonar V iew displays sonar returns from the 83 kHz wide beam on the left side of the screen and displays sonar r eturns from the 200 kHz narrow beam on the right side of the screen. Depth is alwa ys displayed in the upper left hand corner .
17 Big Digits V iew Big Digits V iew provides digital data in a lar ge, easy-to-see format. Depth is always displa yed. Readouts for tempera ture, speed and T riplog information ar e displayed automa tically if the appropriate accessory is connected to the system.
Circular Flasher V iew Circular Flasher V iew displays Real T ime Sonar (RTS®) data in the tr aditional flasher format. Depth and temper ature are alw ays display ed. The digital readouts in the Circular Flasher V iew cannot be customized. 18 531526-1_A - 747c_&_777c2_Man_Eng.
19 Side Beam V iew (with optional-purchase QuadraBeam PLUS™ transducer) Side Beam V iew is only available if y ou have connected an optional-purchase QuadraBeam™ transducer accessory and when T ransducer Select is set to QuadraBeam (see Sonar Menu Tab: Transducer Select ).
Classic layout: T he top portion of the display presents a historical log of sonar returns from the 200 kHz do wn-looking sonar beam. New information in the down beam panel scrolls fr om right to left. The bottom portion of the display presents a historical log of sonar returns fr om the 455 kHz right- and left - looking sonar beams.
21 Slanted layout: T his layout pr esents the two 455 kHz side sonar beams and the 200 kHz down-looking sonar beam as three panels of historical da ta. This lay out is presented as three slanted panels. Ne w information appears on the right, and scrolls to the left.
WideSide® V iew (with optional-purchase WideSide® transducer) WideSide® V iew is only a vailable if y ou have connected a W ideSide® transducer accessory and when T ransducer Select is set to WideSide® (see Sonar Menu Tab: Transducer Select ). The W ideSide® transducer requir es a separate pur chase.
Ke y Functions Y our Fishing System user interface consists of a set of easy-to-use k eys that work with various on-scr een views and menus to give you flexibility and contr ol ov er your fishing experience.
24 MENU Ke y The MENU k ey is used to access the menu system. Start-Up Options Menu - Press the MENU k ey during the power up sequence to view the Start -Up Options menu.
25 EXIT Ke y The EXIT k ey has multiple functions, depending on the situation: • If an alarm is sounding, pressing EXIT will cancel the alarm. • If a menu tab is selected, pressing EXIT will exit the menu mode and return to the view . • If a menu is active, pressing EXIT will return to the pr evious lev el in the menu system.
26 Accessory Bus Use the Accessory Bus to expand the functionality of the Fishing System. Accessories plug directly into the Fishing System, enabling Adv anced features such as W eatherSense®, GPS Functionality and the SmartCast® Wir eless Sonar Link.
27 P owering Up the Unit T urn on your Fishing System by pr essing the POWER/LIGHT key . The T itle screen is display ed until the Fishing System begins operation. Y our Fishing System will begin Normal or Simulator opera tion, depending on the presence or absence of a transducer .
T he Menu System The menu system is divided into easy -to-use menu modules. The main components of the menu system are: Start-Up Options Menu - Pr ess the MENU key during the pow er up sequence to view the Start -Up Options menu.
29 User Mode (Normal or Advanced) - An Advanced Mode is pro vided for users who desire the highest lev el of control over the F ishing System and Normal Mode for users who desir e greater simplicity and fe wer menu choices.
30 Start -Up Options Menu Press the MENU ke y when the Title screen is displa yed to access the Start-Up Options menu. Use the UP or DOWN 4-WA Y Cursor keys to position the cur sor, then the RIGHT Cursor ke y to select one of the following choices.
31 Simulator Use the Simulator to learn how to use your F ishing System before taking your boat on the wa ter . The Simula tor is a very powerful tool that simula tes on the water oper ation, providing a r andomly-updated displa y.
32 System Status Use System Status to vie w system connections and to conduct a unit self-test. The f ollowing screens are displa yed in turn when you pr ess the VIEW button when using System Status: • Self T est • Accessory T est.
33 Accessory T est Accessory T est lists the accessories connected to the system. NOTE: The speed accessory will be detected only if the paddlewheel has moved since your Fishing System was powered up. Exit System Status by po wering your Fishing System off .
34 Sonar X-Pr ess™ Menu The Sonar X-Press™ Menu pro vides access to the settings most frequently-used. Pr ess the MENU key once while in an y of the Sonar Views to access the Sonar X-Pr ess™ Menu. NOTE: Upper Range only appears in Advanced User Mode when in Sonar, Split Sonar, Big Digits and Circular Flasher Views.
35 Side (WideSide® transducer: WideSide® view only) Side sets which transducer beam from the W ideSide® T ransducer is shown in the WideSide® V iew .
36 Sensitivity Sensitivity controls how much detail is sho wn on the display and will adjust the sensitivity of all sonar frequencies. Incr easing the sensitivity shows more sonar r eturns from small baitfish and suspended debris in the water; ho wever , the display may become too cluttered.
37 Upper Range (Advanced: Sonar, Split Sonar, Big Digits and Circular Flasher Views only) Upper Range sets the shallo west depth range tha t will be displayed on the Sonar , Split Sonar , Big Digits and Circular Flasher views.
38 Low er Range Lower Range sets the deepest depth range that will be displayed. A utomatic is the default setting. W hen in automatic mode, the lower r ange will be adjusted by the unit to follow the bottom. Selecting a specific setting locks the depth range into Manual mode.
39 Side Beam Range (WideSide® transducer: WideSide® view only) Side Beam Range sets the deepest r ange that will be displayed in the WideSide® V iew .
40 Chart Speed Chart Speed determines the speed a t which the sonar information mo ves across the display , and consequently the amount of detail shown. A faster speed sho ws more information and is pr eferred b y most anglers; how ever , the sonar information mo ves across the displa y quickly .
41 Zoom Lev el (Sonar Zoom View only) Zoom Level sets the magnifica tion level for the Sonar Zoom V iew , and is only available on the X -Press™ Menu when the Sonar Zoom V iew is active and Bottom Lock is off. Use Zoom to incr ease the display resolution to separa te sonar returns that ar e very close together .
42 Bottom Range (Sonar Zoom View only, when Bottom Lock is On) Bottom Range allows y ou to control how much of the water column, measur ed up from the bottom, is shown in the Sonar Zoom V iew , and is only available in the Sonar X-Pr ess™ menu when the Sonar Zoom View is activ e and Bottom Lock is on.
43 Sonar Menu T ab Press the MENU ke y twice to access the Main Menu System and then press the RIGHT Cursor key to select the Sonar tab. NOTE: Menu choices will vary depending on system settings such as whether the unit is set for Advanced User mode or what transducer is currently selected.
44 Beam Select Beam Select sets which sonar returns fr om the transducer will be display ed on the screen. When set to 200/83 kHz , the r eturns from both beams are blended by starting with the 83 kHz wide beam return, dimming it, and then ov erlaying it with the 200 kHz narrow beam r eturn.
45 Fish ID+™ Fish ID+™ uses advanced signal processing to interpret sonar returns, and will displa y a Fish Symbol when very selective requirements ar e met. When a fish is detected, a fish icon and its depth are displayed abo ve the return that has been classified as being a fish.
46 Fish ID Sensitivity Fish ID Sensitivity adjusts the threshold of the Fish ID+™ detection algorithms. Selecting a higher setting allows weaker r eturns to be displayed as fish. T his is useful for identifying smaller fish species or baitfish. Selecting a lower setting displa ys fewer fish fr om weak sonar returns.
47 Bottom V iew Bottom V iew selects the method used to represent bottom and structur e on the display . Structure ID® repr esents weak returns in blue and strong r eturns in red. WhiteLine® highlights the strongest sonar returns in white resulting in a distinctiv e outline.
48 83 kHz Sensitivity (Advanced) 83 kHz Sensitivity changes the sensitivity of the 83 kHz beam. Increasing the 83 kHz Sensitivity will display additional weak r eturns and decreasing the 83 kHz Sensitivity will display fe wer weak returns.
49 455 kHz Sensitivity (Advanced: with QuadraBeam PLUS™ transducer) 455 kHz Sensitivity adjusts the sensitivity of the 455 kHz beam. Increasing the sensitivity will display additional weak r eturns and decreasing the sensitivity will display fe wer weak returns.
WideSide® Sensitivity (Advanced: with WideSide® transducer) WideSide® Sensitivity adjusts the sensitivity of the WideSide® beam. Incr easing the sensitivity will display additional weak r eturns and decreasing the sensitivity will display fe wer weak returns.
51 Depth Lines (Advanced) Depth Lines divide the display into four equal sections which ar e separated by three horizontal depth lines. T he depth of each line is displayed along the depth scale. Y ou can either turn Depth Lines On or Off. T he Depth Lines menu choice is available when User Mode is set to Adv anced (see Setup Menu Tab: User Mode ).
52 Surface Clutter (Advanced) Surface Clutter adjusts the filter that r emoves surface clutter noise caused b y algae and aeration. T he lower the setting, the less surf ace clutter will be displayed. T he Surface Clutter menu choice is av ailable when User Mode is set to Advanced (see Setup Menu Tab: User Mode ).
53 Noise Filter (Advanced) Noise Filter adjusts the sonar Noise F ilter to limit interference on the display from sources such as y our boat engine, turbulence, or other sonar devices. T he Noise Filter menu choice is av ailable when User Mode is set to Advanced (see Setup Menu Tab: User Mode ).
54 W ater T ype (Advanced) W ater T ype configures your unit for oper ation in fresh or salt wa ter . The W ater T ype menu choice is available when User Mode is set to Advanced (see Setup Menu Tab: User Mode ).
55 Alarms Menu T ab From an y view , press the MENU ke y twice to access the Main Menu System. The Alarms tab will be the default selection. NOTE: When an alarm is triggered, you can silence it by pressing any key. The alarm will be silenced, and will not be triggered again until a new instance of the alarm condition is detected.
56 Depth Alarm Depth Alarm sounds when the depth becomes equal to or less than the menu setting. T o change the Depth Alarm setting: 1. Highlight Depth Alarm on the Alarms main menu. 2. Use the LEFT or RIGHT 4-WA Y Cursor Control ke ys to change the Depth Alarm setting.
Low Battery Alarm Low Battery Alarm sounds when the input battery voltage is equal to or less than the menu setting. T he battery alarm will only sound for the battery tha t is connected to the Fishing System. The Lo w Battery Alarm should be set to warn you when the ba ttery voltage drops below the safety margin tha t you have determined.
58 T emp Alarm T emp Alarm sounds when the w ater temperatur e (from the tempera ture probe that is built into the tr ansducer) detected by the Fishing System reaches the T emp Alarm setting, which is either set in degrees Fahr enheit or Celsius [International Models only] .
59 Setup Menu T ab From an y view , press the MENU ke y twice to access the tabbed Main Menu System, then press the RIGHT cursor k ey until the Setup tab is selected.
60 Units - Depth Units - Depth selects the units of measur e for all depth-related r eadouts. T o change the Units - Depth setting: 1. Highlight Units - Depth on the Setup menu. 2. Use the LEFT or RIGHT 4-W A Y Cursor Control ke ys to change the Units - Depth setting.
61 Units - Speed (with Temp/Speed or GPS receiver) Units - Speed selects the units of measure f or speed-related readouts, and will appear in the menu if a T emp/Speed Accessory is connected and the paddlewheel has mov ed at least once, or if a GPS Receiver is connected.
62 T riplog Reset (with Temp/Speed or GPS receiver) T riplog Reset r esets the T riplog to zero, and will appear in the menu if a T emp/Speed Accessory is connected and the paddlewheel has mov ed at least once, or if a GPS Receiver is connected.
63 Select Readouts (Advanced, Sonar view only) Select Readouts sets individual digital r eadouts on the Sonar View . This Advanced fea ture allows you to select wha t data will be display ed in each o.
64 T o Select Readouts: 1. Make sure y ou are in Advanced User Mode, then highlight Select Readouts on the Setup main menu. 2. Use the RIGHT 4-WA Y Cursor Control ke y to initiate this procedure. 3. The Select Readouts submenu will appear , showing a list of all Readouts.
65 Depth Offset (Advanced) Depth Offset will adjust the digital depth r eadout to indicate depth from the waterline or boa t's keel. Enter a positive vertical measur ement from the transducer to the waterline to r ead the depth from the waterline.
66 T emp Offset (Advanced) T emp Offset will adjust the temper atur e readout by the amount enter ed. This menu choice is available only when in Adv anced User Mode (see Setup Menu Tab: User Mode .) T o change the T emp Offset setting: 1. Make sure y ou are in Advanced User Mode, then highlight T emp Offset on the Setup menu.
67 Digits F ormat (Advanced) Digits Format allows y ou to add a tenth decimal place to readouts such as T emperature and Depth. T he format can be changed to small forma t, large format or no f ormat. This menu choice is a vailable only when in Advanced User Mode (see Setup Menu Tab: User Mode .
68 NMEA Output (Advanced) NMEA Output turns the NMEA* output on or off . This menu choice is available only when in Advanced User Mode (see Setup Menu Tab: User Mode. ) NMEA Output should be turned On if you connect the NMEA Output wires of the GPS Receiver cable to another NMEA-compatible de vice, such as an autopilot.
69 V iews Menu T ab From an y view , press the MENU ke y twice to access the tabbed Main Menu System, then press the RIGHT 4-W A Y Cursor Control k ey until the Vie ws tab is selected. This menu tab allows you to set the av ailable views to either hidden or visible in the view rota tion.
70 Accessories Menu T ab From an y view , press the MENU ke y twice to access the tabbed Main Menu System, then press the RIGHT cursor k ey until the Accessories tab is selected. If no accessories are attached to the Accessory Bus, no menu choices will appear under the Accessories tab.
71 T roubleshooting Before contacting the Humminbir d® Customer Resource Center , please read the following section. T aking the time to re view these troubleshooting guidelines may allow y ou to solve a performance problem y ourself , and therefore av oid sending your unit back for r epair .
72 Display Pr oblems Ther e are sever al main conditions or sources of possible interfer ence that may cause problems with the quality of the informa tion displayed on the control head. Look in the following table f or some symptoms of display problems and possible solutions: Problem P ossible Cause The contr ol head loses power at high speeds.
73 Finding the Cause of Noise Electrical noise usually affects the display with man y black dots at high speeds, and high sensitivity readings. One or more of the f ollowing sources can cause noise or.
74 700 Series™ Fishing System Accessories Accessories customize the 700 Series™ Fishing System to your needs and enable you to stay on the edge of ne w technology . When an accessory is connected to the 700 Series™ Fishing System, additional menus and readouts are added automatically to the Main Menu System.
75 GPS Connection Cable: purchase the GPS Connection Cable in order to connect a handheld or other NMEA* GPS-compatible device tha t you may already own to y our 700 Series™ Fishing System. *NMEA 0183 is a National Marine Electronics Association standard for data communication.
76 With the ne w InterLink™ Network Connection, you can no w share GPS position, waypoints, r outes and your current track betw een two Humminbird Fishing Systems in real time. Mark a w aypoint at the console, and it’s instantly available on the second unit.
77 Specifications Depth Capability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1500 ft (450 m) P ower Output . . . . . . . . . . . . 500 W atts (RMS), 4000 Watts (P eak to P eak) Operating Fr equency . . . . . . . . . . . 200 kHz and 83 kHz DualBeam PLUS™ Area of Cov erage .
78 POLICY ON ENVIRONMENTAL COMPLIANCE: It is the intention of Humminbird® to be a good corporate citizen and comply and meet all known and applicable environmental regulations in the areas and countries where our products are sold. We will promote and implement environmentally sound processes in support of national and international regulations.
79 Glossary Sonar T erms: Alarm, Depth: Depth Alarm is a user -controllable, audible alert that sounds when depth is less than or equal to the setting. Alarm, T emperatur e: T emperatur e Alarm is a user-controllable, audible alert that sounds when the wa ter surface temperatur e equals the setting.
80 Chart Speed: Chart Speed is a user -controllable featur e that sets the speed at which sonar information mo ves across the display . A faster setting displays sonar information fr om more pings and.
81 Feature Memory : Featur e Memory is a Humminbird® fea ture that retains the user's menu settings in permanent memory . Settings are retained e ven when the unit is power ed off indefinitely . Fish Arch: A F ish Arch is the apparent "arch" tha t appears on the display when any object mov es through the sonar cone.
82 Grayscale, In verse: In verse Gr ayscale is a Humminbird® featur e that rev erses the correlation of sonar signal str ength and the shade of gray typically used to represent it. T he strongest sonar signals are r epresented by "white", and progressiv ely weaker signals are r epresented in progr essively darker shades of gray .
83 Hydrodynamic noise can be ov ercome by proper tr ansducer installation. Many Humminbird® products ha ve a Noise Filter menu setting that allo ws the user to clear the screen of noise that is difficult to elimina te. Pixels: Pixels are the "picture elements", or small squar e blocks, that make up the image on the LCD.
84 QuadraBeam PLUS™: Quadr aBeam PLUS™ is a Humminbird® sonar configuration tha t uses four sonar beams for a more detailed bottom image. QuadraBeam PLUS™ uses the DualBeam PL US™ configuration for downlooking, and also adds two additional beams to look to the left and right.
85 Sensitivity: Sensitivity is a user fea ture that adjusts the sensitivity of the sonar system to show more or less detail in the w ater . Higher sensitivities are often preferr ed, howev er , when the water contains debris (silt, storm debris, etc.) and it can be difficult to pick out targets.
86 Structure: Structure is a general term for objects on the bottom tha t present a discontinuity and are a likely a ttractor for fish. T his includes bottom contour featur es (drop-offs, humps, and holes), standing structure (stumps, timbers, brush piles) and a wide range of other potential objects (sunken boa ts, reefs).
87 new range, and the old sonar inf ormation would continue to scroll off the scr een at the old range. T ransducer: T he transducer is part of the sonar system, which mounts on the boat and is in contact with the wa ter , that conv erts the electrical energy from the transmitter into sound energy , and that forms the sonar beam in turn.
88 V iewing Angle: Vie wing Angle is an attribute of an LCD that char acterizes visibility of the display when viewing fr om off the central access, such as when standing to the side of the fishfinder . Wider vie wing angles are better because the information r emains visible even when viewing fr om the side.
89 Notes 531526-1_A - 747c_&_777c2_Man_Eng.qxp 10/2/2006 1:42 AM Page 94.
Notes 90 531526-1_A - 747c_&_777c2_Man_Eng.qxp 10/2/2006 1:42 AM Page 95.
Contact Humminbird® Contact the Humminbird® Customer Resour ce Center in any of the f ollowing wa ys: By T elephone: (Monday - F riday 8:00 a.m. to 4:30 p.m. Central Standar d Time): 1-800-633-1468 By e-mail: (typically we r espond to your e-mail within three business da ys): custserv@johnsonoutdoors.
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 Humminbird 747c 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 Humminbird 747c - in questo modo è possibile verificare se l’apparecchio soddisfa le tue esigenze. Esplorando le pagine segenti del manuali d’uso Humminbird 747c imparerai tutte le caratteristiche del prodotto e le informazioni sul suo funzionamento. Le informazioni sul Humminbird 747c ti aiuteranno sicuramente a prendere una decisione relativa all’acquisto.
In una situazione in cui hai già il Humminbird 747c, 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 Humminbird 747c.
Tuttavia, uno dei ruoli più importanti per l’utente svolti dal manuale d’uso è quello di aiutare a risolvere i problemi con il Humminbird 747c. Quasi sempre, ci troverai Troubleshooting, cioè i guasti più frequenti e malfunzionamenti del dispositivo Humminbird 747c 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.
