Instruction/ maintenance manual of the product CSH-5L/CSH-8L Furuno
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COLOR SCANNING SONAR CSH-5 L/CSH-8L Back.
Your Local Agent/Dealer Your Local Agent/Dealer 9-52 Ashihara-cho, 9-52 Ashihara-cho, Nishinomi y a 662-8580, JAPAN Nishinomi y a 662-8580, JAPAN Tele p hone : Tele p hone : 0798-65-2111 0798-65-2111 Fax Fax 0798-65-4200 0798-65-4200 : : F IRST EDITION : F IRST EDITION : DEC DEC .
i SAFETY INSTRUCTIONS WARNING ELECTRICAL SHOCK HAZARD Do not open the equipment. Only qualified personnel should work inside the equipment. Immediately turn off the power at the switchboard if water leaks into the equipment or something is dropped in the equipment.
ii CAUTION Do not exceed 18 knots with the trans- ducer lowered and do not exceed 16 knots when lowering or raising the transducer. The transducer may become damaged. Turn off the hull unit before using the hand crank. Bodily injury may result if the power is not turned off.
iii T A BL E OF CO NTE NTS FOR EW ORD ................................................................................................................. vi SYSTEM CO NFIG UR A TION .......................................................................
iv 3. A DV ANCED SONAR OPER A TIO N ................................................................... 3-1 3.1 T rackin g a Fish Sc hool ( target l ock) ........................................................................... 3-1 3.2 Detecti ng Fish Schools Aurally .
v 8. MAINT EN A N C E, TR OUB LE SH OOTING ............................................................ 8-1 8.1 Gen eral M a inten anc e................................................................................................. 8-1 8.2 C l eani ng the E qui pme n t.
vi FOREWORD A W ord to th e Ow ner of th e CSH-5L/CSH-8L Congratulat ions on your choice of the FURUNO CSH-5L/CSH-8L Color Scanning Sonar . For over 50 years FURUNO Electric Company has enjoyed an enviabl e reputation for innovative and dep endable m arine electronics equipm ent.
vii SYSTEM CONFIGURA TION Processor Unit CSH-5210 T ransceiver Unit CSH-5130 Control Unit CSH-5211 Pre-amplifier Unit CSH-5020 Hull Unit CSH-5040, 600 mm stroke CSH-5041, 400 mm stroke Ship's Mai.
viii DC/A C Inv er ter TR-2451 24 VDC : Standard Supply : Option : User Supply Hull Unit CSH-8040, 600 mm stroke CSH-8041, 400 mm stroke T ransceiver Unit CSH-8030 Motion Sensor MS-100 Processor Unit CSH-5210 Control Unit CSH-5211 Nav aid Current Indicator AD Conv er ter Speed Log E/S Interf ace Remote Controller Speaker Monitor (MU-150C , etc.
1-1 1. OPERA TIONAL OVER VIEW 1.1 Control Unit All operations are carrie d out from the control unit. All cont rols quickly respond to the operator ’ s comm and and the associated re action can be seen on the screen almost imm ediately . F1 F2 F3 F4 RANGE GAIN POWER T ur ns power on/off .
1. OPER A TIONAL OVER VIEW 1-2 1.2 Remote Controller (option) The remot e controller provides arm chair control of the tilt, range, gain and menu funct ions.
1. OPERA TIONAL OVER VIEW 1-3 1.3 Basic Op erating Procedure 1.3.1 T u rning on the pow er 1. Press the POWE R sw it ch on the control unit to turn on t he power . 2. T urn on the m onitor (user supply). The system init iates the ST ART UP tes t to check itself for proper operat ion.
1. OPER A TIONAL OVER VIEW 1-4 1.3.3 T ransmitting TRANSMISSION in t he SONAR menu is off in the default setting. If it is has been set to ON, the procedure below is not necessary . W hen the transducer is lowered, tr ansmission starts and when it is raised transmission is st opped.
1. OPERA TIONAL OVERVIEW 1-5 1.3.4 Adjusting backlighting of contr ol unit 1. Pr ess t he [M E NU] key t o open t he menu. 2. Use t he [RANGE] control t o choose [M ENU MO DE] at t he top of the s c r een. 3. Use t he [GAI N] cont rol to c hoos e S Y ST EM.
1. OPER A TIONAL OVER VIEW 1-6 1.3.5 Choosing a di spl ay mode Three display m odes are available: NO RMAL, COMBI-1 and COMBI -2. T o choose the displa y m ode, do the follo wing: 1. Press the [MENU] key to open the m enu. The last-used menu is displayed.
1. OPERA TIONAL OVER VIEW 1-7 Norma l mode d isplay (sonar display ) SHIP SPEED 12.4 kt SHIP COURSE 246 LA T/LON 32 52.150N 132 12.150E DEPTH 126m WA TER CURRENT C1 1.2kt 342 C2 0.8kt 298 C3 0.4kt 256 WA TER TEMP 12.4 C 20min 10 0 14 12 10 T ext Window For description see Chapter 5.
1. OPER A TIONAL OVER VIEW 1-8 COMB I-2 display (sonar display + echosounde r disp lay ) T ext Window For description see Chapter 5. 500 R 1000 T 30 (30) G 10.0 S E N N 545 472 272 B 60S - - Bottom Fish School Depth Scale WA TER TEMP 12.4 C 20min 10 0 14 12 10 SHIP SPEED 12.
1. OPERA TIONAL OVER VIEW 1-9 1.3.7 Adjusting the gain The [GAI N] control adjusts receiver sensitivity . It should be adjusted to see f ish echoes clearl y with minimal noise on t he screen.
1. OPER A TIONAL OVER VIEW 1-10 1.4 Setting the T ilt A ngle The tilt angle sho ws the direction to which the sound wave is emit ted. When the sound wave is em itted horizontally , it is said to be zer o (0) degrees and when emitt ed vertically , 90 degrees.
1. OPERA TIONAL OVER VIEW 1-1 1 Range and tilt angle Rang e (m) ±2-10 ° ±4-14 ° ±6-20 ° ±10-26° 50, 85, 100, 150, 200, 25 0, 300, 350 400, 450, 500 600, 800 1000, 1200, 1600 ±10° ±8° ±6°.
1. OPER A TIONAL OVER VIEW 1-12 1.4.2 Bottom and tilt angle Finding the pro per tilt angle is of utm ost importance when searching f or fish, especially in coastal water fishing, where the de pth of the fishing groun d is from 50-100 m.
1. OPERA TIONAL OVER VIEW 1-13 1.4.4 Point s to consider • As a general rule of t humb, a vertically distribut ed fish school is a better sonar target than a horizontall y one, since it reflects the transm itted pulse back tow ard to the source . • In case 3, both f ish sch ools (a) and (b) are presented.
1. OPER A TIONAL OVER VIEW 1-14 1.4.6 Suit able tilt angle The table below sho w s the est imated detect ion range for tilt angles of 0, 5, 10 and 15 degrees.
1. OPERA TIONAL OVER VIEW 1-15 1.6 Sonar Me nu Ov er v i e w This equipm ent has four menus: sonar m enu, sounder m enu, marks menu and system menu. Of the four menus, the SO NAR menu is the one you will use m ost often. Note that t he gain and range cannot be adjusted while the m enu is displayed.
1. OPERA TIONA L OVERVIEW 1-1 6 4. Use the [ R ANG E] contr ol to choose a menu it em. The s el ected i t em is highl ight ed. Note : Items di splay ed i n red are loc k ed t o pr e v e nt acc i dent al change of sett ing.
1. OPERA TIONAL OVER VIEW 1-17 Description of sonar menu (con ’t from previous page) Item Description Ref. p age COLOR RESPONSE Adjusts color level against strong reflections. T he higher the setting, the more the red color is displayed and weak level colors are display ed as is, thereby giving the appearance that the gain has been raised.
1. OPER A TIONAL OVER VIEW 1-18 (This page intentionally left blank.).
2-1 2. FINE TUNING TH E SONAR PICTURE 2.1 Eliminating Unwanted Echoes Echoes from targets such as bot tom and fish return to t he transducer in order of distance to them, and when we compare their intensities at the t ransducer face, those f rom nearer targets are generally stronger when their reflect ing properties are nearly equal.
2. FINE TUNI NG THE SO NAR PICTU RE 2-2 8. On a long range, locate a f ish school which is approaching own ship. Note that the t ilt should be kept adjust ed so that the fish school is always pl aced in the center of t he sonar beam, i.e., so that the fish school is displa yed in strongest colors possible.
2-3 2.3.2 Pulse length The pulse lengt h control determ ines the length of the transm ission pulse emit ted into the w at er . W hile a longer pulse is ad vantageous for long-range sounding, it has the disadvantage of being poor in discrim ination of targets, i.
2. FINE TUNI NG THE SO NAR PICTU RE 2-4 2.4 Suppressing Bottom and Sea Surface Reflect ions in Shallo w Fishi ng Grounds In shallow fishing groun ds with hard or rocky bottom, bottom reflections often.
2. FINE T UNING THE S ONAR PI CTURE 2-5 2.5 Rejecting Sonar Interferenc e and Noise W hile observ ing the son ar picture, you may encounter occasio nal or interm ittent noise and interf erence. These are mostly caused by on-board elect ronic equipm ent, engine or propeller noise, or elect rical noise f rom other sonars being operated nearb y .
2. FINE TUNI NG THE SO NAR PICTU RE 2-6 2.5.4 Rejecting inte rference with TX cy cl e W hen other sonars of the same TX frequency as own sonar are near , a n interference ring cause d may be displayed. T o erase the int erference ring fr om the screen, reduce the TX CYCLE sett ing.
2. FINE T UNING THE S ONAR PI CTURE 2-7 2.6 Choosing Beam w id th 2. 6.1 Ho ri zontal beamw idth If you wish to have bett er bearing discrim ination (ability to dist inguish two closely located target.
2. FINE TUNI NG THE SO NAR PICTU RE 2-8 (This page intentionally left blank.).
3-1 3. ADV ANCED SONAR OPERA TION 3.1 T racking a F i sh School (t arget lock) T arget lock, which requires speed and heading i nputs, automat ically tracks a fixed location (such as a reef) so that you won’t lose sight of it on the displa y screen.
3. ADV ANCE D SONA R OPERA TION 3-2 Note 3: The target lock feature t racks a target up to 55° t ilt angle. For exam ple, if a ship moves fr om position A t o position D, the target lock works between posit ions A and B. The tilt angle is f ixed between posit ions B and C is 55°, however calculati on continues inte rnally .
3-3 3.2 Detec ting Fish Schoo ls A urally Sometimes you m ay be preoccupied with other tasks and unable to concentrat e on watching the son ar picture. In such cases it would be a good cho ice to use the audio f unction. This function enables you to m onitor echoes from f ish schools and bottom through the built-in speaker .
3. ADV ANCE D SONA R OPERA TION 3-4 3.3 The Fish A larm The fish alarm generates an audio alarm when a fish echo above a certain strength enters t he alarm zone. 1. Operate the t rackball to place the tr ackball m ark on the starting point of the alarm zone.
3. AD V ANCED S ONAR OPER A TION 3-5 3.4 Measurin g Fish Scho ol Speed T o ensure a goo d haul, it is im portant to estimate the direction and sp eed of the fish school bef ore shooting the net.
3. ADV ANCE D SONA R OPERA TION 3-6 Note 3: Each tim e the [FISH] key is pressed the fish m ark changes in the sequence sho wn below . Maximum 10 f ish m ark s may be inscribed, one latest, one 2 nd latest and eight past. Fish ke y pressed once: Fish ke y pressed twice: Fish ke y pressed three times: Fish ke y pressed four times: X X X 3.
3. AD V ANCED S ONAR OPER A TION 3-7 3.6 Event Mark, Own Sh ip Position Mark 3.6.1 Event mark The event m ark, which requires speed and hea ding data, is useful f or finding the horizontal range, dept h and bearing t o a location som e distance from current position.
3. ADV ANCE D SONA R OPERA TION 3-8 Each time the key is pressed t he appearance of t he event marks changes as below . T en m arks may be entered. W hen this amount is exceeded the oldest event m ark is auto m atically erased.
3. AD V ANCED S ONAR OPER A TION 3-9 3.7 Collecti v el y Deleting Marks Y o u may collectively del ete track, event m arks or fish marks as shown below . Own ship position m ark may be also be deleted, one by one. 1. Press the [MENU] key to open the m enu.
3. ADV ANCE D SONA R OPERA TION 3-10 3.8 Function Keys (F1-F4) A function key m ay be pr ogramm ed two ways: set up t he equipment according to fishing ground or target f ish, or provide a shortcut f or a menu item on the SONAR or SOUNDER menu.
3. AD V ANCED S ONAR OPERA T ION 3-1 1 7. Use the [ GAIN] control to choose t he f unction key (F1-F4) you want t o program. 8. Press the [EVENT] key to program the function key selected at step 7.
3. ADV ANCE D SONA R OPERA TION 3-12 3.8.4 Confir mi ng function key program Y o u may confirm function key program as belo w . 1. Press the [MENU] key to open the m enu. 2. Use the [RANGE] control to choose [MENU MODE]. 3. Use the [GAI N] control to choose SONAR.
3. AD V ANCED S ONAR OPER A TION 3-13 3.9 Suppressing Effect s of Pitching and Rolling (S t abilizer) The Motion Sensor MS- 100 (option) compensat es for the affects o f pitching and rolling to provide st eady , non-f ading pictures, along the beari ng selected.
3. ADV ANCE D SONA R OPERA TION 3-14 3. T o turn off the stabilizer , press the [ ST ABILIZ ER] key . The stabilizer m ark, stabilizer indication an d stabilizer bearing data ar e erased. If range and bearing m arks are shown they are displayed alo ng with their data.
4-1 4. ECHOSOUNDER MODE This chapter covers ope ration of t he echosounder picture, w hic h may be displayed by choosi ng the COMBI-2 m ode. 4.1 Choosing the Range The basic range and range shif ting functions toget her give you the m eans to select the depth you ca n see on the screen.
4. ECH OSOUNDER 4-2 ** SOUNDER MENU ** (RANGE CTRL: U/D , GAIN CTRL: L/R) [MENU MODE] : SONAR SOUNDER MARKS SYSTEM COLOR : 1 23 4 RANGE : 160 SHIFT : 0 E/S INT REJECT : ON OFF GAIN : 3.0 CLUTTER : 2.0 ADV ANCE : 2/1 1/1 1/2 1/4 1/8 COLOR CURVE : LINEAR 1 2 3 DELETE COLOR : 0 DRAFT : 0.
4. ECHO SOU NDER 4-3 4.3 Picture A d vance Speed The picture ad vance speed determines ho w quickly the vertical scan li nes run across the screen. W hen selecting a picture advance speed, keep i n mind that a fast advance speed will exp and a f ish school horizontally and a slo w advance speed will contract it .
4. ECH OSOUNDER 4-4 4.5 Suppressing Interference Interference f rom other sounders or electrical in terference shows itself on the screen as in the illustrat ion below . Interference from other sounders Inteference from electrical equipment Interference T o rem ove interference, do the follo wing: 1.
4. ECHO SOU NDER 4-5 4.7 Erasing Weak Echoes Sedim ent s in the water or reflect ions from plankton m ay be p ainted on the screen in green or light- blue, as shown in the ill ustration below . These echoes may be erased in order of strength as below .
4. ECH OSOUNDER 4-6 4.8 Other Ite ms on the So under Me nu The table below describ es the SOUNDER menu item s not described in the previous sections of this chapter . Sounder menu description Item Description Ref. p age COLOR Choose one of four display color patterns, according to your environment.
5-1 5. M A RKS A N D D A T A 5.1 Marks and Dat a on the Nor mal D ispl a y 500 3 B W 372 freeze 359 96 B 60S 450 15 ( 121) NW R 1000 Fish Mark* Latest Event Mark* T arget Lock Mar.
4. E CHOSOUNDE R 5-2 Descri ption of mark s and dat a on the norm al dis play Shows own ship’s present position and points in bow direction. Own Ship Mark When a heading sensor is connected, the North mark is displayed and points to North.
5. MAR KS AND DA T A 5-3 Description of marks and data on t he normal display (con’t from previ o us page) Mark/Data Description Range Rings The range rings are dashed concentric circles inscribed at intervals of 1/4 or 1/2 of the range in use, depending on menu setting.
5. MAR KS AND DA T A 5-4 Description of marks and data on t he normal display (con’t from previ o us page) Latest Event Mark Mark/Data Description This mark depicts important locations. Use the trackball to place the trackball mark where desired and press the [EVENT] key to inscribe an event mark.
5. MAR KS AND DA T A 5-5 5.2 Marks a nd Dat a on the Echosounde r and Audio Displays * = Requires appropriate sensor . *1 = Water current data may be displayed instead of temperature graph. See DISP SELECT on the SYSTEM menu. W A TER CURRENT C1 1.2kt 342 C2 0.
5. MA RKS AND DA T A 5-6 Descri ption of mark s and dat a on the ech osoun der and audi o displ ays Mark/Data Description Color Bar The color bar provides an estimate of echo strength in 16 colors.
6-1 6. INTERPR ETIN G TH E DISPLA Y 6.1 Bottom Echo W hen the tilt angle is changed, the bott om echo will appear on the screen. W hen the tilt angle is decreas ed, the bott om trace becomes wider and weak er . By observing the b ottom condition on t he screen, the skipper can prevent the net from being damaged by a reef or a shipwreck.
6. INTE RPRE TING THE DIS PLA Y 6-2 6.2 Fish School A fish school appears as a m ass of echoes. Th e color of the m ass show s the density . T o know the dis tribution and center poi nt of a fish school, choose several diff erent tilt angles.
6. INTE RPRE TING THE DIS PLA Y 6-3 6.3 Sea Surfac e Reflections T o reduce sea surf ace reflections, set the tilt angle to 5 ° or more so th at the upper edge of the sonar beam does not hit sea surface, or adjust the TVG funct ions.
6. INTE RPRE TING THE DIS PLA Y 6-4 6.5 False Echo by Side lobe An ultrasonic wave is em itted only in the direct ion set by the [TI L T ] lever but, in practice, there are some em issions outside the main beam that are called “sidelobes.
7-1 7. MARKS AND SYSTEM MENUS This chapter describes the MARKS and SYSTEM m enus. T o displa y the SYSTEM or MARKS menu, do the f ollowing: 1. Press the [MENU] key to open the m enu. 2. Use the [RANGE ] control to [MENU MODE] at the t op of the screen.
7. MARK S AND SYSTEM MENU S 7-2 MARKS menu description Item Description Ref. Page RANGE RINGS Tu rns the range rings on/off and chooses range ring interval, 1/4 or 1/2 the range. W hen turned of f, the north mark and heading mark are also turned off. 5-3 BEARING SCALE T urns the electronic bearing scale on/off.
7. MENU DE SCRIP TIO N 7-3 7.2 SYSTEM M enu ** SYSTEM MENU ** (RANGE CTRL: U/D , GAIN CTRL: L/R) [MENU MODE] : SONAR SOUNDER MARKS SYSTEM DIMMER : 10 DISP SELECT : TEMP CURRENT HEADING ADJ : 0 A UT O .
7. MEN U DES CRI PTION 7-4 Description of SYSTEM menu (con ’ t fro m previous page) Item Description Ref. Page. AUTO RETRACT Tu r ns automatic transducer retraction on/of f and sets speed (5-16) at which retraction occurs. T his function requires speed data .
8-1 8. MAINTENANCE, TROUBLESHOOTING ELECTRICAL SHOCK HAZARD Do not open the equipment. Only qualified personnel should work inside the equipment. WARNING 8.1 Gene ral Maintenance This equipm ent is designed and constructed t o provide m any years of trouble-f ree perform ance w hen properl y maintained.
8. MAIN TENANCE, TROUBLESH OOTING 8-2 8.3 Hull Unit Maintenance 8.3.1 Lubri cati on point s, zinc plate HULL UNIT Raise transducer and coat main shaft with DAPHAECOROAEX #2 (or equivalent) every six months. Apply MOLYTONE grease #2 (or equivalent) every six months.
8. MAIN TENANCE , TROUBLESH OOTING 8-3 8.3.2 Manuall y raising t he transducer If t he transducer cannot be raised autom atically , manually raise it as f ollows: CAUTION Turn off the hull unit before using the hand crank. Bodily injury may result if the power is not turned off.
8. MAIN TENANCE, TROUBLESH OOTING 8-4 8.4 Fu se Rep lacement Use the proper fuse. Use of a wrong fuse can result in damage to the equipment. WARNING The fuses in the processor and t ransceiver units protect t hem from overvoltage, equipm ent fault and reverse polarit y of the ship’s mains.
8. MAIN TENANCE , TROUBLESH OOTING 8-5 8.6 T rouble shooting The table below provide s common sym pto ms of equipm ent troubles an d the means to rectif y the m. Symptom Check, Remedy Cannot turn on the power • Check power cable. • Check ship’ s mains.
8. MAINTENANC E, TROUBLESHOO TING 8-6 8.7 Er ror Messages T he t able below sho w s the er ror mess ages w hich may appear on t he dis play . All error m essa ges are acc omp anied by the audi o al arm, w hich y ou may sil ence with th e [R /B] ke y .
8. MAINTENANC E, TROUBLESHOOTING 8-7 8.8 Diagnostic T est s T his uni t has 10 diagnos t ic t es t s (ei ght w ith t he CSH-8L) w hich c hec k i t for proper perf ormance. Al t hough the test s are desi gned primar i ly for use by the servic e t echnici an, they can also be ex ec ut ed by t he user t o identi fy def ecti ve component s.
8. MAIN TENANCE, TROUBLESH OOTING 8-8 8.8.2 Description of diagnostic test s Single te st, Conti( nuous) tes t The single and cont i(nuous) tests check the ROMs and RAMs for proper operation, one time or continuous, respectively .
8. MAIN TENANCE , TROUBLESH OOTING 8-9 Panel test The panel test checks the controls on the contr ol unit for proper operat ion. 1. Press a key . If the key is norm al, “1” is show n at t he key’ s on-screen lo cation when the key is pressed; “0” w hen it is release d.
8. MAIN TENANCE, TROUBLESH OOTING 8-10 Color test The color test checks for proper display of colors. Press the [EVENT] key to change the screen color , in the order of white, red, green and blue.
8. MAIN TENANCE , TROUBLESH OOTING 8-1 1 SIO test This test checks the input/out put ports (CN-A1, NMEA1/CIF1, NMEA2/CIF 2) o f the processor unit. The result f or the CN-A1 port is shown as OK or NG (No Good). The test f or the NMEA1/CIF1 and NMEA2/CIF2 ports is for fact ory use.
8. MAIN TENANCE, TROUBLESH OOTING 8-12 Echo test s DISPLAY ECHO TEST PRESS [MENU] KEY TO EXIT TRX ECHO TEST PRESS [MENU] KEY TO EXIT TRX ECHO TEST PRESS [MENU] KEY TO EXIT TRX ECHO TEST PRESS [MENU] K.
04/07/ 05 SP - 1 E1319S01D- M SPECIFI CA TIONS OF COLOR SC AN NING SO NAR CSH-5L/8L 1 PR OCESSOR U NI T 1.1 Disp lay Mode Sing le s can Echo sou nder com b inati on (si ngl e sc an and echo s ounder ) Audio c om bi nation ( si ngle s can and au di o pi ctur es) 1.
04/07/ 05 SP - 2 E1319S01D- M 2.5 Rang e R ang e (m ) Sing le Ec ho Sound er C omb inat ion Basic Rang e (m ) Off center “OFF” Off center “ON” O ff center “OFF” Off c enter “ON” 50 65 .
04/07/ 05 SP - 3 E1319S01D- M 4 INT ER F A CE 4.1 Input D ata NM EA 0183 Ver1 .5/2. 0/2. 2 GGA, RM C, GLL, VHW , VTG, HDG, H DM, HDT, DPT, DB T, DBS, CUR, V D R, GL C, GTD, MT W , R MA 4.2 Log, E/ S, KP Sp eed log pul se (c ontact s ig nal) : 200/400 p uls e/NM Sonde, E/S sig nal: VI-1 100A app li cable Exter nal KP: C urr ent lo op , 0 to 12V 4.
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A P-1 MENU TREE Default settings shown in bold italics. The menu item “[ MENU MODE],” which chooses a menu, is sho wn at the top of each menu. Sonar menu DISPLA Y MODE (COMBI-1, NORM , COMBI-2) TX.
MENU T REE AP - 2 Marks menu [MENU] key (MARKS selected from MENU MODE) RANGE RINGS ( 1/4R , 1/2R, OFF) BEARING SCALE ( ON , OFF) CURRENT VECT OR ( ON , OFF) CURRENT DIR ( TO , FROM) SHIP’S TRACK ( .
IN-1 INDEX 2 2ND A GC .................................................... 2-3 A AGC ............................................................ 2-2 ALARM ZONE key ...................................... 3 -4 Audio volume .............................
An important point after buying a device Furuno CSH-5L/CSH-8L (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Furuno CSH-5L/CSH-8L yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Furuno CSH-5L/CSH-8L - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Furuno CSH-5L/CSH-8L you will learn all the available features of the product, as well as information on its operation. The information that you get Furuno CSH-5L/CSH-8L will certainly help you make a decision on the purchase.
If you already are a holder of Furuno CSH-5L/CSH-8L, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Furuno CSH-5L/CSH-8L.
However, one of the most important roles played by the user manual is to help in solving problems with Furuno CSH-5L/CSH-8L. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Furuno CSH-5L/CSH-8L along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center