Section 1: Read Me First!
If you're having difficulty with your sonar, you can find an answer to the most common problems in Section 5, Sonar Troubleshooting. Finally, in Section 6, we offer Supplemental Material, including a list of warranty and customer service information. Now, if you're into the fine details, glance over the next segment on specifications to see just how much sonar power your unit contains. It's important to us (and our power users), but, if you don't care how many watts of power the unit has, skip ahead to important information on how sonar works, on page 3. Capabilities and Specifications: X125, X126DF, X135, X136DF General Display:.. 5.0" (12.7 cm) diagonal high contrast Film SuperTwist; programmable to viewing preference. Resolution:.. 480 pixel x 480 pixel resolution ; 230,400 total pixels. 16-level grayscale definition. Backlighting:. X136DF and X135: White LED backlit screen and keypad. X126DF and X125: Amber LED backlit screen and keypad. Input power:. 10 to 15 volts DC. Case size:.. 5.4" H x 6.9" W x 3.4" D (13.8 x 17.6 x 8.6 cm); sealed and waterproof; suitable for saltwater use. Back-up memory:.. Built-in memory stores sonar records for decades. Languages:.. 10; menu languages selectable by user. Sonar Frequency:.. 50/200 kHz for X126DF and X136DF; 200 kHz for X125 and X135. Transducers:. A dual-frequency Skimmer transducer with built-in temperature sensor is packed with the X126DF and X136DF. It has 35/12 cone angles. A single-frequency with built-in temperature sensor is packed with the X125 and X135. It has a 20 cone angle. Transducers operate at speeds up to 70 mph (61 kts). 2
Transmitter:. X136DF, X135 and X126DF: 4,000 watts peak-to-peak/500 watts RMS. X125: 2,400 watts peak-to-peak/300 watts RMS. Sonar sounding depth capability:. X136DF: 2,500 feet (762 meters). X126DF: 1,700 feet (518 meters). X135: 1,000 feet (305 meters). X125: 800 feet (244 meters). Actual capability depends on transducer configuration and installation, bottom composition and water conditions. All sonar units typically read deeper in fresh water than in salt water. Depth display:. Continuous display. Audible alarms:. Deep/shallow/fish/zone. Automatic ranging:. Yes, with instant screen updates. Auto bottom track:. Yes. Zoom bottom track:. Yes. Split-screen zoom:. Yes. Surface water temp:.. Yes. Speed/distance log:. Optional (requires optional speed sensor). NOTICE! The storage temperature range for your unit is from -4 degrees to +167 degrees Fahrenheit (-20 degrees to +75 degrees Celsius). Extended storage in temperatures higher or lower than specified will damage the liquid crystal display in your unit. This type of damage is not covered by the warranty. For more information, contact the factory's Customer Service Department; phone numbers are listed on the last page.

How Sonar Works

Sonar has been around since the 1940s, so if you already know how it works, skip ahead to the next segment on the typographical conventions used in this manual. But, if you've never owned a sonar fish finder, this segment will tell you the under water basics. Sonar is an abbreviation for SOund NAvigation and Ranging, a technology developed during World War II for tracking enemy submarines. (Lowrance developed the world's first transistorized sportfishing sonar in 3

Poor location Good location
Good location Poor angle Good and poor transducer locations.
How low should you go? For most situations, you should install your Skimmer transducer so that its centerline is level with the bottom of the boat hull. This will usually give you the best combination of smooth water flow and protection from bangs and bumps.
Transom Transducer centerline
Hull bottom Align transducer centerline with hull bottom.
However, there are times when you may need to adjust the transducer slightly higher or lower. (The slots in the mounting brackets allow you to loosen the screws and slide the transducer up or down.) If you fre9
quently lose bottom signal lock while running at high speed, the transducer may be coming out of the water as you cross waves or wakes. Move the transducer a little lower to help prevent this. If you cruise or fish around lots of structure and cover, your transducer may be frequently kicking up from object strikes. If you wish, you may move the transducer a little higher for more protection. There are two extremes you should avoid. Never let the edge of the mounting bracket extend below the bottom of the hull. Never let the bottom the face of the transducer rise above the bottom of the hull. Shoot-thru-hull vs. Transom Mounting Typically, shoot-thru-hull installations give excellent high speed operation and good to excellent depth capability. There is no possibility of damage from floating objects. It can't be knocked off when docking or loading on the trailer. However, the shoot-thru-hull installation does have its drawbacks. First, some loss of sensitivity does occur, even on the best hulls. This varies from hull to hull, even from different installations on the same hull. This is caused by differences in hull lay-up and construction. Second, the transducer angle cannot be adjusted for the best fish arches. This can be a problem on some hulls that sit with the bow high when at rest or at slow trolling speeds. Follow the procedure listed in the shoot-thru-hull installation section at the end of this lesson to determine if you can satisfactorily shoot through the hull. TRANSOM TRANSDUCER ASSEMBLY AND MOUNTING The best way to install these transducers is to loosely assemble all of the parts first, place the transducer's bracket against the transom and see if you can move the transducer so that it's parallel with the ground. The following instructions sometimes vary depending on the mounting bracket that came with your transducer. Single-frequency Skimmers come with a one-piece stainless steel bracket, while dual-frequency Skimmers come with a two-piece plastic mounting bracket. Use the set of instructions that fits your model. 1. Assembling the bracket. A. One-piece bracket: Press the two small plastic ratchets into the sides of the metal bracket as shown in the following illustration. Notice there are letters molded into each ratchet. Place each ratchet into the bracket with the letter "A" aligned with the dot stamped into the metal bracket. This position sets the transducer's coarse angle adjustment for a 14 transom. Most outboard and stern-drive transoms have a 14 angle. 10

Align plastic ratchets in bracket.
B. Two-piece bracket: Locate the four plastic ratchets in the transducer's hardware package. Press two ratchets into the sides of the plastic bracket and two on either side of the transducer as shown in the following illustrations. Notice there are letters molded into each ratchet. Place the ratchets into the bracket with the letter "A" aligned with the alignment mark molded into the bracket. Place the ratchets onto the transducer with the letter "A" aligned with the 12 o'clock position on the transducer stem. These positions set the transducer's coarse angle adjustment for a 14 transom. Most outboard and stern-drive transoms have a 14 angle.
Alignment letters Alignment positions
Transducer Transducer bracket Insert and align ratchets.

Transducer bracket

Transducer

Ratchet

Add ratchets to bracket and transducer.
2. Aligning the transducer on the transom. A. One-piece bracket: Slide the transducer between the two ratchets. Temporarily slide the bolt though the transducer assembly and hold it against the transom. Looking at the transducer from the side, check to see if it will adjust so that its face is parallel to the ground. If it does, then the "A" position is correct for your hull. If the transducer's face isn't parallel with the ground, remove the transducer and ratchets from the bracket. Place the ratchets into the holes in the bracket with the letter "B" aligned with the dot stamped in the bracket. Reassemble the transducer and bracket and place them against the transom. Again, check to see if you can move the transducer so it's parallel with the ground. If you can, then go to step 3A. If it doesn't, repeat step 2A, but use a different alignment letter until you can place the transducer on the transom correctly.

Ratchets

Insert bolt and check transducer position on transom.
B. Two-piece bracket: Assemble the transducer and bracket as shown in the following figure. Temporarily slide the bolt though the transducer assembly but don't tighten the nut at this time. Hold the assembled transducer and bracket against the transom. Looking at the transducer from the side, check to see if it will adjust so that its face is parallel to the ground. If it does, then the "A" positions are correct for your hull. If the transducer's face isn't parallel with the ground, remove and disassemble the transducer and ratchets. Place the ratchets into the bracket holes with the letter "B" aligned with the bracket alignment mark. Place them on the transducer aligned with the 12 o'clock position on the transducer stem. Reassemble the transducer and bracket and place them against the transom. Again, check to see if you can move the transducer so it's parallel with the ground. If you can, then go to step 3B. If it doesn't, repeat step 2B, but use a different alignment letter until you can place the transducer on the transom correctly.

Other Free Training Aids The sonar options section discusses Fish I.D., fish alarms and other features in greater detail. If you or a friend has Internet access, you can also learn more about interpreting what you see on your sonar screen. Visit our web site, WWW.LOWRANCE.COM. Be sure to check out the free Sonar Tutorial, which includes animated illustrations and more pictures of actual sonar returns, all described in detail. There's even a "printer friendly" version of the tutorial available on our web siteit makes a great supplement to this operation manual! For the ultimate training aid, be sure to download the free emulator software for your unit. Aside from being just plain fun, this program can help you learn both basic and advanced operations without burning boat fuel! Lowrance is the first sonar manufacturer to provide this type of training tool for customers. This PC application simulates the actual sonar unit on your computer. You can run it from your computer keyboard or use your mouse to press the virtual keys. Easy download and installation instructions are available on our web site.
Free training emulator is available for your unit on our web site.
Section 4: Sonar Options & Other Features
Material in this section is arranged in alphabetical order. ASP (Advanced Signal Processing) The ASP feature is a noise rejection system built into the sonar unit that constantly evaluates the effects of boat speed, water conditions and interference. This automatic feature gives you the best display possible under most conditions. The ASP feature is an effective tool in combating noise. In sonar terms, noise is any undesired signal. It is caused by electrical and mechanical sources such as bilge pumps, engine ignition systems and wiring, air bubbles passing over the face of the transducer, even vibration from the engine. In all cases, noise can produce unwanted marks on the display. The ASP feature has four settings Off, Low, Medium and High. If you have high noise levels, try using the "High" ASP setting. However, if you are having trouble with noise, we suggest that you take steps to find the interference source and fix it, rather than continually using the unit with the high ASP setting. There are times when you may want to turn the ASP feature off. This allows you to view all incoming echoes before they are processed by the ASP feature.

At left, Sonar Menu with Sonar Features selected. In the Sonar Features menu, Noise Rejection is selected with ASP in the default low setting (center, dual-frequency menu; at right, single-frequency menu).
To change the ASP level: 1. From the Sonar Page, press MENU| to SONAR FEATURES|ENT. 2. Press to NOISE REJECTION|ENT. 3. Press or to select a setting, then press ENT. 4. To return to the previous page, press EXIT|EXIT. 43

Alarms

This unit has three different types of sonar alarms. The first is the Fish Alarm. It sounds when the Fish I.D. feature determines that an echo is a fish. Another alarm is the Zone Alarm, which consists of a bar on the side of the screen. Any echo on the chart that appears inside this bar triggers this alarm. The last alarm is the Depth Alarm, which has both a Shallow and a Deep setting. Only the bottom signal will trigger this alarm. This is useful as an anchor watch, a shallow water alert or for navigation. Depth Alarms The depth alarms sound a tone when the bottom signal goes shallower than the shallow alarm's setting or deeper than the deep alarm's setting. For example, if you set the shallow alarm to 10 feet, the alarm will sound a tone if the bottom signal is less than 10 feet. It will continue to sound until the bottom goes deeper than 10 feet. The deep alarm works just the opposite. It sounds a warning tone if the bottom depth goes deeper than the alarm's setting. Both depth alarms work only off the digital bottom depth signals. No other targets will trip these alarms. These alarms can be used at the same time or individually.
At left, Main Menu and Sonar Alarms command. At right, the Sonar Alarms menu. To adjust and turn on the shallow alarm: 1. Press ALARM.
2. Press to SHALLOW ALARM DEPTH|ENT. 3. Press or to change the first number, then press to move the cursor to the next number and repeat until the depth is correct, then press ENT. 4. Press to SHALLOW ALARM ENABLED|ENT|EXIT. 44
5. To turn off the alarm, press ALARM|ENT|EXIT. To switch to a different depth setting, open the Sonar Alarms menu and repeat the instructions in step 3 above.
To adjust and turn on the deep alarm: 1. Press ALARM.
2. Press to DEEP ALARM ENABLED| to DEEP ALARM DEPTH|ENT. 3. Press or to change the first number, then press to move the cursor to the next number and repeat until the depth is correct, then press ENT. 4. Press to DEEP ALARM ENABLED|ENT|EXIT. 5. To turn off the alarm, press ALARM| to DEEP ALARM ENABLED|ENT|EXIT.
To switch to a different depth setting, open the Sonar Alarms menu and repeat the instructions in step 3 above. Zone Alarm The zone alarm is triggered when any echo passes inside the zone alarm bar, shown on the right side of the screen.

At left, Sonar Page menu with Chart Speed command selected. At right, Chart Speed Control Bar.
If you do experiment with chart speed, remember to reset it to maximum when you resume trolling or moving across the water at higher speed. To change chart speed: 1. From the Sonar Page, press MENU| to CHART SPEED|ENT. 2. The Chart Speed Control Bar appears. Press to decrease chart 47
speed; press to increase chart speed. 3. When it's set at the desired level, press EXIT.

Contrast

Depth Cursor
The depth cursor consists of a horizontal line with a digital depth box on the right side. The numbers inside the box show the depth of the cursor.

Cursor line Depth box

At left, Sonar Page menu with Depth Cursor command selected. At right, sonar chart with the depth cursor active. The line indicates the large fish is 34.64 feet deep.
The cursor can be moved to any location on the screen, letting you pinpoint the depth of a target. 1. From the Sonar Page, press MENU| to DEPTH CURSOR|ENT. 2. The depth cursor appears. Press to lower the cursor line; press to raise the cursor line. 3. To clear the depth cursor, press EXIT.

Depth Range - Automatic

When turned on for the first time, the bottom signal is automatically placed in the lower half of the screen. This is called Auto Ranging and is part of the automatic function. However, depending upon the bottom depth and the current range, you can change the range to a different depth. To do this: 48
1. From the Sonar Page, press MENU| to DEPTH RANGE|ENT.
At left, Sonar Page menu with Depth Range command selected. At right, the Depth Range Control Scale.
2. The Depth Range Control Scale appears. Press or to select a different depth range. a black bar highlights the selected range. Range numbers in gray cannot be selected. 3. When the new range is selected, press EXIT to clear the menu.

Depth Range - Manual

You have complete control over the range when the unit is in the manual mode. There are 16 depth ranges, from 5 feet to 4,000 feet.

To switch to Manual Depth Range:
1. First, turn off automatic depth range. From the Sonar Page, press MENU| to AUTO DEPTH RANGE|ENT. 2. Press to DEPTH RANGE|ENT and the Depth Range Control Scale appears. 3. Press or to select a different depth range. a horizontal black bar highlights the selected range. 4. When the new range is selected, press EXIT to clear the menu.
To turn Auto Depth Range on again: 1. From the Sonar Page, press MENU| to AUTO DEPTH RANGE|ENT|EXIT.
NOTE: The sonar's depth capability depends on the transducer installation, water and bottom conditions, and other factors.
Depth Range - Upper and Lower Limits
Virtually any segment of the water column can be displayed by using the upper and lower limit feature. This lets you pick the shallow and deep depth range limits that are shown on the screen, provided there is at least 10 feet between the upper and lower limit you select. For example, a range from 12 feet to 34 feet could be used. Changing the upper and lower limits gives you far greater control over 49
the depth range. This feature lets you "zoom in" the display in almost unlimited combinations. Nearly any segment of the water column, from the surface to the bottom can be shown. This enlarges the sonar targets to best suit your fishing needs and water conditions.
At left, Sonar Page Menu with Upper and Lower Limits command selected. At right, Sonar Chart Limits menu, with Upper Limit selected.
To change the upper and lower limits: 1. From the Sonar Page, press MENU| to UPPER AND LOWER LIMITS|ENT. The Sonar Chart Limits menu appears, with Upper Limit selected. 2. To set the upper limit, press ENT. Press or to change the first number, then press to move the cursor to the next number and repeat until the depth is correct, then press EXIT. 3. To set the lower limit, press to LOWER LIMIT|ENT. Press or to change the first number, then press to move the cursor to the next number and repeat until the depth is correct, then press EXIT|EXIT|EXIT.
Fish arches Area "zoomed"
Normal display, in auto depth range mode, left. At right, display "zoomed" with Upper and Lower Limits focusing on the portion of the water column from 20 feet to 40 feet deep. In the "zoomed" image, note the target definition at lower left, showing a fish holding just above the structure. At top right, two game fish are attacking a school of bait fish.

Fig. 1 A

Fig. 1 B
Many fish arches visible Fig. 2 A Fish arches above structure
Fewer fish symbols visible Fig. 2 B No fish shown
FasTrack graph confirms fish above structure At left, figures 1A and 2A show Sonar Page in normal chart mode. At right, figures 1B and 2B show the same underwater scene with Fish I.D. turned on. Note how arches are replaced with symbols.
To turn the Fish I.D. feature on: 1. From the Sonar Page, press MENU| to SONAR FEATURES|ENT. 2. Press to FISH SYMBOLS|ENT|EXIT|EXIT. To turn off Fish I.D., repeat the instructions in step 2.

FishTrack

The FishTrack feature shows the depth of a fish symbol when it appears on the display. This lets you accurately gauge the depth of targets. This feature is available only when the Fish I.D. feature is on. The default setting for FishTrack is off.
To turn on FishTrack: (Note: These instructions will turn on FishTrack and Fish I.D. at the same time.) 1. From the Sonar Page, press MENU| to SONAR FEATURES|ENT. 2. Press |then press to FISH DEPTHS|ENT|EXIT|EXIT. To turn off FishTrack, repeat the instructions in step 2. Turning off FishTrack in this manner will not turn off Fish I.D. symbols.
Symbols with FishTrack depths
Sonar Features menu with Fish I.D. Depths selected (at left, dualfrequency menu; center, single-frequency menu). When the check box to the left is checked, the feature is on. At right, Sonar Page showing Fish I.D. symbols and FishTrack depths turned on.

FishReveal

When displaying actual sonar returns, the FishReveal feature uses 10 levels of gray tones to show fish targets hidden by surface clutter, thermoclines, weed beds and other cover. The normal mode of operation (with FishReveal turned off) shows the weakest echoes as black and the strongest echoes in light gray. Since all weak echoes are black, fish arches show boldly against the white background. The drawback is that all weak echoes such as thermoclines are also emphasized. This can make it hard to distinguish fish signals inside thermoclines or other cover. In FishReveal mode, the weakest echoes are white and the strongest echoes are black. Echoes in between vary in gray in proportion to their signal strength. The Grayline control determines the range for black to white. Also note that when using FishReveal, we recommend that you turn off Auto Sensitivity and turn up Sensitivity to near maximum.
Sonar Chart Mode command with FishReveal selected (at left, dual-frequency menu; at right, single-frequency menu).
To turn FishReveal on: 1. From the Sonar Page, press MENU| to SONAR FEATURES|ENT. 2. Press |then press to SONAR CHART MODE|ENT| to FISHREVEAL|ENT. 3. Press EXIT| to AUTO SENSITIVITY|ENT| to SENSITIVITY|ENT. 4. Press until the Sensitivity Control Bar reads 100% (or close to it), then press EXIT. (If you reach the maximum limit, a tone sounds.)
Fish not visible Fish arch

Sonar chart with Overlay Data turned on. This example shows Depth, Water Temperature and the Water Speed of the boat.
Ping Speed & HyperScroll
Ping Speed controls the rate at which the transmitter and transducer broadcast sonar sound waves pings into the water. The unit has a default ping speed of 50 percent. At normal boating speeds, this automatically provides enough return echoes to refresh the screen and scroll the chart at maximum chart speed. However, when you are running at high speeds, or just want the fastest possible screen update, you may want to use the HyperScroll feature. When you change the Ping Speed to any setting greater than 50 percent, the unit automatically enters HyperScroll mode. These faster ping rates allow you to maintain a high-detail picture on the screen, and the screen refresh rate and chart scroll speed can keep pace with the boat as it moves quickly over the bottom terrain. When using HyperScroll, you may also need to manually decrease the sensitivity for optimum performance. Depending on water depth and other conditions, HyperScroll may cause a second bottom echo to return to the transducer during the next ping cycle, or sounding. This can result in a large amount of clutter appearing on the screen. If this occurs, just decrease the sensitivity to a level that eliminates the clutter. When you turn HyperScroll off, you can return to your original sensitivity level.
At left, Sonar Menu with Ping Speed command selected. Ping Speed Control Bar, right, at default setting.
To change Ping Speed: 1. From the Sonar Page, press MENU| to PING SPEED|ENT. 2. The Ping Speed Control Bar appears. Press to increase ping speed; press to decrease ping speed. When it's set at the desired level, press EXIT. 61
To adjust Sensitivity: 1. From the Sonar Page, press MENU|ENT. 2. The Sensitivity Control Bar appears. Press to decrease sensitivity; press to increase sensitivity. When it's set at the desired level, press EXIT. (When you reach the maximum or minimum limit, a tone sounds.) To turn off HyperScroll: 1. From the Sonar Page, press MENU| to PING SPEED|ENT. 2. The Ping Speed Control Bar appears. Press to decrease ping speed to 50 percent. When it's set at the desired level, press EXIT. When you boost ping speed and switch into HyperScroll, the width of the FasTrack bar graph display doubles in width at the right side of the screen. The allows you to better see the virtually instantaneous sonar returns, just as you would on a flasher sonar unit. For more information on FasTrack, see it's entry in this section.

Pop-up Help

Help is available for virtually all of the menu labels on this unit. By highlighting a menu item and leaving it highlighted for a few seconds, a "pop-up" message appears that describes the function of the menu item. This feature is on by default. To set up Popup Help: Press MENU|MENU| to POPUP HELP. With the option highlighted, press ENT to check it (turn on) and uncheck it (turn off.) After the option is set, press EXIT to return to the page display.
Main Menu, left, with Pop-up Help command highlighted. At right, this example shows the Pop-up Help message for the Calibrate Water Speed command, located on the Main Menu.

Reset Options

This command is used to reset all features, options and settings to their original factory defaults. This is useful when you have changed several settings and want to return the unit to basic automatic operation. 1. Press MENU|MENU| to RESET OPTIONS|ENT. 2. Press to YES|ENT. 3. All the menus are cleared and all options are returned to the factory settings.
At left, Main Menu with Reset Options command selected. At right, the Reset Options dialog box, with "Yes" selected.

Reset Water Distance

The sonar chart's Digital Data display option includes a window that shows distance traveled, called Water Distance ("W Distance"). This information is calculated from an optional water speed sensor. The Water Distance window can be reset to zero using the Reset Water Distance command. Press MENU|MENU| to RESET WATER DISTANCE|ENT. The menus are cleared and the water distance is reset to 0.00.
Screen Contrast and Brightness
To access the Screen menu, press MENU|MENU|ENT.

Once in the Screen menu:

To adjust the display's contrast: The CONTRAST slider bar is already selected. Press or to move the bar. The left end of the scale is minimum contrast; the right end is maximum contrast. 63
Screen Command, left, and Screen Menu with Contrast bar selected, right.
To adjust the display's brightness: Press to BRIGHTNESS. Press or to move the bar. The left end of the scale is minimum contrast; the right end is maximum contrast. To adjust the screen's display mode: Press to DISPLAY MODE|ENT|press or to select mode|EXIT.

Sonar Menu with Stop Chart command selected. The box is unchecked, indicating that the chart is scrolling across the screen.

Surface Clarity

The markings extending downward from the zero line on the chart are called "surface clutter." These markings are caused by wave action, boat wakes, temperature inversion and more. The surface clarity control reduces or eliminates surface clutter signals from the display. It does this by changing the sensitivity of the receiver, decreasing it near the surface and gradually increasing it as the depth increases. There are three levels of surface clarity available: low, medium, or high. It can also be turned off. The default level is off. To adjust the Surface Clarity level: 1. From the Sonar Page, press MENU| to SONAR FEATURES|ENT.
Sonar Features menu with Surface Clarity selected (at left, dualfrequency menu; at right, single-frequency menu).
2. Press to SURFACE CLARITY|ENT. 3. Press or to select clarity level|EXIT|EXIT|EXIT.
In the illustration at left, Surface Clarity is turned off. The right view shows Surface Clarity set at High.
Transducer Type (X126DF and X136DF only)
The dual-frequency units include the TRANSDUCER TYPE command. With this option you can tell your unit what type of transducer you're using, so that it can properly interpret the signals it's receiving. To change your transducer type, press MENU|MENU| to TRANSDUCER TYPE|ENT. Select the appropriate transducer type and press ENT|EXIT|EXIT.
At left, Main Menu showing Transducer Type command selected. At right, the Transducer Type menu, showing your three options.

Units of Measure

This menu sets the speed and distance (statute or nautical miles, meters), depth (feet, fathoms, or meters) and temperature (degrees Fahrenheit or Celsius). To change the units: Press MENU|MENU| to UNITS OF MEASURE|ENT.
Main Menu, left, Units of Measure Menu, right.
To set Speed/Distance Unit of Measure: Press or to change the Speed/Distance, then press ENT. After the option is set, press EXIT|EXIT|EXIT to return to the page display.

LOWRANCE ELECTRONICS 12000 E. SKELLY DRIVE, TULSA, OK 74128 (800) 324-1356

How to Obtain Service

in the USA:
We back your investment in quality products with quick, expert service and genuine Lowrance parts. If you're in the United States and you have technical, return or repair questions, please contact the Factory Customer Service Department. Before any product can be returned, you must call customer service to determine if a return is necessary. Many times, customer service can resolve your problem over the phone without sending your product to the factory. To call us, use the following toll-free number:

800-324-1356

8 a.m. to 5 p.m. Central Standard Time, M-F
Lowrance Electronics may find it necessary to change or end our shipping policies, regulations, and special offers at any time. We reserve the right to do so without notice.

in Canada:

If you're in Canada and you have technical, return or repair questions, please contact the Factory Customer Service Department. Before any product can be returned, you must call customer service to determine if a return is necessary. Many times, customer service can resolve your problem over the phone without sending your product to the factory. To call us, use the following toll-free number:

800-661-3983

905-629-1614 (not toll-free)
8 a.m. to 5 p.m. Eastern Standard Time, M-F
outside Canada and the USA:
If you have technical, return or repair questions, contact the dealer in the country where you purchased your unit. To locate a dealer near you, visit our web site, www.lowrance.com and look for the Dealer Locator.
Accessory Ordering Information for all countries
To order Lowrance accessories such as power cables or transducers, please contact: 1) Your local marine dealer or consumer electronics store. Most quality dealers that handle marine electronic equipment or other consumer electronics should be able to assist you with these items. To locate a Lowrance dealer near you, visit our web site, www.lowrance.com and look for the Dealer Locator. Or, you can consult your telephone directory for listings. 2) U.S. customers: LEI Extras Inc., PO Box 129, Catoosa, OK 74015-0129 Call 1-800-324-0045 or visit our web site www.lei-extras.com. 3) Canadian customers can write: Lowrance/Eagle Canada, 919 Matheson Blvd. E. Mississauga, Ontario L4W2R7 or fax 905-629-3118.

Shipping Information

If it becomes necessary to send a product for repair or replacement, you must first receive a return authorization number from Customer Service. Products shipped without a return authorization will not be accepted. When shipping, we recommend you do the following: 1. Please do not ship the knobs or mounting bracket with your unit. 2. If you are sending a check for repair, please place your check in an envelope and tape it to the unit. 3. For proper testing, include a brief note with the product describing the problem. Be sure to include your name, return shipping address and a daytime telephone number. An e-mail address is optional but useful. 4. Pack the unit in a suitable size box with packing material to prevent any damage during shipping. 5. Write the Return Authorization (RA) number on the outside of the box underneath your return address. 6. For your security, you may want to insure the package through your shipping courier. Lowrance does not assume responsibility for goods lost or damaged in transit.

Cable connections for Lowrance X125 and X126DF, March 25, 2004 Sockets with blue socket nuts, and cable plugs with blue locking collars are NMEA 2000 connection types. However, the X125 and X126DF do not have a NMEA 2000 network socket or a communications port. These units cannot connect to a NMEA 2000 network and cannot transmit NMEA 0183 data. The NMEA 0183 data cable, the NMEA 2000 power cable and the white speaker wire are unused and should be capped with wire nuts or electrical tape.

Sonar unit rear view

PWR/DATA
Sonar socket Blue Power/Data socket
NMEA 0183 Data Cable. Four wires: blue, orange, yellow, shield (bare). Cable label says "RS-232 COMM."
SP-BL speed sensor. This is packed with the X126DF and is optional for the X125.
NMEA 2000 Power Cable. Three wires: red, black, shield (bare). Cable label says "NMEA 2000 Power."
Main Power Supply Cable. Cable has no label, but is thickest of the three. Three wires red (+), black ( ground), white. White is external speaker wire, not used in these units.
Skimmer transducer with built-in temp sensor
This figure corrects the drawings on pages 21 and 25 in the X125/X126DF manual, part 988-0151-171. It is a large-view supplement to the manual's Addendum I, part 988-0151-201.