Section 12. Minn Kota Universal Sonar

Minn Kota Universal Sonar Models
01/13/04
Section 12.
Minn Kota Universal Sonar
Minn Kota Universal Sonar motors are serviced in the same manner as their non-Universal Sonar
counterparts. Consult the appropriate section of the Minn Kota Service Manual for the step-by-step
trouble shooting and repair procedures applicable to the motor being serviced.
This trouble-shooting section DOES NOT take the place of the specific sonar unit’s troubleshooting guide. Consumers should consult their owner’s manual for their sonar unit for all
depth finder problems.
A capacitance meter and a good quality multi-meter (VOM) are needed to test the transducer and
cable installed in the Minn Kota Universal Sonar Motors. We recommend using a Waveteck
Meterman model CR50. This meter can be purchased at most major electronics suppliers. (Some
better multi-meters may also be capable of measuring capacitance.)
Please note that the transducer is held into the Minn Kota lower unit with tamper-resistant, torx-head
screws (T-15). These are torqued to 12-15 inch/pounds. The Minn Kota factory warranty will be
voided if the consumer tampers with these screws!
Case I. Sonar display blacks out while trolling motor is running.
(This case refers to suggestions the customer should try with the sonar unit and with his boat wiring.)
Step 1. Consumer should refer to the user’s manual for the sonar display configuration options. (Many sonar
displays have noise reduction options within their menus.)
Step 2. Reduce gain of sonar display until an adequate display is visible.
Step 3. Determine wiring configuration of the boat
A.
If the power leads of the sonar display are routed next to the power leads for the trolling
motor for a great distance, separate the leads as much as possible.
Case II. Sonar unit not receiving bottom reading.
(Be sure sonar unit is on current list of models compatible with Universal Sonar) see page 12-4
Step 1. Customer should first refer to the sonar unit’s owner’s manual for its specific trouble-shooting guide.
A.
If customer still has the original transducer that came with the sonar unit; he can use this to
determine if the sonar unit faulty or if the Universal transducer is at fault.
A-1.
If sonar works properly with original transducer; proceed to Step 2.
A-2.
If sonar still does not receive bottom reading, problem lies in sonar unit.
Step 2. Verify capacitance measures according to the following picture (Figure 1, page 12-3) and chart (Chart
A, page 12-3).
A.
Measure the capacitance of the transducer at the extension cable plug end that exits the motor
coil cord (PD/AP and Genesis models) or footpedal (Maxxum foot-control models) using
your capacitance meter as per Figure 1. Touch the red and black probes from your
capacitance meter to the correct pins on the plug (transducer + and -). For proper orientation,
be sure the connector key (ridge) is at the top of the plug as in Figure 1, page 12-3 (just above
and between the red and black probes).
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Minn Kota Universal Sonar Models
A-1.
01/13/04
If the capacitance falls within the minimum and maximum allowable limits (per
Chart A) for the specific Minn Kota Universal Sonar motor being tested, go to Step 3.
A-2.
If the capacitance falls outside the minimum and maximum allowable limits, go to
Step 4.
Step 3. Perform a continuity check on the adapter cable. (This is the short cable that goes from the sonar unit
to the extension cable plug end.)
A.
Identify Sonar make, then consult pin-out diagram for that adapter cable (starting on page 127). Check continuity from Minn Kota pins to Sonar adapter plug pins.
A-1.
If the adapter has continuity through all three pins, the problem lies with the sonar
unit (not the Minn Kota Universal Sonar motor). The customer should refer to his
sonar unit owner’s manual.
A-2.
If the adapter does not have continuity, adapter is defective. Replace adapter.
Procedure is complete.
Step 4. Measure the capacitance of the Universal transducer assembly.
A.
Remove the control box cover.
B.
Disconnect extension cable and the transducer plug assembly in the control box.
C.
Take the same type of capacitance reading (as above) on the Universal transducer plug
D.
(exiting the shaft of the motor).
Refer to Chart A for the particular Universal Sonar model being tested to find the Minn Kota
transducer part number (P/N). Cross-reference this part number with Chart B (page 12-3) to
find the minimum and maximum specifications for the particular Universal transducer
assembly tested. The capacitance for this reading should fall between the minimum and
maximum allowable limits per Chart B, and Capacitance Chart and Pin-Out Diagram on
page 12-5.
D-1.
If the capacitance falls within the minimum and maximum allowable limits for the
specific Minn Kota Universal Sonar motor being tested, go to Step 5.
D-2.
If the capacitance falls outside the minimum and maximum allowable limits, go to
Step 6.
Step 5. Using your VOM, perform a continuity test through the extension cable (see page 12-6 for pin-out
diagram).
A.
If there is not continuity through all the wires in the extension cable, the extension cable is
defective. Replace extension cable and re-test capacity per Step 2.
B.
If there is continuity through the extension cable, the problem is not with the transducer and
plug assembly or with the extension and plug assembly. Re-check continuity of the adapter
plug (Step 3) or suspect problem with sonar unit.
Step 6. Replace the front-end bell / transducer assembly on the motor and re-test capacitance per above
procedures.
NOTE: on 4” diameter motors the transducer cable is held in place in the center section with a metal
clip between the magnets. For ease of disassembly and reassembly, we recommend that the motor be
removed from the shaft. On 3 5/8” diameter motors you will need to replace the shaft of the motor,
also.
A.
Retest per Step 2.
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Minn Kota Universal Sonar Models
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connector key
(ridge)
Figure 1
NOTE: you cannot order transducer replacements by the P/N listed below. Order end bell/transducer assembly per
parts manual schematics.
Transducer Capacit.
(pF)
Family
Model
Shaft Length Product Code
Transducer
Extension Cable minimum maximum
P/N
P/N
55
48
1357397
987-003
221-1405 (9 ft)
798.34
1230.10
PD
55
54
1357398
987-004
221-1405
816.87
1252.74
55
60
1357399
987-004
221-1405
816.87
1252.74
55
48
1366019
987-003
221-1405
798.34
1230.10
AutoPilot
55
54
1366023
987-004
221-1405
816.87
1252.74
65
54
1366039
987-004
221-1405
816.87
1252.74
65
60
1366042
987-004
221-1405
816.87
1252.74
55
45
1352711
987-003
221-1405
798.34
1230.10
Genesis
55
52
1352713
987-004
221-1405
816.87
1252.74
74
45
1352721
987-004
221-1405
816.87
1252.74
74
60
1352731
987-005
221-1405
847.74
1290.47
65
42
1368361
987-003
221-1400 (14.5 ft)
930.06
1396.11
Maxxum
65
52
1368363
987-004
221-1400
945.58
1418.75
74
42
1368371
987-004
221-1400
948.58
1418.75
74
52
1368272
987-004
221-1400
948.58
1418.75
74
62
1368374
987-005
221-1400
979.45
1456.48
Chart A
Description
Transducer
P/N
987-003
987-004
987-005
Chart B
12 - 3
Capacitance (pF)
minimum maximum
578.14
945.87
596.66
968.50
623.53
1006.23
Minn Kota Universal Sonar Models
01/13/04
With the proper Minn Kota adapter cable the Universal Sonar transducer will be compatible
with the following sonar units:
Bottom Line:
Tournament NCC 5300, Tournament NCC6500
Minn Kota Adapter: MKR-US-2
Tournament 1250, Tournament 3310, Tournament 4300, Tournament 3100, Tournament 4100,
Tournament 5100, Tournament NCC6300, Tournament 320MAX, Tournament 480MAX
Minn Kota Adapter: MKR-US-3
Eagle:
FishEasy 2, FishEasy 2P (manufactured prior to 2003), FishEasy 2T (manufactured prior to 2003), FishMark 160, FishMark
240, TriFinder 2
Minn Kota Adapter: MKR-US-5
Accura 240, Accura 240FLW, Fish Easy, Fish Easy ST, Fish ID 128, Optima, Strata 128, Strata 128 Plus,
Strataview 128, Trifinder, Trifinder FLW, Ultra Classic, Ultra Classic Plus
Minn Kota Adapter: MKR-US-6
Cuda 128, Cuda 168, Cuda 168EX, Cuda 240GPS, FishEasy 2 (manufactured after 2002), FishEasy 2T (manufactured
after 2002), FishElite 320, FishElite 480DF, FishMark 320, FishMark 480, SeaFinder 240DF, SeaFinder 320DF,
SeaCharter 480DF
Minn Kota Adapter: MKR-US-9
Garmin:
Fishfinder 100, Fishfinder 160, Fishfinder 240, Fishfinder 250, Fishfinder 250C, Fishfinder 320C,
GPSMAP 168, GPSMAP 178C, * Fishfinder 80, *Fishfinder 120 (* with optional Garmin part number
010-10145-00, sold separately)
Minn Kota Adapter: MKR-US-1
Humminbird:
100SX, 405SX, LCRW, N525, Tracker Pro 160, Boater’s World Pro Angler 400+, Legend 1000, Legend 2000
Minn Kota Adapter: MKR-US-4
Legend 3000, 400TX, 300TX, Piranha 1, Piranha 2, Piranha 3, Piranha 4, Piranha 5, PiranhaMAX 10,
PiranhaMAX 15, PiranhaMAX 20, Matrix 10, Matrix 15, Matrix 17, Matrix 20, Matrix 25, Matrix 27,
Matrix 35, Matrix 37, Matrix 55, Matrix 65, Matrix, 67, Matrix 97
Minn Kota Adapter: MKR-US-8
Lowrance:
LCX-15C, LCX-15CI, LCX-15CT, LCX-15MT, LCX-16CI, LCX-16CT, LCX-18C, LCX-19C, LCX-104C,
LMS-240, LMS-320, LMS-320DF, X51, X-58DF, X71, X-87, X-88DF, X91, X-97, X-98DF, 100C,
X-105C DF, X125, X-126 DF, X-135, X-136 DF, LMS-480, LMS-480 DF, LMS-330C, LMS-335C DF
Minn Kota Adapter: MKR-US-5
X24, X28, X29, X38, X48, X49, X58, X65, X75, X85
Minn Kota Adapter: MKR-US-6
X-47, X-47EX, X-67C, M-56, M-68C
Minn Kota Adapter: MKR-US-9
Vexilar:
FL-8, FL-8 SE, FL-8 SLT, FL-10, FL-18CLC-200 Minn Kota Adapter: MKR-US-7
Zercom:
Z160
Minn Kota Adapter: MKR-US-4
For the most current list of sonar units, please visit our web site at www.minnkotamotors.com or call Minn Kota
Technical Services at (800) 227-6433.
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Minn Kota Universal Sonar Models
01/13/04
Minn Kota Universal Sonar Transducer & Cable Assembly
Note: Take transducer capacitance readings across the TX(-) and TX(+) pins.
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Minn Kota Universal Sonar Models
Minn Kota Cable Extension
Part No. 2211400 and 2211405
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Minn Kota Universal Sonar Models
Garmin Adapter Cable
Item No. 1852050 (MKR-US-1)
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Minn Kota Universal Sonar Models
Bottom Line 9-Pin Adapter Cable
Item No. 1852051 (MKR-US-2)
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Minn Kota Universal Sonar Models
Bottom Line 7-Pin Adapter Cable
Item No. 1852052 (MKR-US-3)
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Minn Kota Universal Sonar Models
Humminbird / Zercom (Techsonic) Adapter Cable
Item No. 1852053 (MKR-US-4)
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Minn Kota Universal Sonar Models
Lowrance / Eagle Adapter Cable (gray)
Item No. 1852054 (MKR-US-5)
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Minn Kota Universal Sonar Models
Lowrance / Eagle Adapter Cable (black)
Item No. 1852055 (MKR-US-6)
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Minn Kota Universal Sonar Models
Vexilar Adapter Cable
Item No. 1852056 (MKR-US-7)
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Minn Kota Universal Sonar Models
Humminbird (Techsonic) Adapter Cable
Item No. 1852057 (MKR-US-8)
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Minn Kota Universal Sonar Models
Lowrance / Eagle Adapter Cable
Part No. 1852058 (MKR-US-9)
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