JRC FF50 Service Manual

COLOR LCD FISH FINDER

FF50

SERVICE MANUAL

Document No. 7ZPBS4104

1

General Information

This service manual describes the maintenance and inspection procedures for the
FF50. Prior to the installation, users are requested to read this manual well and
familiarize with its contents so that an optimum function may be derived from the
FF50.

Note that the grounding work is indispensable to prevent electric shock hazards
as well as to ensure the intended function of the set. Don’t try to ignore the
grounding work.

For the operation of the set, refer to the Instruction Manual.

2

Before You Begin

Symbols Used In This Manual

Related Symbols Marks

In this manual, and on the equipment, we use several warning signs to call your attention to
important to items that, if not handled correctly, could present danger to yourself or property.
These warning note classifications are as described below.
Please be fully aware of the importance of these items before using this manual.

Examples of Related Symbol Marks Used in this Manual and on the Unit

Warning Label

You can see the warning label on the top of the unit.
Do you attempt to remove the warning label from the unit or impair or modify it.

Each marks is intended to alert the user to the presence of
prohibited activity. The picture/word in/beside each mark alerts
you to operations that are prohibited.

WARNING
CAUTION

Hot Surface

Prohibition

Each △ mark is intended to alert the user to the presence of
precautions including danger and warning items. The picture in
each △ mark alerts you to operations that should be carefully
performed.

Prohibitions
disassembly

Instruction

Each ●mark is intended to alert the user to the presence of
necessary instructions. The picture in each ● mark alerts you

to operations that must be performed.

Indicates warning items that, if ignored, may
result in serious personal injury or even death.

Indicated cautionary items that, if ignored, may
result in personal injury or physical damage.

3

Usage Hints



When installing this set, be sure to connect
the grounding wire to the grounding
terminal of the set. Otherwise, an electric
shock can result when a failure or leakage
occurred on the set.

Do not damage, break or modify the power
cord.
Placing a heavy load, heating, pulling or
forcibly bending the cord can damage it
resulting in a fire or an electric shock.

Do not use this set at a voltage other than
the supply voltage stated on the set.
Otherwise, a fire, an electric shock or
system failure can result.

Do not touch inside the set with wet hands.
When your hands are wet, don’t try to
connect or disconnect the power cord or
touch the switches. Otherwise, an electric
shock can result.

WARNING

4

When cleaning the surface, do not use any
organic solvent such as thinner or benzene.
Otherwise, the painting on the surface may
be damaged.
For cleaning the surface, remove the dust,
then wipe with clean dry cloth.

Do not bring the set in a cooled state
suddenly into a warm room.
A high voltage may leak due to dew
condensation resulting in a failure. In this
case, use the set after leaving it alone for 30
minutes.

When removing the power cord, be sure to
remove the power cord terminal correctly.
Pulling the power cord can damage it

resulting in a fire or an electric shock.

CAUTION

No

Thinne

benzene

5

Index

General Information･･･････････････････････････････････････････････････････1
Before You Begin･････････････････････････････････････････････････････････2
Usage Hints･･････････････････････････････････････････････････････････････3
Index････････････････････････････････････････････････････････････････････ 5

1. Specifications････････････････････････････････････････････････････････････ 6

2. Component･･････････････････････････････････････････････････････････････8

3. Outline Drawing ･･････････････････････････････････････････････････････････ 9

4. Installing the display unit ･････････････････････････････････････････････････10

5. Circuit Block Diagram ････････････････････････････････････････････････････ 11

6. Parts Layout ････････････････････････････････････････････････････････････13

7. Mechanical Parts List ････････････････････････････････････････････････････16

8. Master Reset and Language Select････････････････････････････････････････18

9. NMEA0183 INPUT/OUTPUT SENTENCES ･････････････････････････････････21

10. SELF TEST･････････････････････････････････････････････････････････････22

6

1. Specifications

Display 6.5 inch Color LCD (TFT)
Resolution 234×320 dots (Screen Size 133 mm× 97 mm)
Presentation 8 or 16 Color Gradation with 2 Patterns
Brightness Control 10 steps
Contrast Control 10 steps
Range Auto or Manual

5 to 1,500 m
10 to 5,000 ft
3 to 1,000 fm

Shift Auto or Manual

0 to 1,000m
0 to 3,000ft

0 to 600fm
Frequency 200 kHz/50 kHz (Dual Frequency)
Power Output 600 W RMS (4,800W P-P)
Gain (Sensitivity) 100 steps
Depth Unit Meter, Feet, Fathom, SP (0.3000 to 1.9999 m)
Speed Unit Knots, Mile/h, Km/h
Noise Suppression Selectable (0 to 15 level)
Interference Rejection Selectable (OFF, IR1, IR2)
STC Selectable (Short, Mid, Long)
Water Temperature 32.0 degree Fahrenheit to 100.0 degree Fahrenheit

(0.0 degree Centigrade to 40.0 degree Centigrade)
Boat Speed 0 to 70 Knots
Trip Log (Only at the STD/ 0 to 999 NM Navigation type 1 or 2)
Display Modes 1) STD (LF or HF)

2) STD (LF)/STD (HF)

3) STD/A-Scope (LF or HF)

4) STD/A-Scope (LF)/STD/A-Scope (HF)

5) STD/Zoom (LF or HF)

6) STD/Auto Zoom (LF or HF)

7) STD/Bottom Lock (LF or HF)

8) STD/Bottom Discrimination (LF or HF)

9) STD/Dual Frequency Mixed

10) STD/Navigation type1 (LF or HF)

11) STD/Navigation type2 (LF or HF)

Simulator Built-In

7

Audible-visual alarms Fish, Shallow, Deep, Temp Upper, Temp Lower,

Temp Rate, Arrival, Anchor, Off Course, DGPS
Waypoints Max. 400 points.
Route plans 10 plans, 40 waypoints per route.
Memory Backup Includes Battery
Option NAVAID Input GPS100/DGPS200 sensor NMEA0183 format
Input Voltage 12 to 24 VDC
Power Consumption Approx. 25 W
Mass (Display Unit) 8.8 lbs (4 kg)
Water Resistance IPx5
Environmental Conditions -10℃ to +50

℃

8

2. Component

When unpacking your FF50, you should find the following standard equipment
in the carton. If any items are missing, please notify your JRC dealer immediately.

Standard Equipment

No Description Model No. Qty. Remarks
1 Fish Finder JFC-500 1
2 Transducer Depends on the 1 See below

Type the item
3 Spares 5ZFAD00362 1 Fuse (3.15A)
4 Power Cable CFQ-6382 1 length 1.5m
5 Ferrite Core 5MBBB00002 1 NF-130
6 Sun Cover MTV302704 1
7 Console Mounting Kit MPTG30716 1
8 Instruction Manual 7ZPBS2106B 1
9 Warranty Card 1

Transducers

Model No. Frequency Remarks
CFT-2501TFA 200 kHz/50 kHz Transom type dual frequency with

speed and temp. sensor

CFT-2501HFA 200 kHz/50 kHz Through hull type dual frequency

with speed and temp. sensor

9

3. Outline Drawing

Unit :inch(mm)

10

4. Installing the display unit

Connecting The Power Supply and Transducer cables

(1) Connecting the Power Cables

1, Use CFQ-6382 for the power cable.
2, Connect the Power cables as indicated below.

Cable Connector pin NO. Polarity
Black 1 ­Red 2 +

3. At powering on,2.5A current is conduced to the FF50 for one second.
Current capacity of circuit breaker, if any , must be suitable for the current.

(2) Power Cable Connecting Procedure For AC specification

1. Connect DC power supply ,then connect the power cable to DC power supply.

2. Don’t use the DC power supply of switching form power supply.

If you use the switching power supply , RX signal is interfered by power supply.

(3) Power Cable and transducer Wiring Procedure

1. Don’t try to bundle the radio equipment coaxial cable and the audio speaker
cable with the Fish finder power cable.

Such practice can generate noise on the radio and audio equipment.

11

5. Circuit Block Diagram

These VR is adjusted in manufacture.
Don’t Remove VR adjustment.

RV600 LCD Flicker Adjustment
RV140, RV141 RX GAIN Adjustment

IC300
32bit
RISC CPU

IC306
LCD Control

T700,701
TR702,703

Inverter

LCD
Interface

TFT LCD
7WSBS7001

J302

J702

DATA

Backlight

PANEL
CCK-829

DPU
CML-595

J303

IC304
Backup RAM

IC301,302
ROM
7DEBS7042
7DEBS7043

IC312
Panel
Interface

BT301
Battery

W401:BLUE

W400 :WHITE

J301

J300

TRX
CMN-526

T202
TX TRANS

PHT480,481
NMEA RX

TR430
PS FET

2SK1620

T430
PS TRANS

7ZCBS7017

TR203,204
TX FET

2SK1316

IC180 RX IC

FL140

RX Receiver

RV600

FL141

RV140

RV141

IC410
PS Control

CD431
TX Rectifier

IC480
NMEA TX

J402 Power Cable

J403 GPS

J404 NMEA I/O

J402 TRANSDUCER

Regulated Voltage

12

13

6. Parts Layout

DPU_UNIT CML-595

Parts side

Solder side

RV600 LCD Flicker Adjustment

J303 FOR PANEL

BT301 Backup
Battery

INVERTOR

HighVoltage

J702 FOR LCD

Backlight

J301&302

FOR CMN-526

14

PS/TRX_UNIT CMN-526

Parts side

Solder side

RV140&141
RX Gain
Adjustment

Don’t Remove

W400&401 For CML-595

15

PANEL_UNIT

Parts side

16

7. Mechanical Parts List

PartsList Page1/1
(ModelNumber) (Title)

FF50(JFC‑500)

COLORLCDFISHFINDER

Item PARTNAME

Qty

PARTNUMBER DESCRIPTION
1 FrontPanelAssy 1 MPBC34289
2 Gasket 1 MTV302538
3 ContactRubber 1 MTV302660
4 LightGuide 1 MTV302664
5 SealdCase 1 MTB347026
6 φ28Knob 1 MPHD30171
7 Cap 1 MPPK30372
8 LCDUnit 1 ‑ H‑7WSBS7001
9 DPUUnit 1 ‑ CML‑595

10 Plate 1 MTB344485
11 RadiationCase 1 MTB349940
12 RubbberPacking 1 MTT305900
13 RadiationSeet 1 MTT306641
14 Bush 1 BRNG00206
15 MainUnit 1 ‑ CMN‑526
16 PanelUnit 1 ‑ CCK‑829
17 RadiationSeet 1 MTT306524
18 Label 1 MPNN37019
19 Label(Warning) 1 MPNN35234A Highvoltage
20 Label(Warning) 1 MPNN35688 Hotsurface
21 RearCabinetAssy MPBX36626

‑1 RearCover 1 MTC300800
‑2 SpongeRubber 2 MTV302756
‑3 RubberSpaser 2 MTT305975

‑4 Seet 1 BRPK05061
22 Bracket 1 MTB344486
23 Knob 2 MPTG30053
24 SunCover 1 MTV302704
25 TappingScrew 8 BRTG04818 φ3x16SUSPtype
26 TappingScrew 13 BRTG03437 φ3x12FeZMCPtype
27 TappingScrew 4 BRTG04241 φ2.6x6FePtype
28 TappingScrew 7 BRTG03095 φ3x8FeZMCBtype
29 Screw 8 BSNA03006S M3x6FeZMC
30 Screw 1 BSBB04010B BB4x10Bs
31 Screw 1 MPTG30149 ForSetting
32 RubberWasher 8 MTT301458A
33 Washer 11 BSLW03000B LW3Bs
34 Washer 2 BSFW04000B W4Bs
35 Washer 1 BSSW04000S SW4
36 MountKit 1 MPTG30716
37
38
39
40

17

18

8. Master Reset and Language Select

A MASTER Reset can be performed by either the SOFT
Reset or HARD Reset.
The SOFT Reset restores all set values except the
WAYPOINT data and ROUTE PLAN data to the original
factory set-up values.
The HARD Reset restores all set values to the original

factory- set values and deletes the WAYPOINT and ROUTE

PLAN data.
When you want to keep the WAYPOINT and ROUTE PLAN
data, execute the SOFT reset. When the MASTER reset is
executed, the CUSTOM DEFAULT is initialized to the
factory-set default settings.

When you push to BRT/PWR turn the power on while
pushing CUSTOM and MENU at the same time, the
LANGUAGE SELECT display appears.
Press the JOYSTICK up or down to select a language
and push it in to open the MASTER RESET type select
display.
Press the JOYSTICK up or down to select HARD or SOFT
and push it in to select OK or CANCEL for the selected
language and the reset type.
Press the JOYSTICK to the left or right to select OK and
push it in to execute the MASTER reset.
Select CANCEL and push the in to return to the language

select display.
After the MASTER reset is executed, the FF50 is rebooted

automatically.
To abort the MASTER reset, turn the power off and then
turn the power on again.

Note:

When a backup error occurs, the FF50 enters the MASTER
Reset
mode automatically, and the language select menu opens.
In this case , you cannot abort the MASTER reset. Be sure
not to turn the power off during the MASTER reset.

19

MASTER RESET TABLE

Item

SelectedLanguage

English,Italian

Other

BackLight

10

←

Contrast

5

←

Range

200

60

ZoomRange

x2

←

Shift

0

←

Gain

HF=3.5,LF=3.5

←

DisplayMode

STDDUAL

←

AoutMode

MANUAL

←

FishAlarm

OFF

←

ShallowAlarm

OFF,32

OFF,10

DeepAlarm

OFF,164

OFF,50

TempUpperAlarm

OFF,60.0

OFF,15.6

TempLowerAlarm

OFF,50.0

OFF,10.0

TempRateAlarm

OFF,0.5

OFF,0.2

ArrivalAlarm

OFF,0.01NM

←

AnchorAlarm

OFF,0.01NM

←

OffCourseAlarm

OFF,0.01NM

←

DGPSAlarm

OFF

←

Buzzer

ON

←

Menu

ChartSpeed

9←Noise

0

←

Interference

OFF

←

STC

Short

←

Symbols

OFF

←

SampleBar

ON←Colors

M1

←

Graph

OFF

←

UserColor

seetable1

←

Navigation

Waypoint

seenote1

←

Route

seenote1

←

SequenceMode

Auto

←

FollowRoute

Route1

←

CDIrange

0.1

←

MonitorMode

OFF

←

Installation

Simulator

OFF

←

TempIn

Int

←

SpeedIn

Int←PositionIn

Ant

←

ＰＤＣ

HF=C,LF=C

←

ExpandRangeMode

Ratio

←

GraphScale

DepthGraphScale

center=98、range=196

center=30,range=60

TempGraphScale

center=60、range=40

center=15,range=22

Unit

DepthUnit

FT

MT

YourDepth

1.0000

←

TempUnit

゜F

゜C

SpeedUnit

KTS

←

Calibration

Calib.Temp

0.0

←

Calib.Speed

0.0

←

Draft

0.0←KeelHeight

0.0

←

GainOffset

HF=0,LF=0

←

ResetLog

−

←

MagneticCorr.

0.0゜

←

GPSSetting

Position

N00゜00.000' W000゜00.000'

←

TimeDiffrence

00:00

←

AnntenaHeight

1←GeodeticDatum

WGS‑８４

←

FixMode

AUTO

←

HDOPlevel

10

←

Average

10S

←

ExcludeSatellite

none

←

DGPSSetting

BeaconReceiveMode

AUTO

←

BeaconFrequency

288.0KHZ

←

BaudRate

100bps

←

BottomJudgeLevel

HF=0.0,LF=0.0

←

DefoultSettings

20

DEFOULT USER COLOR TABLE

If you select SOFT RESET for MATER RESET, the data of Waypoint and Route created by
users is not deleted. If you select HARD RESET, all the data of Waypoint and Route settings
is deleted.
After HARD RESET, the Waypoint data: WPT1-7 is preset in the Waypoint list and Route
No.1 list as the reference of simulation. You can change the data according to your use
condition.

sig.level

RGBRGBRGBRGB00010006001000610480480790792071107110790793091009100108010840118011801080108501060106013001306515251520130013079150915015150151508151501515015150151509159015901570157010158015801570157011156015601500150012150015001500150013100010009009001490090090090015800800900900M4

16‑StepGradation

8‑StepGradation

M1M2M3

21

9. NMEA0183 INPUT/OUTPUT SENTENCES
Input sentences

$xxAPA Heading/Track Controller (Autopilot) Sentence ”A ”.
$xxAPB Heading/Track Controller (Autopilot) Sentence ”B ”.
$xxBWC Bearing & Distance to Waypoint
$xxBWR Bearing & Distance to Waypoint - Rhumb Line
$xxGGA Global Positioning System Fix Data
$xxHDG Heading, Deviation & Variation
$xxHDT Heading - True
$xxMTW Water Temperature
$xxRMC Recommended Minimum Specific GPS data
$xxVTG Course Over Ground and Ground Speed
$xxVHW Water Speed and Heading

Output sentences

$SDDBT Depth Below Transducer
$SDDPT Depth
$SDMTW Water Temperature
$SDAPB Heading/Track Controller (Autopilot) Sentence “B”

Necessary to connect the GPS100 or DGPS200

$SDBWC Bearing & Distance to Waypoint

Necessary to connect the GPS100 or DGPS200

$GPGGA Global Positioning System Fix Data

Necessary to connect the GPS100 or DGPS200

$GPRMC Recommended Minimum Specific GPS data

Necessary to connect the GPS100 or DGPS200

22

10. SELF TEST

The FF50 has a built-in self test function with which you can check the operating status of
the FF50 automatically. Moreover, a function of monitoring input NMEA0183 formatted
sentences is attached to the self test function, and you can easily check various data input
from external equipment.
The self test function has the following four functions.

Internal checking function:

Checks DPU and shows OK or NG as the result.
Input data monitoring function:
Displays various input data including GPS/DGPS sensor and
NMEA0183 sentences on the screen.
Panel checking function:
Displays the status of the panel key that has been pushed.
Display checking function:
Displays test patterns such as crosshatch or color pattern.

When you push BRT/PWR to turn the power on while
pushing A UTO and FREQ at the same time, the FF50
enters the SELFTEST mode and the SELFTEST display
appears.

Then ROM and RAM are checked automatically and
various data as well as the
result (OK or NG) appear.
Push any panel key to change the corresponding
indicator from red to blue on the screen. When all
indicators change to blue, the panel check is completed.
After the panel check is completed, push CLR/OFF to
pause the input data display temporarily.
Push CLR/OFF again to resume the display.
When you want to check the NMEA0183 input
sentences, stop the display with this procedure to make
checking easier.
Push MENU to switch the display to test pattern. Each
time you push MENU, the
test pattern changes as long as the power is on.
Turn the power off to end the self test.

Main Office & Plants

Main Office & PlantsMain Office & Plants

Main Office & Plants

●●●●Main Office

Main OfficeMain Office

Main Office

Akasaka Twin Tower(Main)
17-22,Akasaka 2-chome,
Minato-ku,Tokyo 107-8432 JAPAN
Maritime Sales Department
Phone:[phone]
Fax :[phone]
International Business Department
Phone:[phone]
Fax :[phone]
Communications Equipmennt Marketinng
Department
Phone:[phone]
Fax :[phone]

●●●●Mitaka Plant

Mitaka PlantMitaka Plant

Mitaka Plant

1-1,Shimorenjaku 5-chome,Mitaka
Tokyo 181-8510 JAPAN
Phone:[phone]
Fax :[phone]

Overseas Subsidiaries

Overseas SubsidiariesOverseas Subsidiaries

Overseas Subsidiaries

●●●●JRC (UK) Limited

JRC (UK) LimitedJRC (UK) Limited

JRC (UK) Limited

136, 1st Floor, Friars House,
157/168 Blackfriars Road,

London SE18 EZ, U.K.
Phone:[phone]
Fax :[phone]

Overseas Branch Offices

Overseas Branch OfficesOverseas Branch Offices

Overseas Branch Offices

●●●●U.S.A

U.S.AU.S.A

U.S.A....

Japan Radio Co.,Ltd./Seattle Branch
1011 SW Klickitat Way
Bldg.B, Suite 100
Seattle, WA 98134 U. S. A.
Phone:[phone]
Fax :[phone]

Overseas

Overseas Overseas

Overseas
Liaison & Servi

Liaison & ServiLiaison & Servi

Liaison & Service Offices

ce Officesce Offices

ce Offices

● U.S.A

U.S.AU.S.A

U.S.A....

Japan Radio Co.,Ltd.
Nisshin foods Building, Suite 208
2125 Center Avenue, Fort lee N. J. 07024, U. S. A.
Phone:[phone]
Fax :[phone]

●●●●IIIIndonesia

ndonesiandonesia

ndonesia

Japan Radio Co.,Ltd.
GRAHA SURYA INTERNUS 7th F1. (suite 703A)
J1. H.R. Rasuna Said Kav. X-O.
Jakarta 12950, INDONESIA
Phone:[phone]
Fax :[phone]

●●●●Philippines

PhilippinesPhilippines

Philippines
Japan Radio Co.,Ltd.
2320 Taft Avenue
Malate,Manila PHILIPPINES
Phone:[phone]･525-3589
Fax :[phone]

●●●●Thailand

ThailandThailand

Thailand
Japan Radio Co.,Ltd.
Charturong Arphon Building
457 Phra Sumaru Street
Bangkok 10200 THAILAND
Phone/Fax:[phone]

●●●●India

IndiaIndia

India
Japan Radio Co.,Ltd.
Best Western Surya Hotel, Business Centre
New Friends Colony, New Delhi 110065, INDIA
Phone: [phone]･691-9297
Fax : [phone]

●●●●Taiwan

TaiwanTaiwan

Taiwan

Japan Radio Co.,Ltd.
7F No.146,Sung Chiang Road
Taipei TAIWAN
Phone:[phone]
Fax :[phone]

●●●●Spain

SpainSpain

Spain

Japan Radio Co.,Ltd.
Calle Luis Doreste Silva, 50-1-B De Las
Palmas De Gran Canaria SPAIN
Phone:[phone]
Fax :[phone]

●●●●Singapore

SingaporeSingapore

Singapore
Japan Radio Co.,Ltd.
c/o CODAR(PTE.)LTD.
315 Outram Road #11-06/07 Tan Boon Liat
Building Singapore 169074 SINGAPORE
Phone:[phone]
Fax :[phone]

●●●●Greece

GreeceGreece

Greece
Japan Radio Co.,Ltd.
57, Akti Miaouli Piraeus GREECE
Phone: [phone]･429-3305
Fax : [phone]

● Korea

KoreaKorea

Korea
Japan Radio Co.,Ltd.
Room 202, Whadong Bldg. 84-18, 4-GA
Chungang-Dong, Chung-Ku, Pusan, KOREA
Phone: [phone]
Fax : [phone]

Overseas Service Center

Overseas Service CenterOverseas Service Center

Overseas Service Center

●●●●Netherlands

NetherlandsNetherlands

Netherlands

Japan Radio Co.,Ltd.
Cessnalaan 40-42,1119NL Schiphol-Rijk
THE NETHERLANDS
Phone:[phone]
Fax :[phone]

00.12

For further information contact:

HEAD OFFICE &

HEAD OFFICE & HEAD OFFICE &

HEAD OFFICE &

SALES DEPT.

SALES DEPT.SALES DEPT.

SALES DEPT.

Akasaka Twin Tower (Main),
17-22, Akasaka 2-chome, Minato-ku,
Tokyo 107-8432 JAPAN
Phone : [phone]
Fax : [phone]
Telex : 0242-5420 JRCTOK J

MAIN PLANT

MAIN PLANTMAIN PLANT

MAIN PLANT

1- 1, Shimorenjaku 5-chome, Mitaka-shi,
Tokyo 181-8510 JAPAN
Phone : [phone]
Fax : [phone]
Telex : 02822-351 JRCMTK J