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
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