Furuno CH-270 Manuale utente
COLOR SEARCHLIGHT SONAR
CH-270
Your Local Agent/DealerYour Local Agent/Dealer
9-52 Ashihara-cho,9-52 Ashihara-cho,
Nishinomi
y
a 662-8580, JAPANNishinomi
y
a 662-8580, JAPAN
Tele
p
hone :Tele
p
hone : 0798-65-21110798-65-2111
Fa
x
Fa
x
0798-65-42000798-65-4200
::
F
IRST EDITION :
F
IRST EDITION : JULJUL.. 20042004
Printed in JapanPrinted in Japan
A
ll ri
g
hts reserved.
A
ll ri
g
hts reserved.
Pub. No.Pub. No. SME-13220-ASME-13220-A
*00015124100**00015124100*
*00015124100**00015124100*
(( KAOKKAOK )) CH-270CH-270 * 0 0 0 1 5 1 2 4 1 0 0 ** 0 0 0 1 5 1 2 4 1 0 0 *
*SME13220A00**SME13220A00*
*SME13220A00**SME13220A00*
* S M E 1 3 2 2 0 A 0 0 ** S M E 1 3 2 2 0 A 0 0 *
CONTENTS
SYSTEM CONFIGURATION................................................................................1
1. FUNCTION OF EACH UNIT
1.1 Display Unit (MU-100C)..................................................................................3
1.2 Control Unit (CH-252)......................................................................................4
1.3 Transceiver Unit (CH-273) ...............................................................................5
1.3.1 CPU Board (06P0258)............................................................................5
1.3.2 TRX Board (06P0241) ...........................................................................6
1.3.3 PWR Board (06P0242)...........................................................................7
1.3.4 PRA Board (06P0259)............................................................................8
2. FUNCTIONAL DESCRIPTION
2.1 Transmission.....................................................................................................9
2.2 Reception..........................................................................................................9
2.3 Raising/Lowering Transducer.........................................................................12
2.4 Tilting Transducer...........................................................................................13
2.5 Training Transducer........................................................................................15
2.6 Braking Tilt/Train Motor ................................................................................17
3. CHECK AND ADJUSTMENT
3.1 Test Points.......................................................................................................18
3.2 LED Indication................................................................................................21
3.3 Adjustment......................................................................................................22
4. PARTS LOCATION
4.1 Display Unit....................................................................................................24
4.2 Control Unit....................................................................................................26
4.3 Transceiver Unit..............................................................................................26
5. MAINTENANCE
5.1 Replacement of Grease Cotton .......................................................................32
5.2 Soundome (D) Replacement...........................................................................32
5.3 Transducer Replacement.................................................................................34
5.4 Tilt Gear Box Replacement.............................................................................35
5.5 Slip Ring Replacement....................................................................................36
5.6 Carbon Brush Replacement ............................................................................37
5.7 Tilt Code Disk Alignment...............................................................................38
6. TROUBLESHOOTING
6.1 Flow Chart ......................................................................................................40
Appendix A CH-250 vs CH-270..............................................................................46
Mechanical Parts List ................................................................................... 48
Exploded view .............................................................................................D-1
Schematic Diagram .......................................................................................S-1
1
SYSTEM CONFIGURATION
CH-270 (250 stroke)
HULL UNIT
SPEAKER
DATA/VIDEO OUT
MOTION SENSOR
12-32VDC
12/24 VDC
12-32 VDC
Speaker
Motion Sensor
External
Monitor
Control Unit
Display Unit
Navigator DISPLAY UNIT MU-100C
TRANSCEIVER UNIT
CH-273
INTERFACE UNIT
IF-8000
Remote
Controller
: Standard
: Option
: Local Supply
CONTROL BOX
CONTROL UNIT CH-252
SECTOR TRAIN RANGE TILT
MAIN
SUB FULL
HALF FAST
SCAN
BRILL
TARGET MENU
R/B EVENT
CUSTOM MODE
DISPLAY MODE
POWER
XDR
GAIN
HULL UNIT
CH-184
Note 1: The CH-270 is supplied
with or without a display
unit. For connection of
locally supplied monitor, an
interface unit is provided.
The drawing above shows
the system configuration
with the MU-100C.
Note 2: For use of a locally
supplied monitor, connect
it and control unit to the
interface unit.
2
CH-270 (350 stroke)
HULL UNIT
SPEAKER
DATA/VIDEO OUT
MOTION SENSOR
12-32VDC
12-32 VDC
Speaker
Mot on Sensor
External
Mon tor
Control Un t
D splay
Un t
Nav gator
CONTROL UNIT CH-252
DISPLAY UNIT MU-100C
TRANSCEIVER UNIT
CH-273
INTERFACE UNIT
IF-8000
Remote
Controller
HULL UNIT
CH-181
12/24 VDC
Note 1: The CH-270 s suppl ed
w th or w thout a d splay
un t. For connect on of
locally suppl ed mon tor, an
nterface un t s prov ded.
The draw ng above shows
the system conf gurat on
w th the MU-100C.
Note 2: For use of a locally
suppl ed mon tor, connect
t and control un t to the
nterface un t. : Standard
: Opt on
: Local Supply
GAIN SECTOR TRAIN RANGE TILT
MAIN
SUB FULL
HALF FAST
SCAN
BRILL
TARGET MENU
R/B EVENT
CUSTOM MODE
DISPLAY MODE
POWER
XDR
3
1. FUNCTION OF EACH UNIT
1.1 Display Unit (MU-100C)
The Display Unit (MU-100C) consists of DISP board (06P0238), LCD Inverter board, and LCD
unit. Figure 1.1 shows the block diagram of Display Unit.
LCD I/F
H-SYNC, V-SYNC, CLK
LCD Unit
5V
TP8
A/D CON.
U24 U9
TP9
AD5V
Sw tch ng Regulator
U20, Q3, Q4
FUSE
F1 3A
12VDC
10 to 16VDC
Inverter
R, G, B,
BRILL
R, G, B,
HSNC, VSNC, CLK
TP7
12V
5V LCD
TP1
TRXTD-A/B, CONTD-A/B, PWRSW-H/C
DISP Board
U6
U1,Q1,Q2
Figure 1.1 Block Diagram of Display Unit
The DISP board contains LCD interface circuit and a power switching regulator circuit. The
LCD interface circuit converts the analoge R, G, B signals from the transceiver unit into six bit
digital R, G, B signals with a A/D converter. H-SYNC, V-SYNC, and CLK (dot clock) signals
from the transceiver unit are also supplied to the LCD unit through the LCD Interface circuit.
The power switching regulator generates 5V for digital circuit, AD5V for the A/D converter, and
12V for the LCD inverter board.
The LCD unit consists of LCD module (10.4 inch's screen, TTF color LCD), LCD control board
and a fluorescent lamp for back-lighting.
The LCD inverter board generates high voltage for the fluorescent lamp, and it's pulse length is
controlled by the YC signal from the transceiver unit to adjust LCD brightness.
4
1.2 Control Unit (CH-252)
Figure 1.2 shows the block diagram of the Control Unit.
MU100C
Figure 1.2 Block Diagram of Control Unit
The control unit consists of the control panel and PNL board.
The CPU on PNL board reads the settings on the control panel and sends the data to the CPU in
transceiver unit through serial data communication bus.
The CPU on PNL board switches on and off LEDs and activates the buzzer.
5
1.3 Transceiver Unit (CH-273)
The Transceiver Unit consists of CPU board (06P0258), TRX board (06P0241), PWR board
(06P0242), and PRA board (06P0259).
Major function of CPU board is;
1) To control transmitting and receiving circuits.
2) To generate train/tilt control signal.
3) To generate transducer raising/lowering control signal.
4) To generate analog RGB, H-SYNC, Y-SYNC, and clock signals for the display unit.
5) To read settings on the control panel.
6) To receive and send I/O signals through NMEA port.
7) To receive data from the motion sensor.
8) To generate character data.
1.3.1 CPU Board (06P0258)
The heart of CPU board is a main CPU (U17) and a Gate Array (U30).
The gate array (U30) outputs KP signal, TX carrier signals (TX0 and TX1), RGB signal,
H/V-sync signal, AGC on/off signal (AGC), power reduction signal (TXL), TX frequency data
(F0 to F1), Direct Digital Synthesis (DDS, U19)-related signal, and volume control signal
(VOL0 to VOL7).
6
1.3.2 TRX Board (06P0241)
Figure 1.5 shows the block diagram of TRX board. The TRX board contains a transmission
circuit, a receiver circuit, and a audio amplifier circuit.
U2 TP3
Loudspeaker
TP5
TP8
TP6
TP10 VG
TP9
Figure 1.3 Block Diagram of TRX Board (06P0241)
Transmitter Circuit
Transmission carrier signal "TX0/TX1" from CPU board is amplified by Power MOS FET
amplifier circuit (Q4, Q6, Q7, Q9, Q10, Q12, Q13, and Q15). The output level of TRX board is
determined with +B voltage ("VTX" signal).
Receiver Circuit
The signal received by the transducer is sent to the wide band filter circuit through PRA board,
and then, mixed with a carrier signal "LCL" to convert it into IF signal (455 kHz). The CPU
board generates the carrier signal. The IF signal is amplified in accordance with GAIN/TVG
settings, and then rectified. The rectified signal is sent to CPU board and AGC control circuit.
Audio Amplifier Circuit
The 455kHZ IF signal is also sent to the audio amplifier circuit to drive the loudspeaker.
7
1.3.3 PWR Board (06P0242)
Figure 1.6 shows the block diagram of PWR board.
The power on/off switch in the control unit generates PSW-H and PSW-L signals to send them
to PWR board via the display unit. The PWR board generates 5V, -5V, 12V 12VD, and +B
voltage (VTX).
The 12VD voltage (12VA) is supplied to the display unit via CPU board. The VTX voltage is
determined with TXV voltage from CPU board.
VTX
Figure 1.4 Function diagram of the PWR Board (06P0242)
58
Figure 1.5 Shows power supply lines in the system.
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