Furuno FE-700 User manual

ECHO SOUNDER
MODEL FE-700

C
9-52, Ashihara-cho,
Nishinomiya, Japan
Telephone: [phone]
Telefax: 0798-65-4200
Your Local Agent/Dealer
All rights reserved.
PUB. No. SME-23660-A
FE-700
(MAYA)
FIRST EDITION : APR 2000
Printed in Japan

A1-1
Addenda No.1 to FE-700 service manual, Pub. No. SME-23660
How to upgrade software
Necessary tools:
1) A DOS/V compatible PC (NEC PC98 cannot be used.)
2) OS: MS-DOS/Windows 95/98
3) Interconnection cables: 80-0654 and SAP-161-101
4) New Software
Fabricate the interconnection cable between the monitor unit and the PC as below.
FE-700 PC
DATA Port MJ6P (D-SUB,9pins)
4 >- - - - - - - - - ->1>- - - - - - - - - <2
5 >- - - - - - - - - ->2> <1
6 >- - - - - - - - - ->3>- - - - - - - - - <3
7 >- - - - - - - - - ->4>- - - - - - <4
>5> <6
10 >- - - - - - - - - - >6>- - - - - - - - - <5
----<7
----<8
<9
Cable: SAP-161-101 Cable: 80-0654
1. New software supplied is a self-extracting file. Make a new file on the PC, copy a
file supplied, fe700vx.exe to the new file, then, double-click the fe700vx.exe icon.
Nine files are extracted.
Up700.bat, load600.b, load600.b96, uppg.exe, dummy.b, boot600.bin,
upboot60.bat, fe700t1.bin, update.txt
2. Copy these files to a floppy disk to execute the program from the floppy disk.
3. Connect the DATA port on the FE-700 display unit to the serial I/O port of the
PC.
4. Turn on the PC. Do not as yet turn on the FE-700.
5. Select MS-DOS prompt in the program file to run MS-DOS program.
C:¥windows> appears.
6. Insert the program disk and type A:, followed by Enter key.
A:¥> is on the screen.
7. Type up700 and press Enter key.

A1-2
8. Select baud rate “2:19200.”
“TARGET power on” comes on the PC screen.
9. Turn on the FE-700.
10. Wait for about 6 minutes.
The PC screen shows the progresses of updating. When loading of new
software is completed, “Finish version up.ted” appears on the PC screen while
the FE-700 shows normal picture.
11. Turn off the FE-700 and the PC to disconnect the cable.

2/2
C4
C29
Figure 1 C29 on MAIN board (02P6280(A) with wrong polarity
Figure 2 C4 on CONE board (02P6283) with wrong polarity

CONTENTS
General
SYSTEM CONFIGURATION...............................................1
Chapter 1. Circuit Description
1.1 GENERAL BLOCK DIAGRAM ..................................2
1.2 FUNCTION OF EACH UNIT.......................................3
1.3 POWER SUPPLY..........................................................4
1.4 TRANSMISSION CIRCUIT.........................................7
1.5 RECEIVING CIRCUIT.................................................8
1.6 DISPLAY.......................................................................9
Chapter 2. Maintenance
2.1 ADJUSTMENT.............................................................12
2.2 REPLACEMENT OF LITHIUM BATTERY................12
Chapter 3. Troubleshooting
3.1 DIAGNOSTIC TEST ....................................................13
3.2 CLEARING THE MEMORY........................................15
3.3 ALARM AND ERROR MESSAGE.............................15
3.4 INSPECTION OF EACH BOARD...............................16
Chapter 4. Parts Location
4.1 DISPLAY UNIT ............................................................18
4.2 DISTRIBUTION BOX..................................................23
4.3 MATCHING BOX.........................................................24
4.4 SWITCH BOX...............................................................25
Chapter 5. Digital interface (IEC 61162-1)
5.1 I/O SENTENCES..........................................................26
5.2 SENTENCE DESCRIPTION........................................26
PARTS LIST........................................................................30
Exploded View..................................................................D-1
Electrical Parts List.......................................................E-1
Schematic Diagram.......................................................S-1

1
SYSTEM CONFIGURATION
The FE-700 consists of Display Unit ( FE701 ) , Distribution Box ( FE702 ), Transducer
Switching Box ( EX-8 ) and Matching Box ( MB-502/MB-504 ). The Switching Box and
Matching Box connected to switching box are supplied optionally.
TRANSDUCER
DISTRIBUTION
BOX
FE-702
DISPLAY UNIT
FE-701
JUNCTION BOX
JIS F8821-1
MATCHING BOX MB-502 (f r 50B-6B)
MB-504 (f r 200B-8B)
JB JB
IEC 61162-1
EIA-232C
IEC 61162-1 Navigation Device
Navigation Device
Personal Computer
IEC 61162-1
JB
T ANSDUCE SWITCH BOX
EX-8
DIGITAL DEPTH INDICATO
FE-720
CONTACT CLOSU E BUZZE
: Standard Supply
Ship’s mains
100-115 VAC/200-230 VAC
or
24 VDC
: Optional Supply
General

2
1.1 GENERAL BLOCK DIAGRAM
Figure 1.1 General Block Diagram
Chapter 1. Circuit Description
Filter Switching Power Supply
+100 V
Transmitter
Receiver
Receiver
J1
J3
Selector
TX0-M/TX1-N
ASIG
G IN
OPC
+12 V
+9 V
15 V
+5 V
GND
FREQ
D/ Converter
200 KHz
50 kHz
CPU
Gate rray
LCD I/F
Inverter
+9 V
DR M
Flash ROM
RTC
SR M
Flash ROM
RS232C
LCD Unit EDTCA14QCF
Photo Cupler
Panel Boar PNL( 02P6250 )
MEM ( 02P6282 )
CONTRUST
M IN Board ( 02P6280 )
NLG Board ( 02P6281 )
DISTRIBUTION BOX FE-702
J3
J4
DISPL Y UNIT FE701
1 2 3 1
3 5
1 2 3
TB2
4
5
1
2
3
TB4
CONE Boar ( 02P6283 )
1 3
1 2
1 3
Fuse Fuse
Fuse
1 3
TB6
TB5 J2
J3
S1
RS422
J1
J1
J2
21 21
25 25
22 22
27 27 29 30
29 30
11
12
13
14
15 34 5
Ship’s Main 100/115/200/230 V C
Ship’s Main 24 VDC
M TCHING BOX
Transducer
Filter

3
1.2 FUNCTION OF EACH UNIT
Display Unit (FE-701 )
Board/Unit Functions
MAIN Board
(02P6280) 1) Processes depth signal by the CPU and the gate array, and converts them
into the video signal.
2) Receives panel signal.
3) Detects the depth.
4) Generates the "SHALLOW DEPTH ALARM".
5) Includes a LCD I/F and an inverter for LCD backlighting.
6) Communicates with external equipment in IEC61162-1 and RS232C data
format.
ANLG Board
(02P6281) Consists of a power circuit, a depth sounder circuit and an interface circuit.
PNL Board
(02P6250) Consists of keys, rotary switches, VRs, LEDs for panel illumination and a
buzzer.
MEM Board
(02P6282) 1) Memorizes the depth and time for 24 hours. 2) Contains a backup battery and a clock circuit.
Color Display
(EDTCA14QCF) Consists of an LCD and a cold cathode tube for LCD backlighting.
Distribution Box (FE-702 )
Board/Unit Functions
CONE Board 1) Interfaces the I/O signal between the Display Unit and External Unit.
2) Converts 100/115/200/230 VAC to 24 VDC for the Display Unit.
Matching Box (MB-502/MB-504 )
Matches impedance between transmitter/receiver and transducer.
Transducer Switching Box ( EX-8 )
Selects the transducer to be used.
1.2 FUNCTION OF EACH UNIT

4
1.3 POWER SUPPLY
Either 24 VDC or 100-115/200-230 VAC ship's mains is connected to the Distribution Box.
The connection on TB7 must be changed depending on ship's mains, as follows.
1) When ship's main is 100 to 115 VAC;
2) When ship's main is 200 to 230 VAC;
The AC supply voltage is converted to 24 VDC on the CONE board in the Distribution Box and
supplied to the Display Unit and the Digital Depth Indicator.
The DP-ON signal (+5V) from the ANLG board activates the relay K2 on the CONE board in
the Distribution Box, and then the 24 VDC is supplied to the Digital Depth Indicator through
relay K2. See Figure 1.3.
Fig. 1.3 Power circuit on the CONE board
1
2
3
TB7 Black
Orange
White
1
2
3
Orange
Black
White
TB7
Figure 1.2 Connections on TB7
1.3 POWER SUPPLY

5
Switching Regulator Circuit
The switching regulator on the ANLG board generates 100 V for TX amplifier, 9 V for LCD
inverter and 15/12/5 V for other circuits.
R49 (+5V Adj. )
R50 (Freq, Adj. )
BC
D
A
E
Figure 1.4 Switching regulator circuit on the ANLG board
100V
12V
9V
5V
15V
Power ON/OFF
Note: Waveforms at A/B/C/D/E in above circuit diagram are found in figure 1.5.
1.3 POWER SUPPLY

6
Figure 1.5 Waveforms at A/B/C/D/E on the switching regulator circuit.
A
B
C
D
E
1.3 POWER SUPPLY

7
1.4 TRANSMISSION CIRCUIT
The transmission amplifier circuit is commonly used for both frequencies, 50/200 kHz.
The transmission frequency is set on the System Menu 3. Transmission carrier signal
"TX0/TX1" are generated by Gate Array U10 on the MAIN board 02P6280 and supplied to the
TX driver circuit. Figure 1.6 shows the transmission amplifier circuit.
Figure 1.6 Transmission Circuit on the ANLG Board
1.4 TRANSMISSION CIRCUIT

8
1.5 RECEIVING CIRCUIT
The received signal is amplified by the Log Amplifier Circuit. Both 200 and 50 kHz RX circuits
are located on the ANLG board and the one of RX circuits is selected by U9 in accordance with
the System Menu 3 setting.
Figure 1.7 shows the receiving amplifier circuit.
Gain Control Circuit
Figure 1.8 shows the gain control circuit. The gain VR setting is detected by the CPU as binary
code data "000 to 255" which is converted to DC gain control voltage by the A/D converter U5.
The gain control voltage ( 1.9 to 3.8V ) controls the amplitude of Q16/Q21 in the receiving
circuit.
Figure 1.8 Gain control circuit
Figure 1.7 Receiving amplifier circuit on the ANLG board
1.9V to 3.8V
1.5 RECEIVING CIRCUIT

9
1.6 DISPLAY
The TFT LCD module is employed for the presentations. The control circuit and fluorescent
lamp for backlighting are molded in the LCD unit "EDTCA14QCF". The life of the fluorescent
lamp is approx. 20,000 hours if it is used with max. brightness.
High voltage for LCD backlighting is generated on the MAIN board and is outputed from J4-#1
and #2 to the LCD unit. Figure 1.9 shows the LCD inverter circuit. The output level between J4-
#1 and #2 is approx. 1.6 to 2.0kVpp when LCD unit is connected.
WaveformbetweenJ4-#1andJ4-#2
Figure 1.9 LCD inverter circuit on the MAIN board
1.6 DISPLAY

10
I/O Signals of LCD Module
Pin Signal Specification/Function
1 STH1 Source Driver Start Pulse 1 ( When RL is High )
2 OEH Pulse for switching the output current of the Source Driver
3 Q2H Control signal for switching the Video Data for the Source Driver
4 CPH1 Source Driver Sampling Pulse 1
5 CPH2 Source Driver Sampling Pulse 2
6 CPH3 Source Driver sampling Pulse 3
7GND0V
8 BLUE Video Signal (Blue)
9 GREEN Video Signal (Green)
10 RED Video Signal (Red)
11 VB Controls buffer current of Source Driver Output
12 RL +3V ( change left/right shift direction )
13 STH2 Source Driver Start Pulse 2
14 VEE Positive source voltage (+5V) for the Source Driver
15 Vcom Applied voltage for facing electrode(amplitude changes with brightness
control)
16 VGH +12V for the Gate Driver
17 VDD +3V for the Source Driver and Gate Driver
18 STV2 Gate Driver Start pulse 2
19 OEV Selects the output of the Gate Driver ( H: VGL output )
20 CPV Clocked pulse for the Gate Driver
21 UD -15V ( change upper/lower shift direction )
22 STV1 Not Used
23 VSS Negative source voltage( -15V ) for Gate Driver
24 Vgoff Gate Off voltage ( The level is changed by Brightness Adjuster )
I/O Signals of LCD Module

11
Figure 1.10 Output Waveforms from LCD
interface circuit
I/O Signals of LCD Module

12
2.1 ADJUSTMENT
ANLG board
Measuring Point Ratings Adjuster
Vcc (+5V) J5, #3 and GND ( TP1 ) +5±0.02 V R49, ANLG Board
Switching frequency U3,#9 and U3, #7 ( GND ) 83.4~83.8 kHz R50, ANLG Board
Figure 2.1 Adjuster on the ANLG board
2.2 REPLACEMENT OF LITHIUM BATTERY
The battery on the MEM board must be replaced when the low battery alarm appears on the
display.
Note: Before removing the battery, disconnect JP1.
TypeofBattery Code No.
CR2450-F2ST2 000-133-495
Figure 2.2 Memory Backup Circuit on the MEM board
R50
TP1
R47
J1
J4
J3 J2
U3
U2
VBAT1 2
1 2 JP1
BT1
Cha
p
ter 2. Maintenance
R49
WARNING!
Take care to avoid external
short-circuiting of the battery.
A sustained high-rate of
discharge could create a burn
or fire hazard!

13
3.1 DIAGNOSTIC TEST
Function Test
Function test is performed by the following key operation.
1. Press the POWER key while pressing any key.
2. Release the key when the optional mode selection display appears.
3. Press the [ - ] key to select the TEST.
The following display appears.
Figure3.1 TestScreen
ROM, DRAM, SRAM and Battery check
The ROM, DRAM, SRAM and internal battery are checked and the results are displayed
as OK or NG. If NG appears, following devices are suspected to be defective.
ROM NG : U14 of the MAIN board
DRAM NG : U16 of the MAIN board
SRAM NG : U7/U8 of the MEM board
Battery NG : Battery (BT 1) of the MEM board
Key status
Press and release each key (except the POWER switch) one by one. If the key is normal,
its on-screen location lights in black while the key is pressed.
If some abnormal condition obtained, the PANEL and MAIN board are suspected to be
defective.
Key status
Position of Range knob
Gain knob setting
Position of Mode knob
Color bar
( 16 colors )
Program number
Battery check
ROM, DRAM and SRAM
check
Chapter 3. Troubleshooting