Furuno GP-90 User manual

GPS NAVIGATOR
GP-90/90-DUAL
Back

Your Local Agent/DealerYour Local Agent/Dealer
9-52 Ashihara-cho,9-52 Ashihara-cho,
Nishinomi
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a, Ja
p
anNishinomi
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a, Ja
p
an
Tele
p
hone :Tele
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hone : 0798-65-21110798-65-2111
faxfax 0798-65-42000798-65-4200
::
F
IRST EDITION :
F
IRST EDITION : NOV.NOV. 20032003
Printed in JapanPrinted in Japan
A
ll ri
g
hts reserved.
A
ll ri
g
hts reserved.
PUB.No.PUB.No. SME-44270-ASME-44270-A
*00014894400**00014894400*
*00014894400**00014894400*
(( KAOKKAOK )) GP-90GP-90 * 0 0 0 1 4 8 9 4 4 0 0 ** 0 0 0 1 4 8 9 4 4 0 0 *
*SME44270A00**SME44270A00*
*SME44270A00**SME44270A00*
* S M E 4 4 2 7 0 A 0 0 ** S M E 4 4 2 7 0 A 0 0 *

Contents
1. Circuit Description
1.1 Antenna Unit............................................................................1
1.2 Display Unit.............................................................................1
1.3 LCD Driver Signal...................................................................4
1.4 GP-90 - DUAL ........................................................................4
2. Location of Parts .............................................................5
3. Maintenance
3.1 Adjustment...............................................................................6
3.2 Jumper Setting.........................................................................7
3.3 Battery Replacement................................................................8
4. Troubleshooting
4.1 Error Messages......................................................................10
4.2 LED Status.............................................................................10
4.3 Selftest...................................................................................10
4.4 Troubleshooting Flow Chart..................................................13
5. Communication with PC
5.1 Connection.............................................................................19
5.2 Setting....................................................................................19
5.3 DATA Transfer ......................................................................19
5.4 Data Format...........................................................................20
6. Program Upgradation
6.1 Using PC................................................................................23
6.2 Using MT-08 .........................................................................24
6.3 DIP Switch Setting ................................................................24
6.4 Procedure...............................................................................25
Schematic Diagrams ...............................................................S-1

1. Circuit Description
1
GP-90 features;
1) WAAS-capability (From the production in December 2003)
2) Compliance of IEC61108-1 ed.2
3) Calculation of set and drift based on NMEA ground speed and heading data (From the
production in December 2003)
4) Entering waypoint in range and bearing data (From the production in December 2003)
1.1 Antenna Unit
The antenna unit includes a preamplifier. The antenna cable carries +5 V to power the preamplifier.
The GPS signal received by the antenna is delivered to the GPS board, GN-8091. The GPS board
selftest cannot detect the short circuit on the antenna cable.
1.2 Display Unit
Figure 1 shows the block diagram of the display unit.
PREAMP
Beacon Antenna
ANTENNA UNIT DISPLAY UNIT
Lat/Long, SPD/CRS
GPS initial data
LCD
Key Data
LED Brill,
Display Data
+24 V,
AC210 V
GN-8091 Board
GPS
Power supply
PNL Board
(20P8148)
Keyboard
BEACON
Receiver
(
GR-7000A
)
+5V,+12V
NP Board
(20P8188)
RTCM SC-104
10.2 - 31.2 V
+5 V
Fig. 1 Block diagram of GP-90
RX SIG
5 V

1. Circuit Description
2
GPS Board, GN-8091
The board is 12 discrete channel, all - in - view, L1 GPS receiver which processes GPS signal for
position fixing and for calculating speed and course of the ship.
NP board, 20P8188
The board mainly consists of a CPU, Flash ROM stored system program, Video RAM, Backup battery,
and power supply circuit. Major function of the board is;
1) Control of entire system
2) Reading key data
3) Control of input and output data
4) Storage of GPS data, waypoints and mark data
5) Graphic data processing
6) Output of display data to LCD
7) Output of log pulse (contact closure signal), if selected
8) Producing following voltages
+5 V: for digital circuit and internal beacon receiver
+12 V: for flash memory and analog circuit
–20.5 V: LCD drive voltage
210 Vac: for LCD backlight
PNL Board, 20P8148
The board consists of 18 switches, 10 LEDs used to adjust brilliance, a buzzer, and a temperature
coefficient resistor (R1). The contrast of LCD is kept constant by R1.
LCD, EW50136FDW
The LCD contrast is stabilized by temperature compensation. Decreasing temperature, for instance,
causes an increase in R1’s resistance and a consequent increase in the LCD bias voltage. The NP board,
20P8188 outputs the bias voltage from pin 2 of J10. The bias is approximately –17.9 V at 25 °C in
automatic bias mode. The bias changes from –20 V to –16 V at 25 °C in manual bias mode.

1. Circuit Description
3
To LCD Unit
To LCD Unit
To PNL Unit
From Personal Computer, Beaco
n
Receiver
From Built-in Beacon Receiver Program
ROM
(Flash ROM)
8 Mbit
U16
CR7
#26
#30,#41
#27
#31
MPU
TMP68301
#43
#50-52
DATA 1 DATA 3
#40 #41 #44
RS-232C (5 V),
RS-422 (0 V)
DATA 2
J3 MOB IN
RXD
TXD
U29 #18,U30 #4
#14 #11
CH A CH B
SIO
RS-232C(U29)
RS-422(U30)
Selector
U29,U30 U23
+12 V +5 V -20.5 V
DATA 4
POWER
Address G/A
ACRTC Controller, LCD I/F, KEY I/F
16 MHz
8 MHz
U15
RAM
2 Mbit
CG
ROM
4 Mbit
VIDEO
RAM
3 Mbit
6.2 MHz
Address Data ACRTC
U5
Key Data Picture Data
←Lat/Long,SPD/CRS,Time Date,etc
+5 V
GPS INITIAL SETTING→
U12, U13 U21, U27 U14 U24 U25
U26
CFL Regulator
Contrast Adjuster. #6
JP1
BT1 #3
BAT VOLT
Detector
U22
#2 VBAK
(
+3V
)
Tout1
Connected to temperature sensing resister(2.7 V at about 20°C)
Vo (-16 V to –20 V)
J4
J10
14
J9 J11
To GPS RECEIVER
2
1, 4
5
3, 4
1, 2 1, 2
3, 4
1 3 2 3 3 1
1, 2
Brilliance and Contrast Adjuster. (D/A CONV.)
U2
TXD
RXD
11-14
1-10
U3
Q6,Q7,T1,U1
J2
ON/OFF
Switching
Regulator
Controller
Switching
Regulator
Q16
U8
U38
TXD RXD
RXD
TXD
JP4, JP5
CONTACT
SIG. GEN
Fig.1.2 Block diagram of NP board

1. Circuit Description
4
1.3 LCD Driver Signal
The table below illustrates the pin assignments of J10, LCD connector on NP board.
J10 Signal Remarks J10 Signal Remarks
#1 F.G Frame Ground #8 M AC signal for LCD driving
#2 Vo Power supply voltage for
contrast adjustment #9 FRM Frame start signal (Data
signal of the shift register of
the common driver)
#3 VEE LCD driver supply voltage
(-20.5 V) #10 DISP OFF Display off signal, Active low
#4 Vss GND #11 D3 Display data
#5 VDD +5 V #12 D2 Display data
#6 CP Clock pulse for segment shift
register (Data shift pulse) #13 D1 Display data
#7 LOAD Common driver data shift
signal: also latches the data of
the line immediately above.
#14 D0 Display data
1.4 GP-90-DUAL
GP-90 - DUAL consists of two GPS receivers and an interface unit, IF-2500.
The GPS receiver for dual configuration differs from one for single configuration only in software.
Antenna Unit
12 - 24 VDC
GPA - 017S (GPS)
GPA - 018S (DGPS, Whip)
GPA - 019S (DGPS)
ANT
MJ - A6SPF0012 - 100
(Comes with IF - 2500 )
DATA 1
DATA 3
DATA 4
DATA 2
MJ - A6SPF003 - 050
MJ - A2SPF014 - 03 Display Unit
ANT
DATA 1
DATA 3
DATA 4
DATA 2
MJ - A2SPF014 - 03
12 - 24 VDC
GPA - 017S (GPS)
GPA - 018S (DGPS, Whip)
GPA - 019S (DGPS)
GP-90 - DUAL
GP-90 - DUAL
IF - 2500
E/S, Radar & Autopilot Alarm system
VCTF1.25X2C
12 - 24 VDC
VH2P - 002
XH4P - 002 XH5P-002 XH3P - 002
Contact - closure signal
INPUT INPUT
Antenna Unit
J2 (XH6P) J3 (XH6P)
J1(VH2P)
(XH3P)
J10 (XH3P) J11 (XH3P) J12
(XH4P)
J4 (XH4P) J5 (XH4P)
J6 (XH4P) J7 (XH5P) J8
Display Unit
Fig.1.3

2. Location of Parts
5
Fig.2.3 Front panel without LCD
PNL Board
(20P8148)
Fig.2.2 Front panel, rear view
LCD
EW50136DW
Fig.2.1 GP-90 Display unit
Beacon receiver
GR-7000A
(Optional)
Power supply circuit
4A Fuse
NP Board
(20P8188)
GPS receiver
GN-8091

3. Maintenance
6
See Fig.3.3 for
enlarged view.
Fig.3.1 NP Board (20P8188)
See Fig.3.2 for
enlarged view.
3.1 Adjustment
Switching regulator frequency and +5 V are adjusted by R34 and R84 respectively as shown in Table
3.1.
Table 3.1 Adjusters on NP board
Test points Adjuster Rating
Gate of Q16 and GND(R80) R34 82.3 to 84.3 KHz
J2#3(+) and J2#5(-) R84 5.07 V to 5.17 V
Fig.3.2 Power supply circuit, enlarged view (NP Board)
Regulator, U8
Type : PQ09RA1
Code : 000-131-421
Q16 gate
4A Fuse
R34 (F - ADJ)
R84 (V - ADJ)
J2

3. Maintenance
7
3.2 Jumper Setting
Table 3.2 lists the function of jumpers.
Table 3.2 Jumpers on NP board
Jumper Connected Removed
JP1 (BAT) Normal operation* Battery replacement
JP2 (EMU) Not used Not used*
JP3 (BEACON) Not used* Not used
JP4 (NMEA) Not used* When JP5 is connected.
JP5 (LOG) Log pulse from DATA 3 When JP4 is connected.
*Factory - default
JP2
JP1
JP5 JP3 JP4
Fig.3.3 Jumpers on NP Board, enlarged view