Furuno GP-90 Service Manual
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Furuno GP-90 Service Manual

Furuno GP-90 Service Manual

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GPS NAVIGATOR
GP-90/90-DUAL

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Summary of Contents for Furuno GP-90

  • Page 1 Back GPS NAVIGATOR GP-90/90-DUAL...
  • Page 2 *00014894400* *00014894400* *00014894400* *00014894400* ( ( KAOK KAOK ) ) GP-90 GP-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*...

  • Page 3: Table Of Contents

    Contents Circuit Description Antenna Unit................1 Display Unit................1 LCD Driver Signal..............4 GP-90 - DUAL ................4 Location of Parts ............. Maintenance Adjustment................6 Jumper Setting .................7 Battery Replacement..............8 Troubleshooting Error Messages ..............10 LED Status................10 Selftest ...................10 Troubleshooting Flow Chart..........13 Communication with PC Connection................19 Setting..................19...

  • Page 4: Circuit Description

    Key Data PREAMP PNL Board NP Board (20P8148) (20P8188) LED Brill, Keyboard Beacon Antenna Display Data +5V,+12V Power supply +24 V, AC210 V RTCM SC-104 +5 V BEACON Receiver (GR-7000A) 10.2 - 31.2 V Fig. 1 Block diagram of GP-90...
  • Page 5 1. Circuit Description 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.
  • Page 6 1. Circuit Description...

  • Page 7: Lcd Driver Signal

    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. GP-90 - DUAL...

  • Page 8: Location Of Parts

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

  • Page 9: Maintenance

    3. Maintenance 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) 82.3 to 84.3 KHz J2#3(+) and J2#5(-) 5.07 V to 5.17 V See Fig.3.3 for...

  • Page 10: Jumper Setting

    3. Maintenance 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.

  • Page 11: Battery Replacement

    3. Maintenance Output of log pulse signal MNEA0183 signal is output from DATA 3 port with factory - default setting. Put short jumpers on JP5 instead of JP4 to output log pulse from DATA 3 post. Table 3.3 Setting of JP4 and JP5 Jumper NMEA0183 Log pulse...
  • Page 12 3. Maintenance Lithium Battery Type : CR2450-F2ST2L Code : 000-144-941 Fig.3.5 NP Board (20P8188), Soldering side...

  • Page 13: Troubleshooting

    4. Troubleshooting 4.1 Error Messages Table 4.1 lists error codes . Table 4.1 Error messages Error message Possible cause Action 1) Check antenna connections. When GPS signal is suddenly GPS No fix 2) Replace GN-8091 board. lost. DGPS beacon station is 1) Check DGPS coverage.
  • Page 14 4. Troubleshooting 2. Press [1]. MEMORY, I/O PORT TEST PROGRAM MEMORY OK SRAM NG appears if the test Internal Battery connectors are not connected DATA 1 PORT to DATA ports DATA 2 PORT DATA 4 PORT Blank if BEACON board is BEACON not installed.
  • Page 15 4. Troubleshooting If GPS selftest detects an error, it is indicated by an error code listed in table 4.4. Table 4.4 GPS selftest error codes Error Error Errors Errors codes codes ROM Error RAM Error and RTC Error RAM Error BACK UP MEMORY Error and RTC Error ROM Error, RAM Error and BACK UP BACK UP MEMORY Error...

  • Page 16: Troubleshooting Flow Chart

    4. Troubleshooting 4.4 Troubleshooting Flow Chart Start Press Power Switch. Power? Flow chart 1 Flow chart 2 Position fix? DGPS 2D/3D Flow chart 3 mode? Normal display? Flow chart 4 Key operation? Flow chart 5...
  • Page 17 4. Troubleshooting Symptom: Fails to power Flow 1 <10.2 V Supply voltage? Defective power supply 10.2 to 31.2 V Wrong polarity Blown fuse? Short - circuit between #19 and #20 of J9 Power switch is Defective power switch normal? Open - circuit between #19 and #20 of J9 +5 V and +12 V is normal on J2...
  • Page 18 4. Troubleshooting Symptom: No fix Flow 2 Enter correct Position fix L/L data and time L/L thru initial Wrong initialization set - up menu. are normal? (Defective keep-alive battery) No position fix Carry out GPS Defective GN-8091 selftest Measure +5 V at ANT connector.
  • Page 19 4. Troubleshooting Symptom: No DGPS 2D/3D mode Flow 3 “BEACON RCVR INSTALLED” appears Defective U16 at power - up display (Beacon receiver is detected automatically) Beacon NG Selftest is OK? Defective cable between beacon receiver and (Menu, 8,1) NP Board, or defective NP Board Beacon OK Station selection and Select an adequate station and initialize...
  • Page 20 4. Troubleshooting Symptom: Abnormal display Flow 4 Dark about 200 VAC Brilliance? Output from J4 on Defective LCD unit (Bril setting: 4) NP Board? Light 0 VAC Defective NP Board No Key beep Key beep? See Flow 5. (No picture) Key beep Abnormal Output from J10...
  • Page 21 4. Troubleshooting Symptom: No key response Flow 5 Power-up Self test? Defective NP Board Single key is Defective key switch on PNL Board defective? Check keys for row and column wirings, All Keys? using the key matrix below, U20 on NP Board is defective, if wiring is okay.

  • Page 22: Communication With Pc

    5. Communication with PC Waypoint and route data can be transferred from GP-90 to PC, and vice versa. 5.1 Connection Connect DATA 4 port on GP - 90 to COM port on the PC. RS-232C; TD: #5/#6, RD: #3/#4 RS-422; TD: #1/#2, RD: #3/#4 5.2 Setting...

  • Page 23: Data Format

    5. Communication with PC 5.4 Data Format (1) Waypoint data $ PFEC,GPwpl,llll.ll,a,yyyyy.yy,a,c,--c,c, (1)(2) (3) (4) (5) (6) c--c,a,hhmmss,xx,xx,xxxx<CR> <LF> (7) (8) (9) (10)(11)(12) (1) Latitude (2) N/S (3) Longitude (4) E/W (5) Waypoint number (1 to 1131) (6) Waypoint color (1: red, 2: green, 4: cyan, 5: purple, 6: blue, 7: white) (7) Comment (2 bites for mark shape , 12 bites for comment) (8) Waypoint graph on/off (9) Time (6 digits)
  • Page 24 5. Communication with PC Waypoint numbers, 0000 to 1131, are classified into 7 groups. Table 5.1 waypoint numbers Waypoint No. Memory Group Item Mark (output) size Original point 0000 1 point Waypoint 01 to 200 0001 to 0200 200 points Not output 1 point When WPs entered by using cursor...
  • Page 25 5. Communication with PC Example of Waypoint Data • Data and time: March, 10 1997, 12:30:15 • Position: 34° 45.000N, 135° 21.000E • Waypoint: No. 007 • Mark shape : • Comment: 100 boxes $PFEC,GPwpl,3445.0000,N,13521.0000,E,0007,Y,@2100 boxes,A,123015,10,03,2003,<CR> <LF> (2) Route data RTE,x,x,x.,x,a,cccc,cccc, ·...

  • Page 26: Program Upgradation

    6. When loading is complete, “ Finish Version Up Continue loading? <(Y/N) ” appears on the PC screen. 7. Select “ N ” to quit loading. If you have another GP-90 to be updated, select “ Y ”, Change GP-90 and then turn it on.

  • Page 27: Using Mt-08

    6. Program Upgradation 6.2 Using MT-08 DATA 4 port on GP-90 is connected to MT-08 as below. GP-90 MT-08 DATA4 D-SUB RS-232CTxD RS-232CRxD 6.3 DIP Switch Setting DIP switches in MT-08 are set as below. Setting...

  • Page 28: Procedure

    Data transfer completed sec (If failed, red lighting.) Turn off MT-08 and remove program card Step 2. To transfer the data from MT-08 to GP-90, follow steps below. Necessary time: about 20 minutes LED status Steps Connect MT-08 to GP-90.
  • Page 29 S - 1...
  • Page 30 S - 2 空中線部 空中線部 ANTENNA UNIT ANTENNA UNIT GPA‑017S GPA‑017S GPA‑018S GPA‑018S GPA‑019S GPA‑019S TNC‑J‑3 *2 TNC‑J‑3 *2 TNC‑P‑3 *2 TNC‑PS‑3D‑002 *2 TNC‑P‑3 *2 TNC‑PS‑3D‑002 *2 NJ‑TP‑3DXV‑1, NJ‑TP‑3DXV‑1, 1m,φ5.3 1m,φ5.3 N‑J‑3 *2 N‑J‑3 *2 GPS 航法装置 GPS 航法装置 GPS NAVIGATOR GPS NAVIGATOR GP‑90‑DUAL GP‑90‑DUAL...

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Gp-90-dual

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