Furuno 1832 Service Manual
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Furuno 1832 Service Manual

Furuno 1832 Service Manual

Marine radar/auto plotter
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  • Page 3: Table Of Contents

    Table of contents 1. GENERAL........................1-1 1.1 Outline ........................1-1 1.2 Boards & Major Components ................1-2 1.3 Specifications ......................1-3 2. BLOCK DESCRIPTION ....................2-1 2.1 Overview ........................ 2-1 2.2 Display Unit ......................2-2 Power Supply Circuit(PTU-9205)................2-2 Block Diagram of Processor PCB SPU-9211 ............2-4 Automatic Tuning ....................

  • Page 4: General

    1.1 Outline This manual provides the information necessary for the servicing and adjustment of the radars MODELs 1832, 1932 and 1942. The antenna unit uses a Log IF amplifier. The table below shows the major specifications of the each model. The same program is in- stalled on all models, but the menu setting through factory menu is different between the mod- els.

  • Page 5: Boards & Major Components

    1.2 Boards & Major Components – – – t a l *1: There are two types of the MD-9208 board; the old type for stepping motor RM-9361 and the new type for DC motor RM-9087A. The new board has fewer parts than the old one. No compatibility exists between the boards.

  • Page 6: Specifications

    1.3 Specifications SCANNER UNIT t a i t a i l a t ˚ ˚ ˚ c i t ˚ ˚ ˚ ± ˚ e t t i t a ± i s t ˚ i t a l a t i t a t a i t s i...
  • Page 7 DISPLAY UNIT ˚ ˚ ˚ i t a t t e ± ˚ t t e ˚ : ) t e l l : ) t • • ( l a t • • • $ B • • $ B •...
  • Page 8 ENVIRONMENTAL CONDITIONS C ˚ C ˚ C ˚ C ˚ ± ± i t a C ˚ C ˚ i t a POWER SUPPLY & POWER CONSUMPTION ø 1 i f i 1 – 5...

  • Page 9: Block Description

    Chapter 2. BLOCK DESCRIPTION 2.1 Overview The simpified block diagram of the system is illustrated below. Scanner Unit Antenna Display Unit Mag. HD,BP Mod. Processor Video Trigger RF Module Panel Power M1832-SME-8 Ship's mains Nav. Gyro Simplified block diagram of system The trigger pulse from the PROCESSOR Board is delivered to the MODULATOR Board, oscillates the magnetron, and then radar wave is emitted from the radiator.

  • Page 10: Display Unit

    2.2 Display Unit Refer to the block diagram on page 2-3. Power Supply Circuit (PTU-9205) The constant voltage generator Q1 is in operation even when power switch is off, if ship's mains is supplied. The power supply circuit is basically consists of a main inverter and a sub inverter. The main inverter derives the isolated line voltages +12 V/ANT+12 V and -12 V/ANT -12 V from the main input.
  • Page 11 2 – 3...

  • Page 12: Block Diagram Of Processor Pcb Spu-9211

    BLOCK DIAGRAM OF PROCESSOR PCB SPU-9211 2 – 4...

  • Page 13: Automatic Tuning

    4) When a range where pulselength is changed from short to middle and from middle to long is selected. Tracking: After short search, tracking takes place. Tracking voltage: 0 V to 13 V (MODEL 1832), 0 V to 32 V (MODEL 1932/1942) Tuning voltage (TUNE)

  • Page 14: Tuning Indicator

    MANUAL TUNING The manual tuning voltage changes from 1 to 12 V on M 1832, and 5 to 32 V on M 1932/1942 at the steps of about 0.1 V. Manual Tuning is carried out by using omnipad: pressing "Left" side decreases TUNING CONT voltage, pressing "Right"...

  • Page 15: Video Adjustment

    Video Adjustment The video adjustment is carried out through the Tune/video adjustment menu in the installation setup menu. The following describes the outline of the adjustment. q Main Bang suppression Level (MBS L) is set to 0. w EEPOT, U14 is set to minimum. (EEPOT initialization with "L" level of U14 #7) e EEPOT gets into step-up mode (U14 #2 is H.) to measure output video level at each step.

  • Page 16: Turning On/Off Antenna Rotation

    Turning on/off antenna rotation The SPU board controls antenna rotation. In normal operation, the antenna rotates during the TX condition. However, the antenna can be stopped during the TX condition thru the Installa- tion setup menu. PTU-9205 Board SPU Board INT9213 Board J201 J203...

  • Page 17: Block Diagram Of Arp Pcb

    Block Diagram of ARP PCB ARP Board (18P9007) CR1(Blinks 1sec) U13 V821(µPD70741GC-25) UART TARGET DATA (TTM:CURRENT LOOP) TX1H TRANSMIT TX1C UART NOT USED RX1H (Factory use) RECEIVER CPU CORE RX1C TP6(Factory use) CHANNEL TP1,9 TIMER (10ms) FLASH ROM PROGRAM/DATA 2M bit(U11) (256K bit x 2) 512K bit(U9,10) J107...

  • Page 18: Target Acquisition By Auto Plotter

    Target acquisition by Auto plotter Conditions for manual acquisition 1) Within 9 scans, the target must be detected near the cursor position. 2) Target echo must be smaller than land echo (800 m or less in the radial or circumferential direction) at the front end processor.

  • Page 19: Arp Self-Test

    ARP self-test [Self test] Key test: Press each key and check on-screen indication lights ARP-10 TEST 1859027101xx SPEED 0.0KT COURSE 287.6˚ TRIGGER VIDEO MIN-HIT 0003 SCAN-TIME 0250 MAN-ACQ AUTO-ACQ FE-DATA1 0217 FE-DATA2 0023 Program No : 0359139-1xx Hours in use 000026.6 H Tx houres 000012.7 H...

  • Page 20: Ttm Data Sentence Format (J1352)

    TTM data Sentence format (J1352) Hardware: Current loop Software: NMEA 0183 (Ver 2.0) TTM: Tracked target message $RATTM, xx, x. x, x. x, a, x. x, x. x, a, x. x, x. x, a, c--c, a, a, a <CR><LF> M1832-SME-09 1.

  • Page 21: Transceiver Unit

    To improve noise figure, amplifier and MBS circuit into the MIC, RU-9360. MIC w/RF amplifier • • • • • RU-8014 ( MODEL 1932/1942) MIC w/o RF amplifier • • • • RU-9360( MODEL 1832) DOUBLE- W.G. TO...
  • Page 22 2 – 14...
  • Page 23 2 – 15...

  • Page 24: Modulator

    Modulator PRINCIPLE OF FET SWITCHING MODULATOR High voltage is charged into C through R while the magnetron is inactive. When the trigger is applied to the power MOS-FET, the FET turns on and the high voltage appears at the primary winding of the pulse transformer.
  • Page 25 2 – 17...
  • Page 26 2 – 18...

  • Page 27: Different Points Of Similar Pcbs

    2.4 Different Points of Similar PCBs 1. How to set SPU (SPU-9211) Board This board is set at factory for use in the MODEL 1832. For use in the MODEL 1932 or 1942, change the factory menu as below. While pressing and holding down the GAIN (HM-OFF) control, press the [MENU] key five times to display the factory menu.

  • Page 28: Adjustment

    Chapter 3. ADJUSTMENT WARNING IMPORTANT! SAFETY INFORMATION Be sure to read all the safety information which follows before perfoming any adjustment. Hazardous Voltage This equipment uses high voltage electricity which can SHOCK, BURN or cause DEATH Always make sure the electrical power is turned off before attempting to change a component or inspecting the inside of the equipment.

  • Page 29: Adjustment Of Display Unit

    3.1 Adjustment of Display Unit Location of PCBs in Display Unit M1832-SME-27 Display Unit, Front Side of View POWER CONNECTOR OPTION DJ-1 CONNECTOR CONNECTOR HDG CONNECTOR NMEA2 CONNECTOR M1832-SME-28 NMEA1 CONNECTOR Display Unit, Rear Side of View 3– 2...
  • Page 30 18P9007 (Option) SPU-9211 SPU-9211 M1832-SME-28A M1832-SME-28B Inside of Display Unit, Right Side of View FIL-9206 PTU-9205 Board INT-9213 M1832-SME-29 M1832-SME-29A Inside of Display Unit, Rear Side of View Inside of Display Unit, Top Side of View 3 – 3...
  • Page 31 Line Voltage ) - ( ) - ( ) - ( ) - ( Output signals from DJ-1 connector ) - ( ) - ( ) - ( i t i µ ) - ( t i r i t i 3–...
  • Page 32 Location of parts on SPU-9211 J102 J107 J106 J109 J105 J104 J108 J101 J103 M1832-SME-30 SPU-9211 Board Test point on SPU-9211 t a t µ , s , y t i t i , y t 4 µ 0 2 µ 0 4 µ...
  • Page 33 Location of parts on 18P9007 (ARP) P107 M1832-SME-31 18P9007 Board Test point on 18P9007 (ARP) – i t i t i r i t i , y t 3– 6...
  • Page 34 Location of parts on PTU-9205 J1301 TP31 TP32 M1832-SME-32 PTU-9205 Board Test point on PTU-9205 – – ) – – – – – – – – – ) – – – – – 3 – 7...
  • Page 35 Location of parts on CRT Board M1832-SME-29B NOTE: The CRT is used with the rotation by 90 degrees. Therefore, the indications "V" and "H" correspond to horizontal and vertical, respectively. Adjustment of CRT FOCUS L2(WIDTH) VR4(FOCUS) CONTRAST VR1(CONT) FLYBACK TRANSFORMER FUSE BRIGHTNESS (1.6A)
  • Page 36 Synchro pulses and video signal 4.97 µS 4 V approx. Horizontal Synchro Pulse (15.77kHz) 63.4 µS 6.22 µS 2.49 µS 0.7 to 3.6 Vpp Video Signal 49.72 µS Timing Chart Between Horizontal Synchro pulses and video signal 0.63mS 4V approx. Vertical Synchro Pulse (60.09Hz)

  • Page 37: Adjustment Of Scanner Unit

    3.2 Adjustment of Scanner Unit Location of PCBs in Scanner Unit (MODEL 1832) Reed Switch S801 MODULATOR DC-DC CONV. (MD-9208) (MD-9335) Scanner Motor M1832-SME-34 B801(RM-9361) Inside of Scanner Unit (Bow side) IF AMP Board (IF-9214) Magnetron V801(E3571) (RU-9360) Circulator HY801(FCX73)
  • Page 38 Location of parts on MD-9208 VR802 TP803 (GND) TP802 M1832-SME-36 MD-9208 Board Test point on MD-9208 – – i t i – – – 3 – 11...
  • Page 39 Location of IF-9214 VC1 VC2 M1832-SME-37 IF-9214 Board Test point of IF-9214 – i t c – – – – – – – – – – ) – – 3– 12...
  • Page 40 Location of parts on PTU-9335 R106 For adjustment of magnetron heater voltage. See page 3-10. M1832-SME-38 PTU-9335 Board 3 – 13...
  • Page 41 Location of PCBs in Transceiver Module (MODEL 1932) IF AMP Board (IF-9099D) Magnetron U801 V801 M1832-SME-61 Transceiver Module BEARING SIG GEN Board (MP-8070) TP803 J701 MODULATOR Board (MD-7918A) J812 J811 M1832-SME-63 Transceiver Module, Cover removed 3– 14...
  • Page 42 Location of parts on MD-7918 A TP802 TP801 VR802 VR801 JP801 M821-SME-59 TP803 MD-7918A Board Test point on MD-7918 A – i t i – – – – – – – – – ) t r i t i – –...
  • Page 43 Location of parts on IF-9099 D TP602 TP603 TP605 JP604 JP605 TP607 VC601 TP601 TP606 TP604T M1832-SME-37A IF-9099 D Board Test point on IF-9099 D – i t c – – – – – – – – – ) - ( 3–...
  • Page 44 Location of PCBs in Transceiver Module (MODEL 1942) IF AMP Board (IF-9099D) Magnetron U801 V801 M1832-SME-64 Transceiver Module BEARING SIG GEN Board (MP-8070) TP803 J701 MODULATOR Board (MD-7918E) J812 J811 M1832-SME-65 Transceiver Module 3 – 17...
  • Page 45 Location of parts on MD-7918 E VR801 TP802 TP801 VR802 M1832-SME-66 JP801 TP803 MD-7918 E Board Test point on MD-7918 E – i t i – – – – – – – – – ) t r i t i –...
  • Page 46 Location of parts on IF-9099 D TP602 TP603 TP605 JP604 JP605 TP607 VC601 TP601 TP606 TP604T M1832-SME-37A IF-9099 D Board Test point of IF-9099 D – i t c – – – – – – – – – ) - ( 3 –...

  • Page 47: Maintenance

    CHAPTER 4. MAINTENANCE 4.1 Remarks on Replacement of Major Parts Turn off the power before replacing any parts Do not touch the magnetron while the radar is transmitting. Sufficient high voltage exists at the magnetron to cause death. MAGNETRON The magnetron emits a strong magnetic field. For this reason, remove wrist watch before per- forming the replacement and use a non-magnetic screwdriver to dismount the magnetron.

  • Page 48: Life Expectancy Of Expendable Parts

    The SPU board uses Flush ROM (U36) to store a system program. The program version num- ber can be checked at "23. Self Check" on the MAIN menu. [Self test] Key test: Press each key and check on-screen indication lights ARP-10 TEST 1859027101xx...

  • Page 49: Menu List

    Own Position (L/L, TD) Cursor Posi (B/R, L/L) Alm Sense LV (Low, Mid, High) Dead Sector (Off, On) 36) :1832 36, 48) :1932 Range 36, 48, 64) :1942 (1/8, 1/4, 1/2, 3/4, 1, 1.5, 2, 3, 4, 6, 8, 12, 16, 24,...

  • Page 50: Troubleshooting

    CHAPTER 5. TROUBLESHOOTING 5.1 Outline This chapter provides troubleshooting flow charts and describes error messages. Error messages When there is no bearing pulse signal the display unit shows BP-SIG-MISS and when there is no heading signal, HD-SIG-MISS. Check the antenna cable when those indications appear. Troubleshooting flow charts The troubleshooting flow charts help the service technician to diagnose problems.

  • Page 51: Troubleshooting Flow Charts

    5.2 Troubleshooting Flow Charts Start Press Turn power on. Nothing appears Flow chart 1 on display. No echoes nor Flow chart 7 white noise. Abnormal display. Flow chart 2 Poor sensitivity. Flow chart 8 Flow chart 3 No heading data. No GAIN, STC, Flow chart 9 FTC effect.
  • Page 52 Symptom: Nothing appears on the display. Flow chart 1 No ( No power) Keys beep when Check in-line fuse . pressed. Yes ( Equipment is powered) Faulty CRT assy. OK ? CRT heater lights? (Type: QB1069) Replace fuse, turn on power. Check horizontal, vertical * See page 2-4 for synch signal and video...
  • Page 53 Syptom: Abnormal display. Flow chart 2 Check horizontal, vertical * See page 2-4 for synch signal and video waveforms. output at J102 #2, #4, #5 on pcb SPU-9211. Faulty pcb SPU-9211 OK ? Check if CRT brilliance is not set to minimum with BRILL control.
  • Page 54 Symptom: No heading data. Flow chart 3 AD format Heading data format. NMEA 0183's HDT, HDM, HDG Blank Heading data indication. * * *. * Heading data Blank indication. Check CLK data at HDG connector #3, #4 on displau unit. * * *.
  • Page 55 Symptom: No nav data. Flow chart 4 All data shown by asterisks or blank. Nav data indication. Some data shown by Check RD NMEA1/2 asterisks or blank. connector #3,#4 on display unit with oscilloscope. Check nav equipment's output sentences. Wrong data sentence format Select sentences to be output.
  • Page 56 Symptom: Key(s) inoperative. Flow chart 5 Warm up countdown. Faulty pcb SPU-9211. Faulty VR1 or VR2 on pcb PNL-9212, S1 to S12 on pcb Only one key is faulty. PNL-9212 Faulty lines #10 and #11 (KEY 2) of W301 on PNL-9212. Single vertical row only.
  • Page 57 Symptom: Antenna dose not rotate. Flow chart 6 Antenna dose not rotate. Stop Menu setting ? Change "Scan stop" setting to "Rotate". (Installation menu) Rotate 0 V (DJ-1 #1) when TX key is pressed. MOTOR(+) on DJ-1 connector. +12 V (DJ-1 #1) several seconds after TX key is pressed .
  • Page 58 Faulty pcb SPU-9211. and display unit. Disconnected or Faulty cable on video line. shorted. ±12 V line on Faulty cable on ±12 V line. antenna unit. Faulty pcb IF AMP. M 1832: IF-9214 M 1932/1942: IF-9099D M1832-SME-45 5 – 9...
  • Page 59 Check level at DJ-1 M1832-SME-46 Faulty pcb SPU-9211 #2 on display unit. Check if TUNE voltage is MODEL 1832: 0 V to 12V output from display unit. MODEL 1932/1942: 5V to 28 V (Switch from ST-BY to Check that DJ-1 #6 on Faulty pcb SPU-9211.
  • Page 60 MODEL 1832: Faulty pcb MD-9208 MODEL 1932: Faulty pcb MD-7918A Within rating ? MODEL 1942: Faulty pcb MD-7918E MODEL 1832: 7.4 V to 7.6 Vdc MODEL 1932: 7.4 V to 7.6 Vdc Check magnetron heater MODEL 1942: 7.5 V to 7.7 Vdc voltage at ST-BY.
  • Page 61 Magnetron usage time Replace magnetron. within in 2000 hrs. Check if AUTOMATIC MODEL 1832: 0 V to 12 V TUNE voltage is output from MODEL 1932/1942: 5 V to 28 V display unit. (Switch from ST-BY to TX) Check level at DJ-1 #6 Faulty pcb SPU-9211.
  • Page 62 Symptom: No GAIN, STC, FTC effect. Flow Chart 9 Check voltage at GAIN can be adjusted. Faulty VR1 on PNL-9212 board. J101 #15 on SPU board. MIN : approx. - 9 V MAX : 0 V Faulty pcb SPU-9211. A/C SEA can be Check voltage at Faulty VR2 on PNL-9212 board.
  • Page 63 Symptom: Target cannot be acquired. Flow chart 10 AD format HD data * Heading data in NMEA 0183 cannot be used for ARP. supplied? 200msec Transfer rate. Change the rate to 25msec. 25msec NG (Indication of ARP-10 When LED(CR1)on ARP board is off: 18P9007 is faulty. is not connected) ARP data display? When LED(CR1)on ARP board is blinking: 18P9007 or SPU-9211 is faulty.

  • Page 64: Message Indication

    5.3 Message Indications The following messages appear to call the operator's attention to missing heading, bearing or gyro pulses. . y l e t t i t a . l a i t c 5 – 15...

  • Page 79: Schematic Diagrams

    SCHEMATIC DIAGRAM – – – – S – 1...

This manual is also suitable for:

19321942

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