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  5. Maintenance Manual

Japan Radio Co. JRV-500B Maintenance Manual

Summary of JRV-500B

  • Page 1

    Maintenance manual for jrv-500b vhf transceiver j approved checked designed drawing no. Dc15-jrv-500b.

  • Page 2

    Iiii precautions to be taken in operation 1. Do not proceed to the operation of equipment before thoroughly reading the operation manual. 2. This equipment requires the licenses to operate a radio station and to be engaged in radio operations. You need obtain both radio station and radio operator li...

  • Page 3

    Iiiiiiii contents page 1. Outline ········································································· 1 – 1 2. Components ································································· 2 – 1 2.1 standard components····················································· 2 – 1 2.2 optional comp...

  • Page 4

    Iiiiiiiiiiii 6 remote control ·······································································6 – 1 6.1 outline of remote control·························································6 – 1 6.2 serial control method ······························································6 – 1 6.2.1 t...

  • Page 5

    Iiiiv v v v jrv-500bps vhf transceiver ·········································· 10 – 16 jrv-500bpmf vhf transceiver ·········································· 10 – 17 jrv-500bpms vhf transceiver ·········································· 10 – 18 jrv-500bpmsf vhf transceiver ·······················...

  • Page 6

    1 - 1 1. Outline the jrv-500b vhf transceiver (after called jrv-500b) is shore basis communication equipment for maritime communication system in 150mhz rr band, is designed to satisfy the itu radio regulation (rr). It attends the simplex and duplex communications under operating conditions with 24h...

  • Page 7

    1 - 2 designation of model the model is designated as follows: example: jrv-500bpmsf-1 type of power supply (refer to note.) -1 : 12vdc -2 : 24vdc -4 : 48vdc blank : 85 - 132v ac/170 - 264v ac built-in filter f : with built-in filter blank : without built-in filter duplex type / simplex type s : sim...

  • Page 8

    2 - 1 2. Components 2.1 standard components the standard components are as follows: no. Components model q'ty remarks 1. Vhf transceiver jrv-500b 1 2. Accessories jrv-500-acc1 1 fuse, hand microphone and connecters are included 3. Instruction manual operation manual maintenance manual 1 1 in english...

  • Page 9

    2 - 2 no. Components model remarks 9. Coaxial cable wf-h50-7 wf-h50-4 20d-2e 10. Spare parts jrv-500b-sp spare parts for maintenance 11. Spare pc module -1 control -2 operation panel -3 rx circuit -4 tx circuit -5 power amplifier cde-885 cmd-745 cma-705 cmb-257 cah-559 12. Measurement equipment and ...

  • Page 10

    3 - 1 3. Specifications 3.1 general 1) frequency range transmission : 156.025-156.875mhz(simplex) 160.625-162.025mhz (duplex) reception : 156.025-157.425mhz 2) memory channels : up to 8 channels (memory - channel mode) 3) communication system : simplex press-to-talk duplex press-to-talk 4) class of ...

  • Page 11

    3 - 2 10) power supply : 85-132v ac/170-264v ac, 50/60hz or 13.6v dc ±10% the 100v or 200v ac power supply can be selected with a change over switch. 24v dc ± 20% or 48v dc ± 20% can be selected. In this case, however, only dc power supply can be used. 11) power consumption : less than 180w 12) dime...

  • Page 12

    3 - 3 3.3 receiver section 1) method of reception : double super heterodyne 2) oscillation : pll frequency synthesizer 3) sensitivity : -3dbu e.M.F. Or less under the 12db eia sinad method (refer to note 2.) 0dbu or less under the 20db noise quieting method (refer to note 2.) 4) squelch sensitivity ...

  • Page 13

    4 - 1 4. Installation 4.1 installation location when determining a location for the unit, please take the following criteria into consideration: ・ avoid a place that is exposed to direct sunlight or susceptible to overheating. ・ avoid humid or dusty place. ・ do not place containers holding water or ...

  • Page 14

    4 - 2 4.3 cable connection some connectors to connect external are available to the unit in the next table. Select the connectors by a presence of the external devices. Item connector no. Part name pin no. I/o remarks 1 i minus input dc power j101 hs21r-2 2 i plus input 1 i ac power input or plus in...

  • Page 15

    4 - 3 item connector no. Part name pin no. I/o remarks 1 o rx antenna select 1 2 o rx antenna select 2 3 o rx antenna select 3 4 o rx antenna select 4 5 o rx antenna select 5 6 o rx antenna select 6 7 o rx antenna select 7 8 o rx antenna select 8 9 - ground 10 o +13.6v rx ant filter select j104 sc-1...

  • Page 16

    4 - 4 item connector no. Part name pin no. I/o remarks 13 o memory ch3 response 14 o memory ch4 response 15 o memory ch5 response 16 o memory ch6 response 17 o memory ch7 response 18 o memory ch8 response 19 - ground 20 - no connection 21 o local response 22 o receive response 23 o ptt response 24 o...

  • Page 17

    4 - 5 item connector no. Part name pin no. I/o remarks 47 48 o af output 49 - ground 50 - no connection 51 52 i line input 200bps:voice & cont 1200bps:control 53 54 o line output 200bps:voice & cont 1200bps:control 55 56 i ext input 200bps:n.C. 1200bps:voice 57 58 o ext output 200bps:n.C. 1200bps:vo...

  • Page 18

    4 - 6 4.4 applicable connector connectors that show in following table match to jrv-500 ,and are recommended. Connector no. Connector name applicable connector applicable cable remarks j101 hs21r-2 hs21p-2 vctf2x 50/0.18 dc power j102 hs16r-3 hs16p-3 vctf2x 50/0.18 ac power j103 fm214-8s fm-14-8p fo...

  • Page 19

    4 - 7 connector no. Connector name applicable connector applicable cable remarks p-1660ba, p-1660a -ca (20) j106 s-1660a -sta pw-1660ba, p-1660a -ca (20) swvp-0.5 -60c remote control j108 p-2240-p pj-2240-p hc2l1 or hc2l2 record out j109 lgr4517 pj-055b mvvs-20/ 0.18-6.5p- (8) phones n-p-5 5d-2v or ...

  • Page 20

    4 - 8 4.5 installation antenna system the following diagrams show general arrangement for installation of antenna system. 4.5.1 installation of jrv-500 with 1 antenna. W f -h 4d-nj w f -h 50-4 w f -h 4d-nj n -p -8 n -j n-j r x a n t r x a n t d u p le x e r t x a n t t x a n t a n t a w -158y b d u ...

  • Page 21

    4 - 9 4.5.2 installation of jrv-500 with 2 antennas. When installing the antennas, it is ideal to arrange the two elements of antenna on the same perpendicular line with a spacing of at least 5 meters provided between them (fig.2). If it becomes unavoidable to install the two antenna elements at the...

  • Page 22

    4 - 10 bad good h d(m) 7 6 5 4 3 2 0 1 2 3 4 5 6 7 8 9 h(m) d ant no.1 ant no.2 good fig.4 limits if h and d which allow transmitter unit to exert no interference to receiver unit. Example: both the transmitter and receiver units are operable when h and d expressed by mark o in the graph are 9 and 3...

  • Page 23

    5 - 1 5. Initial settings 5.1. Switching and setting power supply voltage the unit operates on dc or ac power, or on a combination of both. To operate the unit on dc power only, connect the dc power supply to the dc in (j101) jack on the rear of the unit. Be careful because only negative grounding i...

  • Page 24

    5 - 2 5.2.2. Page 1 for internal data the following data settings are in this page 1. A) setting for memory channel data in memory channel mode. B) setting for the configuration data. C) setting for memory channel mode or direct channel mode. D) setting for private channel data. E) setting for rx an...

  • Page 25

    5 - 3 5.2.4. Procedure for setting initial data on page1 5.2.4.1. Setting for memory channel data in memory channel mode in this section, the method for setting the memory channel data is described bellow, when the jrv-500b is set in memory channel mode. After operating in paragraph 5.2.1. As page 1...

  • Page 26

    5 - 4 5.2.4.2. Setting for the configuration data in this section, the internal configurationdata is set as same as actual configuration of the radio. After operating in paragraph 5.2.1. As page 1, operate as follows: operation display remarks 88 1 tr, t or tr entering the setting for the configurat...

  • Page 27

    5 - 5 5.2.4.3. Setting for memory channel mode or direct channel mode in this section, the memory channel mode or direct channel mode is selected after operating in paragraph 5.2.1. As page 1, operate as follows: operation display remarks 88 2 0 or 1 present data is displayed on the led. Select the ...

  • Page 28

    5 - 6 5.2.4.4. Setting the private channel data in this section, the private channel data is able to set. After operating in paragraph 5.2.1. As page 1, operate as follows: operation display remarks 88 3 _ _ entering the setting for memory channel number data 3 3 (ch30 is set as private channel numb...

  • Page 29

    5 - 7 0 00 # _ _ separator for receiving frequency data to next data 1 or 2 d or s select the duplex or simplex operation 0: duplex operation 1: simplex operation # 89 save and exit this setting (for saving data to eeprom) or ＊ 88 exit this setting (for not saving data to eeprom) turn off the s2(dip...

  • Page 30

    5 - 8 5.2.4.5. Setting for rx antenna filter control data in this section, establishing a connection between international vhf channel number and rx antenna filter line number after operating in paragraph 5.2.1. As page 1, operate as follows: operation display remarks 88 4 _ _ entering the setting f...

  • Page 31

    5 - 9 5.2.4.6. Setting for remote or local mode as default data even when the power is turned off, memory remembers mode in which the unit has been operating. When power is turned on next time, the unit is started up in local or remote mode according to the contents of memory. However, if power is l...

  • Page 32

    5 - 10 5.2.4.7. Setting for full-duplex or semi-duplex in duplex channel selecting the duplex operating mode or semi-duplex operating mode. After operating in paragraph 5.2.1. As page 1, operate as follows: operation display remarks 88 6 d or s entering the setting for duplex operating mode or semi-...

  • Page 33

    5 - 11 5.2.4.8. Setting for full-remote or semi remote in remote mode selecting the full-remote or semi remote in remote mode. In the semi-remote, the channel selection and power reduce selection operation can be done from operation panel of jrv-500b. After operating in paragraph 5.2.1. As page 1, o...

  • Page 34

    5 - 12 5.2.4.9. Testing the serial control line outputting the data ‘h’,’l’ or signal which duty cycle is 50 % with no modem operation. Outputting the data ‘3320hz’ as h data,’3150hz’ as ‘l’ data, signal which duty cycle is 50 % or no control data with modem operation. After operating in paragraph 5...

  • Page 35

    5 - 13 5.2.4.10. Restoring the each data to default restoring the each data to default. After operating in paragraph 5.2.1. As page 1, operate as follows: operation display remarks 88 9 cl restoring the each data to default # 89 restoring default data and exit this setting (for restoring default dat...

  • Page 36

    5 - 14 5.2.6 other functions off on s2-1 shot scan (3 second each) long scan (10 second each) s2-2 disable local test mode enable local test mode s2-5 no wait (power on) 10 second wait (power on) s2-6 un repetitive reverse transmit collating check repetitive reverse transmit collating check s2-7 not...

  • Page 37

    6 - 1 6. Remote control 6.1 outline of remote control the vhf controller can operate a vhf transceiver (or transmitter/receiver) installed at a distant place by remote control via a cable under the 3.4 khz width voice specification and a multiplex radio link. Control signals are outputted to the con...

  • Page 38

    6 - 2 6.2.1 transmission specification the transmission specification of the serial control method is as follows: - transmission line specification : eia rs-422 (when a transducer is used rs-232c is also available.) - transmission rate : 1200 baud (no voice signals are superimposed.) 200 baud (voice...

  • Page 39

    6 - 3 2) second byte table 6-3 second byte higher bits lower bits bit 7 bit 6 bit 5 bit 4 bit 3 bit 2 bit 1 bit 0 0 1 * err tx unlk rx unlk over heat low power the bits have the following meanings. Bit 7 : 0: this bit indicates the second byte. Bit 6 : 1: this bit indicates the second byte. Bit 5 : ...

  • Page 40

    6 - 4 4) fourth byte (itu and private channel) table 6-6 fourth byte higher bits lower bits bit 7 bit 6 bit 5 bit 4 bit 3 bit 2 bit 1 bit 0 1 1 2 1 8 4 2 1 the bits have the following meanings. Bit 7 : 1: this bit indicates the fourth byte. Bit 6 : 1: this bit indicates the fourth byte bit 5 : chann...

  • Page 41

    6 - 5 6.2.3 transmission format (direct channel mode) details of a 4-byte control or a 4-byte monitor item are as follows: 1) first byte table 6-8 first byte higher bits lower bits bit 7 bit 6 bit 5 bit 4 bit 3 bit 2 bit 1 bit 0 0 0 * rec rmt 4 2 1 the bits have the following meanings. Bit 7 : 0: th...

  • Page 42

    6 - 6 2) second byte table 6-10 second byte higher bits lower bits bit 7 bit 6 bit 5 bit 4 bit 3 bit 2 bit 1 bit 0 0 1 power rdc rec rmt ptt sq power the bits have the following meanings. Bit 7 : 0: this bit indicates the second byte. Bit 6 : 1: this bit indicates the second byte. Bit 5 : transmitte...

  • Page 43

    6 - 7 4) fourth byte (itu and private channel) table 6-12 fourth byte higher bits lower bits bit 7 bit 6 bit 5 bit 4 bit 3 bit 2 bit 1 bit 0 1 1 2 1 8 4 2 1 the bits have the following meanings. Bit 7 : 1: this bit indicates the fourth byte. Bit 6 : 1: this bit indicates the fourth byte bit 5 : chan...

  • Page 44

    7 - 1 7. Maintenance & trouble shooting 7.1 standard voltage standard voltages of the each pc board are in following table. A) control (cde-885) terminal standard voltage [v] remarks ic42-16 8±0.5 power supply for analog circuit tp3 4±0.4 reference for analog circuit tp1 13.5±2 (transmitting) power ...

  • Page 45

    7 - 2 7.2 standard signal level and adjustment a) control (cde-885) item turning control check terminal value measurement equipment remarks mic gain rv5 ic41 1pin 0.7vp-p oscilloscope with 1khz 3mvp-p signal at mic terminal remote audio signal input level rv3 ic41 1pin 0.7vp-p oscilloscope with 1khz...

  • Page 46

    7 - 3 tx circuit (cmb-257) item tuning control check terminal value measurement equipment remarks transmitting level vr4 j602 26dbm power meter transmit d) power amplifier (cah-559) item tuning control check terminal value measurement equipment remarks alarm level rv3 tx ant 25w dummy load tune the ...

  • Page 47

    8 - 4 7.3 trouble shooting make the next flow chart a hint because of a solution of a problem. 7 no no yes yes yes no no no yes yes yes ok ng ng ok no ng ng no are there any alarm indication on the operation panel? Is this 'rul' alarm? Indication abnormal is the pilot lamp turned on? Replace cma-705...

  • Page 48

    8 - 5 no yes yes no no yes no yes cannot receive are the control functions (channel indication & changing the channe) well? Replace cde-885 control pc board replace cma-705 rx pc board is the receive lamp turned on? Replace cde-885 control pc board is there demodulated signal at ic5-7 of cma-705 set...

  • Page 49

    8 - 6 yes yes no no yes no yes no no no yes yes cannot transmite is the 'transmit' lamp turned on? Is transmitting power normal? Are the control functions(channel indication & changing the channe) well? Replace cde-885 control pc board is transmitting power normal? Replace cmb-257 tx pc board end is...

  • Page 50

    8 - 1 8. Circuit description 8.1 transmitter section 8.1.1 pll circuit (cmb-257) the unit obtains the required frequency using the pll type frequency synthesizer. In short, the self-excited oscillator using l and c is controlled using a stable crystal oscillator frequency to generate an equivalent s...

  • Page 51

    8 - 2 8.1.4 output control circuit (cah-559) the unit employs a circuit that controls fluctuations of power to keep the transmitting output constant. It also has the function to prevent the transmitting output from exceeding the ratings. For this purpose, a positive voltage detected by cd3 is divide...

  • Page 52

    8 - 3 8.2 receiver section 8.2.1 pll circuit (cma-705) the pll circuit for reception has the same construction as that for transmission. The low-pass filter consisting of cr suppresses relatively high undesirable noise components of the dc control voltage for frequency control, which is supplied by ...

  • Page 53

    8 - 4 8.3 operation panel (cmd-745) cd1 through cd3 are 7 segment type led indicators. The control signals from the cpu are held in ic5 to ic8, and ic1 to ic4 drive the led's. Cd8 and cd5 are send/receive indicators. Sw1 through sw12 are numeric switches. S13 switch is used for switching between rem...

  • Page 54

    8 - 5 program written to rom (ic11). The microprocessor (ic1) outputs chip select data using the address bus. Ic2, ic6, ic7 or ic8 designates memory ic and ports for the chip select data. The designated ic supplies data to the microprocessor or any external device according to the request made by th...

  • Page 55

    8 - 6 8.5 modem (cnm-162ba) the modem is used to transmit or receive control or monitor signals of the vhf transceiver to or from vhf controller at a distant place. For the modem, a transmission rate of 200 or 1200 baud can be selected. When 200 baud is selected, voice signals can be superimposed. W...

  • Page 56

    9 - 1 9. Mechanical drawing jrv-500bp vhf transceiver ··········································· 9 – 2 jrv-500bd vhf transceiver ··········································· 9 – 5.

  • Page 57

    10 - 1 10. Electrical drawing jrv-500bp vhf transceiver block diagram··························· 10 – 2 jrv-500bpm vhf transceiver block diagram··························· 10 – 3 jrv-500bpf vhf transceiver block diagram··························· 10 – 4 jrv-500bps vhf transceiver block diagram······...

  • Page 58

    11 - 1 11. Parts list jrv-500b vhf transceiver ·········································· 11 – 2 cde-885 control ······················································· 11 – 4 cma-705 rx circuit ··················································· 11 – 15 cmb-257 tx circuit···························...