Vertex Standard VX-2500V manual

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Table of contents for the manual

  • Page 1

    1 VHF FM Transceiver VX-2500V Service Manual Introduction This manual provides technical information necessary for servicing the VX-2500V Transceiver. Servicing this equipment requires expertise in handling surface-mount chip components. Attempts by non-qualified persons to service this equipment may result in permanent damage not covered by the wa[...]

  • Page 2

    2 General Frequency range : 134-160 MHz (Type A) 148-174 MHz (Type C) Number of Systems : 32 Number of Groups : 250 Number of Channels : 250 channels (Conventional) 640 channels (Trunking) PLL Steps : 5.0 kHz/6.25kHz Power Supply Voltage : 13.8V DC ±15 % Channel Spacing : 12.5 / 25.0 kHz Current Consumption (Approx.): TX: 6 A RX: 700 mA STBY: 250 [...]

  • Page 3

    3 DSUB 9-pin Accessory Connector Pin 1 : Output Logic squelch High: Radio receiving the signal with the correct CTCSS, DCS, or LTR ID. Low: Radio not receiving the signal with the correct CTCSS, DCS, or LTR ID. Pin 2 : Output Rx discriminator JP3 (JP1503) - Flat: 10 Hz to 3.0 kHz (140 m V rms / STD deviation with 600 ohm termination) or JP4 (JP1504[...]

  • Page 4

    4 Exploded View & Miscellaneous Parts • ‚ ƒ † † † † † † † ƒ … „ „ „ „ ‚ CASE RA0060100 SHIELD GASKET S5000238 SPONGE RUBBER (SHIELD) RA0365500 BLIND SEET (70 x 10) RA0365500 BLIND SEET (4 x 3) RA0405200 SP HOLDER RA0378300 SPONGE RUBBER RA0383600 PANEL ASSY RA0376000 VOL KNOB RA0377000 TUBE RA0392000 CHASSIS RA00[...]

  • Page 5

    5 Block Diagram (1)[...]

  • Page 6

    6 Block Diagram (2)[...]

  • Page 7

    7 Interconnection Diagram[...]

  • Page 8

    8 Note[...]

  • Page 9

    9 Circuit Description 1. Overview The VX-2500V is a VHF FM mobile transceiver designed to operate in the frequency range of 134 to 174MHz. 2. Circuit Configuration by Frequency The receiver is a double-conversion superheterodyne with a first intermediate frequency (IF) of 44.25MHz and a sec- ond IF of 450kHz. Incoming signals from the antenna are m[...]

  • Page 10

    10 The output of the VCO is amplified by the Q1020 and rout- ed to the pin 5 of the PLL IC. Also the output of the VCO is amplified by the Q1021 and routed first local/Power Module according to D1022 . The PLL IC consists of a prescaler, fractional divider, ref- erence divider and phase comparator and charge pump. This PLL IC is fractional-N type s[...]

  • Page 11

    11 Alignment Introduction The VX-2500V is carefully aligned at the factory for the specified performance across the frequency range speci- fied for each version. Realignment should therefore not be necessary except in the event of a component failure, or altering version type. All component replacement and service should be performed only by an aut[...]

  • Page 12

    12 Setup the test equipment as shown below, apply 13.8V DC power to the transceiver. The transceiver must be programmed for use in the in- tended system before alignment is attempted. The RF pa- rameters are loaded from the file during the alignment process. PLL VCV ¦ Connect the positive lead of the DC voltmeter to the test point TP1007 (VCV) on [...]

  • Page 13

    13 The alignment tool outline Installation the tool This alignment tool consists, MS-DOS based, only one ex- ecute file “svc47.exe.“ You make a directly as you think fit, and copy this file. That is all of the installation pro- cess. Boot the tool Change directly and input in command line, “svc47 [en- ter],“ and boot the alignment tool. Pre[...]

  • Page 14

    14 - [3] REF Deviation This parameter is used to align the REF Deviation. ¦ Press [ Enter ] on “[3] REF Deviation” to align REF Deviation. ¦ Select the Channel “1“ in alignment range. ¦ Adjust the AF generator output level to 776m V rms(0dBm) at 300Hz to the pin 3 of the J1502. ¦ Press the [ Space ] key on the keyboard to acti- vate the[...]

  • Page 15

    15 Alignment [1] Common RX - [0] Tight NSQL This parameter is used to align the noise level in squelch Tight. It adjusts this alignment RX Tuning after ending. ¦ Select the MID frequency channel in alignment range. ¦ Set the SG output level to 0dB m EM F , and obey the message. - [1] Threshold NSQL This parameter is used to align the noise level [...]

  • Page 16

    16 RF Unit Jumper Information JP1501 (JP1) : Determine the output supply voltage at pin 8 of DSUB 9-pin Accessory Connecto r. Close: +5.0 V (Maximum 100 mA) Open: No Action JP1502 (JP2) : Determine the output supply voltage at pin 8 of DSUB 9-pin Accessory Connecto r. Close: +13.8 V (Maximum 100 mA) Open: No Action JP1503 (JP3) : Determine the Rx d[...]

  • Page 17

    RF Unit 17 Circuit Diagram (1) RX: 0 V TX: 5.5 V HIGH POWER: 3.3 V LOW POWER: 2.5 V HIGH POWER: 2.6 V LOW POWER: 1.0 V RX: 0 V TX: 1.6 V 9.0 V 3.8 V 3.8 V 3.8 V 3.8 V 3.8 V 0.7 V RX: 8.9 V TX: 8.2 V RX: 0 V TX: 8.9 V RX: 8.8 V TX: 0 V RX: 0 V TX: 8.9 V RX: 0 V TX: 5.0 V RX: 5.0 V TX: 0 V 2.0 ~ 7.0 V RX: 0 V TX: 0.4 V RX: 0 V TX: 1.7 V RX: 0 V TX: 1[...]

  • Page 18

    RF Unit 18 Circuit Diagram (2) 4.8 V 2.2 V 0.7 V 1.3 V 1.2 V 5.3 V 5.8 V 3.7 V 3.7 V HORN OFF: 0 V HORN ACTIVE: 8.9 V HORN OFF: 0 V HORN ACTIVE: 0.6 V HORN OFF: 0 V HORN ACTIVE: 4.2 V HORN OFF: 10.0 V HORN ACTIVE: 0 V HORN OFF: 8.9 V HORN ACTIVE: 0 V HORN OFF: 8.9 V HORN ACTIVE: 8.3 V HORN OFF: 0 V HORN ACTIVE: 5.0 V BUSY: 4.2 V MUTE: 0 V BUSY: 5.0[...]

  • Page 19

    RF Unit 19 Parts Layout (Side A) 1 3 4 2 A C B E D G F H 2SA1602A (MF) (Q1505) 2SB1301 (ZQ) (Q15 11) 2SD1368CB (CB) (Q1504) 2SK508 (K52) (Q1013) 3SK228 (XR) (Q1026) IMH6A (H6) (Q1017) M5223 (Q1019) NJM2902V (Q1003, 1503) RT1N241M (N2) (Q1002, 1006, 1016, 1032, 1033, 1034, 1035, 1502, 1506, 1507, 1512, 1518) SA7025DK (Q1023) TDA2003H (Q1509) 2SC4154[...]

  • Page 20

    RF Unit 20 Parts Layout (Side B) a c b e d g f h 1 3 4 2 RA30H1317M (Q1014) TA31136FN (Q1028) 2SA1602A (MF) (Q1031) 2SB 1132 (BA) (Q1009) 2SB1201S (Q1005) 2SC4 116 (LG) (Q1001) 2SC4154 (LE) (Q1007, 1519) 2SC4215Y (QY) (Q1029) 2SC5107 (MFO) (Q1020, 1021, 1025) 2SC5415E (EA) (Q1022) 2SJ125D (JD) (Q1515) DTB123EK (F12) (Q1008) IMH6A (H6) (Q1010) MM121[...]

  • Page 21

    21 RF Unit Parts List REF DESCRIPTION VALUE V/W TOL. MFR'S DESIG VXSTD P/N VERS. LOT SIDE LAY ADR PCB with Component CB1724001 Printed Circuit Board AC031N000 FR0075900 1- C 1001 CHIP CAP. 470pF 50V CH GRM39CH471J50PT K22174249 1- A G3 C 1002 CHIP CAP. 0.001uF 630V R GHM1030R102K630PT K22281801 1- A G1 C 1003 CHIP CAP. 220pF 50V CH GRM39CH221J[...]

  • Page 22

    22 REF DESCRIPTION VALUE V/W TOL. MFR'S DESIG VXSTD P/N VERS. LOT SIDE LAY ADR RF Unit Parts List C 1081 CHIP CAP. 470pF 50V CH GRM39CH471J50PT K22174249 1- B g3 C 1082 CHIP CAP. 220pF 50V CH GRM39CH221J50PT K22174243 1- A D3 C 1083 CHIP CAP. 470pF 50V CH GRM39CH471J50PT K22174249 1- B g2 C 1084 CHIP CAP. 0.1uF 16V B GRM39B104K16PT K22124805 1[...]

  • Page 23

    23 RF Unit Parts List REF DESCRIPTION VALUE V/W TOL. MFR'S DESIG VXSTD P/N VERS. LOT SIDE LAY ADR C 1168 CHIP CAP. 470pF 50V CH GRM39CH471J50PT K22174249 1- A G3 C 1169 CHIP CAP. 0.01uF 50V B GRM39B103M50PT K22174823 1- A C1 C 1170 CHIP CAP. 22pF 50V CH GRM39CH220J50PT K22174219 1- B f3 C 1171 CHIP CAP. 10pF 50V CH GRM39CH100D50PT K22174211 1-[...]

  • Page 24

    24 REF DESCRIPTION VALUE V/W TOL. MFR'S DESIG VXSTD P/N VERS. LOT SIDE LAY ADR RF Unit Parts List C 1246 CHIP CAP. 0.01uF 50V B GRM39B103M50PT K22174823 1- B f1 C 1247 CHIP CAP. 0.001uF 50V B GRM39B102K50PT K22174821 1- A E1 C 1248 CHIP CAP. 0.1uF 16V B GRM39B104K16PT K22124805 1- A F4 C 1249 CHIP CAP. 12pF 50V CH GRM39CH120J50PT K22174213 1- [...]

  • Page 25

    25 RF Unit Parts List REF DESCRIPTION VALUE V/W TOL. MFR'S DESIG VXSTD P/N VERS. LOT SIDE LAY ADR C 1541 CHIP CAP. 0.1uF 16V B GRM39B104K16PT K22124805 1- B f2 C 1543 CHIP CAP. 0.1uF 16V B GRM39B104K16PT K22124805 1- B f1 C 1544 CHIP CAP. 0.1uF 16V B GRM39B104K16PT K22124805 1- A A2 C 1545 CHIP CAP. 0.1uF 16V B GRM39B104K16PT K22124805 1- A B1[...]

  • Page 26

    26 REF DESCRIPTION VALUE V/W TOL. MFR'S DESIG VXSTD P/N VERS. LOT SIDE LAY ADR RF Unit Parts List L 1032 M.RFC 0.082uH HK1608 82NJ-T L1690527 1- B b3 L 1033 M.RFC 0.22uH HK1608 R22J-T L1690940 1- B c3 L 1034 M.RFC 0.082uH HK1608 82NJ-T L1690527 1- B d2 L 1035 M.RFC 0.22uH HK1608 R22J-T L1690940 1- A G3 L 1036 M.RFC 0.068uH HK1608 68NJ-T L16905[...]

  • Page 27

    27 RF Unit Parts List REF DESCRIPTION VALUE V/W TOL. MFR'S DESIG VXSTD P/N VERS. LOT SIDE LAY ADR R 1015 CHIP RES. 100k 1/16W 5% RMC1/16 104JATP J24185104 1- A D1 R 1016 CHIP RES. 100k 1/16W 5% RMC1/16 104JATP J24185104 1- A D1 R 1017 CHIP RES. 150k 1/16W 5% RMC1/16 154JATP J24185154 1- A C3 R 1018 CHIP RES. 4.7k 1/16W 5% RMC1/16 472JATP J2418[...]

  • Page 28

    28 REF DESCRIPTION VALUE V/W TOL. MFR'S DESIG VXSTD P/N VERS. LOT SIDE LAY ADR RF Unit Parts List R 1091 CHIP RES. 39k 1/16W 5% RMC1/16 393JATP J24185393 1- A C3 R 1092 CHIP RES. 2.2k 1/16W 5% RMC1/16 222JATP J24185222 1- A C3 R 1093 CHIP RES. 56 1/16W 5% RMC1/16 560JATP J24185560 1- B d2 R 1094 CHIP RES. 680 1/16W 5% RMC1/16 681JATP J24185681[...]

  • Page 29

    29 RF Unit Parts List REF DESCRIPTION VALUE V/W TOL. MFR'S DESIG VXSTD P/N VERS. LOT SIDE LAY ADR R 1505 CHIP RES. 330 1/16W 5% RMC1/16 331JATP J24185331 1- B g1 R 1506 CHIP RES. 2.2k 1/16W 5% RMC1/16 222JATP J24185222 1- A B1 R 1507 CHIP RES. 1.2k 1/16W 5% RMC1/16 122JATP J24185122 1- A B1 R 1508 CHIP RES. 4.7k 1/16W 5% RMC1/16 472JATP J24185[...]

  • Page 30

    30 REF DESCRIPTION VALUE V/W TOL. MFR'S DESIG VXSTD P/N VERS. LOT SIDE LAY ADR RF Unit Parts List Note[...]

  • Page 31

    PANEL Unit 31 Circuit Diagram LIGHT ON: 5.0 V LIGHT OFF: 0 V LIGHT ON: 3.9 V LIGHT OFF: 0 V BUSY: 2.2 V TX: 1.8 V 5.0 V 5.0 V 2.7 V 8.2 V 5.0 V FLASH ROM WRITE: 5.0 V FLASH ROM WRITE: 5.2 V FLASH ROM WRITE: 5.2 V HOOK ON: 4.7 V HOOK OFF: 0.5 V FLASH ROM WRITE: 5.2 V FLASH ROM WRITE: 12.0 V PTT ON: 5.0 V PTT OFF: 0 V 1.6 V 3.2 V 4.9 V 1.8 V 1.8 V 1.[...]

  • Page 32

    PANEL Unit 32 Note[...]

  • Page 33

    PANEL Unit 33 Parts Layout (Side A) A C B E D G F H 1 2 LC87F72C8A (Q2013) BU4066BF (Q2024) S-93C56AMFN (Q20 11) 2SC4617 (BR) (Q2004, 2020) BRPG12 11C (D2004) DA221 (K) (D2003, 2033, 2034) MC2846 (A4) (D20 11) S-80835CNMC (Q2003)[...]

  • Page 34

    PANEL Unit 34 Parts Layout (Side B) a c b e d g f h 1 2 AK2345 (Q2016) M62364FP (Q2014) LA8630M (Q2017) NJM2902V (Q2015, 2021, 2022) NJM78L05 (Q2006) 2SC4617 (BR) (Q2001, 2002, 2005, 2007) PDTC144EE (08) (Q2019) RT1N241M (N2) (Q2008, 2010, 2025) RT1P441U (P3) (Q2009) DA221 (K) (D2001, 2002, 2005, 2009, 2012, 2013, 2036)[...]

  • Page 35

    35 PANEL Unit Parts List REF DESCRIPTION VALUE V/W TOL. MFR'S DESIG VXSTD P/N VERS. LOT SIDE LAY ADR PCB with Component CB1725001 Printed Circuit Board AC031U000 FR0076300 1- C 2001 CHIP CAP. 0.1uF 10V BJ LMK105BJ104KV-F K22108806 1- A B1 C 2002 CHIP TA.CAP. 10uF 6.3V TEMSVA0J106M-8R K78080027 1- A A1 C 2003 CHIP CAP. 0.001uF 50V B GRM39B102K5[...]

  • Page 36

    36 REF DESCRIPTION VALUE V/W TOL. MFR'S DESIG VXSTD P/N VERS. LOT SIDE LAY ADR PANEL Unit Parts List C 2081 CHIP CAP. 10pF 50V CH UMK105CH100DW-F K22178258 1- B d1 C 2083 CHIP CAP. 820pF 50V B UMK105B821KW-F K22178828 1- B c1 C 2085 CHIP TA.CAP. 10uF 6.3V TEMSVA0J106M-8R K78080027 1- B d2 C 2086 CHIP CAP. 0.01uF 16V B GRM36B103K16PT K22128804 [...]

  • Page 37

    37 PANEL Unit Parts List REF DESCRIPTION VALUE V/W TOL. MFR'S DESIG VXSTD P/N VERS. LOT SIDE LAY ADR Q 2019 TRANSISTOR PDTC144EE G3070244 1- B d2 Q 2020 TRANSISTOR 2SC4617 TL R G3346178R 1- A E1 Q 2021 IC NJM2902V-TE1 G1091679 1- B c2 Q 2022 IC NJM2902V-TE1 G1091679 1- B f2 Q 2024 IC BU4066BF-E2 G1092593 1- A E1 Q 2025 TRANSISTOR RT1N241M-T11-[...]

  • Page 38

    38 REF DESCRIPTION VALUE V/W TOL. MFR'S DESIG VXSTD P/N VERS. LOT SIDE LAY ADR PANEL Unit Parts List R 2071 CHIP RES. 1.5M 1/16W 5% RMC1/16S 155JTH J24189063 1- B d2 R 2072 CHIP RES. 1.5k 1/16W 5% RMC1/16S 152JTH J24189027 1- A B2 R 2073 CHIP RES. 1.5k 1/16W 5% RMC1/16S 152JTH J24189027 1- B c1 R 2074 CHIP RES. 180k 1/16W 5% RMC1/16S 184JTH J2[...]

  • Page 39

    39 PANEL Unit Parts List REF DESCRIPTION VALUE V/W TOL. MFR'S DESIG VXSTD P/N VERS. LOT SIDE LAY ADR R 2162 CHIP RES. 82k 1/16W 5% RMC1/16S 823JTH J24189048 1- A E2 R 2163 CHIP RES. 220 1/16W 5% RMC1/16S 221JTH J24189017 1- B f1 R 2164 CHIP RES. 100k 1/16W 5% RMC1/16S 104JTH J24189049 1- B g2 R 2168 CHIP RES. 0 1/16W 5% RMC1/16S JPTH J24189070[...]

  • Page 40

    40 REF DESCRIPTION VALUE V/W TOL. MFR'S DESIG VXSTD P/N VERS. LOT SIDE LAY ADR PANEL Unit Parts List Note[...]

  • Page 41

    18 Copyright 2003 VERTEX STANDARD CO., LTD. All rights reserved. No portion of this manual may be reproduced without the permission of VERTEX STANDARD CO., LTD.[...]