Standard Horizon QUEST+ GX1256S Service Manual
  1. Manuals
  2. Brands
  3. Standard Horizon Manuals
  4. Transceiver
  5. QUEST+ GX1256S
  6. Service manual
Standard Horizon QUEST+ GX1256S Service Manual

Standard Horizon QUEST+ GX1256S Service Manual

25 watt vhf/fm marine transceiver
Hide thumbs Also See for QUEST+ GX1256S:
Table of Contents

Advertisement

Quick Links

Download this manual
25 Watt VHF/FM Marine Transceiver
QUEST+ GX1256S
SERVICE MANUAL
EM005N90A
1

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the QUEST+ GX1256S and is the answer not in the manual?

Questions and answers

Subscribe to Our Youtube Channel

Related Manuals for Standard Horizon QUEST+ GX1256S

Summary of Contents for Standard Horizon QUEST+ GX1256S

  • Page 1 25 Watt VHF/FM Marine Transceiver QUEST+ GX1256S SERVICE MANUAL EM005N90A...

  • Page 2: Specifications

    Specifications GENERAL Channels: All USA, International and Canadian Input Voltage: 13.8 VDC ±20% Current Drain: Standby 0.5 A Receive 1.5 A Transmit 5.0 A (Hi); 1.5 A (Lo) Dimensions: 2-1/2” H x 6-5/16” W x 6-5/16” D (64 H x 160 W x 160 D mm) Flush-Mount Dimensions: 2”...

  • Page 3: Exploded View & Miscellaneous Parts

    Exploded View & Miscellaneous Parts RA045870A (BLACK) SLEEVE ASSY BK RA042250A (WHITE) SLEEVE ASSY RA0422700 RUBBER PACKING FRONT RA0421500 (x 2pcs) O RING (SCREW) P1091158 MR-S AM001N RA0422900 O RING M CONECT RA0423000 HOLDER PLATE PWR RA041830A SHIELD CASE COVER F T9207081 RA0562100 WIRE ASSY AM005N...
  • Page 4 Note...

  • Page 5: Block Diagram

    Block Diagram...

  • Page 6: Connection Diagram

    Connection Diagram...

  • Page 7: Circuit Description

    Circuit Description Reception and transmission are switched by a shift regis- After volume adjustment by the AF power amplifier Q1044 (LA4425A), the audio signal is passed to the exter- ter IC Q1020 (BU4094BCFV) which is controlled by seri- nal Speaker terminal in the accessory cable and 16 Ω in- al data lines from the CNTL Unit.

  • Page 8: Dsc Encoder/ Decoder

    Circuit Description Voice or DSC (Digital Selective Calling) encode signal in- DSC Encoder/ Decoder puts from the LPF Q1002 (NJM12902V) is FM-modulat- Encoder ed in the VCO of the synthesizer. Synthesizer output, af- The DCS (Digital Selective Calling) encode signal which ter passing through diode switch D1006 (DAN235U), is D / A c o n v e r t e d i n t h e 8 - b i t M P U I C Q 2 0 0 1 amplified by driver Q1017 (2SC3357-RF), and RF power...

  • Page 9: Required Test Equipment

    Also, Standard Horizon, and that this temperature be held constant between 68 °F a division of VERTEX STANDARD, must reserve the right and 86 °F (20 °C and 30 °C).

  • Page 10: Reference Frequency Adjustment

    Alignment Note: Adjust the output of the tracking generator so that Reference Frequency Adjustment RF AMP and spectrum analyzer will not saturate. Setup the test equipment as shown below. Figure shows the reference wave form. The wave form Sampling Coupler varies with measuring instruments.

  • Page 11: Confirmation Of Vco

    Alignment Software Alignment Mode Overview of Test Mode The “Software Alignment Mode” has been build in the The test mode has been build in the microprocessor in or- microprocessor in order to adjust the performance of trans- der to adjust and comfirm the performance of transceiver. ceiver.

  • Page 12: Adjustment And Confirmation Of Transmit Power

    Alignment — Confirmation — Adjustment and Confirmation of Transmit Power Set the output of the AG to 1 kHz and 150 mV. Adjust power at high and low in the transmit mode, and Set the channel to EXP01, confirm that maximum de- confirm power in the specified bandwidth.

  • Page 13: Confirmation Of Receive/Transmit Nmea Data

    Alignment Confirmation of receive/transmit NMEA data Confirmation of DSC Operation Input the NMEA format data output from the GPS receiver — Confirmation — to NMEA Input terminal (Blue wire of the ACC Cable) of Prepare the confirmation transceiver (GX1255S). transceiver and display it to the LCD of the transceiver. Input below data to the confirmation transceiver in Setup the test equipment as shown below.
  • Page 14 Alignment Note...

  • Page 15: Main Unit

    MAIN Unit Circuit Diagram RX: +6.0 dBµ (21.4 MHz) RX: +4.0 dBµ RX: 7.6 V RX: –7.0 dBµ (21.4 MHz) RX: 7.5 V RX: 1.0 V RX: –11 dBµ RX: 0 V RX: 1.9 V RX: 0 V TX: 0.7 V RX: 2.1 V RX: 7.8 V RX: 1.7 V (@–10.0 dBµ)
  • Page 16 MAIN Unit MAIN Unit Note...
  • Page 17 MAIN Unit Parts Layout RA35H1516 LA4425A NJM7808FA (Q1012) (Q1044) (Q1006) BU4053BCFV NJM12902V NJM2904V (Q1041) (Q1002) (Q1001, 1003) TA31136FN BU4066BCFV (Q 1037) (Q1036) BU4094BCFV (Q1020) MB15A02PFV1 (Q1028) 2SK520 (K41) 3SK320 (U7) (Q1030) (Q1031) NJM78M05DL1A 2SA1602A (MF) 2SB1301 (ZQ) (Q1011) (Q1014) (Q1004) 2SC3357 (MF) 2SC4154 (LE) DTA144EE (16)
  • Page 18 MAIN Unit Parts Layout NJM2212M 2SA1162GR (SG) 2SB1301 (ZQ) (Q1043) (Q1032) (Q1005) 2SC2712GR (LG) RT1N441U (M3) MC2850 (A7) (Q1033) (Q1010, 1023) (D1016, 1017) 2SC4154 (LE) (Q1021, 1038, 1039, 1042) 2SC4400 (RT4) (Q1035) 2SC5006 (24) (Q1019) 1SS302 (C3) 1SS321 (F9) (D1008) (D1002) DAN235U (M) (D1006)
  • Page 19 MAIN Unit Parts List DESCRIPTION VALUE TOL. MFR'S DESIG VXSTD P/N VERS. LOT SIDE LAY ADR PCB with Components CB2618001 Printed Circuit Board AM005N000 FR011110C C 1001 CERAMIC CAP. 15pF CHU5 150J6 K02179104 C 1003 CHIP CAP. GRM39CH040C50PT K22174205 C 1005 CERAMIC CAP.
  • Page 20 MAIN Unit Parts List DESCRIPTION VALUE TOL. MFR'S DESIG VXSTD P/N VERS. LOT SIDE LAY ADR C 1113 CHIP CAP. 0.001uF GRM39B102K50PT K22174821 C 1114 CHIP CAP. GRM39CK020C50PT K22174203 C 1115 CHIP CAP. GRM39CH050C50PT K22174206 C 1116 CHIP CAP. 22pF GRM39CH220J50PT K22174219 C 1117...
  • Page 21 MAIN Unit Parts List DESCRIPTION VALUE TOL. MFR'S DESIG VXSTD P/N VERS. LOT SIDE LAY ADR C 1202 CHIP CAP. GRM39F105Z10PT K22105001 C 1203 CHIP CAP. 0.0068uF GRM39B682K50PT K22174834 C 1204 CHIP CAP. 39pF GRM39CH390J50PT K22174225 C 1205 CHIP CAP. 0.1uF GRM39B104K16PT K22124805...
  • Page 22 MAIN Unit Parts List DESCRIPTION VALUE TOL. MFR'S DESIG VXSTD P/N VERS. LOT SIDE LAY ADR CD1001 CERAMIC DISC CDA450C24 H7901430 CF1001 CERAMIC FILTER ALFYM450E=K H3900535 D 1001 DIODE 1N5402 G2090778 D 1002 DIODE 1SS321 TE85R G2070076 D 1003 DIODE XB15A308A2GB G2090742 D 1004...
  • Page 23 MAIN Unit Parts List DESCRIPTION VALUE TOL. MFR'S DESIG VXSTD P/N VERS. LOT SIDE LAY ADR Q 1029 TRANSISTOR 2SC5006-T1 G3350068 Q 1030 2SK520-T2B K41 G3805207A Q 1031 3SK320(TE85L) G4803208 Q 1032 TRANSISTOR 2SA1162GR TE85R G3111627G Q 1033 TRANSISTOR 2SC2712GR TE85R G3327127G Q 1034 TRANSISTOR...
  • Page 24 MAIN Unit Parts List DESCRIPTION VALUE TOL. MFR'S DESIG VXSTD P/N VERS. LOT SIDE LAY ADR R 1067 CHIP RES. 1/16W RMC1/16 331JATP J24185331 R 1068 CHIP RES. 1/16W RMC1/16 220JATP J24185220 R 1069 CHIP RES. 1/16W RMC1/16 103JATP J24185103 R 1070 CHIP RES.
  • Page 25 MAIN Unit Parts List DESCRIPTION VALUE TOL. MFR'S DESIG VXSTD P/N VERS. LOT SIDE LAY ADR R 1144 CHIP RES. 1/16W RMC1/16 563JATP J24185563 R 1145 CHIP RES. 270k 1/16W RMC1/16 274JATP J24185274 R 1146 CHIP RES. 4.7k 1/16W RMC1/16 472JATP J24185472 R 1147 CHIP RES.

  • Page 26: Parts List

    MAIN Unit Parts List Note DESCRIPTION VALUE TOL. MFR'S DESIG VXSTD P/N VERS. LOT SIDE LAY ADR...
  • Page 27 CNTL Unit Circuit Diagram CPU5V RESET 90 msec 4.2 Vp-p 4.0 Vp-p Dimmer Control: 0 ~ 6.1 V “H”: 5.0 V Key Beep: 500 mVp-p “L”: 0 V Weather Alert: 2.5 Vp-p Distress Alert: 5.0 Vp-p Dimmer Control: 13.8 ~ 11.7 V DCS 1300 Hz: 2.2 Vp-p DCS 2100 Hz: 2.5 Vp-p Dimmer Control: 0 ~ 4.8 V...
  • Page 28 CNTL Unit Note...
  • Page 29 CNTL Unit Parts Layout DS2001 SEGMENT Side A HD64F2266TF13 (Q2001) DS2001 COMMON...
  • Page 30 CNTL Unit Parts Layout BR24C64F TC7W14FU CPH6102 (AB) (Q2009) (Q2002) (Q2017) 2SA1602A (MF) DTA144EE (16) 2SC4154 (LE) (Q2007, 2011) (Q2018) (Q2008, 2012, 2013, 2016) NJM78L05UA (8C) PST597CNR (7C) RT1N441U (N3) (Q2003) (Q2005) (Q2004, 2006, 2014) Side B HZM27WA (27A) (D2001, 2002)
  • Page 31 TC7W14FU(TE12L) G1093321 Q 2003 NJM78L05UA TE1 G1091325 Q 2004 TRANSISTOR RT1N441U-T11-1 G3070247 Q 2005 PST597CNR G1092589 Q 2006 TRANSISTOR RT1N441U-T11-1 G3070247 Q 2007 TRANSISTOR 2SA1602A-T11-1F G3116028F Q 2008 TRANSISTOR 2SC4154-T11-1E G3341548E Q 2009 BR24L64F-WE2 G1093876 : Please contact Standard Horizon...
  • Page 32 CNTL Unit Parts List DESCRIPTION VALUE TOL. MFR'S DESIG VXSTD P/N VERS. LOT SIDE LAY ADR Q 2010 PHOTO COUPLER TLP281(GB-TP) G0090037 Q 2011 TRANSISTOR 2SA1602A-T11-1F G3116028F Q 2012 TRANSISTOR 2SC4154-T11-1E G3341548E Q 2013 TRANSISTOR 2SC4154-T11-1E G3341548E Q 2014 TRANSISTOR RT1N441U-T11-1 G3070247 Q 2016...
  • Page 33 CNTL Unit Parts List DESCRIPTION VALUE TOL. MFR'S DESIG VXSTD P/N VERS. LOT SIDE LAY ADR R 2072 CHIP RES. 1/16W RMC1/16 103JATP J24185103 R 2073 CHIP RES. 1/16W RMC1/16 103JATP J24185103 R 2074 CHIP RES. 6.8k 1/16W RMC1/16 682JATP J24185682 R 2075 CHIP RES.
  • Page 34 CNTL Unit Parts List Note DESCRIPTION VALUE TOL. MFR'S DESIG VXSTD P/N VERS. LOT SIDE LAY ADR...

  • Page 35: Circuit Diagram

    VR Unit Circuit Diagram Parts Layout Side A Side B Parts List DESCRIPTION VALUE TOL. MFR'S DESIG VXSTD P/N VERS. LOT SIDE LAY ADR PCB with Components CB2620001 Printed Circuit Board AM005N000 FR0111300 JP3001 WIRE ASSY AM005N T9207056 VR3001 POT. RK0971114 20KA/SW J60800274 VR3002 POT.
  • Page 36 MIC Unit Circuit Diagram Parts Layout Side A Side B Parts List DESCRIPTION VALUE TOL. MFR'S DESIG VXSTD P/N VERS. LOT SIDE LAY ADR C 4001 CERAMIC CAP. 0.001uF UP050B102K-A-B K28179001 D 4001 DIODE RD4.7EB2 G2090158 MC4001 MIC. ELEMENT EM-100PT M3290029 R 4001 CARBON FILM RES.
  • Page 37 CMP25 RAM+ MIC (Option) Exploded View & Miscellaneous Parts RA0522000 RUBBER KNOB (TOP) RA0522400 RA0522700 LIGHT GUIDE (TOP) LOCK PLATE (PTT) RA0433200 HOOK RA0522600 RA0524500 SPACER (PTT) WEIGHT RA0522500 LOCK PLATE RA0522100 RA0528600 (TOP) PTT KNOB SHEET (PCB) RA0524100 REFLECTOR SHEET(LCD) RA0519600 REAR CASE ASSY (WHITE) RA0524200...
  • Page 38 CMP25 RAM+ MIC (Option) Circuit Diagram...

  • Page 39: Parts Layout (Side A)

    CMP25 RAM+ MIC (Option) Parts Layout (Side A) 1SS300 (A3) 2SA1745 (ES) (D1) (Q1) 1SS302 (C3) 2SB1123 (BF) (D2, 3, 4) (Q3) TC7W53FU 2SC4555 (UT) (IC01, 03) (Q4, 5) TC7W14FU (IC07) TA75S01F (SA) 2SD1801S (IC04, 05) (Q6) TA78L05F (AE) LA4627 (IC06) (IC08) M62429FP...
  • Page 40 CMP25 RAM+ MIC (Option) Parts Layout (Side B) COMMON SEGMENT LCD (LCD1)
  • Page 41 CMP25 RAM+ MIC (Option) Parts List DESCRIPTION VALUE TOL. MFR'S DESIG VXSTD P/N VERS. LOT SIDE LAY ADR PCB with Components S8101542 Chip Tantal 4.7uF ESVP1A4R7M K48120031 Chip Cap 1000P GRM39B102K50PT K22174821 Chip Cap 1000P GRM39B102K50PT K22174821 Chip Cap 1000P GRM39B102K50PT K22174821 Chip Cap...
  • Page 42 CMP25 RAM+ MIC (Option) Parts List DESCRIPTION VALUE TOL. MFR'S DESIG VXSTD P/N VERS. LOT SIDE LAY ADR Power Switching/Power Drive 2SB1188 2SB1123 S8101525 Low Frequ. Amp 2SC4097 2SC4555 S8101527 Low Frequ. Amp 2SC4097 2SC4555 S8101527 Power Switching 2SD1758 2SD1801S G3418018S Chip Resister 1/16W...
  • Page 44 © 2004 VERTEX STANDARD CO., LTD. All rights reserved. Marine Division of VERTEX STANDARD No portion of this manual US Headquarters may be reproduced 17210 Edwards Rd., Cerritos, CA 90703, U.S.A. without the permission of VERTEX STANDARD CO., LTD.

Table of Contents