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HX290 Service Manual

SERVICE MANUAL

VHF FM Marine Transceiver

HX290

EM045N90A

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Summary of Contents for HX290

Page 1: ...1 HX290 Service Manual SERVICE MANUAL VHF FM Marine Transceiver HX290 EM045N90A ...

Page 2: ...eactance Maximum Deviation 5 kHz Spurious Emission 75 dBc typical Microphone Impedance 2 kΩ Receiver Circuit Type Double Conversion Superheterodyne Intermediate Frequencies 1st 21 7 MHz 2nd 450 kHz Adjacent Channel Selectivity 70 dB typical Intermodulation 68 dB typical Hum Noise Ratio 40 dB typical Sensitivity 0 25 µV for 12 dB SINAD Selectivity 25 kHz 70 dB AF Output Internal SP 700 mW 16 Ω for ...

Page 3: ...0B KNOB SCREW SP MIC RA1079500 RUBBER PACKING VOL RA1079400 RING NUT VOL RA0919700 O RING 6X2 2 REF VXSTD P N U24108020 U44105001 U9900068 DESCRIPTION BIND HEAD TAPTITE B M2X8SUS PAN HEAD TAPTITE B M2X5 PAN HEAD TAPTITE B M2X4NI 3 QTY 2 10 3 Unsolder the three battery terminals to remove the MAIN Unit from the Rear Case MAIN UNIT RA1193900 VOL KNOB RA108700B KNOB SCREW SP MIC RA1194200 RUBBER CAP ...

Page 4: ...4 HX290 Service Manual Note ...

Page 5: ...5 Block Diagram HX290 Service Manual ...

Page 6: ...6 Note HX290 Service Manual ...

Page 7: ...PWR Then passes through the audio mute switch Q1033 TC7S66FU the audio volume VR1006 and the audio power amplifier Q1035 TDA2822L pin 7 providing up to 700 mW of audio power to the 16 ohm loudspeaker 3 Squelch Control The squelch circuitry consists of a noise amplifier and band pass filter and noise detector within Q1026 NJM2591V When no carrier received noise at the out put of the detector stage ...

Page 8: ...Meanwhile the reference divider sections of Q1022 LV2105V divides the 21 25 MHz crystal reference from the reference oscillator section of Q1022 LV2105V by 850 to produce the 25 0 kHz loops reference The 25 0 kHz signal from the programmable divider de rived from the VCO and that derived from the reference oscillator are applied to the phase detector section of Q1022 LV2105V which produces a pulse...

Page 9: ...ough famil iarity with its correct use is necessary for complete re alignment Correction of problems caused by misalign ment resulting from use of improper test equipment is not covered under the warranty policy While most steps do not require all of the equipment listed the interactions of some adjustments may require that more complex ad justments be performed afterwards Do not attempt to perfor...

Page 10: ...wer Adjustment Set up the test equipment as shown below and set the DC Power Supply voltage to 7 4 V Set the channel to CH16 Use the key to set the transceiver to HI power With the PTT switch pressed adjust VR1003 so that RF output power is 5 0 W 0 1 W Release the PTT switch then set the transceiver to LOW power by pressing the key With the PTT switch pressed adjust VR1001 so that RF output power ...

Page 11: ...isplay becomes 031 Press the key to save the new setting Press the key repeatedly until the Alignment Item tH is shown on the display Set the RF Signal Generator output to 156 800 MHz at a level of 8 dBµV 3 0 kHz devia tion with a 1 kHz audio tone Press the key to record a threshold level Press and hold the key for one second to save the new setting Turn the transceiver off Terminates the Software...

Page 12: ...12 HX290 Service Manual Note ...

Page 13: ...NAL 40 dBµ 3 30 V TX 0 V RX 2 16 V TX 2 16 V RX 3 18 V TX 3 18 V RX 7 30 V TX 0 V RX SIGNAL Non 0 V RX SIGNAL 40 dBµ 2 36 V TX 0 V RX 7 38 V TX 7 34 V RX 2 58 V TX 2 55 V RX 3 51 V TX 3 47 V RX 2 32 V TX 2 32 V RX 1 87 V TX 1 93 V RX SAVE OFF 2 77 V RX SAVE ON 0 V TX 2 77 V RX 1 53 V TX 1 53 V RX 1 60 V TX 3 17 V RX 2 47 V TX 2 47 V RX 3 17 V TX 3 17 V RX 3 28 V TX 3 28 V PLL UNLOCK 0 V RX 5 00 V ...

Page 14: ...14 MAIN Unit HX290 Service Manual Note ...

Page 15: ...15 MAIN Unit HX290 Service Manual Parts Layout Side A B A D C F E G 1 3 2 4 H µPD78F0484GK Q1028 LM2904PWR Q1014 DTC144EE 26 Q1005 1020 2SC4617 BR Q1039 TC7S66FU E9 Q1033 TDA2822L Q1035 RB715F 3D D1024 ...

Page 16: ...PXDQS PX Q1013 DTC144EE 26 Q1003 1007 1021 1024 1029 1034 1038 LV2105V Q1022 DA221 K D1023 DAN235E D1016 1018 b a d c f e g 1 3 2 4 h UMD5N Q1008 1009 1010 1031 1037 LM2902PWR Q1030 NJM12902V Q1027 RQA0011DNS Q1012 SN74LVC1G66 Q1034 TAR5S33U Q1002 TAR5S50U Q1001 3SK294 UV Q1015 3SK318 YB Q1023 IMN10 N10 D1020 R1EX24008ATAS0I Q1019 NJM2591V Q1026 2SB1132 BA Q1036 ...

Page 17: ...K22178218 1 B f3 C 1039 CHIP CAP 18pF 50V CH GRM1552C1H180JZ01D K22178218 1 B f3 C 1040 CHIP CAP 10uF 6 3V B JMK212BJ106KG T K22080802 1 B e2 C 1041 CHIP CAP 0 1uF 10V B GRM155B11A104KA01D K22108802 1 B c3 C 1042 CHIP CAP 33pF 50V CH GRM1552C1H330JZ01D K22178224 1 B f3 C 1043 CHIP CAP 22pF 50V CH GRM1552C1H220JZ01D K22178220 1 B g3 C 1044 CHIP CAP 0 01uF 25V B GRM155B11E103KA01D K22148834 1 B e2 C...

Page 18: ...CAP 0 001uF 50V B GRM155B11H102KA01D K22178809 1 B a2 C 1119 CHIP CAP 4pF 50V CH GRM1552C1H4R0CZ01D K22178206 1 B f2 C 1120 CHIP CAP 0 01uF 25V B GRM155B11E103KA01D K22148834 1 B f2 C 1121 CHIP CAP 18pF 50V CH GRM1552C1H180JZ01D K22178218 1 B d3 C 1122 CHIP CAP 0 001uF 50V B GRM155B11H102KA01D K22178809 1 B e2 C 1123 CHIP CAP 22pF 50V CH GRM1552C1H220JZ01D K22178220 1 B d3 C 1124 CHIP CAP 0 01uF 2...

Page 19: ...34 1 A A2 C 1191 CHIP TA CAP 22uF 16V TEESVB21C226M8R K78120028 1 B h2 C 1192 CHIP CAP 1uF 6 3V B GRM155B30J105KE18D K22088803 1 A B1 C 1193 CHIP CAP 0 01uF 25V B GRM155B11E103KA01D K22148834 1 A A2 C 1194 CHIP CAP 0 1uF 10V B GRM155B11A104KA01D K22108802 1 A A1 C 1196 CHIP CAP 0 001uF 50V B GRM155B11H102KA01D K22178809 1 A A1 C 1197 CHIP TA CAP 10uF 16V TEESVA1C106M8R K78120077 1 A A1 C 1198 CHIP...

Page 20: ...1102 1 B g2 L 1017 M RFC 0 068uH 2 C1608CB 68NG RF L1691042 1 B e3 L 1018 M RFC 0 1uH HK1608 R10J T L1690528 1 B g2 L 1019 M RFC 0 047uH HK1608 47NJ T L1690524 1 B f2 L 1020 M RFC 0 068uH HK1608 68NJ T L1690526 1 B d3 L 1021 M RFC 0 039uH 2 C1608CB 39NG RF L1691039 1 B f3 L 1022 M RFC 0 082uH HK1608 82NJ T L1690527 1 B c3 L 1023 M RFC 0 039uH 2 C1608CB 39NG RF L1691039 1 B f3 L 1024 M RFC 0 056uH ...

Page 21: ...RMC1 16SK472FTH J24189488 1 B e3 R 1026 CHIP RES 2 7k 1 16W 1 RMC1 16SK272FTH J24189517 1 B e3 R 1027 CHIP RES 560 1 16W 1 RMC1 16SK561FTH J24189513 1 B b1 R 1028 CHIP RES 560 1 16W 1 RMC1 16SK561FTH J24189513 1 B a2 R 1029 CHIP RES 2 2k 1 16W 1 RMC1 16SK222FTH J24189497 1 A B4 R 1030 CHIP RES 330 1 16W 1 RMC1 16SK331FTH J24189510 1 B b3 R 1031 CHIP RES 220k 1 16W 1 RMC1 16SK224FTH J24189533 1 B g...

Page 22: ...A E1 R 1100 CHIP RES 39k 1 16W 1 RMC1 16SK393FTH J24189524 1 B g1 R 1101 CHIP RES 39k 1 16W 1 RMC1 16SK393FTH J24189524 1 B f2 R 1102 CHIP RES 8 2k 1 16W 1 RMC1 16SK822FTH J24189522 1 B f2 R 1103 CHIP RES 2 2k 1 16W 1 RMC1 16SK222FTH J24189497 1 B c1 R 1104 CHIP RES 4 7k 1 16W 1 RMC1 16SK472FTH J24189488 1 B f2 R 1105 CHIP RES 150k 1 16W 1 RMC1 16SK154FTH J24189531 1 B c2 R 1106 CHIP RES 4 7k 1 16...

Page 23: ...70 1 B b2 R 1165 CHIP RES 1k 1 16W 1 RMC1 16SK102FTH J24189487 1 B h1 R 1166 CHIP RES 1k 1 16W 1 RMC1 16SK102FTH J24189487 1 B h1 R 1167 CHIP RES 4 7k 1 16W 1 RMC1 16SK472FTH J24189488 1 A A2 R 1168 CHIP RES 1k 1 16W 1 RMC1 16SK102FTH J24189487 1 A A2 R 1169 CHIP RES 4 7 1 16W 5 RMC1 16S 4R7JTH J24189066 1 A A2 R 1170 CHIP RES 4 7 1 16W 5 RMC1 16S 4R7JTH J24189066 1 A A2 R 1172 CHIP RES 3 9k 1 16W...

Page 24: ...24 HX290 Service Manual Note MAIN Unit ...

Page 25: ...2 CHARGER UNIT When removing the Charger Unit from the Case gently pull on the charger unit while pushing the four charging terminals from the outside of the case Circuit Diagram RA1236500 x 2 pcs SHEET HEAT6X6 Ref VXSTD P N U24208020 Description BIND HEAD TAPTITE P 2 6X8SUS Qty 4 RA1294300 LIGHT GUIDE CD 52 ...

Page 26: ...26 HX290 Service Manual CD 52 Charger Cradle Parts Layout NJW4100V Q2003 Side A Side B 2SB1201S Q2002 BA09CC0FP Q2001 ...

Page 27: ...1 G1094305 1 R 2001 CHIP RES 330 1 4W 5 RMC1 4 331JATP J24245331 1 R 2003 CHIP RES 100k 1 16W 1 RMC1 16 104FTP J24183104 1 R 2004 CHIP RES 27k 1 16W 1 RMC1 16 273FTP J24183273 1 R 2005 CHIP RES 10k 1 16W 5 RMC1 16 103JATP J24185103 1 R 2006 CHIP RES 100k 1 16W 1 RMC1 16 104FTP J24183104 1 R 2007 CHIP RES 10k 1 16W 1 RMC1 16 103FTP J24183103 1 R 2008 CHIP RES 1k 1 8W 5 RMC1 8T 102J J24215102 1 R 20...

Page 28: ...28 HX290 Service Manual Note ...

Page 29: ...HX290 Main Unit Circuit Diagram 1 2 3 5 6 7 4 8 ...

Page 30: ...HX290 Main Unit Circuit Diagram 1 2 3 5 6 7 4 8 ...

Page 31: ...HX290 Main Unit Circuit Diagram 1 2 3 5 6 7 4 8 ...

Page 32: ...HX290 Main Unit Circuit Diagram 1 2 3 5 6 7 4 8 ...

Page 33: ...HX290 Main Unit Circuit Diagram 1 2 3 5 6 7 4 8 ...

Page 34: ...HX290 Main Unit Circuit Diagram 1 2 3 5 6 7 4 8 ...

Page 35: ...HX290 Main Unit Circuit Diagram 1 2 3 5 6 7 4 8 ...

Page 36: ...HX290 Main Unit Circuit Diagram 1 2 3 5 6 7 4 8 ...

Page 37: ...HX290 Main Unit Side A Parts Layout 1 2 ...

Page 38: ...HX290 Main Unit Side A Parts Layout 1 2 ...

Page 39: ...HX290 Main Unit Side B Parts Layout 1 2 ...

Page 40: ...HX290 Main Unit Side B Parts Layout 1 2 ...

Page 41: ...29 HX290 Service Manual Note ...

Page 42: ... VERTEX STANDARD CO LTD All rights reserved No portion of this manual may be reproduced without the permission of VERTEX STANDARD CO LTD Marine Division of VERTEX STANDARD US Headquarters 10900 Walker Street Cypress CA 90630 U S A ...

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