IC-910H Service manual.pdf - N3UJJ
IC-910H Service manual.pdf - N3UJJ IC-910H Service manual.pdf - N3UJJ
INTRODUCTIONThis service manual describes the latest service informationfor the IC-910H VHF/UHF ALL MODE TRANSCEIVER at thetime of publication.DANGERNEVER connect the transceiver to an AC outlet or to a DCpower supply that uses more than 16 V. This will ruin thetransceiver.DO NOT expose the transceiver to rain, snow or any liquids.VERSION No.#02#04#06#07VERSIONEuropeAustraliaU.S.A.KoreaSYMBOLEURAUSUSA-1KORDO NOT reverse the polarities of the power supply whenconnecting the transceiver.DO NOT apply an RF signal of more than 20 dBm (100 mW)to the antenna connector. This could damage the transceiver’sfront end.To upgrade quality, any electrical or mechanical parts andinternal circuits are subject to change without notice orobligation.ORDERING PARTSBe sure to include the following four points when orderingreplacement parts:1. 10-digit order numbers2. Component part number and name3. Equipment model name and unit name4. Quantity required1110003140 IC LA1150N IC-910H MAIN UNIT 5 pieces8810005770 Screw BiH M3×8 ZK IC-910H Cover 10 piecesAddresses are provided on the inside back cover for yourconvenience.REPAIR NOTES1. Make sure a problem is internal before disassemblingthe transceiver.2. DO NOT open the transceiver until the transceiver isdisconnected from its power source.3. DO NOT force any of the variable components. Turnthem slowly and smoothly.4. DO NOT short any circuits or electronic parts. An insulatedtuning tool MUST be used for all adjustments.5. DO NOT keep power ON for a long time when the transceiveris defective.6. DO NOT transmit power into a signal generator or asweep generator.7. ALWAYS connect a 50 dB to 60 dB attenuator betweenthe transceiver and a deviation meter or spectrum analyzerwhen using such test equipment.8. READ the instructions of test equipment thoroughlybefore connecting equipment to the transceiver.From The N3UJJ.COM Document Library
TABLE OF CONTENTSSECTION 1SPECIFICATIONSSECTION 2 INSIDE VIEWS2 - 1 IC-910H . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 - 12 - 2 UX-910 (OPTIONAL UNIT) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 - 3SECTION 3SECTION 4SECTION 5SECTION 6SECTION 7SECTION 8DISASSEMBLY AND OPTION INSTRUCTIONSCIRCUIT DESCRIPTIONADJUSTMENT PROCEDURESPARTS LISTMECHANICAL PARTSSEMI-CONDUCTOR INFORMATIONSECTION 9 BOARD LAYOUTS9 - 1 VR-A BOARD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 - 19 - 2 VR-B BOARD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 - 19 - 3 RIT BOARD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 - 19 - 4 FUNC BOARD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 - 39 - 5 MIC BOARD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 - 39 - 6 JACK BOARD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 - 39 - 7 DRV BOARD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 - 39 - 8 VARISTOR-A BOARD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 - 39 - 9 VARISTOR-B BOARD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 - 39 - 10 VARISTOR-C BOARD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 - 39 - 11 DISPLAY BOARD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 - 59 - 12 PA UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 - 79 - 13 PLL UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 - 99 - 14 MAIN UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 - 119 - 15 UX-910 MAIN UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 - 13SECTION 10 BLOCK DIAGRAMS10 - 1 MAIN UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 - 110 - 2 PA AND PLL UNITS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 - 210 - 3 FRONT UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 - 310 - 4 UX-910 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 - 3SECTION 11WIRING DIAGRAMSECTION 12 VOLTAGE DIAGRAMS12 - 1 FRONT UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 - 112 - 2 PLL UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 - 212 - 3 PA UNIT (1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 - 312 - 4 PA UNIT (2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 - 412 - 5 MAIN UNIT (1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 - 512 - 6 MAIN UNIT (2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 - 612 - 7 MAIN UNIT (3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 - 612 - 8 UX-910 MAIN UNIT (1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 - 712 - 9 UX-910 MAIN UNIT (2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 - 8From The N3UJJ.COM Document Library
- Page 1: SERVICEMANUALVHF/UHF ALL MODE TRANS
- Page 5 and 6: ■ RECEIVER• Receive system :VHF
- Page 7 and 8: • PA UNITTX/RX switching relay(RL
- Page 9 and 10: SECTION 3DISASSEMBLY AND OPTION INS
- Page 11 and 12: • UT-102 VOICE SYNTHESIZER UNITq
- Page 14 and 15: 4-1-6 10 MHz IF CIRCUIT (MAIN UNIT)
- Page 16 and 17: While in SSB mode, the amplified si
- Page 18 and 19: The passed signals are then applied
- Page 20 and 21: 5-2 PLL ADJUSTMENTSADJUSTMENT30.2 M
- Page 22 and 23: 5-4 RECEIVER ADJUSTMENTSReceiver ad
- Page 24 and 25: RECEIVER ADJUSTMENTS (continued)ADJ
- Page 26 and 27: 5-5 TRANSMITTER ADJUSTMENTSADJUSTME
- Page 28 and 29: TRANSMITTER ADJUSTMENTS (continued)
- Page 30 and 31: 5-6 SOFTWARE ADJUSTMENTADJUSTMENT A
- Page 32 and 33: SOFTWARE ADJUSTMENT (continued)ADJU
- Page 34 and 35: SOFTWARE ADJUSTMENT (continued)ADJU
- Page 36 and 37: 5-7 UX-910 ADJUSTMENTSADJUSTMENT2ND
- Page 38 and 39: UX-910 ADJUSTMENTS (continued)ADJUS
- Page 40 and 41: SECTION 6PARTS LIST6-1 IC-910[FRONT
- Page 42 and 43: [DISPLAY BOARD]REFNO.ORDERNO.DESCRI
- Page 44 and 45: [PLL UNIT]REF ORDERNO. NO.DESCRIPTI
- Page 46 and 47: [PLL UNIT]REF ORDERNO. NO.DESCRIPTI
- Page 48 and 49: [MAIN UNIT]REF ORDERNO. NO.DESCRIPT
- Page 50 and 51: [MAIN UNIT]REF ORDERNO. NO.DESCRIPT
INTRODUCTIONThis service <strong>manual</strong> describes the latest service informationfor the <strong>IC</strong>-<strong>910H</strong> VHF/UHF ALL MODE TRANSCEIVER at thetime of publication.DANGERNEVER connect the transceiver to an AC outlet or to a DCpower supply that uses more than 16 V. This will ruin thetransceiver.DO NOT expose the transceiver to rain, snow or any liquids.VERSION No.#02#04#06#07VERSIONEuropeAustraliaU.S.A.KoreaSYMBOLEURAUSUSA-1KORDO NOT reverse the polarities of the power supply whenconnecting the transceiver.DO NOT apply an RF signal of more than 20 dBm (100 mW)to the antenna connector. This could damage the transceiver’sfront end.To upgrade quality, any electrical or mechanical parts andinternal circuits are subject to change without notice orobligation.ORDERING PARTSBe sure to include the following four points when orderingreplacement parts:1. 10-digit order numbers2. Component part number and name3. Equipment model name and unit name4. Quantity required1110003140 <strong>IC</strong> LA1150N <strong>IC</strong>-<strong>910H</strong> MAIN UNIT 5 pieces8810005770 Screw BiH M3×8 ZK <strong>IC</strong>-<strong>910H</strong> Cover 10 piecesAddresses are provided on the inside back cover for yourconvenience.REPAIR NOTES1. Make sure a problem is internal before disassemblingthe transceiver.2. DO NOT open the transceiver until the transceiver isdisconnected from its power source.3. DO NOT force any of the variable components. Turnthem slowly and smoothly.4. DO NOT short any circuits or electronic parts. An insulatedtuning tool MUST be used for all adjustments.5. DO NOT keep power ON for a long time when the transceiveris defective.6. DO NOT transmit power into a signal generator or asweep generator.7. ALWAYS connect a 50 dB to 60 dB attenuator betweenthe transceiver and a deviation meter or spectrum analyzerwhen using such test equipment.8. READ the instructions of test equipment thoroughlybefore connecting equipment to the transceiver.From The <strong>N3UJJ</strong>.COM Document Library
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