IC-910H Service manual.pdf - N3UJJ
IC-910H Service manual.pdf - N3UJJ IC-910H Service manual.pdf - N3UJJ
SOFTWARE ADJUSTMENT (continued)ADJUSTMENT ADJUSTMENT CONDITION DISPLAY OPERATIONADJUSTMENTITEM (6)RF PEAK12• Enter software adjustment mode (Referpage 5-12).• Push [6] key to enter the RF peak adjustmentfor TX.• Connect an RF power meter to [VHF ANT]connector.• Connect an SSG to P501 on the PA unitvia the JIG cable (A) and set as:Frequency : 10.850 MHzLevel : 18 mV* (–22 dBm)Modulation: OFFNOTE: While transmitting, adjust SSG’slevel and keep the output power less than30 W.USBUSBPush [RIT] key to strat transmitting.• Pushing [SET] key, tune the [MAINDIAL] to maximum.• Adjust L501, L502 on the PA unit(illustration for location page 5-9) tomaximum.• Pushing [SET] key, tune the [MAINDIAL] to maximum, then push [RIT]key to store peak setting into memoryand to step next.3USB(1) Pushing [ATT] key, tune the[MAIN DIAL] to maximum.(2) Pushing [SET] key, tune the[MAIN DIAL] to maximum.(3) Repeat (1) and (2) several timesuntil output power will be peak,then push [RIT] key to store peaksetting into memory and to stepnext.4USBSame as step 3. Then turn powerOFF and ON to return the normaloperation mode. Then continue toadjust from step 4 of the RF PEAKadjustment (page 5-8).ADJUSTMENTITEM (7)TX POWER/METER(for 144 M)12• Enter software adjustment mode (Referpage 5-12).• Push [7] key to enter the TX power/meteradjustment.• Connect an RF power meter to [VHF ANT]connector.CWCWPush [RIT] key to strat transmitting.Tune the [MAIN DIAL] to 100 W(High power). Push [RIT] key tostore the adjustment value intomemory, and to step next.3CWTune the [MAIN DIAL] to 50 W(Middle power). Push [RIT] key tostore the adjustment value intomemory, and to step next.4CWVerify the output power (Low power)is 1–5 W, then push [RIT] key to stepnext.(for 1200 M)5• Connect a digital multimeter or oscilloscopeto check point CP1631.CWPush [RIT] key to strat transmitting.6CWTune the [MAIN DIAL] to 3.0 V at thecheck point CP1681. Push [RIT] keyto store the adjustment value intomemory, and to step next.*This output level of a standard signal generator (SSG) is indicated as SSG’s open circuit.5 - 16From The N3UJJ.COM Document Library
SOFTWARE ADJUSTMENT (continued)ADJUSTMENT ADJUSTMENT CONDITION DISPLAY OPERATIONTX POWER/METER(for 430 M)7• Connect an RF power meter to [UHF ANT]connector.CWPush [RIT] key to strat transmitting.8CWTune the [MAIN DIAL] to 75 W (Highpower). Push [RIT] key to store theadjustment value into memory, andto step next.9CWTune the [MAIN DIAL] to 37.5 W(Middle power). Push [RIT] key tostore the adjustment value intomemory, and to step next.10CWVerify the output power (Low) is 1–5W, then push [RIT] key to step next.ADJUSTMENTITEM (8)DEVIATION123• Enter software adjustment mode (Referpage 5-12).• Push [8] key to enter the deviation adjustment.• MIC gain : Center• Connect an FM deviation meter to [VHFANT] connector through an attenuator andset as:HPF: OFFLPF: 20 kHzDe-emphasis : OFFDetector : (P–P)/2• Connect an audio generator to [MIC] connectorand set as:Frequency : 1.0 kHzLevel : 20 mVrmsFMFMFMNPush [RIT] key to strat transmitting.Tune the [MAIN DIAL] to ±4.5 kHzFM deviation. Push [RIT] key tostore the adjustment value intomemory, and to step next.Tune the [MAIN DIAL] to ±2.25 kHzFM deviation. Push [RIT] key tostore the adjustment value intomemory, and to step next.4• Apply no audio signals to [MIC] connector.FMTTune the [MAIN DIAL] to ±0.6 kHzCTCSS tone deviation. Push [RIT]key to store the adjustment valueinto memory, and to step next.5TFMTune the [MAIN DIAL] to ±0.6 kHzeurope tone deviation. Push [RIT]key to store the adjustment valueinto memory.Then turn power OFF and ON toreturn the normal operation mode.5 - 17From The N3UJJ.COM Document Library
- Page 1 and 2: SERVICEMANUALVHF/UHF ALL MODE TRANS
- Page 3 and 4: TABLE OF CONTENTSSECTION 1SPECIFICA
- 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 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
- Page 52 and 53: [MAIN UNIT]REF ORDERNO. NO.DESCRIPT
- Page 54 and 55: [MAIN UNIT]REF ORDERNO. NO.DESCRIPT
- Page 56 and 57: [PA UNIT]REFNO.ORDERNO.DESCRIPTIONI
- Page 58 and 59: [PA UNIT]REF ORDERNO. NO.DESCRIPTIO
- Page 60 and 61: [PA UNIT]REF ORDERNO. NO.DESCRIPTIO
- Page 62 and 63: [PA UNIT]REF ORDERNO. NO.DESCRIPTIO
- Page 64 and 65: 6-2 UX-910[MAIN UNIT]REFNO.ORDERNO.
- Page 66 and 67: [MAIN UNIT] — UX-910REF ORDERNO.
- Page 68 and 69: [MAIN UNIT] — UX-910REF ORDERNO.
- Page 70 and 71: SECTION 7MECHANICAL PARTS[FRONT UNI
- Page 72 and 73: MP34 (CH)MP34 (CH)MP12 (CH)MP1851 (
- Page 74 and 75: SECTION 8SEMI-CONDUCTOR INFORMATION
- Page 76 and 77: • DIODES1SS301 1SS355 1SS375-TL 1
- Page 78 and 79: • BOTTOM VIEW (RIT BOARD)• BOTT
- Page 80 and 81: • BOTTOM VIEW (VARISTOR-A BOARD)
- Page 82 and 83: • BOTTOM VIEW (DISPLAY BOARD)J10
SOFTWARE ADJUSTMENT (continued)ADJUSTMENT ADJUSTMENT CONDITION DISPLAY OPERATIONTX POWER/METER(for 430 M)7• Connect an RF power meter to [UHF ANT]connector.CWPush [RIT] key to strat transmitting.8CWTune the [MAIN DIAL] to 75 W (Highpower). Push [RIT] key to store theadjustment value into memory, andto step next.9CWTune the [MAIN DIAL] to 37.5 W(Middle power). Push [RIT] key tostore the adjustment value intomemory, and to step next.10CWVerify the output power (Low) is 1–5W, then push [RIT] key to step next.ADJUSTMENTITEM (8)DEVIATION123• Enter software adjustment mode (Referpage 5-12).• Push [8] key to enter the deviation adjustment.• M<strong>IC</strong> gain : Center• Connect an FM deviation meter to [VHFANT] connector through an attenuator andset as:HPF: OFFLPF: 20 kHzDe-emphasis : OFFDetector : (P–P)/2• Connect an audio generator to [M<strong>IC</strong>] connectorand set as:Frequency : 1.0 kHzLevel : 20 mVrmsFMFMFMNPush [RIT] key to strat transmitting.Tune the [MAIN DIAL] to ±4.5 kHzFM deviation. Push [RIT] key tostore the adjustment value intomemory, and to step next.Tune the [MAIN DIAL] to ±2.25 kHzFM deviation. Push [RIT] key tostore the adjustment value intomemory, and to step next.4• Apply no audio signals to [M<strong>IC</strong>] connector.FMTTune the [MAIN DIAL] to ±0.6 kHzCTCSS tone deviation. Push [RIT]key to store the adjustment valueinto memory, and to step next.5TFMTune the [MAIN DIAL] to ±0.6 kHzeurope tone deviation. Push [RIT]key to store the adjustment valueinto memory.Then turn power OFF and ON toreturn the normal operation mode.5 - 17From The <strong>N3UJJ</strong>.COM Document Library
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