Icom IC-A110EURO Service Manual Addendum
Also see for IC-A110: Price listSpecification sheetInstruction manualService manualInstruction manual
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Oct. 2008 (REPLACEMENT PAGE)4-2 PLL ADJUSTMENTVddDRAINVOLTAGEIddDRAINCURRENTPLL LOCKVOLTAGETUNEVOLTAGEREFERENCEFREQUENCYADJUSTMENTADJUSTMENT ADJUSTMENT CONDITION MEASUREMENT VALUE POINTUNIT LOCATION UNIT ADJUST1121211s Operating frequency :118.000 MHzs Receivings Operating frequency :127.000 MHzs Transmittings Operating frequency :118.000 MHzs Receivings Transmittings Operating frequency :118.000 MHzs Receivings Operating frequency :136.950 MHzs Connect an RF power meter or a50 7 dummy load to the antennaconnector.s TransmittingMAINMAINMAINMAINRearpanelConnect a digital1) Unsolder CP5.multi-meter to drainterminal of Q51.Connect a digitalmulti-meter to thecheck point CP2.Connect a digitalmulti-meter to thecheck point CP1.Loosely couple thefrequency counterto the antenna con-nector.13.5 V650–750 mA–– – –0.5 V0.5 V [A110]0.3 V [A110EURO]0.7 V136.9500 MHzMAINMAINMAINMAINMAINR392R222L41L40R59X14-3 TRANSMITTER ADJUSTMENTOUTPUTPOWERMODULATIONDEPTHHEAD SETMODULATIONADJUSTMENTADJUSTMENT ADJUSTMENT CONDITION MEASUREMENT VALUE POINTUNIT LOCATION UNIT ADJUST1121s Operating frequency :127.000 MHzs No audio applied to the [MIC]jack.s Transmittings Operating frequecy :127.000 MHzs Connect an audio generator tothe [MIC] jack and set as :1 kHz/10 mVrmss Set a modulation analyzer as :HPF : OFFLPF : OFFDe-emphasis : OFFDetector : (P–P)/2s Pre-set R110 and R121 on theMAIN unit to the center position.s Transmittings Set an audio generator as:1 kHz/1 mVrmss Transmittings Operating frequency :127.000 MHzs Connect an audio generator tothe [EXT MIC] jack and set as :1 kHz/25 mVrmss TransmittingRearpanelRearpanelRearpanelConnect an RFpower meter to theantenna connector.Connect a modula-tion analyzer to theantenna connectorthrough an attenua-tor.Connect a modula-tion analyzer to theantenna connectorthrough an attenua-tor.9.0 W90 %30 %30 %MAINMAINMAINR150R121R110R3362) Connect an am-meter to CP5.Recover the solder-ing of CP5 .4 - 3 |
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