Denon AVR-789 Service Manual

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Denon AVR-789 Service Manual Manual pdf 21 page image

21AVR-1909/789, AVC-1909ADJUSTMENTAudio SectionIdling CurrentRequired measurement equipment: DC Voltmeter1. Preparation(1) Avoid direct blow from an air conditioner or an electricfan, and adjust the unit at normal room temperature 15°C ~ 30 °C (59 °F ~ 86 °F).(2) Presetting• POWER (Power source switch) OFF• SPEAKER (Speaker terminal) No load(Do not connect speaker, dummy resistor, etc.)2. Adjustment(1) Remove top cover and set VR101 FL, FR, C, SL, SR,on Main Amp. Unit, VR401, VR402 on 2ch- Amp. Unitat fully counterclockwise (c) position.(2) Connect DC Voltmeter to test points (FRONT-Lch:TP101, FRONT-Rch: TP105, CENTER ch: TP103,SURROUND-Lch: TP102, SURROUND-Rch: TP104,SURROUND-BACK Lch: TP401, SURROUND-BACKRch: TP402).(3) Connect power cord to AC Line, and turn power switch"ON".(4) Presetting.MASTER VOLUME : "---" counterclockwise (c min.)SPEAKER (Speaker terminal) : No load(Do not connect speaker, dummy resistor, etc.)MODE : 7CH STEREO (5CH STEREO)FUNCTION : CD(5) Within 2 minutes after the power on, turn VR101 clock-wise (x) to adjust the TEST POINT voltage to1.5 mV ± 0.5 mV DC.(6) After 10 minutes from the preset above, turn VR101 toset the voltage to2.0 mV ± 0.5 mV DC.(7) Adjust the Variable Resistors of other channels in thesame way.VR101SRTP104VR101FLTP101TP102VR101SLTP402VR402TP103VR101C VR101FRTP105F Lch S LchS Back RchTP401VR401S Back LchC ch S Rch F RchDC VoltmeterMAIN AMP. UNIT2CH AMP. UNITccxwww. xiaoyu163. comQQ 376315150 992894298TEL 13942296513 992894298051513673QQTEL 13942296513 QQ 376315150 892498299TEL 13942296513 QQ 376315150 892498299http://www.xiaoyu163.comhttp://www.xiaoyu163.com