Denon AVR-1804 Service Manual
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77AVR-1804/884 / AVC-1880Audio SectionIdling CurrentRequired measurement equipment : DC VoltmeterPreparation(1) Avoid direct blow from an air conditioner or an electric fan, and adjust the unit at normal room tempereture15 °C ~ 30 °C (59 °F ~ 86 °F).(2) Presetting● POWER (Power sourse switch) → OFF● SPEAKER (Speaker terminal) → No load (Do not connect speaker, dummy resistor, etc.)Adjustment(1) Remove top cover and set VR101, VR102, VR103, VR104, VR105 on Amp. Unit, VR106 on SURR.-BACK ch Amp.Unit at full counterclockwise ( ) position.(2) Connect DC Voltmeter to test points (FRONT-Lch: TP104, FRONT-Rch: TP105, CENTER ch: TP103,SURROUND-Lch: TP101, SURROUND-Rch: TP102, SURROUND-BACK ch: CP106).(3) Connect power cord to AC Line, and turn power switch "ON".(4) Presetting. MASTER VOLUME : "---" counterclockwise ( min.)MODE : 6CH STEREOFUNCTION : CD(5) Within 2 minutes after the power on, turn VR101 clockwise ( ) to adjust the TEST POINT voltage to 1.5 mV ±0.5 mVDC.(6) After 10 minutes from the preset above, turn VR101 to set the voltage to 2.5 mV ±0.5 mV DC.(7) Adjust the Variable Resistors of other channels in the same way.±±VR104TR104VR105TP105VR106CP106S Back chS RchVR102TP102VR103,TP103C chVR101,TP101F LchS LchF RchDC Voltmeter |
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