DENON hfe denon avr-3805 avc-3890 service en free download

File name hfe_denon_avr-3805_avc-3890_service_en.pdf

For U.S.A. & Canada model SERVICE MANUAL MODEL AVR-3805 AVC-3890 AV SURROUND RECEIVER / AMPLIFIER For purposes of improvement, specifications and design are subject to change without notice. Please use this service manual with referring to the operating instructions without fail. Some illustrations using in this service manual are slightly different from the actual set. 16-11, YUSHIMA 3-CHOME, BUNKYO-KU, TOKYO 113-0034 JAPAN X0197V.02 DE/CDM 0403 AVR3805 / AVC-3890 2 SAFETY PRECAUTIONS The following check should be performed for the continued protection of the customer and service technician. LEAKAGE CURRENT CHECK Before returning the unit to the customer, make sure you make either (1) a leakage current check or (2) a line to chassis resistance check. If the leakage current exceeds 0.5 milliamps, or if the resistance from chassis to either side of the power cord is less than 460 kohms, the unit is defective. 500V 1M (1) (2) (1) (2) 2 AVR-3805 / AVC-3890 3 WIRE ARRANGEMENT If wire bundles are untied or moved to perform adjustment or parts replacement etc.,be sure to rearrange them neatly as they were originally bundled or placed afterward. Otherwise, incorrect arrangement can be a cause of noise generation. Wire arrangement viewed from the top 3 AVR-3805 / AVC-3890 4 - 4 AVR-3805 / AVC-3890 5 ADJUSTMENT Audio Section Idling Current (1U-3469-1) (1U-3469-1) Required measurement equipment: DC Voltmeter : DC Voltmeter Preparation (1) Avoid direct blow from an air conditioner or an electric (1) fan, and adjust the unit at normal room tempereture 15