DENON Схема AVR-1908 & 788 Ver. 3 free download

File name Схема AVR-1908 & 788 Ver. 3.pdf

Ver. 3 Please refer to the MODIFICATION NOTICE. SERVICE MANUAL MODEL JP E3 E2 EK E2A E1C EUT AVR-1908 AVR-788 AV SURROUND RECEIVER 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. Denon Brand Company, D&M Holdings lnc. X0353 V.03 DE/CDM 0802 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. CAUTION Spots requiring particular attention when servicing, such Check that all screws, parts and wires removed or discon- as the cabinet, parts, chassis, etc., have cautions indicated nected for servicing have been put back in their original po- on labels or seals. Be sure to heed these cautions and the sitions, inspect that no parts around the area that has been cautions indicated in the handling instructions. serviced have been negatively affected, conduct an insu- lation check on the external metal connectors and between the blades of the power plug, and otherwise check that safety is ensured. (1) An AC voltage is impressed on this set, so touching in- ternal metal parts when the set is energized could (Insulation check procedure) cause electric shock. Take care to avoid electric shock, Unplug the power cord from the power outlet, disconnect by for example using an isolating transformer and the antenna, plugs, etc., and turn the power switch on. Us- gloves when servicing while the set is energized, un- ing a 500V insulation resistance tester, check that the in- plugging the powe