DENON Схема SYS-57HT Ver. 1 free download

File name Схема SYS-57HT Ver. 1.PDF

For U.S.A. & Canada model Ver. 1 SERVICE MANUAL MODEL SYS-57HT SPEAKER SYSTEM PACK 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. TOKYO, JAPAN Denon Brand Company, D&M Holdings Inc. X0284 V.01 DE/CDM 0607 SYS-57HT 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 Please heed the points listed below during servicing and inspection. Heed the cautions! Inspect for safety after servicing! Spots requiring particular attention when servicing, such as Check that all screws, parts and wires removed or discon- the cabinet, parts, chassis, etc., have cautions indicated on nected for servicing have been put back in their original posi- labels or seals. Be sure to heed these cautions and the cau- tions, inspect that no parts around the area that has been tions indicated in the handling instructions. serviced have been negatively affected, conduct an insulation check on the external metal connectors and between the Caution concerning electric shock! blades of the power plug, and otherwise check that safety is ensured. (1) An AC voltage is impressed on this set, so touching inter- nal metal parts when the set is energized could cause (Insulation check procedure) electric shock. Take care to avoid electric shock, by for ex- Unplug the power cord from the power outlet, disconnect the ample using an isolating transformer and gloves when