NAD-C730-rec-si维修电路原理图.pdf

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Service Information(revised) C730 Circuit Change PROBLEM: Volume control has to be near maximum for full output on some inputs. CAUSE: Insufficient gain. SOLUTION: Increase the gain of the amplifier stage by 5dB . Replace R707,708 12k to 15k 1/8 w ,R803,804,823,824 from 18k to 20k 1/8 w and R825,826 from 680r to 470r 1/8w resistor. Decrease R975 on the tuner pcb to 15 k 1/8w resistor. Contact: NAD Electronics International 633 Granite Court Pickering, ON Canada L1K 3K1 Voice: 905-831-0799 FAX 905-837-6357 NADwww.NAD RadioFans.CN 收音机爱 好者资料库