640P hfe cambridge audio 540p 640p service free download

File name hfe_cambridge_audio_540p_640p_service.pdf

640P/540P Issue Date: 23rd August 2005 ________________________________________________________________________ SERVICE MANUAL ________________________________________________________________________ SPECIFICATIONS: 540P 640P 640P (MM) (MC) Max Power Consumption 5W 5W 5W Gain @ 1kHz 39dB 39dB 55dB Input Impedance 47k 47k 100R Nominal Output 300mV 300mV 300mV Sensitivity for Nominal Output 3.35mV 3.35mV 0.5mV THD 20Hz-20kHz 0.009% 0.005% 0.002% RIAA Curve Accuracy +/-0.65dB <+/-0.3dB <+/-0.3dB 25Hz-20kHz 20hz-50kHz 20Hz-50kHz (Subsonic filter off) Signal to Noise Ratio >85db >86dB >72dB Using Audio Precision RIAA-1 with grounded inputs. Crosstalk @ 20kHz >76dB >83dB >69dB Dimensions (HxWxD) mm 46x215x133 46x215x133 46x215x133 inches 1.8x8.5x5.2 1.8x8.5x5.2 1.8x8.5x5.2 Weight kg 0.8 0.9 0.9 lbs 1.8 2 2 AP18705/1 Gallery Court Hankey Place London SE1 4BB UK Tel: +44 (0)20 7940 2200 Fax: +44 (0)20 7940 2233 1 540P & 640P SERVICE MANUAL TABLE OF CONTENTS Safety Precautions & Important Notes 3 540P/640P Main Assembly BOM 4 540P Main PCB Schematic 5 540P Main PCB Layout (Top Side) 6 540P Main PCB Layout (Bottom Side) 7 540P Main PCB BOM 8-9 640P Main PCB Schematic 10 640P Main PCB Layout (Top Side) 11 640P Main PCB Layout (Bottom Side) 12 640P Main PCB BOM 13-15 IC Pin Layout Details 16