Denon DNP-720AE Service Manual

Also see for DNP-720AE: Specification Owner's manual Owner's manual Owner's manual Network Setup Guide

243.5. Common partCheck the Power Supply Voltages for DIR.MAIN B'D• +3.3V_D1, [IC112] : 7,11,14,19,26,30,43pinCheck the Power Supply Voltages for DAC.MAIN B'D• +5V_A, [IC103] : 11pinCheck the voltage of each part.MAIN B'D1. [IC106] : 1, 2pinSMPS B'D2. [J1] : 7pinCheck the voltage of each part.MAIN B'D1. [IC101] : 1pin2. [IC100] : 1pin3. [Q100] : 2pin (base) ("H" : OK)SMPS B'D4. [J1] : 1pinNONOCheck the Oscillation waveform.MAIN B'D• XOUT, [IC112] : 28pin→ 24.576MHzCheck the Soldering.MAIN B'D1. [X100]NOYESYESYESYESYESYESYESYESACheck Reset signal for DIR.MAIN B'D• DIR_RST, [IC112] : 41pin ("H" : OK)Check the communication signal for DIR.MAIN B'D• DIR_CL, CE, DI, DO, [IC112] : 37 - 40pinCheck the audio serial data for DAC.MAIN B'D• DIR_DATA, [IC103] : 6pinCheck the audio data output.MAIN B'D• Lch, Rch, [JACK100]Check the control signal for mute.MAIN B'D• A_MUTE, [Q110] : 2pin (base)Check the communication signal for DAC.MAIN B'D• DIR LRCK, [IC103] : 7pin• DIR MCLK, IC103] : 4pin• DIR BLCK, [IC103] : 5pinCheck the voltage of each part.MAIN B'D1. [IC113] : 68pinCheck the voltage of each part.MAIN B'D1. [IC113] : 86 - 89pinCheck the voltage of each part.MAIN B'D1. [IC112] : 21pinCheck the signal of each part.MAIN B'D1. [IC103] : 9, 10pinCheck the voltage of each part.MAIN B'D1. [IC113] : 97pinCheck the voltage of each part.MAIN B'D1. [IC112] : 16, 17, 20pinNONONONONONO