Denon AVR-4520CI Service Manual

Contents

271.3. Error displaySee the following table for each "Error information" display and its explanation (status).Display order is q,w,e,r,t,y,u,i,o.Condition Status FL Display Trouble shootingqFirm CheckNGCompared with the destination settingon the board. This is displayed when themodel name or destination informationwritten into the firmware does not match.(b1)F I R M E R R O R• Please check thedestination-resistors(R2009/R2010, HDMI B'D).• Please write the firmwareof correct destination.wSUB NG No response from SUB microcomputer. S U B E R R O R 0 1 • Please check SUB (U2101)and arroud circuits.eV-DECODERNG-1An error has occurred as a result of theDDR memory communication test whileinitializing Video Decoder (ADV7850).V - D E C O D E R E R R 0 1 • Please check ADV7850(U1102, HDMI B'D) andarroud circuits.V-DECODERNG-2No response from the DDR memorycommunication test while initializing VideoDecoder (ADV7850).V - D E C O D E R E R R 0 2rIP SCALERNGAn error has occurred in the i/p Scaler(ADV8003)initial settings. The error is aDDR memory Loopback Test error.I P S C A L E R E R R 0 1 • Please check ADV8003(U1401, HDMI B'D) andarroud circuits.Testing writing data between IP SCALERand DDR resulted in no response. I P S C A L E R E R R 0 2tGUI VersionNGError occurs in GUI version and Mainμ-com version.(b2) G U I V E R . E R R O R • Please check the firmwareof correct version.yDIR NG No response from DIR D I R E R R O R 0 1• Please check DIR（U103,U104, HDMI B'D) andaround circuits.uDSP1 NGWhen DSP1 code boot is performed, theDSP FLAG0 port does not change to "H"even if DSP reset is executed.D S P 1 E R R O R 0 1• Please check DSP1（U101,DSP B'D) and aroundcircuits.Before DSP1 command is issued, theDSP BUSY port does not change to "L". D S P 1 E R R O R 0 2When DSP1 data read is performed,executing WRITE="L" does not result inACK="H".D S P 1 E R R O R 0 3When DSP1 data read is performed,executing REQ="L" does not result inACK="L".D S P 1 E R R O R 0 4When DSP1 data writing is performed,executing WRITE="H" does not result inACK="H".D S P 1 E R R O R 0 5When DSP1 data writing is performed,executing REQ="L" does not result inACK="L".D S P 1 E R R O R 0 6DSP2 NGWhen DSP2 code boot is performed, theDSP FLAG0 port does not change to "H"even if DSP reset is executed.D S P 2 E R R O R 0 1• Please check DSP2（U201,DSP B'D) and aroundcircuits.Before DSP2 command is issued, theDSP BUSY port does not change to "L". D S P 2 E R R O R 0 2When DSP2 data read is performed,executing WRITE="L" does not result inACK="H".D S P 2 E R R O R 0 3When DSP2 data read is performed,executing REQ="L" does not result inACK="L".D S P 2 E R R O R 0 4When DSP2 data writing is performed,executing WRITE="H" does not result inACK="H".D S P 2 E R R O R 0 5When DSP2 data writing is performed,executing REQ="L" does not result inACK="L".D S P 2 E R R O R 0 6