Denon DVD-9000 Service Manual

Also see for DVD-9000: Setup guide Specifications Specifications Operating instructions Operating lnstructions

Contents

13DVD-9000/DVD-A1TROUBLESHOOTING1. No power(FL tube doesn't light.)Check connector insertion. Switching power (GU-3391-2):[CX024, CX025, CX026, CX041,CX141] Main PCB (GU-3389):[CX031, CX051, CX131, CX141,CX171, CX272]Re-insert the connector. When replacing μcom, μcomperipheral parts, or Main PCB,perform initializing of DVD player.Check switching power (GU-3391-2)voltages. [CX141]: 14P PH for Main PCB:5 , 1 2 +5V, 1 4 (3.3V)Replace the switching powerunit (GU-3391-2).(1) Check reset signal (3V) at 67pin ofIC601 on KEY/DISP PCB.(2) Check 4.3MHz at 65pin of IC601.(1) Check R681, R602 solderring.(2) After checking X601 and IC601soldering, change X601.If still NG after changing, replaceIC601.Check switching power (GU-3391-2)voltages. [CX041]: 4P PH for Main PCB:1 +3.6VCheck soldering of IC201 on Main PCB(GU-3389).Check after replacing IC201 on MainPCB (GU-3389).Check switching power (GU-3391-2)voltages. [CX141]: 14P PH for Main PCB:1 +12V 2 -12V 3 +5V9 3.3V 1 2 +5V 1 3 +3.3V [CX041]: 4P PH for KEY/DISP PCB:1 ON/ST(3.6V) 2 -24V 3 -29V 4 -32VReplace the switching power unit(GU-3391-2).ANoNoNoNo NoNoPerform operation check afterchanging Main PCB (GU-3389) witha perfect one.There is something wrong in Main PCB(GU-3389).→ Check 27MHz output of IC101 (49)pin/XIN, (105) pin/CLK, and (116) pin/PCLK2X on Main PCB.Check soldering of IC108, IC110 andIC116 on Main PCB (GU-3389), thenchange IC101 if it's NG. Change IC111 ifit's still NG.No NoNote: When switching power unit is repairable, refer to the waveforms and voltages shown in Schematic Diagram.