Denon DVD-3930 Service Manual

Also see for DVD-3930: Specification Operating instructions Service manual

Contents

37DVD-3930/3930CI5. GU-3751-1 (AUDIO (DIGITAL) UNIT)/GU-3751-2/3 (AUDIO/MIX/5.1 UNIT)(1) CD, DVD-VIDEO/AUDIO, (SACD-SOURCE DIRECT OFF)Check connection Mecha UNITGU-3751-1(AUDIO (DIGITAL) UNIT)• [CY331] output signalN.G.Check Soldering, FFC cable• [CY331]• [CX331]: GU-3749• FFC cable, insert conditionO.K.Check input signal: IC103GU-3751-1(AUDIO (DIGITAL) UNIT)• [IC103](EP2C8Q208C8N)23(MCK), 87(BCK), 86(LRCK),84(PDATA0: FL/FR), 82(PDATA1: SL/SR),81(PSATA2: C/SW),80(PDATA3: MIXL/MIXR: without SACD) pin checkN.G. Check Soldering.• IC103O.K.Check output signal: IC103GU-3751-1(AUDIO (DIGITAL) UNIT)• [IC103](EP2C8Q208C8N)151(Rfs), 152(R64fs), 149(Tfs1), 150(T64fs1),146(Tfs2), 147(T64fs2), 181(FL/FR), 175(SL/SR),179(C/SW), 173(MIXL/MIXR: without SACD)N.G. Check Soldering.• IC103• 3.3VO.K.Check DSP operationCheck Firm version on DSP• “0000” indicate is N.G.(refer page 18.)N.G.Check Soldering.GU-3751-1(AUDIO (DIGITAL) UNIT)• [IC303]: (DSP RESET)14pin• [IC303] to [IC305] Signal• [IC103] to [IC303] Signal• [IC305]: (FLASH ROM for DSP)O.K.Check DATA Signal -1GU-3751-1(AUDIO (DIGITAL) UNIT)• [IC103](EP2C8Q208C8N)• [IC303](DSP): inputN.G. Check Soldering.• R187, 188, 190, 192, 310, 312, 314, 315O.K.Check DATA Signal -2GU-3751-1(AUDIO (DIGITAL) UNIT)• [IC303](DSP): output121(FL/FR), 126(C/SW), 130(SL/SR),135(MIXL/MIXR) pinEach output pin Level "H": NGO.K.Check DATA Signal -3GU-3751-1(AUDIO (DIGITAL) UNIT)• [IC303](DSP): output• [IC103](EP2C8Q208C8N): inputN.G. Check Soldering.• R316, 318, 320, 322O.K.N.G.w w w . x i a o y u 1 6 3 . c o mQ Q 3 7 6 3 1 5 1 5 0 992894298T E L 1 3 9 4 2 2 9 6 5 1 3 992894298051513673QQTEL 13942296513 QQ 376315150 892498299TEL 13942296513 QQ 376315150 892498299http://www.xiaoyu163.comhttp://www.xiaoyu163.com