Denon DVD-3930 Service Manual

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

Contents

30DVD-3930/3930CI1. 5TROUBLE SHOOTING1. GU-3750-2 (DIGITAL POWER UNIT)Check FUSE Condition• FUSE (F901) OPEN?N.G.Check Primary Parts and Soldering.• [D901~D904]• [IC901]• [C904]O.K.Check +3.3V_NSW Output• Voltage Check3.3V DC (non-switched) Voltage is O.K.?(CW132 4,5pin output)N.G.Check Parts and Soldering.• [IC902] ALL pin (TA76432S)• [IC906] ALL pin (PC123-Y)• [D908] (FMJ-2303)• [TR901] (2SA933A)• [D906] (1SS133)• [C907] (47/50)• [C909] (47/50)and Other CircuitsO.K.Check +3.3V Output• Voltage Check3.3V DC (switched) Voltage is O.K.?(CW132 3pin output)N.G. Check Parts and Soldering.• [TR910] (RSS100N03)and Other CircuitsO.K.Check +12V Output• Voltage Check12V DC (switched) Voltage is O.K.?(CW132 1pin output)N.G.Check Parts and Soldering.• [TR902] (2SB1268)• [D910] (FMB-G19L)• [IC910] (KIA7812API)and Other CircuitsO.K.Check -32V Output• Voltage Check-32V DC (switched) Voltage is O.K.?(CX031 1pin output)N.G.Check Parts and Soldering.• [R978] (2.2 )• [R953] (2.2 )• [TR904] (2SB1185)• [ZD903] (MTZJ36B)• [D914] (AG01Z)and Other CircuitsO.K.Check +2.5V Output• Voltage Check2.5V DC (switched) Voltage is O.K.?(CX064 2pin output)N.G.Check Parts and Soldering.• [TR913] (2SC5370)• [IC907] (TA76432S)and Other CircuitsO.K.Check +1.5V Output• Voltage Check1.5V DC (switched) Voltage is O.K.?(CX064 3,4pin output)N.G.Check Parts and Soldering.• [TR914] (2SC5370)• [IC908] (TA76432S)and Other CircuitsO.K.Check +8V Output• Voltage Check+8V DC (switched) Voltage is O.K.?(GU-3793, C803 +Terminal)N.G. Check Parts and Soldering.• [IC801] (KIA7808API)and Other CircuitsO.K.END(Open)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