Denon DVD-2930 Service Manual

Also see for DVD-2930CI: Supplementary guide Operating instructions Specifications Specification Operating instructions

Contents

27DVD-2930/2930CI1.TROUBLE SHOOTING1. GU-3730-2 (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.?(CX054 1pin output)N.G.Check Parts and Soldering.• [TR913] (2SC5370)• [IC907] (TA76432S)and Other CircuitsO.K.Check +1.2V Output• Voltage Check1.2V DC (switched) Voltage is O.K.?(CX054 2,3pin output)N.G.Check Parts and Soldering.• [TR914] (2SC5370)• [IC908] (TA76432S)and Other CircuitsO.K.Check -12V Output• Voltage Check-12V DC (switched) Voltage is O.K.?(CX033 1pin output)N.G.Check Parts and Soldering.• [TR903] (2SD468)• [R979], [R980] (4.7 (FR))• [D913] (RL10Z)and Other CircuitsO.K.END(Open)