Marantz UD9004/U1B - Page 38

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UD9004
3. 8U-37AK510201(DISPLAY UNIT)
3.1. FL TUBE dosen't light
Check ± F output (5V)
• [JF02] 3-4pin
N.G.
Defect of primary circuit component.
• [VF01] (FL-TUBE(15-BT-114GNK))
and Other Circuits
O.K.
Check -32V_HV output
• Voltage Check
-32V DC (non-switched) Voltage is O.K.?
[JF02] 2pin output
N.G.
Check Parts and Soldering.
• [QF01] (PT6302-SSOP)
and Other Circuits
O.K.
Check +3.3V_DIS output
• Voltage Check
3.3V DC (switched) Voltage is O.K.?
[JF01] 34pin output
N.G.
Check Parts and Soldering.
• [QF01] (PT6302-SSOP)
• [JF01]
• FFC CABLE
and Other Circuits
O.K.
Check Parts and Soldering.
• [QF01] (PT6302-SSOP)
• [VF01] (FL-TUBE(15-BT-114GNK))
• FFC cable
and Other Circuits
O.K.
END