Power Unit; The Power Cannot Be Turned On; Trouble S Ooting - Denon DBP-1611UD Service Manual

TROUBLE S OOTING

1. POWER UNIT

The power cannot be turned on.
Check the FUSE condition.
・FUSE
F101
Check . V STBY output.
・Voltage check.
. V DC (non-switched) voltage is O. .
( P2 13)
※ . V
Check AC DET signal output.
( P4 1)
(AC 0 0 ( . Vp-p))
(AC60 60 ( . Vp-p))
Check Ps On input.
( P4 2)
※ Press the ON STANDBY button to check.
Normally 3.3V is output.
※ O if 3.3V is output even momentarily.
Check ON of MEIN SMPS
・Is
6 7 switched
Check 12V output.
・Voltage check.
12V DC (non-switched) voltage is O. .
（ P 1）
Check V A output.
・Voltage check.
V DC (non-switched) voltage is O. .
・ （ P2 ）
END
O. .
O. .
O. .
O. .
O. .
O. .
O. .
Defect of primary circuit component.
・ BD1 (RBV1 06)
・ IC1 (STR-W67 3)
N.G.
・ U (STR-A60 9 )
・ T1 (EER28(SW TRANS))
・ T2 (EI16(SW TRANS))
and other circuits.
Check parts and soldering.
・ U (STR-A60 9 )
・ T2 (SW TRANS)
N.G.
・ U6 (PC817)
・ U8 (TL431)
and other circuits.
Check parts (surrounding) and soldering.
N.G.
・ D11 D12
・ U4 (PC817)
and other circuits.
Check parts (surrounding) and soldering.
・ P4 (1 PIN FFC 1.0mm)
N.G.
MAIN UNIT
・ U16 (CS8966F-P FP447)
and other circuits.
Check parts (surrounding) and soldering.
・
6 7
N.G.
・ U2 U7
and other circuits.
Check parts (surrounding) and soldering.
・ IC1 (STR-W67 3)
・ T1 (EER28(SW TRANS))
N.G.
・ U1 (PC817)
・ U3 (TL431)
・ D8 (FMEN-210A)
and other circuits.
N.G.
Check parts (surrounding) and soldering.
・SUB POWER UNIT is fault.
30
(IN4007)
(DTS114EUA)
(PC817)