Denon S-302 Service Manual page 29

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1.2. No Sound,Noise generated
[No Play], [00 00] displayed etc.
(1) CD,DVD PLAY
Check the Emission of Pick-up.
IU-3807(FEP UNIT)
Emission of P.U. laser O.K.?
The test mode "T2" is executed.
Laser current O.K.?
O.K.
Check Spindle drive.
IU-3807(FEP UNIT)
[SPDRV]: "H" level?
O.K.
END
(2) CD or DVD check process
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Check the RF signal.
IU-3807(FEP UNIT)
Check the voltage of Test-Point (TP)
TP[mAMON1] [AMON2]: differential output
about1.0Vp-p
O.K.
END
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(1) Check Soldering of P.U.
short-circuit?
(2) Check the circumference soldering of TR603
and TR604.
N.G (3) Check connector insertion.
[P.U.]-[IU-3807] FFC(CX241)
(4) Check the soldering [IC601] and circumference
soldering of [IC601]
(5) Check the soldering [IC101] ,[IC102]and
circumference soldering of [IC101] ,[IC102]
(1) Check soldering of [IC101]:56, 75pin
N.G (2) Check the circumference soldering of
[SPDRV], [FG] signal.
(3) Check the soldering [IC151] and circumference
soldering of [IC151]
N.G Check Soldering.
Check the circumference soldering of [IC101],
[IC601]
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