Denon DVD-2200 Service Manual page 21

1.3. Does not Read Disc
[No PLAY], [00 00] displayed etc.
(1) Disc does not Rotate.
Check the Emission of Pick-up.
Emission of PU laser O.K.?
•
laser
* See attached sheet
O.K.
Check Spindle drive signal.
[DMO]: H level?
" "
•
O.K.
END
(2) CD check process
Check the RF signal.
Check the voltage of Test-Point(TP)
TP [RFAC]: about 1V
•
O.K.
Check connection.
[IC502]--[IC503](16MDRAM)
•
"L"--"H" alternate?
O.K.
END
(3) DVD check process
Check VSTEM. (communication)
VDT(0--7)_COR,
•
XHAC_COR, VEFG_COR,
•
XSHD_COR, DCK_COR
•
"L"--"H" alternate?
O.K.
Check Request Signal
Request From [B/E] to [F/E]
•
[HDRQ_COR]: L level?
" "
O.K.
END
N.G.
current check
(Page 8,9)
N.G.
N.G.
p-p.
N.G.
N.G.
N.G.
(1)Check soldering of P.U.
short-circuit?
•
(2)Check the circumference soldering of TR501
and TR502.
(3)Check connector insertion
[P.U.] -- [GU3570] FFC(CX241)
•
(4)Check soldering.
[IC501], CXD1881AR
•
(5)Check soldering.
[IC508]: FAN8042
•
Check soldering
[IC502]: 111--113pin check.
•
R599, R601, R666--R669
•
[IC505]
•
Check soldering
[IC501]: circumference soldering check.
•
[IC502]: 65--110pin check.
•
Check soldering
[BD(0-15)], [BA(0-9)], [XLCOS], [XUCAS]
•
[XMOE], [XRAS], [XMWR].
[IC502], [IC503]
•
Check soldering
[IC502]: 36--49pin
•
R621--R633
•
R401--411.
•
Check soldering
[IC404]
•
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DVD-2200