Denon ADV-1000 Service Manual page 13

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3. DVD no operation
(MECHA ERR display)
Check connector insertion.
P. SUPPLY (1U-3434-2):
[CX171/CW035]
DVD MAIN (GU-3430):
[CX081/CX082]
Mecha. Unit: [CX241/CX151/CX051]
Check voltage of power wire.
[CX071] 7P PH for P. SUPPLY P.W.B.:
+5V/ +12V/
Perform operation check after
changing DVD MAIN P.W.B.
(GU-3430) with a perfect one.
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No
Re-insert the connector.
No
Refer to "6. Switching power no output".
GND]
There is something wrong in DVD MAIN
No
P.W.B. (GU-3430).
Check IC101(49)XIN, (105)CLK,
(116)PCLK2X 27MHz output on DVD
MAIN P.W.B.
There is something wrong in DVD MAIN
P.W.B. (GU-3430).
Check IC101(39)MCLK 94.5kHz
output on DVD MAIN P.W.B.
There is something wrong in DVD MAIN
P.W.B. (GU-3430).
Check IC101(160)AUX0, (161)AUX1
on DVD MAIN P.W.B. whether SCK and
SDA signal of IIC BUS outputted when
power on.
Check soldering of IC101 (208P IC) on
DVD MAIN P.W.B. (GU-3430).
Perform re-soldering.
Check IC501(50)IDERST +5V output on
DVD MAIN P.W.B. (GU-3430).
Check laser drive current and HF
waveform.
Criterion: Iop exceeds 1.5 times of the
initial value.
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Replace the traverse unit.
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Write laser current after the replacement.
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ADV-1000
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After checking soldering of IC106 and
IC101 on DVD MAIN P.W.B. (GU-3430),
replace IC101 if NG. Then change IC106
if still NG.
Change IC101 on DVD MAIN P.W.B.
(GU-3430).
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After checking soldering of IC108,
IC701, and IC101 on DVD MAIN P.W.B.
(GU-3430), replace IC101 if NG. Change
IC108 then IC701 if still NG.
Check soldering of R522, RA127,
and IC101(145) on DVD MAIN
P.W.B. (GU-3430).
Perform re-soldering.
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