Troubleshooting - Denon ADV-1000 Service Manual

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TROUBLESHOOTING

1. No power
(LED doesn't light.)
Check connector insertion.
P. SUPPLY (1U-3434-2):
[CX171/CX033]
DSP/AUDIO (1U-3435-3):
[CY171/CY191]
Check voltage of IC907 input [+10V] on
P. SUPPLY P.W.B.
Check voltage of IC907 output [+5V] on
P. SUPPLY P.W.B.
Check voltage of IC303 (6)pin RESET
signal [+5V] on DSP/AUDIO P.W.B.
TE
L 13942296513
2. No power
(LED lights.)
Check connector insertion.
P. SUPPLY (1U-3434-2): [CX033]
DSP/AUDIO (1U-3435-3): [CY191]
Check voltage of FFC wire.
[CY191] 19P FFC for DSP/AUDIO P.W.B.:
Check voltage of power wire.
[CX033] 3P PH for DISPLAY P.W.B.:
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Perform check from the step where
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No
Re-insert the connector.
Check soldering of T901 secondary
No
circuit.
Check short-circuit of power line further
No
CX171 connection.
Check soldering of IC302, IC303 on
No
DSP/AUDIO P.W.B.
+5V/ GND
3 1 2
+5V/ GND
1 2 3
is marked in the item 3.
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2 9
8
No
Q Q
3 6 7 1 3 1 5
No
Re-insert the connector.
No
Refer to "6. Switching power no output".
No
Refer to "6. Switching power no output".
co
.
ADV-1000
9 4 2 8
When replacing µcom, µcom
peripheral parts, or Main P.W.B. in
servicing, perform initializing of the
DVD player. (AC power on while
pressing "STOP" and "PLAY" buttons
of the unit.)
Check after replacing IC303 on DSP/
AUDIO P.W.B. (1U-3435-3), then change
IC302 if still NG.
0 5 8 2 9 9 4 2 8
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9 9
9 9
12