Denon DCD-F109, Руководство по обслуживанию

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35
TROUBLE SHOOTING
FLOW CHART NO.1
Is Power LED lit?
Is the +3.3V_NSW line voltage normal?
Is the "H" level MCU Reset to Pin(77) of IC11?
The power cannot be turned on.
Is normal state restored when once unplugged power cord is plugged
again after several seconds?
+3.3V_D is not outputted.
Check IC609 and the periphery circuit, and service it if defective.
Check each voltage regulator circuit and service it if defective.
Is +7V_DRV voltage supplied to IC609?
Check if there is any leak or short-circuiting rectifier
circuit of SUB Power transformer, and service it if
defective.
(PT601,IC611,Q609-Q612,D633-D638)
NO
NO
NO
Check IC11,IC12and the periphery circuit, and service it
if defective.
Check if there is any leak or short-circuiting rectifier
circuit of Power transformer, and service it if defective.
(Main Trans,IC610,D617,D618,D622,D623)
NO
NO
YES
YES
YES
YES
YES
FLOW CHART NO.2