Standby Led Flashes While Using Unit; The Power Turned On, But A Sound Does Not Output Normally - Marantz PM6005 Service Manual

3. STANDBY LED flashes while using unit.

(protection circuit is set)
Check each connector

4. The power turned on, but a sound does not output normally.

(Both channels)
4.1 STANDBY LED does not flash (protection mode is not set)
Check each connector
4.2 When the volume is turned up, Mute LED flashes. (protection mode is set)
Repeats ON/OFF for 0.5 second each, and automatically returns to normal operation.
Check input level and each
connector
Refer to ( z 1) in "The power can not be turned on.
(STANDBY LED lights→flash)"
Check whether power is
being supplied to the coil of
the POWER TRANS T0001
Check SPEAKER connection
and SPEAKER short, SPEAKER
resistance value.
When you turn up the volume again after the unit
automatically returns to normal operation and if the
protection circuit is activated, STANDBY LED will
repeat ON/OFF for 0.25 seconds each.
Power not supplied.
Broken wire in POWER TRANS T0001.
Power supplied.
Damaged Selector (U3501)
Mute Circuit (Q6001-6002,L7501-7502).
Power supplied.
Damaged Mute circuit, U1001.
Damaged power amplifier circuit
Malfunction of C7501-7504
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