Marantz PM6004/K1B, Service Manual

Page: 35 / 66

35
Refer to <*1><*2> in "The power can not be
turned on. (STANDBY LED lights→flash)"
Broken wire in POWER TRANS
T0001
.
Damaged power amplifier
circuit
Damaged Mute circuit, U1001.
Damaged Selector (U3501)
Mute Circuit (Q6001-6002,L7501-7502).
Check each connector
Check each connector
3. STANDBY LED flashes while using unit. (protection circuit is set)
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)
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.
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.
Malfunction of C7501-7504
Check whether power is being
supplied to the coil of the
POWER TRANS T0001
Power not supplied.
Power supplied.
Power supplied.
Check input level and
each connector
Check SPEAKER connection
and SPEAKER short,
SPEAKER resistance value.