Marantz CD6006 - Skipping Unwanted Tracks; Clearing Programmed Tracks

TROUBLE SHOOTING
1. POWER
1.1. The unit does not power on
Does the ON/STANDBY indicator on the front panel light turn red when the power is turned on?
NO
NO
NO
NO
NO
YES
Is the POWER PCB connector disconnected?
• [CN3901, CN3902, CN3903]
Connect the connectors correctly.
Connect the connectors correctly.
Connect the connectors correctly.
Replace the STANDBY TRANS [T3901].
[U3904] Check the input voltage and solder on
any other circuits that carry this output.
Replace [U3904] if there are no abnormalities.
Is the power relay drive con-
trol signal (STBY_CNT) being
received?
• [BN2801 11pin] ON signal
(+3.3V)
or
• [D3934] anode Low signal
(0V)
Check the signal line [IC302 19 pin] from UCOM of the MAIN PCB
and the solder of surrounding circuits.
Replace UCOM if any abnormalities are found.
• [IC302]
Replace the relay [S3901] if
the power relay drive control
signal (STBY_CNT) is normal.
Is the MAIN PCB connector disconnected?
• [BN2801]
Is the STANDBY PCB connector disconnected?
• [BN4101]
Is the STANDBY TRANS winding wire on the
POWER PCB broken?
• [T3901]
Is the ST+3.3V output voltage of the POWER PCB
normal?
• [BN2801 5pin] (ST+3.3V)
Has the POWER PCB power
relay switched?
• [S3901]
Has the TRANS PCB fuse
blown?
• [F3903, F3951, F3952]
Is the Main Trans [T3951] pri-
mary side winding wire on the
TRANS PCB broken?
Check the rectier diode and
also for short circuits in the
secondary side rectier circuit.
Has the regulator output
terminal of the power supply
stabilizer on the secondary
side or the connection be-
tween the circuit and GND
short circuited?
Replace the fuse. Also, replace
the main trans [T3951] if there
is an open circuit between
[BN3920 1-2 pins] or [T3951
12-2 pins].
Replace the fuse. Afterwards,
check the rectier diodes and
also for short circuits on each
of the secondary side recti-
er circuits; replace any faulty
parts.
Replace the fuse. Afterwards,
check the rectier diodes and
also for short circuits on each
of the secondary side recti-
er circuits; replace any faulty
parts.
YES
YES
YES
YES
NO
NO YES
NO
YES YES
YES
YES
NO
NO
NO
YES
YES
YES
31
Caution in
servicing
Electrical Mechanical Repair Information Updating