Marantz PM7000N Service Manual page 46

7. OLED
6.1. OLED is not lit
Check that the connector between MAIN PCB and DIGITAL PCB is properly attached.
Check that the 23P FFC cable connecting DIGITAL PCB and FRONT PCB is properly attached.
Check the voltage.
DIGITAL PCB
[CN102 : 9Pin] +16V_OLED
With voltage
Check the control signal of OLED.
[WF1502]
No voltage
MAIN PCB
Malfunction of [IC712].
8. No Remote Control Reception
Check that you are using a [RC004PM] remote control and replace the batteries.
Check that the 11P FFC cable connecting DIGITAL PCB and FRONT PCB is properly inserted.
Check the REMOTE signal.
DIGITAL PCB
[WF102 : 10Pin] REMOTE
With signal
Check the REMOTE signal.
DIGITAL PCB
[IC104 : 26Pin] RC_IN
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No signal
FRONT PCB
Malfunction of [RC1501].
Malfunction of [Q1502].
No signal
DIGITAL PCB
Malfunction of [Q105, Q107, Q109].