Denon RCD-N9 Service Manual page 12

RemovingnthenAMPnPCBnfromnthenMAINnPCB
Be careful of the following two points when removing and reattaching the AMP PCB to the MAIN PCB.
1. Wait for approximately 5 minutes after turning the power off before removing the wire connector that connects the
SMPS PCB and AMP PCB.
When connected to the SMPS PCB wire connector, a surge current may occur due to the charge stored in the AMP PCB
causing damage to the D-AMP IC70.
2. When attaching the AMP PCB to the MAIN PCB connector, insert the connector pins into the AMP PCB beforehand, and
securely connect while checking that the position is correct.
If the MAIN PCB and AMP PCB terminals are connected incorrectly (if the connection pins are misaligned), the PWM
Processor IC23, D-AMP IC70 may be damaged by the charge stored in the condenser.
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