Denon RCD-N9 Service Manual page 41

2.7 . USB / ETHERNET / Wi-Fi
Check Power Supply Voltages for Network.
Network PCB
•[CN92]：1, 2, 3pin：+5V_SW
Check Power Supply Voltages for USB.
FRONT USB PCB
•[IC60]：5pin +5V
Check Power Supply Voltages for CY920.
Network PCB
•[IC63]：5, 6, 7pin NET3.3V
•[IC64]：5, 6, 7pin NET1.8V
•[IC65]：5, 6, 7pin NET1.2V
•[IC66]：5, 6, 7pin NET2.5V
•[CN66]：61pin USB_VBVS +5V
Check Reset signal for ETHERNET PCB (CY920).
Network PCB
•[CN66]：15pin 920_RESET or [WF60]：17pin N_RST
"Hi" level OK?
Check Digital Audio Data for CODEC.
Network PCB
•[CN66]：26pin MCK
•[CN66]：28pin LRCK
•[CN66]：30pin BCK/SCK
•[CN66]：34pin DATA/DSD_L
•[WF60]：22pin E_MCLK
•[WF60]：23pin E_LRCK
•[WF60]：24pin E_SCLK
•[WF60]：25pin E_DATA
To 2.1. COMMON(signal)
OK
OK
OK
OK
OK
Check the solder and replace any faulty parts.
NG
Network PCB
•[CN92]：1, 2, 3pin：+5V_SW
SMPS PCB
•[IC95], [L923]：+5V
•[IC97]：IN 1,2,3pin +5V / OUT 6,7,8pin +5V
Check the solder and replace any faulty parts.
•[IC60]：5pin +5V
NG
•[CN62]：1pin +5V on FRONT USB PCB
•[JK60]
Check the solder and replace any faulty parts.
•[IC63] on Network PCB
NG
•[IC64] on Network PCB
•[IC65] on Network PCB
•[IC66] on Network PCB
•[CN66] on Network PCB
Check the solder and replace any faulty parts.
NG
•[CN66]：19pin
•[WF60]：18pin
Check the solder and replace any faulty parts.
NG
•[CN66]：26, 28, 30, 34pin
•[WF60]：22, 23, 24, 25pin
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