Digital Pcb Usb-Dac Block - Denon PMA-2500NE Service Manual

7. DIGITAL PCB USB-DAC BLOCK

Check the DC voltage
DIGITAL PCB
[C770](+) (USBB3.3V) :
[L703] (USBB1.8V) :
Check the Master clock
DIGITAL PCB
[R750] :
z PCM
Check the I2S signal
DIGITAL PCB
[R736] (USBB_LRCK) :
[R735] (USBB_BCK) :
[R737] (USBB_DATA) :
See 6. DIGITAL PCB DIR BLOCK
z DSD
Check the DSD signal
DIGITAL PCB
[R736] (DSD_BCK) :
[R738] (DSD_DATA_R) :
[R737] (DSD_DATA_L) :
See 5. DAC PCB
+3.3V
+1.8V
OK
22.5792MHz or 24.576MHz
OK
LRCK clock (32KHz - 192KHz)
BCK clock ( 2.112MHz - 12.288 MHz)
PCM data
OK
DSD_BCK
DSD DATA R
DSD DATA L
OK
NG
Check the1. The power cannot be turned on (Power indi-
cator LED is not lit)
NG
Check Soldering or replace for the following parts.
NG
Check Soldering or replace for the following parts.
NG
Check Soldering or replace for the following parts.
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