Denon PMA-1600NE Service Manual page 49

6. DIGITAL PCB DIR BLOCK
Check Power Supply (DIR)
DIGITAL PCB
Check the input voltage of [U501]
33_VCC_DIR
OK
Check the OPT IN SPDIF signal input path.
DIGITAL PCB
Check the SPDIF signal
[K503, K504, U952, U501 : 4, 6pin]
OK
Check the I2S signal output path.
DIGITAL PCB
Check the SPDIF signal
[U501 : 17pin] DATA
[U501 : 18pin] LRCK
[U501 : 19pin] BCK
[U501 : 20pin] MCK
OK
Check the AUDIO Signal output -3 (DIR system)
DIGITAL PCB Check the AUDIO DATA/CLK
Check the [N1810] output signal WCK, BCK,
PCM_DATA_L/R
OK
TO "5. INPUT PCB (Check the INPUT PCB)"
Check the COAXIAL IN SPDIF signal input path.
DIGITAL PCB
Check the SPDIF signal
[K501, U592, U501 : 37pin]
OK
Check the I2S signal output path.
NG
Check the cable / connector and its connection.
Check soldering.
• [U501]
NG
Check soldering.
• [K503, K504, U952, U501 : 4, 6pin]
NG
Check soldering.
• [U501, R514 - 517, R208 - 211, U202]
NG
Check soldering.
・[U202, R246]
INPUT PCB
・[U411, U413]
NG
Check soldering.
• [K501, U592, U501 : 35, 37pin]
7. DIGITAL PCB USB-DAC BLOCK
Check the DC voltage
DIGITAL PCB
[C770](+) (USBB3.3V) : +3.3V
[L703] (USBB1.8V) : +1.8V
OK
Check the Master clock
DIGITAL PCB
[R750] : 22.5792MHz or 24.576MHz
OK
z PCM
Check the I2S signal
DIGITAL PCB
[R736] (USBB_LRCK) : LRCK clock (32KHz -
192KHz)
[R735] (USBB_BCK) : BCK clock ( 2.112MHz -
12.288 MHz)
[R737] (USBB_DATA) : PCM data
OK
See "6. DIGITAL PCB DIR BLOCK"
z DSD
Check the DSD signal
DIGITAL PCB
[R736] (DSD_BCK) : DSD_BCK
[R738] (DSD_DATA_R) : DSD DATA R
[R737] (DSD_DATA_L) : DSD DATA L
OK
See "5. INPUT PCB (Check the INPUT PCB)"
49
NG
TO "2. The power cannot be turned on (Power
indicator LED lights flashes)"
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.