Digital Pcb Dir Block - Denon PMA-2500NE Service Manual

6. DIGITAL PCB DIR BLOCK

Check Power Supply (DIR)
DIGITAL PCB
Check the input voltage of [U501]
33_VCC_DIR
Check the OPT IN SPDIF signal input path.
DIGITAL PCB
Check the SPDIF signal
[K503, K504, U502, U501 : 4, 6pin]
Check the I2S signal output path.
DIGITAL PCB
Check the SPDIF signal
[U501 (17)pin] DATA
[U501 (18)pin] LRCK
[U501 (19)pin] BCK
[U501 (20)pin] MCK
Check the AUDIO Signal output -3 (DIR system)
DIGITAL PCB
Check the [N202] output signal
To 5. DAC PCB
Check the COAXIAL IN SPDIF signal input path.
DIGITAL PCB
Check the SPDIF signal
[K501, K502, U502, U501 : 35, 37pin]
Check the I2S signal output path.
OK
OK
OK
Check the AUDIO DATA/CLK
WCK, BCK, PCM_DATA_L/R
OK
OK
NG
Check the cable / connector and its connection.
Check soldering.
• [U501]
NG
Check soldering.
• [K503, K504, U502, U501 : 4, 6pin]
NG
Check soldering.
• [U501, R514 - 517, R208 - 211, U102]
NG
Check soldering.
・[U102, R246]
DAC PCB
・[U411, U413]
NG
Check soldering.
• [K501, K502, U502, U501 : 35, 37pin]
39