Marantz HD-DAC1 - TROUBLESHOOTING: USB-A Connectivity; USB-A Power and Communication Checks; USB-A Signal Integrity Checks

42
3.4. USB-A
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Check the operation of IC41
DIGITAL PCB (CUP12688)
IC41 (16)pin:RESET is
"Hi"
?
X401 is the oscillator? 48MHz
Check the communication of IC11, IC41, IC43.
Check the USB AUDIO signal.-1 (USB memory connection)
DIGITAL PCB (CUP12688)
IC41 (16)pin:RESET is
"Hi"
?
IC41 (35)pin MCK input 22.5792MHz
IC41(31)pin DATA output 16BIT
IC41(32)pin BCK output 2.8224MHz
IC41(34)pin LRCK output 44.1kHz
Check the DIR (USB memory connection)
DIGITAL PCB (CUP12688)
Check the voltage of IC42
33_VCC_DIR
Check the DIR input and output (USB memory connection)
DIGITAL PCB (CUP12688)
IC42(12)pin BCK input 2.8224MHz
IC42(13)pin LRCK input 44.1kHz
IC42(14)pin DATA IN input 16BIT
IC42(17)pin DATA output 16BIT
IC42(18)pin LRCK output 44.1kHz
IC42(19)pin BCK output 2.8224MHz
IC42(20)pin MCK output 22.5792MHz
Check the USB-A AUDIO signal.-2(USB memory connection)
DIGITAL PCB (CUP12688)
Check the following terminals
IC11, 55pin (SIGNAL_SEL) :
"Hi"
IC11, 40pin (CONT5) :
"Hi"
IC11, 49pin (AUDIO_DSD/PCM) :
"Lo"
Below is the same as DITAL_BLOCK Check the AUDIO signal
output-1
Check the communication with the USB memory.
(USB memory connection)
DIGITAL PCB (CUP12688)
IC41 (40) (41)pin: Communication waveform is OK? D+, D-
Check the cable and the connection of the connector.
Check Soldering
• IC41, IC42, IC43, CN11
MAIN POWER PART PCB(CUP12689-1)
• BN92
USB A PCB(CUP12687-4)
• BN83, CN84, JK81
Check Soldering
• IC24, R202, R454, R450, R451,
R452, R422, R423, R424, R469
Check Soldering
• IC41, IC43, X401, IC11
Check the cable and the connection of the connector.
Check Soldering
• IC42, CN11
MAIN POWER PART PCB(CUP12689-1)
• BN92
Check the cable and the connection of the connector.
Check Soldering
• IC41, IC43
USB A PCB(CUP12687-4)
• BN83, CN84, JK81
Check Soldering
• R422, R423, R424, R415, R416, R417, R418
Check Soldering
• IC11
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N.G.
Check Power Supply
DIGITAL PCB (CUP12688)
• Check the voltage of IC41, IC42, IC43.
• Check the voltage of Q401
33_VCC_USB_A / +5V_VBUS / Q401 EMITTER +1.0V
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