Marantz Icemaker - U-310151 (Digital Pcb) Usb-B Block

O.K.
Check the signal pass with input of COAXIAL IN SPDIF
8U-310151
(DIGITAL PCB)
Check the SPDIF signal
K301, C321, R329, U303, R325, U302 (37)pin
Check the signal pass with output of I2S
Check Soldering
• K301, C321, R329, U303, R325, U302 (37)pin
N.G.
O.K.
O.K.
Check Master clock
•
8U-310151
DIGITAL PCB
• R0406 (USBB_MCK) : 22.5792MHz or 24.576MHz
Go to DIR BLOCK
Check I2S signal
•
8U-310151
DIGITAL PCB
• R0446 (USBB_LRCK) : LRCK clock ( 32KHz - 192KHz)
• R0445 (USBB_BCK) : BCK clock ( 2.112MHz - 12.288 MHz)
• R0447 (USBB_DATA) : PCM data
Check "5. 8U-310151 (DIGITAL PCB) DIR BLOCK,
Check Power Supply(DIR)", and if there are no problems
check or replace the soldering of Q701, Q706, U700 and
U701.
Check Soldering or replace
• U301, U305-U308. U804, U805
Check Soldering or replace
• U402-U404
Replace
8U-310151
DIGITAL PCB
N.G.N.G.
N.G.
N.G.
Check DC voltage
•
8U-310151
DIGITAL PCB
• L0701 (USBB3.3V) : +3.3V
• L0702 (USBB1.8V) : +1.8V
• L0700 (USBB1.2V) : +1.2V
b
When check the DC voltage, Use GNDUSBB
on the
8U-310151
DIGITAL PCB
O.K.
6. 8U-310151 (DIGITAL PCB) USB-B BLOCK
35