Pioneer x-rsm410dvh Service Manual page 37

3. USB PART
TURN ON USB
Check "Searching" or
"USB" Display
Check Reading OK
YES
YES
YES
OK
NO
Check the POWER supply circuit
Check the HRST # signal
Check the USB and DVD part
NO
Check the USB part supply
Check the USB data line (CN205)
(Check DATA LINE pin98_USB_NO, 99_PO)
3-16
(Check P201)
YES
YES
(CN205)
YES
YES
Check the ES8390