Marantz SA8004/K1SG Service Manual page 43

8U-210103-1(USB_iPod)
Check power supply
8U-210103-1
・Check voltage of U501
(6)(13)(48)(53)(62)(96)(116)(128)(143)pin : 3.3V
Check signal of U501 (FRONT USB/iPod)
8U-210103-1
19pin : Is USB_RES "H"?
・U501
・Check starting oscilltor.
U501 50pin : 16.9344MHz
・Check starting oscilltor.
U501 1pin : 48MHz
・Check signal of U501.
19pin
34pin
37pin
38pin
・Check SPDIF output of U501
・Check D+,D- signal of U501
O.K.
: RTS
: CTS
: SO
: SI
70pin
Q5 USB_RST
Q6 USB_CTS
Q7 USB_SO
Q8 USB_SI
4,5pin
W6 D+
W7 D-
O.K.
END
Check the cable and the connection of connector.
Check soldering.
N.G.
・U811 (8U-210103-1)
・N104 (8U-210103-1)
・U701 (8U-110090-1)
・N701 (8U-110090-1)
Check soldering.
N.G.
・U501
・ R510,L101,L102,L103,L104,L105,L106,L107,L
108,R103,R104,R503
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