1. USB 1.1 Block Diagram For EMF
Check the device power LED
Check the device Cable.
Is it USB1.1 cable?
If the device is HDD, check a
external power adaptor.
Check VBUS_5V
Check the DC/DC Converter
(IC712)
N
Y
Y
N
N
2. Check Sequence
Replace the cable to USB1.1 cable
or Replace the device.
Y
N
Replace the DC/DC Converter
(IC712)
•Exception
-USB power could be disabled by inrushing current
-In this case, remove the device and try to reboot the TV (AC power off/on)
X260
USB_ link
(IC101)
DC/DC Converter
(IC712)
J
A
C
K
Side B/D
USB1.1_OVRCUR
5V_USB
VBUS_5V
DP,DM
Cable
USB_PWR_DOWN
DEVICE
(HDD or Memory)
USB 1.1 cable
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