Read LG 32LB4DS (CHASSIS:LA73A) Service Manual online
- 27 -
1. Block Diagram For EMF
Check t he device power LED
Check t he device Cable.
Is it USB1.1 cable ?
If th e device is HDD, ch eck a
external po wer adaptor.
Check V BUS_5V
Check t he DC/DC Converter
(IC712)
N
Y
Y
N
N
2. Check Sequence
Replace the cable to USB1.1 cab le
or Replace t he device.
Y
N
Replace th e DC/DC Con verter
(IC712)
Exception
- USB power co ul d b e di sabl ed by inru shi ng curre nt
- In th is case , remo ve the de vice and try to rebo ot the TV (AC pow er off/on )
X260
USB_ link
(IC101)
DC/DC Conv erter
(IC712)
J
A
C
K
C
K
Side B/D
USB1.1_OVRCUR
5V_USB
VBUS_5V
DP,DM
Cable
USB_PWR_DOWN
DEVICE
(HDD or Me mor y)
USB 1.1 cable
3. USB
Click on the first or last page to see other 32LB4DS (CHASSIS:LA73A) service manuals if exist.