Samsung VP-MX10 Service Manual page 33

Troubleshooting
4-6
USB doesn't work
Does USB CABLE work
normally?
Yes
USB_DET(TPS0)
Comes out?
Yes
Is USB signal out
of ICS0-/pin
Yes
Are
DP/DM of
ICS0-8/pin Level = 0.5V
?
Yes
Does the
Clock of ICU0 Work
normally? XU0= MHz
Yes
Does
IC0(MSP) Work
normally?
Yes
Does it
work normally
After having Image Up-
grade?
Yes
Repair is done
No
Replace USB CABLE
No
Check JS0 pin=5V
No
Check BS0
No
Check ICS0-0pin(VCC),
9pin(0V)
No
Check XU0
No
Replac MSP or Main PCB
No
Replac MSP or Main PCB
Samsung Electronics