No Service - Samsung GT-N7000 Service Manual

8-3-3. No Service

Check memu setting
Menu → applications → setting → wireless and network →
mobile networks → network mode → setting is auto mode ?
Menu → Phone → Keypad →
*#1234# → check Phone version →
PHONE : N7000XXXX
PHONE : unknown
Check the CP_VSD1,CP_VSD2_1.8V
CP_VSD1 (C350) =0.9~1.4V
CP_VSD2_1.8V (C351) = 1.8V
VREF ( C356 ) = 600mV
Change the board
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No service
Yes
PHONE : unknown
Yes
Check VREF
Abnorma
l
Yes
END
PHONE : N7000XXXX
Check the connection of RF coaxial cable
No
No
8-9
Level 3 Repair
Replace the U300
Replace the U300