Level 3 Repair
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8-43
8-3-3. No Service
No service
END
Check the
CP_VSD1_1.2V,CP_VSD2_1.8V
CP_VSD1_1.2V (C342) =0.9~1.4V
CP_VSD2_1.8V (C343) = 1.8V
Yes
Replace the UCP300
Yes
Check VREF
VREF (C351) = 600mV
Replace the UCP300
Yes
No
No
Check memu setting
Menu
→
applications
→
setting
→
wireless and network
→
mobile networks
→
network mode
→
setting is auto mode ?
Check the connection of RF coaxial cable
Change the board
PHONE : T311XXXXXXX
PHONE : unknown
Menu
→
Phone
→
Keypad
→
*#1234#
→
check Phone version
→
PHONE : T311XXXXXXX or
PHONE : unknown
Abnormal