No Service - Samsung GT-I9500 Service Manual

Level 3 Repair

8-3-8. 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 : I9500XXXX or
PHONE : unknown
Check the CP V_BAT
L300,L301,L302,C300 = 3.6~4V
Check the CP_VSD1,CP_VSD2_1.8V
CP_VSD1 (C352) =0.9~1.4V
CP_VSD2 (C353) = 1.8V
Change the board
No service
Yes
PHONE : I9500XXXX
PHONE : unknown
Yes
Abnormal
Yes
END
Check the contact of antenna.
(Sub FPCB)
No
Replace the L300,L301,L302,C300
No
8-15
Replace the UCP300