LG KG270 Service Manual - Page 49
TX Trouble
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4. TROUBLE SHOOTING 4.2 TX Trouble TEST POINT SW400 U400 X101 FL400 FL401 U102 CHECKING FLOW Setup Test Equipment Cell Power : - 74dBm GSM850 CH190 PCS CH661 Check point DCXO(X101) Check point ULC2(U102)Outp ut Signal Check point PAM(U400) Control Signal Check ASM & Mobile S/W & SAW (FL400,SW400 ,FL401) Re-Download S/W & RF CAL - 50 -
4. TROUBLE SHOOTING
- 50 -
4.2 TX Trouble
U400
SW400
U102
FL400
X101
FL401
Check point
DCXO(X101)
Setup Test Equipment
Cell Power : - 74dBm
GSM850
CH190
PCS CH661
Re-Download S/W & RF
CAL
Check point
ULC2(U102)Outp
ut Signal
Check point
PAM(U400)
Control Signal
Check
ASM & Mobile
S/W & SAW
(FL400,SW400
,FL401)
TEST POINT
CHECKING FLOW