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Only for training and service purposes
4. TROUBLE SHOOTING
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4.14 Trouble shooting of Transmitter part.
Check point
DCXO
Check point
PLL Control
Setup Test Equipment
Cell Power : - 74dBm
EGSM CH30
DCS CH699
Check point
TX I/Q Signal
Re-Download S/W & RF
CAL
Check point
Transceiver
Check point
PAM Control
Check
FEM & Mobile
SW
➃
➃
➂
➂
➄
➄
➅
➅
➅
➁
➁
➀
➀
Checking Flow
Checking Points
Figure 15. Main PCB
Figure 16. Main PCB