Tx / Rx Part Description - LG L1150 Service Manual

4.16. Tx / Rx Part Description

• Regulator ( LDO )
• Produce 2.85V DC Power
• Support DC Power to
– RF Transceiver Chip(U803)
– VCTCXO(X801)
– Triple Buffer(U801)
RF_EN
2.85V DC
Output
• VCTCXO
• Produce RF reference clock
RF main chip
LDO
VBAT_in
26MHz frequency
- 83 -
4. TROUBLE SHOOTING
Vcc = 2.85 V
26 MHz clock output
to RF PLL Chip set