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Level 3 Repair
8-3-19. PCS1900 RX
NORMAL CONDITION
Catch the channel?
YES
Check F100
Pin#3
-55dBm
YES
Check F100 VBAT
Pin#9
2.5V
YES
Check F100 ENABLE
C142,C143,C144,C145
0V
YES
Check U101
Pin#44,Pin#45
-55 dBm
YES
Check TCXO CLOCK
19.2MHz @ C210
YES
Check U101
YES
END
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NO
NO
RFS100, C112, C116, C103
NO
NO
NO
NO
NO
8-32
Band :PCS1900
CELL POWER : -50dBm
Channel : 698 ! &
check ANT contact
change or re-solder
Change PBA
Change PBA
C133, C134, L110
re-solder or change
OSC100, C210
re-solder or change
U101
re-solder or change
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