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SAMSUNG Proprietary-Contents may change without notice
Flow Chart of Troubleshooting
10-
11
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10-2-3. DCS1800 & PCS1900 TX
C122
= 3.7V?
NO
YES
PAM100 Pin#12
About 2~3 dBm?
PAM100
Pin#4, #5
High?
UCD300,C120,C125
Check / Change
NO
RFS100, L101,
C102, L102,
C109, L104
Check / Change
YES
PAM100
Check & Change
YES
Check the
Battery Block
PAM101
Pin #8
1.2V?
Check UCD300 TXP
YES
YES
NO
NO
NO
UCD101 Check
Pin#13
≥
2.8V ?
UCD101 Check
Pin #31 : 26MHz ?
Vpp : 1.2V?
YES
NO
NO
YES
C131, UCD300
Check or resolder
UCD101
PIN #7
ANY SIGNAL?
YES
Change PAM100
PAM100
Pin#1
4~5dBm ?
R101, C123
Check & Resolder
OSC100
Check & resolder
UCD101
Check & resolder
NO
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