Dcs Transmitter - Samsung SGH-Z720 Service Manual

9-17. DCS Transmitter

TX ON (0 Level)
Yes
VCO100 pin7
≥ 2.5V
No
VCO100 pin5 ≥
2dBm
No
PAM100 pin15
≥ 15dBm
No
U100 pin 22 ≥
20dBm
Yes
Check UCP300(MSM)
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Yes
Cheak PMIC
Yes
Resolder VCO100
Yes
Resolder PAM100
No
Replace U100(ASM)
9-31
Flow Chart of Troubleshooting