Flow Chart of Troubleshooting
9-17. PCS Transmitter
TX ON (5Level)
Yes
①
MODULE100 Pin13≥
No
MODULE100 pin8
≥ 25dBm
No
PAM100 pin17
≥ 25dBm
Yes | Resolder |
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| MODULE100,C102,L102 |
Yes |
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| Check MODULE100 | No | ||||
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| pin11 = L (2.6V), |
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| Pin9 = H |
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Yes |
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| Yes | ② | ||
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| Resolder or Change L113,C109, |
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| C110 |
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Check ANT Switch control circuit
Change or Resolder
MODULE100
No
PAM100 pin1
≥
No
U100 pin
C2,B1,B2,A1
≥ 0.2Vp_p
No
Check UCP200
END
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Yes | Check PAM100 pin | Yes |
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| 2,3,5,6,8, +Vbatt |
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| Resolder or Change PAM100 | ||
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| pin4OK? |
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| No |
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| Check VBAT or PAM |
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| control signal |
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| ⑤ | |
Yes | U100 pin G4,F3,D6, | No |
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Check & Resolder | ||||||
| C5,B3,A5,F1 | |||||
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| 29,32,33,36 ≥2.8V |
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| C115,C116,C117,C114 And | |
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| pin C1 ≥2.9V |
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⑥
Yes
Resolder U100
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