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SGH-X640 SVC TRAINING H/W RADIO PART

SGH-X640 SVC TRAINING H/W RADIO PART. BYUNGKYU CHA DATE : 2005. 03. 09 PLACE : GUMI, KOREA. CONTENTS. RF BLOCK DIAGRAM FREQUENCY PLAN TRANCEIVER (UAA3536) PART PLACEMENT TROUBLESHOOTING GSM RECEIVER GSM TRANSMITTER DCS RECEIVER DCS TRANSMITTER. BLOCK DIAGRAM. FREQUENCY PLAN.

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SGH-X640 SVC TRAINING H/W RADIO PART

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  1. SGH-X640 SVC TRAININGH/W RADIO PART BYUNGKYU CHA DATE : 2005. 03. 09 PLACE : GUMI, KOREA

  2. CONTENTS • RF BLOCK DIAGRAM • FREQUENCY PLAN • TRANCEIVER (UAA3536) • PART PLACEMENT • TROUBLESHOOTING • GSM RECEIVER • GSM TRANSMITTER • DCS RECEIVER • DCS TRANSMITTER

  3. BLOCK DIAGRAM

  4. FREQUENCY PLAN

  5. TRANCEIVER(UAA3536)

  6. UAA3536 - comment • Signals • POWER ENABLE : RXON, TXON, SYNON, FESWON • TXRFI : input from TX VCO • TXCPO : transmit modulation loop charge-pump output • RFCPO : RF charge-pump output • FESW1, FESW2 : controls external Antenna switch logic

  7. TROBLE SHOOTING –GSM RECEIVER

  8. TROBLE SHOOTING –GSM TRANSMITTER

  9. TROBLE SHOOTING –DCS RECEIVER

  10. TROBLE SHOOTING –DCS TRANSMITTER

  11. QUESTION

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