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Samsung SGH-R208 Service Manual

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Contents
  1. Table Of Contents
  2. main parts list
  3. travel adapter
  4. ciger light adapter
  5. test jig
  6. battery charger
  7. main parts list top
  8. main parts list bottom
  9. main rf
  10. rf transmit part
  11. rf receive part
  12. power on
  13. charging part
  14. sim part
  15. microphone part
  16. speaker part
  17. key data input
  18. alert tone
  19. ring indicator
  20. back light
  21. gsm receiver
  22. gsm transmitter
  23. dcs receiver
  24. dcs transmitter
Samsung SGH-R208 Service Manual Manual pdf 28 page image
5. Flow Chart of Troubleshooting and Circuit Diagrams5-1 Power ONFlow Chart of Troubleshooting and Circuit Diagrams 5-1'POWER ON'does not workCharge the BatteryCheck the Battery Voltageis more than 3.2VNoYesYesReplace KeypadWhen the "END" key ispressed, the voltage of "D304 pin1"3.6V?NoYesU474 pin 2,3 > 3.2V Check the circuit related to U474NoENDU619 pin 3 3.0 V ? Check the circuit related to U619NoYesCheck the initial operationU620 pin3 3.0 V ? Check U620 and related circuitNoYesCheck for the clock signal at R107 Check the clock generation circuit(related to U100 and Q100)NoYesYes
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This manual is suitable for:
SGH-R208
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