4. TROUBLE SHOOTING
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• Receiver Trouble shooting setup
– Initialize GSM MS test equipment.
– Connect PIF-UNION and power on.
– Make a test call.
– Set audio part at test equipment as PRBS or continuous wave, not echo.
– Set the audio volume max.
• Trouble shooting Procedure
– Check the audio signal levels at each point.
– Check the soldering of the connector.
– Check the soldering of the receiver.
– Check the receiver.
• Speaker Trouble Shooting Setup
– Connect PIF to the phone, and power on.
– Enter the engineering mode, and go to menu “Baseband
→
Alert
→
Ring”
• Trouble Shooting Procedure
– Check the voltage levels of power supplies.
– Check all sound path.
– Check the sound level to the speaker.
– Check the speaker and the soldering.
Check soldering these points !
R208,R250
Check Audio signal here !
RCV_N and RCV_P of U101 chip
Содержание L1150
Страница 1: ...Service Manual Model L1150 Service Manual L1150 P N MMBD0034601 Date June 2004 Issue 1 0 ...
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Страница 18: ...3 H W Circuit Description 17 Figure 1 Receiver Part Block Diagram ...
Страница 42: ...3 H W Circuit Description 41 A BaseBand Components Component Side ...
Страница 43: ...3 H W Circuit Description 42 B BaseBand Components Keypad Side C Digital Baseband DBB Processor ...
Страница 51: ...4 TROUBLE SHOOTING 50 BaseBand Part Troubleshooting 4 1 Baseband Components Component Side 4 TROUBLE SHOOTING ...
Страница 102: ...5 DISASSEMBLY INSTRUCTION 101 5 DISASSEMBLY INSTRUCTION 2 1 1 2 ...
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Страница 113: ...7 BLOCK DIAGRAM 112 Baseband Part 7 BLOCK DIAGRAM The Block Diagram of the Baseband Part ...
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