Now downloading free:Ericsson TechDes
Ericsson TechDes free download
Cell phone, GSM, Satellite phone - Nokia, Siemens, Samsung mobiles service manuals and repair information| File information: | |
| File name: | TechDes.pdf [preview TechDes] |
| Size: | 465 kB |
| Extension: | |
| Mfg: | Ericsson |
| Model: | TechDes 🔎 |
| Original: | TechDes 🔎 |
| Descr: | . Rare and Ancient Equipment Ericsson Mobile Phones ERICSSON EF738 TechDes.pdf |
| Group: | Electronics > GSM Mobile Phones |
| Uploaded: | 28-02-2022 |
| User: | Anonymous |
| Multipart: | No multipart |
| Information about the files in archive: | ||
| Decompress result: | OK | |
| Extracted files: | 1 | |
File name TechDes.pdf Technical Description Ericsson Mobile Phone EF738 Technical Description 2 Technical Description Contents Overview __________________________________________ 7 Basic Building Blocks ______________________________________ 8 Transceiver Block Diagram _________________________________ 9 PCB ____________________________________________________ 10 Mechanical Design __________________________________11 Man Machine Interface (MMI)_______________________ 12 Keypad _________________________________________________ 12 Display _________________________________________________ 12 Acoustic Signals __________________________________________ 12 Top LED Indicator _______________________________________ 12 Radio Design ______________________________________ 13 General Overview ________________________________________ 13 Antenna Connector ___________________________________________ 13 Antenna Filters ______________________________________________ 13 Receiver Part________________________________________________ 14 Receiver Front End ________________________________________ 14 IF Part __________________________________________________ 14 Receiver Back-End ________________________________________ 15 Synthesizer _________________________________________________ 16 Programming _____________________________________________ 16 Power___________________________________________________ 16 Lock Detect ______________________________________________ 16 VCTCXO __________________________________________________ 17 Transmitter _________________________________________________ 18 TX Blocks _______________________________________________ 18 MALIN ____________________________________________________ 19 TX-IF VCO ______________________________________________ 19 TX Mixer ________________________________________________ 19 TX Modulation ___________________________________________ 19 TX-IF Frequency Control ___________________________________ 19 Programmable Prescaler ____________________________________ 19 Power and Charging Design _________________________ 20 Regulators ______________________________________________ 20 Reset ___________________________________________________ 21 On/Off Control __________________________________________ 21 Charging Circuitry _______________________________________ 21 Transient/ESD Protection__________________________________ 22 Off Current Draw ________________________________________ 22 User Interface _____________________________________ 23 Illumination _____________________________________________ 23 Buzzer ________________ | ||
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