Voxtel VS400 free download

File name VOXTEL VS400.pdf

Service Manual Rev. 1.0 Product: VS400 Service Level: Level 1 ~Level 4 Version: 1v0 Author: Customer Service Department CSD Technical Documentation Page1/84 Service Manual Rev. 1.0 1 DOCUMENTATION SCOPE 4 1.1 BRIEF OF VS400 4 1.2 SPECIFICATIONS 4 1.3 BASIC SERVICE 6 1.4 SUPPLEMENTAL SERVICE 6 2 OVERVIEW OF GSM OPERATION 8 2.1 CELLULAR PHONE CONCEPT 8 2.2 GSM-GLOBAL SYSTEM FOR MOBILE COMMUNICATIONS 8 2.3 GSM SYSTEM 9 2.4 SERVICE AREA 11 3 VS400 HARDWARE SPECIFICATIONS 12 3.1 RF SUBSYSTEM 12 3.2 BASE-BAND SUBSYSTEM 14 3.3 BASE-BAND PARTS DETAILS 15 3.4 ACOUSTIC SPECIFICATIONS 27 3.5 CE MARKING 27 3.6 RELATED PERFORMANCE 29 4 CIRCUIT SCHEMATICS 30 4.1 MEMORY CIRCUIT 30 4.2 SIM CARD CIRCUIT 31 4.3 AUDIO CIRCUIT 31 4.4 KEY PAD CIRCUIT 32 4.5 LED CIRCUIT 33 4.6 VIBRATOR CIRCUIT 34 4.7 CHARGER CIRCUIT 34 4.8 LCM CIRCUIT 35 4.9 CAMERA MODULE CIRCUIT 35 4.10 EARPHONE JACK CIRCUIT 36 4.11 FM RADIO CIRCUIT 36 4.12 IRDA REMOTE CONTROL CIRCUIT 37 4.13 MAIN BOARD B2B CONNECTOR CIRCUIT 37 4.14 UPPER BOARD B2B CONNECTOR CIRCUIT 38 4.15 HALL SENSOR CIRCUIT 38 4.16 MINI USB CIRCUIT 38 4.17 RECEIVER CIRCUIT 39 CSD Technical Documentation Page2/84 Service