Blu DASH 4.0 - Contents; Table of Contents

2013-10-16
Contents
CONTENTS .......................................................................................................................................................................... 3
1. INTRODUCTION ............................................................................................................................................................. 4
1.1 OBJECTIVE ................................................................................................................................................................... 4
1.2 GENERAL SAFETY NOTICE ........................................................................................................................................... 4
1.3 USE INSTRUCTION ........................................................................................................................................................ 4
2. TECHNOLOGY SUMMARIZE ....................................................................................................................................... 5
2.1 DESCRIPTION OF MAIN BOARD COMPONENT MAP ........................................................................................................ 5
2.2 MT6572 CIRCUIT SYSTEM............................................................................................................................................ 6
2.3 BASE BAND CIRCUIT ..................................................................................................................................................... 7
3. TROUBLE SHOOTING .................................................................................................................................................. 9
3.1 FAIL TO STARTUP/POWER ON........................................................................................................................................ 9
3.2 FAIL TO CHARGE ......................................................................................................................................................... 10
3.3 FAIL TO DISPLAY .......................................................................................................................................................... 11
3.4 FAIL TO CALL ............................................................................................................................................................... 12
3.5 SPEAKER NO SOUND .................................................................................................................................................. 13
3.6 EARPHONE FAIL .......................................................................................................................................................... 14
3.7 VIBRATOR FAIL ............................................................................................................................................................ 15
3.8 SIDE KEY FAIL ............................................................................................................................................................. 16
3.9 FAILURE TO IDENTIFY SIM CARD ................................................................................................................................ 17
3.11 CAMERA FAIL ............................................................................................................................................................ 18
3.12 FAILURE TO READ T-FLASH CARD ............................................................................................................................ 19
4. BGA RELATED GND PAD ........................................................................................................................................... 20
4.1 CPU AND MEMORY PIN MAP ....................................................................................................................................... 20
4.2 PMU PIN MAP ............................................................................................................................................................. 21