Blu DASH C MUSIC, Service Manual

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Contents
INTRODUCTION ....................................................................................................................................... 2
CHAPTER 1 - OVERVIEW .......................................................................................................................... 4
EXPLODED VIEW AND COMPONENT DISPOSAL EXPLODED .................................................................................................... 4
DISASSEMBLY AND ASSEMBLY SERVICE TOOLS ..................................................................................................................... 5
CHAPTER 2 – SYSTEM BLOCK DIAGRAM ................................................................................................... 7
CHAPTER 3 – UNIT CIRCUITRY .................................................................................................................. 8
CPU CIRCUIT ............................................................................................................................................................................ 8
CPU - KEYPAD INPUT ............................................................................................................................................................ 10
SIM 1, SIM 2, T-FLASH JOINT CIRCUIT .................................................................................................................................. 10
EMMC - MCP ........................................................................................................................................................................ 11
BLUETOOTH/WIFI/GPS/FM .................................................................................................................................................. 12
MT6323 CPU POWER SUPPLY PORT ..................................................................................................................................... 14
BATTERY CONNECTOR .......................................................................................................................................................... 16
CHARGER CIRCUIT ................................................................................................................................................................ 16
I/O CONNECTOR (5PIN) ......................................................................................................................................................... 17
RF IC MT6166 ........................................................................................................................................................................ 17
WCDMA RF ........................................................................................................................................................................... 19
AUDIO ................................................................................................................................................................................... 20
LCD INTERFACE ..................................................................................................................................................................... 23
LCD BACKLIGHT .................................................................................................................................................................... 24
CAMERA INTERFACE ............................................................................................................................................................. 24
G-SENSOR ............................................................................................................................................................................. 25
ALS & PS SENSOR ................................................................................................................................................................. 25
TOUCH PANEL ....................................................................................................................................................................... 26
CHAPTER 4 - PCBA ................................................................................................................................. 26
PCB LAYOUT CHART .............................................................................................................................................................. 26
PCB SIDE A ............................................................................................................................................................................ 26
PCB SIDE B ............................................................................................................................................................................. 27
CHAPTER 5 - TROUBLESHOOTING .......................................................................................................... 31
TEST FLOW CHART OF TEST SIM CARD ................................................................................................................................. 31
TEST FLOW CHART NO POWER ON (MAIN) ......................................................................................................................... 32
TEST FLOW CHART HEADPHONES ........................................................................................................................................ 33
TEST FLOW CHART LCD ......................................................................................................................................................... 34
TEST FLOW CHART DOWNLOAD FAILED .............................................................................................................................. 35
CHAPTER 6 – SOFTWARE UPDATE .......................................................................................................... 36
INSTRUCTION OF SW UPDATE .............................................................................................................................................. 36
CHAPTER 7 – FUNCTION TEST ................................................................................................................ 41
FUNCTION TEST .................................................................................................................................................................... 41
CHAPTER 8 – PARAMETER SETTINGS ...................................................................................................... 42