texet TM-B416 User manual

-
1
-
SERVICE MANUAL
1. Main Functions:
* Call and SMS
* Flash light (torch)
* SOS emergency button
* Alarm clock
* Memo
* Hands-free
* Calculator

-
2
-
Contents
TABLE OF CONTENTS
INTRODUCTION............................................................................ 3
Chapter 1 EXPLODED VIEW AND COMPONENT DISPOSAL
.......................................................................................................... 5
Chapter 2 SYSTEM BLOCK DIAGRAM ................................. 12
Chapter 3 INSTRUCTION OF THE UNIT CIRCUIT ............... 13
Chapter 4 ACTUALL BOARD ................................................... 20
TOP side ...............................................................................................................................20
Bottom side .........................................................................................................................20
Chapter 5 TROUBLE SHOOTING ............................................. 21
Chapter 6 Instruction of SW update ....................................... 27
Chapter 7 FUNCTION TEST ...................................................... 32

- 6
-
Chapter 1 EXPLODED VIEW AND COMPONENT DISPOSAL
EXPLODED

- 7
-
DISASSEMBLY AND ASSEMBLY
SERVICE TOOLS
Iron 850 heater
Oscillograph
Voltage regulator
Multimeter
Constant temperature heater

- 8
-
Software
download cable
Computer and software download cable
Microscope
Solder wire
soldering paste
Wrist
grounding strap
Solder wire, soldering paste
Antistatic gloves
Wrist grounding strap, Antistatic gloves
Screw driver
Plate
SRT-6
Metal tweezers
Infinion series CPU
Metal tweezers, Screw driver, SRT-6 Plates

- 9
-
DISASSEMBLY
Open the batter cover and take out the screw plug remove the screw cover
Take off the screw take off the AD case and volume key
take off the main board and secondary board take off B C case ,FPC and keypad

- 10
-
ASSEMBLY
Assemble the A and D volume
keys to B C case
Fit the 6 screws on the D case and fit
on the two screw plug
Fit the two screws on B case and paste paste the two screw covers
two double faced adhesive tape
Assemble main board and secondary
board to B C case
Assemble B C case ,FPC and keypad

-
11
-
-FINISH-
Chapter 2 SYSTEM BLOCK DIAGRAM
put on the battery cover and clean the
appearance

-
1
-
Chapter 3 INSTRUCTION OF THE UNIT CIRCUIT

-
2
-

-
3
-

-
4
-

-
5
-

-
6
-

-
7
-

-
20
-
Chapter4 ACTUALL BOARD

-
21
-

-
22
-

-
23
-
Chapter5 TROUBLE SHOOTING
NOT POWER ON

-
24
-