CSL BB9300 User manual
- 1 -
SERVICE MANUAL
1. Main Functions:
-Audio Play/Video Recording
-Master /SLAVE GSM 900/1800MHz
-MMS/WAP
-Bluetooth 1.2
2. Main Selling Points
-BT communication
-FM supporting
-GPRS Class 12
-Support MP3, MP4
3. Other Functions
-Slide-Rotating
4. Spec
-SIZE 75X70X15mm
2.4" TFT 26K
- 2 -
INTRODUCTION
The purpose of this document is to help service workshop technicians to service products. This service
TABLE OF CONTENTS
INTRODUCTION………………………………………………………………………………..3
Chapter 1 EXPLODED VIEW AND COMPONENT DISPOSAL………………………….4
EXPLODED DIAGRAM………………………………………………………………………….……...4
DISASSEMBLY AND ASSEMBLY …………………………………………………………….………5
SERVICE TOOLS………………………………………………………………………………...5
DISASSEMBLE…………………………………………………………………………………...7
ASSEMBLY………………………………………………………………………………………..9
Chapter 2 SYSTEM BLOCK DIAGRAM……………………………………………………..11
Chapter 3 INSTRUCTION OF THE UNIT CIRCUIT………………………………………...12
Chapter 4 ACTUALL BOARD…………………………………………………………….….21
SIDE A (MASTER)…………………………………………..……………………………………….….21
SIDE B (SLAVE)……………………………………………………………………………………...….21
Chapter 5 TROUBLESHOOTING……………………………………………………………22
Chapter 6 SOFTWARE INSTRUCTION OF SW UPDATE………………………………..28
SW UPDATE OF MASTER……………………………………………………………..………………32
SW UPDATE OF SLAVE…………………………………………………………………………..……35
Chapter 7 FUNCTION TEST………………………………………………………………….39
Chapter 8 PARAMETER SETTING INSTRUCTION……………………………………….40
Chapter 9 CATCHER INSTRUCTION……………………………………………………….42
- 3 -
manual must be used only by authorized service suppliers. The content of it is confidential. Please note that
provides other guidance documents for service suppliers. Follow these regularly and comply with the given
instructions. While every effort has been made to ensure the accuracy of this document, some errors may
exist. Please keep in mind also that this documentation is continuously being updated and modified, so
always watch out for the newest version.
CAUTIONS
Please refer to the phone’s user’s guide for instructions relating to operation, care, and maintenance,
which include important safety information.
1. Servicing and alignment must be undertaken by qualified personnel only.
2. Ensure all work is carried out at an anti-static workstation and that an anti-static wrist strap is worn.
3. Use only approved components as specified in the parts list.
4. Ensure all components, modules, screws, and insulators are correctly re-fitted after servicing and
alignment
5. Ensure all cables and wires are repositioned correctly
Electrostatic discharge can easily damage the sensitive components of electronic products. Therefore,
every service supplier must observe the precautions which mentioned above.
GENERAL REPAIR INFORMATION
1. Make sure your testing equipment is functioning properly before beginning repair work.
2. Before starting repairs you must observe ESD precautions such as being in your ESD
protected area and connecting your wristband.
3. Use gloves to avoid corrosion and fingerprints.
4. Cover windows and displays with a protective film to avoid dust and scratches.
5. Use a lint-free cloth to clean the LCD.
6. When cleaning the pads use a soft cloth\ESD brush and isopropanol. Do not use a glass
fiber pencil: this scratches the surface and will corrosion.
7. Non-faulty mechanical parts(except shielding lids and bent parts or soldered components).
May be reused if they are not soldered.
8. When removing the shielding lids make sure to replace them with new ones, otherwise the
high-frequency leakage can affect the device.
9. Always use the original spare parts.
10. Check the soldering joints of the parts concerned with regard to the fault symptom. And
resolder them if necessary.
11. Remove excess soldering flux after repair.
12. Observe the torque requirements when assembling the unit.
13. please aware that some malfunctions may be software related and solved by an update
- 4 -
Chapter 1
EXPLODED VIEW AND COMPONENT DISPOSAL
EXPLODED DIAGRAM
- 5 -
DISASSEMBLY AND ASSEMBLY
SERVICE TOOLS
Voltage regulator
Multimeter
Iron
850 heater
Constant temperature heater
Oscillograph
- 6 -
Computer and software download cable
Wrist grounding strap, Antistatic gloves
Wrist
grounding strap
Antistatic gloves
Software
download cable
Microscope
Solder wire, soldering paste
Metal tweezers, Screw driver, SRT-6 Plates
Metal tweezers
SRT-6
Screw driver
MTK series CPU plate
Plate
soldering paste
Solder wire
- 7 -
DISASSEMBLY
Take out the battery cover. Remove 4 screws with screw driver.
Prize up the antenna by pick Prize up SIM buckle
Prize up D cover with pick Remove 2 screws with tweezer
- 8 -
⑺Take down FPC connector with pick ⑻Take off PCBA by tweezer
⑼Take out C cover with hands
⑽Take off 4 screws by tweezer
⑾Prize up B cover with tweezer ⑿Stick LCD film
- 9 -
Finish
⒀stick lens protection film ⒁Take off receiver by tweezer
⒂Separate LCD with pick
⒄separate LCD PCBA with tweezer
⒃Take off the screw with tweezer
⒅Take off FPC
- 10 -
ASSEMBLY
⑴Place LCD PCBA in A cover ⑵Lock the screw
⑹Lock the screws with tweezer⑸install B cover
⑷Install receiver with tweezer
⑶Install LCD
Table of contents
Other CSL Cell Phone manuals
