Blu Jenny TV Manuel utilisateur

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3

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Service Manual for JENNY TV

CAUTIONS

1.Please read this service manual carefully and make sure all elements of anti-static are in place before the

repair work is carried out.

2. Servicing and alignment MUST be undertaken by qualified personnel only.

3. Please use specified tools and equipments for servicing, in which the parameters need to be calibrated with

specified criteria.

ATTENTION

Boards, which contain Electrostatic Sensitive Device(ESD), art indicated. Following information is

ESD handling:

- Service personnel should ground themselves by using a wrist strap when exchange system

boards.

- When repairs are made to a system board, they should spread the floor with anti-static mat which is also grounded.

- Use a suitable, grounded soldering iron.

- Keep sensitive parts in these protective packages until these are used.

-When returning system boards or parts like EEPROM to the factory, use the protective packages as described

Content

1. Brief Introduction….………………………………………………………………………………….3

2. Exploded View……………………………………………………………………………………….4

3. Tools………………………………………………………………………………………………….5

4. Assemble & Disassemble

Disassembly................…………………………………………………………………………...6-8

Assembly…………………………………………………………………………………………9-11

5. Picture of main board

A&B side of PCBA……………………………………………………………………………….12

A&B of PCBA Layout……………………………………………………………….……………13

6. System Block Chart………………………………………………………………………………...14

7. Unit Circuit Map............................................................................................................................16-21

8. Trouble Shooting Guide……………………………………………………………………………22-27

9. Upgrading & IMEI writing…………………………………………………………………………..28-36

10. CIT testing…………………………………………………………………………………… ……...37

Chapter 1 Specification

Features & Functions

-Dual SIM Dual Standby Single Connection

-Fashion bar phone

-FM

-Multi-Media application

-0.3Mega with SW upgrade 0.3M

-T-Flash

(

Support 8G T Card

)

-

2.4 QVGA240*320

-MP3, MP4, AVI, 3GP

-USB1.1, Mini USB

Specifications:

Network: 850/900/1800/1900MHz

Display: 2.4 QVGA 240*320

Camera: 0.3Mega

Talk time:600 min

Stand-by: 240 hour

Lithium Battery: Standard (900mAh)

USB Data cable: USB 1.1

Customer Service Service Manual

Chapter 3 Tools

Solder iron Hot Air Gun

Power Supply Multimeter Solder wire, Flux

Tweezers Screw

Driver

Cable

Wrist

grounding

strap

Pick Antistatic

gloves

PC, Download cable Others

5

Customer Service Service Manual

Chapter 4 Disassembly & Assembly

1. Disassembly Process

1. Remove the battery cover 2. Unfasten the 4 screws by screw driver

3. Prize up the back cover by pick 4. Stick protection film for LCM.

5. Stick protection film for front cover. 6. Take out the PCBA by pick.

Finished.

6

Customer Service Service Manual

2. Assembly Process

1. Install the PCBA 2. Tear down the LCD protection film.

3. Tear down the protection film. 4. Install the rear cover module.

5. Fasten the 4 screws. 6. Install the back cover.

Finished.

7

Customer Service Service Manual

Chapter 5 Picture of PCBA

5.1 Side A

PCBA (Side A) Location of components

Camera

connector

5.2 Side B

PCBA (Side B) Location of Components

J301

T-flash connector

J201 battery J502、J503

conector SIM connector

LCD

Connector

Side B

U502 RF

PA IC

RF7176

8

Side A Keypad

Connector Mic

U705 BT IC

MT6622

U801 TV

MT5193

U101

CPU

X203

26MHZ

J301 I/O

connector

Customer Service Service Manual

5.3 PCBA Layout side A

5.4 PCB Layout Side B

9

Customer Service Service Manual

Chapter 6 System Block Chart

ATV

NMI601

MT6250

10