Notes

chiptroniks notes

Understanding complete circuit of led tv panel

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In this tutorial we will discuss complete details of panel driver, MLG , Vcom in complete details . Follow the presentation

V59 universal board for TV

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Chiptroniks specializes in providing solutions for universal boards for TV. we have complete firmware for V59 boards.

download the software 

compatibility chart of notebook io controllers

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Dear all Laptop technicians,

Today i will discuss about compatibility of notebook io controllers. See inside io controller thr is embedded controller. IF that embedded controlller is same in structure , we can go for exchange of io controller. TO know more about it , you have to go to our online laptop repairing training.

Plz find list of notebook io controller compatibility

EC1 Change EC2 Platform
ENE
KB3310QF-A0
KB3310QF-B0 ASUS All-in-One PC ET1602C
KB3310QF-C1
KB3310QF-B0 ASUS EeePC 900
KB3926QF-A1
KB3926QF-A2 Quanta AT3
KB3926QF-C0
KB926QF-D3 HP DV5
KB3926QF-C0
KB3926QF-D2 Quanta OP6, QT6
KB3930QF-A2
KB930QF-A1 Quanta R23
KB926QF-B1
KB926QF-C0 Compal LA-3551P
KB926QF-B1
KB926QF-D3 Compal LA-6552P
KB926QF-D3
KB926QF-C0 Lenovo G550 – Compal LA-5082P
KB926QF-E0
KB926QF-C0 Compal LA-6061P
KB926QF-E0
KB926QF-D3 Compal LA-6311P, Lenovo G555 (LA-5972P)
KB926QF-E0
KB926QF-D2 Compal LA-6421P, LA-6221P
Winbond
WPCE773
WPCE775
WPC8763LDG
WPC8769LDG WistronBiwa, Aspire 5920G – Quanta ZD1
WPC8769LA0DG
WPC8769LDG Alienware M15x – Quanta MX3(Maddog 2.5)
nuvoTon
NPCE781LA0DX
NPCE781BA0DX
NPCE781LA0DX
NPCE783LA0DX Quanta ZQ1
NPCE795GA0DX
NPCE795LA0DX Quanta ZYG
ITE
IT8500E
IT8502E ASUS K50IJ
IT8502E
IT8500E ASUS K40AB, K40C, K50C, K50AB
IT8502E
IT8512E ASUS K50IJ
IT8512E
IT8500E Acer 6920
IT8511TE-BXS
IT8510TE-GXA ASUS X51R/RL
SMSC
MEC1300-NU
MEC1308-NU Samsung R530 (BREMEN-L3, 1.0, BREMEN-L4, r1.4), Samsung R519 (BONN-L)

Communication on notebook motherboard

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When we look at communication on notebook motherboard , i think it embodies the latest communication technology developed till now. If we discuss communication(chip-to chip , chip to device) on notebook motherboard, it can be very easily understood , if we take analogue of computer network . Like in computer network , we have router, modem , LAN cable and computers are connected on LAN each with its own IP . similarly in notebook there are various chips like CPU , north bridge, south bridge, IO controller, BIOS and all need to communicate each other .And each device /chip have its own address and the process of memory address initialization occurs when bios is read at boot time. Where are the lan wires on the notebook ? its thr in form of buses and then we have differenty types of buses and the core type is same PCI or PCI Express . Lets look connection between north bridge(GMCH/MCH) and CPU , we can see DMI(Direct media interface) written on schmeatics , this is a type of PCI in board implementing below ICH5(older boards) and this connection is type of PCI Express(newer boards implementing ICH8 and more) . Now where is the router on notebook .As we know router routes/forwards the address. , similarly memory controller ( memory controller is in GMCH and newer boards In CPU) , so GMCH is the router , it lets CPU to access any components. The CPU doesnt know how many devices are thr and how much ram is thr , it just forwards the address to GMCH , and the magic is that BIOS address is hardcoded , its address has remain unchanged since the evolution of computer and CPU forwards its request at same address in any kind of boards(i3, dual core, core2 duo) . In my coming post i will give insight in more details .

laptop repairing course

laptop repair debug card

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laptop repairing courseMost of the repairing engineer check voltages up to Power on of CPU and the process after CPU get reset signal to the stage where display comes is full of interesting stage. The real magic is how the CPU addresses several North Bridge, South Bridge, BIos rom and system RAM . How does the bios code is run from BIOS Rom by CPU .How is it connected ? and how do we check that the CPU after getting power is ready .There are several signals involved and several addressing mechanism. There is lot of computer architecture involved , but i will simplify things in my coming video. Even though 90% of problems are power related, but if we know this stuff ,we can understand each error message in debug card . So in my coming post i will discuss about memory addressing, Bios rom access, PCI & PCI express connections.

In our laptop repairing training , we put emphasis on complete solution right from hardware to software(power issues, bios issues) .For properly using debug card one must have good knowledge of various bus connections in the laptop.

chiptroniks laptop repairing presentation

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Plz find our presentation on our laptop training. Call us on 011-47592046 to book your training.
Laptop Repairing CHIPTRONIKS

notebook embedded controller (laptop repairing)

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Notebook Embedded Controller Introduction

Today in this article I will discuss a very important topic of Notebook Embedded Controller which is a key element in laptop repairing.

The  position of the BIOS (Basic Input / Output System, basic input output system) in the  entire system is very important  , which implements the underlying hardware and operating system, the upper North  bridge. For Example  for  copying  a file from the CD to the hard drive, we  need to know, “copy and paste” command, we need  not require  exactly how to read from the CD, and then how to write to the hard disk. For the operating system, BIOS also only need to issue commands to, without having to know how to read the disc, a hard disk is how to write. BIOS build the operating system and underlying hardware bridge.
And we usually say the BIOS settings which mean its software settings, such as setting the boot order, disable / enable some features and so on. But there is a problem in the hardware, BIOS is how to achieve it? After all, the software is running on the hardware platform, right? So we must mention Embedded Controller .

ž  EC (Embedded Controller) is a 16-bit microcontroller, which itself has a certain capacity within the Flash to store the EC code. EC’s position in the system, not inferior to north and south bridge, the system is turned on in the process, EC controls the vast majority of important signal timing. In  notebook, EC is always open, whether you are in the boot or shutdown state, unless you completely remove the battery and the Adapter.
In the off state, EC to keep running, and waits for the user’s boot information. In the boot, EC even as a keyboard controller, charging indicator light and fan control equipment, and it even controls the system standby, hibernation state.

The EC now has two architectures,:

(A) that the BIOS FLASH via X-BUS received EC, and EC southbridge through the LPC received, generally this case the EC code is also placed in FLASH , that is, and BIOS share a FLASH.

(B)The right is relatively new architecture, EC and FLASH together received LPC bus, generally only uses EC internal ROM. As for the LPC bus, it was originally intended to replace low INTEL behind the launch of X-BUS bus standard.

For more details on laptop repairing course  , you can contact our chiptroniks

For more Information Join our FaceBook Group : CHIPTRONIKS

Dicitionary of Laptop Chip level Repairing

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COMPONENTS CODE

C : Capacitor
D : DIODE
L : Inductor
PC : POWER Capacitor
PD : POWER Diodes / DIODE
PL : POWER inductor
PQ : POWER TRANSISTOR
PR : POWER RESISTOR
PU : POWER INTEGRATED CIRCUIT
Q : TRANSISTOR
R : RESISTOR
T : Transformers
U : INTEGRATED CIRCUIT
X : Terminal strips , terminations , joins
Y : Crystal ( crystal clock oscylator )

LANGUAGE OF LAPTOP MOTHERBOARD SCHEMATIC

AC           : Alternating current
ACDRV    : AC adapter to system – switch driver output
ACGOOD : Valid adapter detect active-low open – drain logic output
ACN        : Adapter current sense negatif
ACP        :Adapter current sense positif
ACOP      : Input Over – Power Protection
ACOV      : Input Overvoltage Protection
ACP        : Adapter current sense resistor , positive input .
ALWP      : ALWAYS ON POWER
+ B        : AC POWER RAIL OR BAT FOR POWER CIRCUIT
BATT       : BATTERY
BOM        : BILL OF MATERIALS MANAGEMENT
BT           : BUTTON
CHGEN     : Charge active-low enable input logic
CIN         : Input Capacitor
CLK_EN   : CLKOCK ENABLE
CON        : CONECTOR
CRT        : Cathode ray tube
DC          : Direct current
DM          : DIM / DIM SOCKET / SOCKET MEMORY / JACK DDR
DOCK       : DOCKING SOCKET
EMI         : Electromagnetic Interference ( ELECTROMAGNETIC INTERFERENCE )
F             : FUSE
FSEL        : Frequency Select Input .
GND         : Ground
GP           : GROUND PIN
HDMI       : High – Definition Multimedia Interface
ID            : Continuous Drain Current
IDM         : Pulsed Drain Current
IIN           : Operating Supply Current
IIN ( SHDN ) : Shutdown Supply Current
IIN ( STBY ) : Standby Supply Current
IS            : Continuous Source Current ( Diode Conduction )
Ivin          : Battery Supply Current at VIN pin
JP            : JUMPER POINT
LCDV        : LCD POWER
LGATE      : Lower -side MOSFET gate signal
LPC          : Low Pin Count
LVDS        : Low – voltage differential signaling ( SYSTEM PENSIGNALAN )
MBAT       : MAIN BATTERY
ODD         : OUTPUT DISC DRIVE
PCI           : Peripheral Component Interconnect
PGOOD     : Power good open – drain output
PIR           : IMPROVED PRODUCT RECORD
PSI #        : Current input indicator
PVCC        : positive power supply IC
RTC          : REAL TIME CLOCK
TD            : Death Time
THRM        : THERMAL SENSOR
TMDS        : Transition Minimized Differential Signaling ( DATA TRANSMISSIONS teknology )
TP             : TEST POINT
TPAD         : THERMAL PAD
UVLO         : Input undervoltage lock -out
V               : vOLTAGE
+ V            : PWR MORE ( +3 V = MORE THAN 3Volt )
VADJ          : Output voltage regulation
VALW         : ALWAYS ON POWER
VALWP       : VALW PAD
VBAT          : BATTERY POWER
VCCP          : power chip ( ich , graphic chips )
VCORE        : POWER processors ( vCPU )
VDD            : control power supply
VDDR          : POWER DDR ( VDRAM / VRAM / Vmem )
VDS            : DRAIN SOURCE VOLTAGE
VFB            ; feedback inputs Power
VGS            : GATE VOLTAGE SOURCES
VIN             : Input Voltage Range
VIN             : ADAPTER power supply ( vol_in )
VL              : Power Lock
VL              : voltage across the load / resistor load voltage
VLDOIN       : Power supply of the VTT and VTTREF output stage ( to Powermos ) VOT            : Volt_out
VRAM          : Power Random acses memory
VREF           : POWER REFERENCES / SCHEMA REFERENCE / DEMAND SCHEME
VS               : SUITCH POWER/voltage on switch
VS +            : VOLTAGE SUPPORT
VSB             : POWER SWITCH BUTTON
VSS             : Signal ground .
VSW            : POWER SWICT
VUSB           : USB POWER/voltage USB
VVGA           : POWER VGA ( VGPX / VGPU / VCVOD

laptop motherboards huge stock

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CHIPTRONIKS  repairing centre CHIPMENTOR  has huge stock of fully tested motherboards with good quality at affordable prices. Our all laptop motherboards are functionally tested also . For new order , call 011-43464998 or  + 91 9971004998

Acer
Acer 5253
Acer 4315/4715
Acer 5315 GM
Acer 5517 amd
Acer 5570
Acer 5570
Acer 5732Z GM
Acer 5736 965
Acer 5742
Acer 5750G
Acer 5750Z
Acer 6930G GM
Acer D255
Acer D257
Acer E725 DDR3
Acer Extensa 5620
Acer ZG5 MINI
Acer A110/A115

Compaq /HP
Compaq CQ42 AMD 592809-001
Comapq Cq42 I3 GM
Comapq V5000 Intel GM
Compaq CQ42 DDR3
Compaq 6710B
Compaq 6730B Intel GM 486248-001
Compaq C700
Compaq CQ40 intel
Compaq CQ42 I3
Compaq CQ42 with CPU
Compaq Cq60 AMD
Compaq Cq60 Intel
Compaq Cq61 AMD GM
Compaq Cq61 Intel GM
HP 550
HP 2133 MINI 482275-001
HP 540/6520S Intel GM 960
HP 6520s
HP 6530S
HP 6530S Intel intel
HP CQ320/430/620
HP CQ42 I3 inbuilt CPU PM
HP CQ56 C2D Cq42 DDR2 616449-001
HP DM 3 (PM) 581172-001
HP DM3 PM 58066-001
HP DM4 636944-001
HP DV 2 AMD (PM) 573272-001
HP DV 5TI3 (GM) 607605-001
HP DV 7 C2D DV5 TYPE PM 516292-001
HP DV4 C2D GM W/o Graphic
HP DV4 C2D PM With Graphic
HP DV4 i3 CPU PM
HP DV5 AMD GM
Hp Dv50000 with Nvidia
HP DV6 C2D (GM) DV5 TYPE 518433-001
HP DV6 /Dv7 578131-001
HP DV6 AMD
HP DV6 GM
HP DV6000 449903-001/449901-001
HP DV6-2000 i5 590976-001
Hp DV6-3000 603644-001
HP DV6-3000 GM
HP DV6T i3 Inbuilt CPU
HP DV6T-3000
HP DV9000 945
Hp G4/G6 Hm65 GM 636373-001
HP G62 615849-001
HP MINI 1000 (SCALE TYPE) (GM) 516175-001
HP MINI 110 (L TYPE) GM 537662-001
Hp Nx6115 AMD
HP NX6120
Hp Nx6325 AMD
HP NX8220/Nc8230
HP Probook 4320S 599521-001
HP Probook 4420S 599520-001
HP TX2/Tx2500 504466-001

Dell
Dell 1015 DDR2
Dell 1535 GM
Dell 1569 AMD GM
Dell 5030 AMD
Dell D510
Dell D620 W/o
Dell D630 With Grapic
Dell D820 with Nvidia
Dell E1501 AMD
Dell E1505 I6400
Dell E4300 with CPU
Dell E5400
Dell E5500
Dell E6400 w/o
Dell E6400 with grapic
Dell Insp. 1440
Dell M5010 GM
Dell N4010 W/o Grapic
Dell N4010 With grapic
Dell N5010 GM
DELL studio 1450 (PM) With Graphic
Dell Vostro 1200
Dell XPS 1330 with Graphic
Dell XPS 1340
Dell XPS 1640

Sony
Sony MBX-160
Sony MBX-165
Sony MBX-176 One in one PC M/b
Sony MBX-177A GM
Sony MBX-190
Sony MBX-214 GM
Sony MBX-223
Sony MBX-224 M960
Sony MBX-224 M961
Sony mbx-237

Toshiba
Toshiba A300PM Graphic card supported
Toshiba C650 DDR2
Toshiba L510
Toshiba L655 AMD
Toshiba M300D AMD
Toshiba Satillite-A100 GM (915) Green
Toshiba Satillite-L300/L300D AMD

IBM /Lenovo
IBM X201 63Y2064
IBM T40/T41/T42 with ATI
IBM X30
IBM X40 27R1925
IBM X41 39T5519
IBM X60
IBM X61
IBM-T400/R400 42w8125
IBM-T500
IBM-T61 (15.4″) 42w7653
Lenova G530 w/o
Lenova G570 AMD
Lenova Y450 PM
Lenova Y460 PM/Y560 DAKL2FMB8F0
Lenova Z470/Z570 I 3 Intel PM DDR3 DAOKL6MB8GO
Lenovo E43 C2D GM DDR2
Lenovo G470
Lenovo G560 PM

lcd s creen components

Can laptop lcd screen be repaired ?

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Good Evening All , Today in this blog post , i am going to unravel the answer to one baffling question , i have been asked many times by our stuents, our clients and many companies to whom CHIPTRONIKS provides consultancy .

Can LCD Screen be repaired if its not physically broken ? And we gave the answer “yes” . Finally after 1 year of research , CHIPTRONIKS now possess the technology of repairng LCD screens of Laptops/mobiles/LCD television , and we are soon going to lauch a full fledged 10,000 clean room fro repairing lcd screens.

Now let us understand how it works : I will give some glimpse of this , and if any body wants to start LCD screen repairing business, CHIPTRONIKS can offer consultancy in this :

Let us understand first :

Main Components of LCD screen :

•TFT/LCD Glass Substratelcd s creen components
• Polarizer Film
• Gate PCB
• Gate IC Driver
• Source PCB
• Source Driver IC
• Interface Connector (Flex
Cable)
• Backlit Inverter
• CCF Lamp
• Diffuser,Lens Sheet,
• Light guide,Reflector Sheet

Machines Required for LCD Screen Repairing:

1. Bonding Machine
2. Laminator
3.De-Laminator
4.Line Tester
5. LCD Panel Tester
6. Ionising Bar & Blow off Gun
7. Aging Test Chamber
8. Zero Clean Laminate Box
9. Clean Air Booths- Triple Boot
10. IC Driver Rework System
11.Test Tables
12. Color Analyzer
13. Polarizer Film Surface Detector

Concepts to Understand:

1. What is LCd Panel ?
2. What are major LCD Panel defects ?
3. What is cleanroom ?
4. What is an IC driver and its types  ?
5. What is Polarizer film ?
6. Optical measurement of a LCD Panel ?
7. What is ACF ?
8. How to use ACF ?
9. How to test LCD panels ?

What can be repaired? 

LCD Panel repair :
– Polarizer film replacement
– TAB,COG,COF bonding
– Backlight and LED repair
PCB repair
– Gate PCB repair
– Source PCB repair
LCD Display Repair

Main Points :

(a) Polarizer Film Replacement

The replacement of LCD Panel process consist of below stages;
– Disassembly of LCD Panel
– Detaching glass substrate from the panel and metal frame
– Removal of polarizer film (delaminating)
– Cleaning (using special chemicals) of glass substrate to the reapplication of the
new polarizing film
– Replacing polarizer film (laminating)
– Color Analyzer for optical test
• Removal and replacement of polarizing film need to be conducted
under stringent antistatic conditions (clean room environment).
• Panels placed in antistatic plastic bags.

(b)TAB,COF and COG Bonding

• The most common IC mounting methods are TAB,COF and COG.
• IC drivers provide the required current voltage needed to turn power
switching elements on and off.
• Horizontal or Vertical Lines on the screen are common failures caused by
failing driver IC’s and poor bonding to the conductive traces on the glass
substrate.

(C) Bonding Process

The purpose of the bonding is to replace the defect IC driver from
the PCB and the LCD glass substrate.
• IC driver will be demounted from the LCD glass and the PCB.
• Connectors will be cleaned and examined under the microscope.
• LCD Panel will be checked by the ITO tester to find out if there is
an IC driver defect or an ITO line defect.
• If there is an IC driver defect, the IC driver bonding process starts
and new IC driver will be bonded on the LCD glass and PCB
connectors.

(D) BLU

The most common BLU related defects are;
– Diffuser sheet
– CCFL Lamp and LED
– Reflector sheet
– Light guide

 

lcd screen repair process chiptroniks

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