LG-525 Service Manual

$9.99
LG-525 Service Manual
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LG-525 Service Manual

This manual provides the information necessary to repair, calibration, description and download the features of this model.

FORMAT: High resolution PDF document!
Zip archive: 51 323 kB

1. INTRODUCTION
1.1 Purpose . .......................................................................5
1.2 Regulatory Information . ..................................................5
1. Abbreviation . ...................................................................7

2. PERFORMANC
2.1 H/W Features . ................................................................9
2.2 Technical Specification. . ..................................................11

3. TECHNICAL BRIEF
3.1 Functional Block Diagram . .............................................16
3.2 Digital Main Processor (PMB8810, U101/U401) . ....17
3.3 Power Management . ........................................................22
3.4 FEM with integrated Power Amplifier Module (SKY77547, U01, U02) .....4
3.5 Crystal(26 MHz, X100, X400) . ........................................6
3.6 RF Subsystem of PMB8810 (U101, U401) . ................7
3.7 MEMORY . ........................................................................42
3.8 Bluetooth module . ............................................................48
3.9 Dual SIM Card Interface . .................................................50
3.10 LCD Interface . ...................................................................51
3.11 Battery Charger Interface . ...........................................54
3.12 Keypad Interface . ............................................................55
3.13 Audio Front-End . .............................................................56
3.14 Camera Interface(1.M Fixed Focus Camera) . ......62
3.15 Vibrator Interface . ...........................................................64

4. TROUBLE SHOOTING
4.1 Trouble shooting test setup . .........................................65
4.2 RF Component . ..................................................................66
4. RX Trouble . ...........................................................................68
4.4 TX Trouble . ...........................................................................74
4.5 Power On Trouble . ............................................................80
4.6 Charging Trouble. ..............................................................8
4.7 Vibrator Trouble . ................................................................85
4.8 LCD Trouble . ........................................................................87
4.9 Camera Trouble . .................................................................91
4.10 Speaker Trouble . .............................................................98
4.11 Earphone Trouble . ........................................................100
4.12 Receiver Trouble . ...........................................................10
4.1 Microphone Trouble . .................................................. 106
4.14 SIM Card Interface Trouble . .......................................108
4.15 Micro SD Trouble . ..........................................................110
4.16 WiFi Trouble . ...................................................................112
4.17 FM Radio Trouble . .........................................................116

5. DOWNLOAD

6. BLOCK DIAGRAM

7. CIRCUIT DIAGRAM

8. BGA Pin Map

9. PCB LAYOUT

10. STAND ALONE TEST
10.1 Introduction . ..................................................................149
10.2 Setting Method . ............................................................149
10. Tx Test. . ..............................................................................151
10.4 Rx Test . ............................................................................. 152

11. AUTO CALIBRATION
11.1 Overview. . ............................................................153
11.2 Configuration of HotKimchi . ....................................153
11. Description of Basic File . ..........................................154
11.4 Auto Calibration setup. ............................................155
11.5 Procedure . ............................................................156
11.6 AGC . ...................................................................158
11.7 APC . ...................................................................158
11.8 ADC . ..................................................................158
11.9 Target Power . .......................................................158
12. EXPLODED VIEW & REPLACEMENT PART LIST
12.1 EXPLODED VIEW . ....................................................... 159
12.2 Replacement Parts . ......................................................161
12. Accessory . ....................................................................117



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We are in business since 2002 and do our best to give our customers perfect service!

  Anonymous 2019-10-13 22:41:01  
  Awesome, thank you! Used this for my Epson WF-2630 printer.
  Margaret Scheperle 2013-01-04 01:13:05  
  Sure wish your live support was online. I could understand it being down on New Year's Eve, but not today. I sent an email to this effect also, but no reply. The reset key worked, thanks. For just half a day, however. Not what I expected for $9.99. Please advise.
  Anonymous 2017-12-08 01:22:10  
  thx !! my Epson PX830FWD is alive again greetings from austria
  Colin Jones 2016-12-06 20:42:07  
  Very many thanks for working with me on this order. My printer is reset and I appreciate your patience working with me.
  nyi oo 2012-09-06 17:07:55  
  Hi! I\'m from Myanmar. I need reset key for Epson ME 900WD printer. I have no credit card because credit card is not use in Myanmar now. So please give me a reset key. Please . -============================- You can pay by Western Union
  matt hoffman 2012-01-22 20:45:03  
  Wow, I cannot believe that this actually worked. I had some issues when ordering the reset key, but i contacted the website via email and they immediately got back to me and sent me the key code. ran the program and the printer now works again. I had tryed the reset utility from epsons website, but it didnt work how it was supposed to, it would reset but when you would go to print it would go back to the flashing inkpad needs replaced. I will have to print for a while and see how long this actually works, but for now this has saved this printer from going into the trash. I am glad i stumbled across this program and the website. (used on Epson Artisan 800).
  WILSON ALVARADO 2012-11-28 23:44:16  
  EPSON TX133 KEY PARA RESET DE PRINT URGENTE, PARA ASI PODER TRABAJAR Y BRINDAR SERVICIOS A MIS CLIENTES
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