manualshive.com logo in svg

LG Flatron W2600H, Service Manual

Share
Download
LG Flatron W2600H Service Manual Download Page 18

- 18 -

DESCRIPTION OF BLOCK DIAGRAM

Copyright

2008 LG Electronics. Inc. All right reserved.

Only for training and service purposes

LGE Internal Use Only

1. Video Controller Part.

This part amplifies the level of video signal for the digital conversion and converts from the analog video signal to the
digital video signal using a pixel clock.
The pixel clock for each mode is generated by the PLL.
The range of the pixel clock is from 25MHz to 165MHz.
This part consists of the Scaler, ADC and TMDS receiver .
The Scaler gets the video signal converted analog to digital, interpolates input to 1920 x 1200 resolution signal and
outputs 8-bit R, G, B signal to transmitter.

2. Power Part.

This part consists of the 3.3V and 1.8V regulator to convert power which is provided 5V,
5V in Power board and Micom
5V is provided for LCD panel.(W2600H-PFS)
12V is used for LPL LCD Panel Power.(W2600HP-BNS)

3. MICOM Part.

This part consists of EEPROM IC which stores control data and the Micom.
The Micom distinguishes polarity and frequency of the H/V sync are supplied from signal cable.
The controlled data of each modes is stored in EEPROM.

*refer to the each frequency of crystal oscillators and working frequency.
Video processor : 14.31818MHz.
USB Hub : 30MHz
LVDS Clock Freq. : 154MHz 
MEMORY Clock Freq. : 183MHz

Summary of Contents for Flatron W2600H

Page 1: ...OR SERVICE MANUAL Website http biz LGservice com CAUTION BEFORE SERVICING THE UNIT READ THE SAFETY PRECAUTIONS IN THIS MANUAL CHASSIS NO LM83A MODEL W2600H W2600H PFS A QAF Same model for Service Internal Use Only ...

Page 2: ...ICATION 7 ADJUSTMENT 9 SERVICE OSD 12 TROUBLE SHOOTING 13 BLOCK DIAGRAM 17 EXPLODED VIEW 20 REPLACEMENT PARTS LIST 22 SVC SHEET 25 Copyright 2008 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 3: ...s pencil or pen as this may result in damage to the panel Protect the module from the ESD as it may damage the electronic circuit C MOS Make certain that treatment person s body are grounded through wrist band Do not leave the module in high temperature and in areas of high humidity for a long time The module not be exposed to the direct sunlight Avoid contact with water as it may a short circuit ...

Page 4: ...eat sinks are correctly installed 8 Always connect the test receiver ground lead to the receiver chassis ground before connecting the test receiver positive lead Always remove the test receiver ground lead last 9 Use with this receiver only the test fixtures specified in this service manual CAUTION Do not connect the test fixture ground strap to any heat sink in this receiver Electrostatically Sen...

Page 5: ... by gently prying up on the lead with the soldering iron tip as the solder melts 2 Draw away the melted solder with an anti static suction type solder removal device or with solder braid before removing the IC Replacement 1 Carefully insert the replacement IC in the circuit board 2 Carefully bend each IC lead against the circuit foil pad and solder it 3 Clean the soldered areas with a small wire b...

Page 6: ... and carefully crimp it around the IC pin Solder the IC connection 4 Route the jumper wire along the path of the out away copper pattern and let it overlap the previously scraped end of the good copper pattern Solder the overlapped area and clip off any excess jumper wire At Other Connections Use the following technique to repair the defective copper pattern at connections other than IC Pins This ...

Page 7: ...nc SOG Digital 3 2 Video Input Signal 1 Type R G B Analog 2 Voltage Level 0 0 71 V a Color 0 0 0 Vp p b Color 7 0 0 467Vp p c Color 15 0 0 714Vp p 3 Input Impedance 75Ω 3 3 Operating Frequency Horizontal Analog 30 83kHz Horizontal Digital 30 83kHz Vertical 56 75Hz 4 Max Resolution D sub Analog 1920 x 1200 60Hz Digital 1920 x 1200 60Hz 5 POWER SUPPLY 5 1 Power AC 100 240V 50 60Hz 0 8A 5 2 Power Con...

Page 8: ... 8 TIMING CHART Copyright 2008 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only VIDEO SYNC B C E A D H V Timming ...

Page 9: ...de adjustment Writing initial value of EEPROM in Board Assembly line is adjusting Preset Mode and Reset mode EEPROM is initialized when AC Power is ON first If the change of FOS data is needed after M P it is possible by writing Mode Data with EEPROM write command or modifying the Mode Data in MICOM itself Caution Must keep power on more than 3 seconds after AC Power on first time 3 2 4 Color coor...

Page 10: ... and display status Operate the f engine function and confirm variation of Luminance Make sure to do FACTORY RESET after confirmation of OSD function 3 2 5 6 Confirm the display state by inputting 8 color Bar Pattern 256 Gray Scale pattern 3 2 5 7 DPM operation confirmation Check if Power LED Color and Power Consumption operates as standard Measurement Condition 230V 50Hz Analog Confirm DPM operat...

Page 11: ...etup Windows 2000 XP Need to Port Setup This program is available to LCD Monitor only 1 Port Setup a Copy UserPort sys file to c WINNT system32 drivers folder b Run Userport exe c Remove all default number d Add 300 3FF e Click Start button f Click Exit button 2 EDID Read Write 1 Run WinEDID exe 2 Edit Week of Manufacture Year of Manufacture Serial Number a Input User Info Data b Click Update butt...

Page 12: ...OSD 1 Turn off the power switch at the front side of the display 2 Wait for about 5 seconds and press MENU POWER switch with 1 second interval 3 The SVC OSD menu contains additional menus that the User OSD menu as described below a Auto Color W B balance and Automatically sets the gain and offset value b NVRAM INIT EEPROM initialize 24C08 c CLEAR ETI To initialize using time d AGING Select Aging m...

Page 13: ...orms NO POWER POWER INDICATOR OFF Flash ROM Problem NO NO CHECK POWER BOARD AND FIND OUT A SHORT POINT AS OPENING EACH POWER LINE CHECK U901 3 3V U902 1 8V LINE YES CHECK P305 VOLTAGE PIN9 PIN12 5V IS IC302 PIN2 3 3V IC303 PIN2 1 8V 4 NO CHECK CRYSTAL X200 YES CHECK X200 Frequency NO CHECK IC202 Do ISP Then Recover YES YES 1 P305 9 12 2 IC302 2 3 IC303 2 4 X200 ...

Page 14: ...NOT DISPLAYED NO NO NO REPLACE LCD MODULE CHECK POWER BOARD LIPS CHECK Damaged in Main Board or Check the open or Short point in Main to Power Power to Inverter Cable Main or POWER BOARD LIPS CHECK Power to Inverter Cable 1 24V CHECK Inverter B c 12 BL_ON High CHECK THE LAMP WIRE or Broken Lamp in THE LCD MODULE YES YES YES 1 2 Waveforms 1 Inverter 24V 2 Inverter Lamp Voltage ...

Page 15: ...Internal Use Only 3 NO RASTER OSD IS NOT DISPLAYED MAIN NO RASTER OSD IS NOT DISPLAYED NO NO NO TROUBLE IN LCD MODULE CHECK P303 W2600H Pxx 5V W2600HP Bxx 12V CHECK IC202 CHECK CONNECTION LINE FROM D SUB TO IC202 YES CHECK P303 1 2 CHECK P303 10 11 22 23 CHECK LINK CABLE YES YES 1 Waveforms 1 P303 10 ...

Page 16: ...Only 4 TROUBLE IN DPM TROUBLE IN DPM NO NO NO TROUBLE IN IC202 CHECK PC PC IS GOING TO THE DPM MODE CHECK PC PC IS GOING TO THE DPM MODE CHECK H V SYNC LINE YES If DSUB CHECK R185 AND R187 SYNC APPEARED Is R183 Level is LOW If DVI CHECK R133 CHECK IC202 PIN172 173 SYNC PULSE YES YES 1 2 Waveforms 1 H SYNC 2 V SYNC ...

Page 17: ... 8 V 3 3 V SDA SCL EEPROM 24C16 3 3 V EEPROM EDID Crystal 14 318MHz Analog R G B EEPROM EDID 3 3 V USB 2 0 HUB UPD720114 Crystal 30MHz USB UP D D USB DN x2 DVI D D SUB SDA SCL Digital Video Processor LVDS Panel Interface Micro Control GM5862H LF ITU656 ITU601 HDMI Rx MUX ADC Memory Control SDRAM 4MB M12L16161A DATA Address M U X Regulator MODULE CONTROL ADC D D D D USB DN x2 3 3 V 12 V Use for W26...

Page 18: ...erted analog to digital interpolates input to 1920 x 1200 resolution signal and outputs 8 bit R G B signal to transmitter 2 Power Part This part consists of the 3 3V and 1 8V regulator to convert power which is provided 5V 5V in Power board and Micom 5V is provided for LCD panel W2600H PFS 12V is used for LPL LCD Panel Power W2600HP BNS 3 MICOM Part This part consists of EEPROM IC which stores con...

Page 19: ... for transfer the input AC voltage to a DC voltage through a bridge rectifier and a bulk capacitor 3 Energy Transfer This part function is for transfer the primary energy to secondary through a power transformer 4 Output rectifier and filter This part function is to make a pulse width modulation control and to provide the driver signal to power switch to adjust the duty cycle during different AC i...

Page 20: ... 20 EXPLODED VIEW Copyright 2008 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only 300 540 530 200 440 510 500 520 430 420 410 400 900 920 910 ...

Page 21: ...VR 0 1 u F C100 100 R110 DDC_SCL_DVI 4 7K R102 WP DDC_SDA_DVI KDS184 D105 A2 C A1 5VR 10K R2004 0 1 u F 50V C128 0 1 u F 50V C129 0 1 u F 50V C130 0 1 u F 50V C131 0 1 u F 50V C132 0 1 u F 50V C133 0 1 u F 50V C134 0 1 u F 50V C135 HPD_DVI KCN DS 3 0062 P101 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 4 7K R107 4 7K R103 33 R111 33 R112 33 R108 33 R109 ENKMC2837 T112 D109 A AC C ENKMC2837 T112 D117 A A...

Page 22: ... ITU601_1 GPIO_33 6 ITU601_0 GPIO_32 7 RVDD_33_1 8 DQ7_A 9 DQ6_A 10 DQ5_A 11 DQ4_A 12 DQ3_A 13 DQ2_A 14 CRVSS_2 15 DQ1_A 16 DQ0_A 17 DQ15_A 18 DQ14_A 19 DQ13_A 20 DQ12_A 21 DQ11_A 22 DQ10_A 23 DQ9_A 24 DQ8_A 25 CRVSS_3 26 RVDD_33_2 27 WE 28 CAS 29 RAS 30 CVDD_18_1 31 BA 32 MCLK 33 A9 34 CRVSS_4 35 RVDD_33_3 36 A8 37 A7 38 A6 39 A5 40 A4 41 A3 42 A2 43 A1 44 A0 45 A10 46 RVDD_33_4 47 CRVSS_5 48 DQ7...

Page 23: ...READY R326 KST3906 MTF READY Q301 E B C 10K READY R323 5VR MMBT3904 Q300 E B C TP300 MMBT3904 READY Q303 E B C 0 R300 2 2K READY R332 100uF READY C300 510 READY R319 5VR 220 READY R322 SE 5VR 1 10W 10K R350 10K R367 MMBT3904 Q305 E B C 1K R380 CPT PW_MOD PW_MOD VSEL 2 100 R391 TP540 TXB1 TXB3 TXB0 TXA2 TXB0 TXB1 PW_MOD TXB2 TXB2 TXBC 12507WR 30 P303 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 ...

Page 24: ...READY D505 A AC C OUT3 UPD720114GA 9EU A IC500 1 VDD25OUT 2 VSSREG 3 LED4 4 LED3 5 LED2 6 LED1 7 GREEN 8 AMBER 9 VDD33_1 10 X1 11 X2 12 VDD25_1 13 BUS_B 14 TEST 15 RREF 16 AVSS R 17 AVDD_1 18 AVSS 19 AVDD_2 20 VDD33_2 21 DMU 22 DPU 23 VSS_1 24 VDD25_2 25 DM1 26 DP1 27 VSS_2 28 DM2 29 DP2 30 VDD33_3 31 DM3 32 DP3 33 VDD25_3 34 DM4 35 DP4 36 VSS_3 37 SYSRSTB 38 PPB4 39 CSB4 40 PPB3 41 CSB3 42 VSS_4 ...

Page 25: ...U 5V PAD_KEY2 8 2K R906 B4 KEY2 OUT 1uF C901 PAD_KEY3 A4 4 3K R903 LED AM BM05B SRSS TB P901 1 2 3 4 5 6 A3 PAD_KEY4 LED BU 5V A2 KEY1 PAD_KEY8 5V 4 3K R907 5V A1 9 1K R911 9 1K R912 8 2K R902 ADA04 IC900 1 RBIAS 3 CS5 7 CDEG1 9 CDEG3 10 CDEG4 11 CDEG5 12 CDEG6 13 VSS 14 CDEG7 15 CDEG8 16 RESET 17 OUT1 SDO 18 OUT2 CLK 19 OUT3 EN 20 OUT4 INT 21 SPI 22 OUT5 SDI 23 OUT6 24 OUT7 25 OUT8 26 SLEEP 27 OP...

Page 26: ...LED AM 5 6B ZD801 LED BU 470 R802 LED BU CTL BM05B SRSS TB P800 1 2 3 4 5 6 LED AM LED AM CTL LED BU 5V 5V 5V KEY POWER 4 7K R805 LED AM CTL B Y BL HKBB533B TRB D800 1 2 3 4 LED BU CTL KDS226 D801 READY A AC C 5V 0 1 u F C803 READY 5 6 B ZD802 ADA01 IC801 3 I N 2 ADJ 4 IN 1 VDD 6 OUT 5 GND 1000pF C800 10K R808 AVR M1608C270MTAAB VR1 POWER TC 10K R809 0 1 u F C806 22pF C801 22pF C804 0 R800 33pF 50...

Page 27: ...2 A AC C DN4 USB DOWN STREAM UAR27 4K2300 P103 1 2 3 4 5 KDS226 D100 A AC C DN3 OUT4 USB DOWN STREAM UAR27 4K2300 P104 1 2 3 4 5 0 1uF C102 HH 1M2012 600JT L100 ST5V KEY 1 KEY 2 LED AM LED BU OUT3 DN3 DN3 OUT4 DN4 DN4 KEY 1 KEY 2 LED BU ST5V LED AM 12505WR 15A00 P101 W3000 1 2 3 4 5 6 7 8 9 10 11 12 13 14 16 15 12505WR 06A00 P102 1 2 3 4 5 6 7 100uF 25V C101 100uF 25V C100 FAR285 16G01 P100 W2000 ...

Page 28: ... 32 Copyright 2008 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only PRINTED CIRCUIT BOARD MAIN TOP ...

Page 29: ... 33 Copyright 2008 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only MAIN BOTTOM ...

Page 30: ... 34 Copyright 2008 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only CONTROL TOP CONTROL BOTTOM POWER LED TOP POWER LED BOTTOM USB TOP USB BOTTOM ...

Page 31: ...Jan 2008 P NO MFL42084802 Printed in Korea ...

Reviews:

No comments

Brands by name

Popular brands

Load more brands