AOC 786LS Service Manual

SERVICE MANUAL

17" LCD Monitor

786LS

THESE DOCUMENTS ARE FOR REPAIR SERVICE INFORMATION ONLY. EVERY
REASONABLE EFFORT HAS BEEN MADE TO ENSURE THE ACCURACY OF THIS
MANUAL; WE CANNOT GUARANTEE THE ACCURACY OF THIS INFORMATION AFTER
THE DATE OF PUBLICATION AND D ISCLAIMS RE LIABILITY FO R CHANGES, ERRORS
OR OMISSIONS,

MANUFACTURE DATA : Aug 28 2002
REVISE: Mar 17 2003

1

TABLE OF CONTENTS

PAGE

1. SPECIFICATIONS .................................................................................................... 3

1-1 GENERAL SPECIFICATIONS ...................................................….............. 3

1-2 LCD MONITOR DESCRIPTION .................................................................. 3

1-3 INTERFACE CONNECTOR .................................................................……. 3

2. PRECAUTION AND NOTICES ................................................................................ 5

2-1 ASSEMBLY PRECAUTION ......................................................................... 5

2-2 OPERATIONG PRECAUTION ..................................................................... 5

2-3 STORAGE PRECAUTION …........................................................................ 5

2-4 HIGH VOLTAGE WARNING ....................................................................... 5

3. OPERATING INSTRUCTIONS ................................................................................ 6

4. ADJUSTMENT .......................................................................................................... 7

4-1 ADJUSTMENT CONDITIONS AND PRECAUTIONS ............................... 7

4-2 ADJUSTMENTS METHOD .& DESCRIPTION.....................…………….. 7-8

4-3 FRONT PANEL CONTROL KNOBS ............................................................ 9

5. CIRCUIT & SOFTWARE DESCRIPTION .............,…………………………….... 10

5-1 SPECIAL FUNCTION WITH PRESS KEY ………………………………. 10
5-2 CIRCUIT FUNCTION DESCRIPTION………………………….……….. 10-11
5-3 SOFTWARE FLOW CHART……………………………………………… 12

6. A). INTERFACE-BOARD TROUBLE-SHOOTING CHART .......…………..... 14-21

B). INVERTER –MODULE SPEC &TROUBLE SHOOTING CHART………. 22-25

7. MECHANICAL OF CABINET FRONT DIS-ASSEMBLY...................................... 26

8. SVC_BOM LISTING FOR LGE PART NO ………………………………............. 27-28

9. POWER SYSTEM AND CONSUMPTION CURRENT............................................ 29

10. PCB LAYOUT .....................................................................………………………... 30

11. MAINBOARD SCHEMATIC DIAGRAM ….............................….......…......... 31-36

2

1. SPECIFICATIONS FOR LCD MONITOR

1-1 General specifications

1. LCD-Panel :
Active display area 17 inches diagonal
Pixel pitch 0.264 mm x 0.264 mm
Pixel format 1280 x 1024 RGB vertical stripe arrangement

2. Display Color :
6-bit, 16.2 million colors

3. External Controls :
Power On/Off, Menu-key, Auto key, Left key, Right key
OSD menu Controls
Contras , Brightness, Auto Center, Focus, Clock , H/V-position , DOS mode select, R/G/B,
Color-(7200K,6500K), Languages, Reset

4. Input Video Signal :
Analog-signal 0.7Vpp
Video signal termination impedance 75 OHM

5. Scanning Frequencies :
Horizontal: 30 KHz - 83 KHz
Vertical: 55 Hz – 75 Hz
Pixel clock: 135 MHz

6. Factory Preset Timing : 17
User Timings : 13
Input signal tolerance : H tolerance ± 1 K, V tolerance ± 0.5 Hz

7. Input Power Source :
Switching Mode Power Supply
AC 100 – 240 V, 50/60 Hz Universal Type

8. Operating Temperature : 5°C - 40°C Ambient
Non-operating Temperature : 5°C - 40°C

9. Humidity :
Operating : 10% to 85% RH (non-condensing)
Non Operating : 5% to 85%RH (38.7℃ maximum wet bulb temperature)

10. Weight : 7.6 kg

11. External Connection : 15Pin D-type Connector, AC power-Cord

12. View Angle : x-axis right/left = 70, y-axis up/down = 45 ,65

13. Outside dimension : Width x H eight x Thickness = 407x 434 x 173 mm

14. Plug and Play : VESA DDC1/DDC2B

15. Power saving : VESA DPMS

3

LCD MONITOR DESCRIPTION

The LCD MONITOR will contain an main board, an Inverter module, keyboard, External Adapter which house
the flat panel control logic, brightness co ntrol logic, DDC and DC-DC conve rsion
The Inverter module will drive the backlight of panel .
The Adapter will provides the 12V DC-power 4.16 Amp to Main-board,and Inverter module .

Inverter

AC-IN
100v-240v

1-2 Interface Connectors

(A) AC-Power Cable
(B) Video Signal Connectors and Cable
(C) External Adapter

Main Board or Interface Board

ADAPTER

Monitor Block Diagram

CCFT Drive.

Keyboard

Flat Panel and
CCFL backlight

HOST Computer

RS232 Connector
For white balance
adjustment in
factory mode

Video signal, DDC

4

2. PRECAUTIONS AND NOTICES

2-1 ASSEMBLY PRECAUTION

(1) Please do not press or scratch LCD panel surface with anything hard. And do not soil LCD panel surface by

touching with bare hands ( Polarizer film, surface of LCD panel is easy to be flawed)

In the LCD panel, the gap betwee n two glass plates is kept perfectly even to mai ntain display characteristic

and reliability. If this panel is subject to hard pressing, the following occurs :

(a) Uniform color (b) Orientation of liquid crystal becomes disorder
(2) Please wipe out LCD panel surface with absorbent cotton or soft cloth in case of it being soiled.
(3) Please wipe out drops of adhesive like saliva and water in LCD panel surface immediately.

They might damage to cause panel surface variation and color change.

(4) Do not apply any strong mechanical shock to the LCD panel.

2-2 OPERATING PRECAUTIONS

(1) Please be sure to unplug the power cord before remove the back-cover. (be sure the power is turn-off)
(2) Please do not change variable resistance settings in MAIN-BOARD, they are adjusted to the most suitable

value. If they are changed, it might happen LUMINANCE does not satisfy the white balance spec.

(3) P lease consider t hat LCD backlight takes longer time to become stable of radiation characteristic in low

temperature than in room temperature.

(4) Please pay attention to displaying the same pattern for very long-time. Image might stick on LCD.

2-3 STORAGE PRECAUTIONS

(1) When you store LCD for a long time, it is recommended to keep the temperature between 5℃-40℃

without the exposure of sunlight and to keep the humidity less than 85% RH.

(2) Please do not leave the LCD in the environment of high humidity and high temperature such as 60℃

90%RH.

(3) Please do not leave the LCD in the environment of low temperature; below -15 ℃.

2-4 HIGH VOLTAGE WARNING

The high voltage was only generated by INVERTER module, if carelessly contacted the transformer on this
module, can cause a serious shock. (the lamp voltage after stable around 600V, with lamp current around 6.5mA,
and the lamp starting voltage was around 1650V, at Ta=25℃)

5

3. OPERATING INSTRUCTIONS

This procedure gives you instructions for installing and using the LCD monitor display.

1. Position the display on the desired operation and plug–in t he power cord into External Adapter AC outlet.

Three-wire power cord must be shielded and is provided as a safety precaution as it connects the chassis
and cabinet to the electrical conduct ground. If the AC outlet in your location does not have provisions for
the grounded type plug, the installer should attach the proper adapter to ensure a safe ground potential.

2. Connect the 15-pin color display shielded signal cable to your signal system device and lock both screws

on the connector to ensure firm grounding. The connector information is as follow:

1

6

11 15

5

10

15 - Pin Color Display Signal Cable

PIN NO.

DESCRIPTION

PIN NO.

DESCRIPTION

1. RED 9. 5V power from VGA-card

2. GREEN 10. GND

3. BLUE 11. SYNC. GND

4. GND 12. SDA

5. GND 13. HORIZ. SYNC

6. GND-R 14. VERT. SYNC

7. GND-G 15. SCL

8. GND-B

3. Apply power to the display by turning the power switch to the "ON" position and allow about thirty

seconds for Panel warm-up. The Power-On indicator lights when the display is on.

4. With proper signal s feed to the display, a pattern or data should appear on the screen, adjust the brightness

and contrast to the most pleasing display, or press auto-key to get the best picture-quality.

5. This monitor has power saving function follo wing the VESA DPMS. Be sure to connect the signal cable to

the PC.

6. If your LCD monitor requires service, it must be returned with the power cord & Adapter.

6

4. ADJUSTMENT

4-1 ADJUSTMENT CONDITIONS AND PRECAUTIONS

Adjustments should be undertaken only on following function : Contras , Bri ght ness, Black level,

Phase, Clock , H/V-po sition , Languages, Color-(7200,6500,User), Auto level, OSD-position, Languages,
Reset

4-2 ADJUSTMENT METHOD

Press MENU button to activate OSD Menu or make a confirmation on desired function, Press Left/Right button to
select the function or done the adjustment.

1. White-Balance, Luminance adjustment

Approximately 30 minutes should be allowed for w arm up before proceeding white balance
adjustment.

Before started adjust white balance ,please setting the Chroma-7120 MEM. Channel 1 to 7200 color and
MEM. channel 2 to 6500 color, ( our 7200 parameter is x = 302 ±20, y = 319 ±20, Y = 200 ±20cd/m2

and 6500 parameter is x = 313 ±20, y = 329 ±20, Y = 200 ±20 cd/m

How to setting MEM.channel you can reference to chroma 7120 user guide or simple use “ SC” key and
“ NEXT” key to modify x,yY value a nd use “ID” key to modify the TEXT description

2

)

Following is the procedure to do white-balance adjust

Press MENU button during 1 seconds along with plug in the DC-power cord will activate the factory mode,
and the OSD screen will located at

I. Bias (Low luminance) adjustment :

1. Press “ AUTO” button , and wait for message “ Pass”

2. Set the contrast on OSD window to the value=45 , color (user )R,G,B set to “50”

3. adjust the brightness on OSD until chroma 7120 measurement reach the value Y=240 cd/m

cd/m

2

left top of panel.

2

±10

7

II. Gain adjustment :

a. adjust 7200 color-temperature

1. Set the Contrast of OSD function to 45 and Adj ust Brightness to chroma 7120 Y=240 ±5 cd/m

2

2. Switch the chroma-7120 to RGB-mode (with press “MODE” button )

3. Switch the MEM.channel to Channel 01 ( with up or down arrow on chroma 7120 )

4. The lcd-indicator on chroma 7120 will show x = 302 ±10, y = 319 ±10, Y = 200 ±5 cd/m

2

5. Adjust the Color(user)Mode: RED on OSD window, until chroma 7120 indicator reached the value

R=100

6. Adjust the Color(user)Mode: GREEN on OSD window, until chro ma 7120 indicator reached the value

G=100

7. Adjust the Color(user)Mode: BLUE on OSD window, until chroma 7120 indicator reached the value

B=100

8. repeat above procedure ( item 5,6,7) until chroma 7120 RGB value meet the torlence =100±2

9. switch the chroma-7120 to xyY mode With press “MODE” button

10. Press Color (7800) on OSD window to save the adjustment result

b. adjust 6500 color-temperature

1 Set the Contrast of OSD function to 45 and Adjust Brightness to chroma 7120 Y=240 ±5 cd/m

2

2 Switch the chroma-7120 to RGB-mode (with press “MODE” button )
3 switch the MEM.channel to Channel 02 ( with up or down arrow on chroma 7120 )
4 The lcd-indicator on chroma 7120 will show x = 313 ±10, y = 329 ±10, Y = 200 ±5 cd/m

2

5 Adjust the Color(user)Mode: RED on OSD window, until chroma 7120 indicator reached the value

R=100

6 Adjust the Color(user)Mode: GREEN on OSD window, until chroma 7120 indicator reached the

value G=100

7 Adjust the Color(user)Mode: BLUE on OSD window, until chroma 7120 indicator reached the value

B=100

8 repeat above procedure ( item 5,6,7) until chroma 7120 RGB value meet the tolence =100±2
9 switch the chroma-7120 to xyY mode W ith press “MODE” button

10 Press Color(6500) on OSD window to save the adjustment result

Turn the POWER-button off to on to quit from factory mode ( in USER-mode, the OSD window location
was placed at middle of screen)

8

2. Clock adjustment
Set the Chroma at pattern 63 (cross-talk pattern) or WIN98/95 shut-down mode (dot-pattern).
Adjust until the vertical-Stripe-shadow as wide as possib le or no visible.
This function is adjust the PLL divider of ADC to generate an accurate pixel clock
Example : Hsyn = 31.5KHz Pixel freq. = 25.175MHz (from VESA spec)

The Divider number is (N) = (Pixel freq. x 1000)/Hsyn

From this formula, we get the Divider number, if we fill this number in ADC register (divider register), the
PLL of ADC will generate a clock which have same period with above Pixel freq.(25.175MHz) the
accuracy of this clock will effect the size of screen.(this clock was called PIXEL-CLOCK)

3. Focus adjustment
Set the Chroma at pattern 63 (cross talk pattern) or WIN98/95 shut down mode (dot-pattern).
Adjust the horizontal interference as less as possible
This function is adjust the phase shift of PIXEL-CLOCK to acquire the right pixel data .
If the relationship of pixel data and pixel clock not so match, we will see the horizontal interference on
screen ,we only find this phenomena in crosstalk pattern or dot pattern , other pattern the affect is very light

4. H/V-Position adjustment
Set the Chroma to pattern 1 (crosshatch pattern) or WIN98/95 full-white pattern confirm above item 2 & 3
functions (clock & focus) was done well, if that 2 functions failed, the H/V position will be failed too.
Adjust the four edge until all four-edges are visible at the edge of screen.

5. LANGUAGE function
There have 5 language for sel ection, pre ss “MENU” to selected and confirm , press “ LEFT” or “ RIGHT”
to change the kind of language ( English , Deutch , Francais, Espanol, It alian)

6. Reset function
Clear each old status of auto-configuration and re-do auto-configuration ( for all mode)

This function also recall 7200 color-temperature , if the monitor status was in “ Factory-mode” this reset
function will clear Power-on counter ( backlight counter) too.

7. OSD-LOCK function
Press Left & Right key during switching on the monitor, the access to the OSD is locked, user only has
access to “ Contrast, Brightness, Auto-key “.
If the opera tor pressed the Left & Right during switching on the monitor agai n , the OSD is unlocke d.

4-3 FRONT PANEL CONTROL KNOBS

Power button : Press to switch on or switch off the monitor.
Auto button : to perform the automatic adjustment from CLOCK, FOCUS, H/V POSITION, but no affect the

color-temperature
Left/Right button : select function or do an adjustment.
MENU button : to activate the OSD window or to confirm the desired function

9

5. CIRCUIT-DESCRIPTION

5-1 SPECIAL FUNCTION WITH PRESS-KEY

A). press Menu button during 2 seconds al ong with plug-in the DC Power cord:

That operation will set the monitor into “Factory- mode”, in Factory mode we can do the White balance
adjustment with RS232
In Factory mode, OSD-screen will locate in left top of screen.
Press POWER-button off to on once will quit from factory mode and back to user-mode.

B). Press both Left & Right button along with Power button off to on once will activate the OSD-LOCK

function, repeat this procedure will disable OSD-LOCK

In OSD-LOCK function, all OSD function will be lock , except Contrast and Brightness

OSD-INDEX EXPLANATION

1. CABLE NOT CONNECTED: Signal-cable not connected.

2. INPUT NOT SUPPORT:

a. INPUT frequency out of range: H > 83kHz, v > 75Hz or H < 28kHz, v < 55Hz
b. INPUT frequency out of VESA-spec. (out of tolerance too far)

5-2 CIRCUIT FUNCTION DESCRIPTION

USE for computer graphics images to convert analog RGB data to digital data with interpolation process,
zooming, generated the OSD font , perfor m overlay function and generate drive-timing for LCD-PANEL.

Use for calculate frequency, pixel-dot , detect change mode, rs232-communication, power-consumption
control, O S D-index warning , …etc.

EEPROM type, 1K ROM-SIZE, for saving DDC-CONTENT.

EEPROM type, 16K ROM-SIZE, for saving AUTO-config data, White-balance data, and Power-key status
and Backlight-counter data.

7. U905,RT9164(Linear regulator 5V to 2.5V)

8. U600,U601,LVDS ( use NOVATEK NT7181F)

Convert the TT L signal to L VDS signal , the advantage o f LVDS signal is : the wire c an be lengthe n and
eliminate wire number , low EMI .LVDS signal is high frequency but low voltage, only 0.35 VPP ,the
frequency is seven times hi gher than TT L

9. U401, 74F14D(Schmitt triggger)
The 74F14 contains six logic inverters which accept standard TTL input signals and provide standard TTL
Output levels

1. U200,GMZAN2 ( all-in-one chip solution
for ADC, OSD, scalar and interpolation) :

2. U302,89C51RD2 (PHILIPS- MCU, type
8052 series with 64k Rom-size and 512 byte
ram) :

3. U203,24LC21 (MicroChip IC) :

4. U300,24C16 (ATMEL IC) :

5. U304,LM2569S( NS brand switching
regulator 12V to 5V with 3A load current) .

6. U305,AIC 1084-33CM (AIC brand linear
regulator 5V to 3.3V)

10

MODULE-TPYE COMPONENT:

,

n

1. ADAPTER : CONVERSION-module to convert AC 110V-240V to 12VDC, with 4.16 AMP

2. INVERTER : CONVERSION-module to convert DC 12V to High-Voltage around 1650V, with frequency

Input analog RGB &
H,V,& ddc signal &
Rs232 communicatio

DDC-chip

DC 12V 4.16Amp

30K-80Khz, 5.6mA-13mA

GMZAN2 (U200)

Oscillator 50 m hz

MCU ( U302 )

Keyboard module

-

Main-board Block diagram

Data Digital RGB

Panel Contro l Signal:
Phs, Pvs,
PclkA/B

Communication signal:
Hclk,Hfs,Hdata0

Pdispe

Crystal 20 MHz

LVDS chip (U601,
U602)

Panel Power 5V

Panel-Power Control
(U202)

INVERTER module

PANEL

11

5-3 SOFTWARE FLOW CHART

OK

es

es

No

No

I. Power-On Subroutine CHART

POWER-ON START

Initial MCU I/O, Interrupt vector & Ram

Check Eeprom is empty ?

Check White-balance data(6500 & 7200) same with the backup
data ?
Check POC( backlight counter) data same with the backup data ?
IF not same, overwrite the data with backup value.

Check Previous power-switch status from Eeprom, & other system status

Initial GMZAN2

Check if in Factory mode?(when power-on,press the
MENU Button will be in FACTORY mode)

Clear factory mode flag

Y

Initial 1.POC (backlight counter)

2. Clr all mode value

MAIN-SUBROTINE LOOP

Y

SET factory mode flag

12

II. MAIN SUBROTINE LOOP

es

No

No

No

es

es

No

No

been change

No

es

NoYes

Main loop start

Process Power-saving status ( according to below flow-chart result)

Check GMZAN2 IFM status .is change or not.
And check Signal cable status ( cable not connected or not )
** IFM is the register which measured the HSYN & Vsyn status

Check Auto-config mode flag already been set?

Monitoring the time-out of osd status ( if no key input persist for
10 sec , the osd time-out counter will trigger )

Yes, IFM have change

Is current system status in Po wer-sa vi ng ?

Check the IFM result is in the standard
Mode table ?

Check the IFM result is in the user mode
table ?

Out of range ( input not support) be
confirm

confirm the frequency ( Hsyn or Vsyn) from IFM already

been changed ? ( check the change mode flag)

Process ( turn off OSD , setting GMZAN2according to
above parameter, set LED status, set backlight status)

Read Key status and Process on OSD-screen

Check Factory mode flag= 1

)

Y

Wake-up GMZAN2
(because GMZAN2 was in
partial sleeping state)

Y

Set mode index & parameter
Set change mode flag

Y

Yes , freq had

Do Auto-config
automatically

Y

if the RS232 buffer is full,
process the command( while
adjust white-balance in factory
mode)

13

6 A). INTERFACE-BOARD TROUBLE-SHOOTING CHART

No,

es,

ow

p

k

NG,

CU

NG

*Use the PC Win 98 white pattern, with some icon on it, and Change the Resolution to 640x480 60 Hz / 31 KHz
**NOTICE : The free-running freq. of our system is 48 KHz / 60 Hz, so we recommend to use a nother resolution

to do trouble shooting, this trouble shooting is proceed with 640x480 @60Hz 31Khz

I. NO SCREEN APPEAR

DC-Power Part

Measured Input DC-voltage ( J1)= 12 V?
Measured U305 AIC 1084 pin 2 = 3.3V?
Measured U904 LT1117 pin 2= 3.3V?
Measured U905 RT9164 pin 2=2.5v

Check Correspondent component.
Is there any shortage or cold solder?

Disconnected the Signal cable( Loose the
Signal cable ),Is the screen show “Cable Not
Connected” ?

Yes, all DC level exist

Y

there have OSD sh

Connected the Signal cable again,
Check LED status.

nothing is show

Connected the Signal cable again,
Check LED status.

Check the Wire-Harness from CN603
was tight enough?,
check the Wire connection to panel side too

Check Panel-Power Circuit Block

Check U200 Data-output Block

Replace Inverter and Check

Inverter control relative circuit

Re-do White balance adjust

Note: 1. if Replace “MAIN-BOARD” , Please re-do “DDC-content” programmed & “WHITE-Balance”.

OK, U200 data OK

OK

2. if Replace “ INVERTER” only, Please re-do “ WHITE-Balance”

Led Green

OK,Wire tight enough

OK,Panel Power OK

Led Orange

Check Power switch is in Power-on
status , and check if Power switch had
been stuck ?

OK, Keyboard no stuc

Measured RGB (r200,r201,r 202) H, V Input a t U 401

in 9 ,4 ,was there have signal ?

OK,input Normal

OK, Mcu have transition

Replace U200 (Gmzan2)

Led orange

Measured Oscillator Block
Oscillator U201 & Crystal X300

OK,clock normal

Check communication pin between U200 &
MCU pin 2,6,7. , is it have transition?

Replace U302 (MCU)
& check Reset pin 10
must be change from High to
low when first AC power plug­in

OK

no transition

Replace M

Check Correspondent
component short/open
( Protection Diode )
and Signal cable
bad ?

Led Green

14

PANEL-POWER CIRCUIT

f

NG

NG,

OK

)

een

NG

OK,& Re

NG,no transition

OK,

NG,no transition

NG , no

on

NG

NG

check R225 should have response from 0V to 5V
When we switch the power switch from on to of

Measured the U202 pin 5,6,7,8= 5 V?

OK

OK,R225 have response

INVERTER Control Relative Circuit

Measured the inveter connector CN303
Pin 1,2=12V, pin 3 on/off control=5V (on

Replace INVERTER to new-one, and
Check the screen is normal ? ?

YES, still no scr

-do white balance

OSCILLATOR BLOCK

Measured U201 Oscillator output R215= 50MhZ ?

has transition

Measured X300 Crystal output R340= 20MhZ ?

OK

U200-DATA OUTPUT

Measured PCLK(L207,R603)
PVS,PHS,PDISPE (pin 73,74,43 from U200 )
Is there have any transition?
Pclk around 47MHz to 57MHZ ,
PVS=60.09Hz , PHS around 67 KHz ??(refer to
input signal=640x480@60 Hz 31k, and LED is
green)

OK

no Voltage

Check the PPWR panel power relative circuit,
R223,R224, Q200,U202(pin 5,6,7,8)
In normal operation, when LED =green, R223
should =0 v,
If PPWR no-response when the power switch
Turn on and turn o ff, replace t he U200-GMZAN2

Check U202 pin 1,3= 5V

Replace U202 ( Nmos, SI9953)

Check U304 relative circuit.(D300,L906..)
Check JP202 shortage

Check the Bklt-On relative circuit, R315, Q304, R311,
In normal operation, when LED =green,
R315 Bklt-On should =0 v,
If Bklt-On no-response when the power switch turn on-off,

Replace the MCU

Replace Oscillator U201

Replace Crystal X300

transiti

Replace GMZAN2 (U200) or replace
MAINBOARD.

If Main Board being replace , please
do the DDC – content reprogrammed

15

II (a) THE SCREEN is Abnormal , stuck at white screen, OSD window can’t appear, but

N

p

NG,

keyboard & LED was normal operation.

At general, this symptom is cause by missing panel data or panel power, so we must check our
wire-harness which connected to panel or the panel power controller (U202)

Check if the Wire harness from CN603 loose?
Check the wire on both Panel-side and Main board side.

Tighten it.

Yes, tight enough

Check the Panel-Power circuit as above (page 16)
U202 pin 5,6,7,8 ,must be 5V

Yes, Voltage normal

Check the LVDS-Power L601,L602,L603,L604,L900= 3.3V ?

Yes, Voltage normal

Check the both U601 & U602 LVDS-Input pin 31= 45mhz –
65mhz, and pin 27 = Vsyn freq, pin 28 = 45khz- 65 khz

Yes, Frequency normal

Replace both LVDS chip ( U601 & U602)

Check U904,which convert the 5V to

3.3V

Check U200 DATA-OUPUT block as
above ( page 16)

G, no data output

Check OSCILLATOR Block as
above ( page 16)

OK, all clock is normal

Replace U302 MCU and check it RESET
pin 10 ,must be turn high to low when first
AC

ower-on

OK, reset is normal

Check U200 DATA-OUTPUT block again

still no data out

Replace U200 GMZAN2

16

II. (b)The screen had the Vertical Straight Line, might be stuck in Red, Green, Blue

OK

OK

OK

N

NG

N

NG

OK

NG

NG

,

r

OK

OK, no keep

on

That symptom is cause by bad Panel issue ( might be the Source IC from Panel is cold solder or

open loop ) so REPLACE THE PANEL TO NEW ONE.

KEYBOARD BLOCK check

Check U302 MCU pin 43,42,41,40,39 at
High state(5V)? without press any key

G

Mechanical was stuck, Check !

Press power key and check U302 pin 43
= low (0V) ?

Check U302 pin 38 (LED green) will have
transition from hi to low or low to hi when we
press the power key??

Check U302 pin 20= 20MHz ? and pin 44
(VDD)=5V ? and pin 10 (reset)=0V ? at normal
condition

Without press key and change mode, Check U302
pin 16,17(sda,scl)= hi 5V ? or keep transition ?

Replace U302 MCU

G, MCU no response

transiti

Check main board R303 shortage?
Replace Tact-switch SW105 at keyboard if still
no work replace U302 MCU at main-board and
check MCU relative reset circuit, and crystal

If still no Led green indicator, check Q102,
R106 & LED at keyboard !! cold solder or bad

If one of this item was NG, check the relative
circuit

Keep transition, that means eeprom no response

Check U300 eeprom 24LC16 relative circuit,
check U300 pin 7 = low?

Check JP302 is
connect ?

Check U300 pin 8
(vdd)= 5V, and check
R300

R301 cold solde

Replace eeprom

17

OK

OK

N

p

NGN

POWER-BLOCK check
**Note : the Waveform of U304 pin 2 can determined the power situation

1. stable rectangle waveform with equal duty, freq around 150K-158KHz
that means all power of this interface board is in normal operation
,and all status of 5V & 3.3V is working well

2. unstable or uneven rectangle waveform without same duty, that means ABNORMAL operation was
happened, check 3.3V or 5V ,if short-circuit or bad component

3. rectangle waveform with large spike & harmonic pulse on front side , means all 3.3v is no load, U200
Gmzan2 was shut-down, and only U302 MCU still working , that means the monitor is in po wer saving
status , all power system is working well .

Measure input power at U304 LM2596 pin 1=
12V ?

Check ADAPTER and connector if loose?

Check U304 pin 2 is a stable rectangle wave?
Around 150k-158kHz stable rectangle wave
with equal duty without any spike or harmonic
pulse?

The interface board power is good

G

Check U304 pin 2 is a unstable rectangle wave ?

OK, unstable wave

Check all 3.3V & 5V power, there is
short circuit or bad component was
happened

G, with

harmonic

ulse

The interface board is in power­saving state, pre ss power key to wake
up & check your signal input

18

OK

OK

NG,

ces s

st

NG

N

NO,

ode

III.ALL SCREEN HAS INTERFERENCES OR NOISE, CAN’T BE FIXED BY AUTO KEY

** NOTE: There is so many kind of interferences, 1). One is cause by some VGA-CARD that not meet VESA spec or

power grounding too bad that influence our circuit

2).other is cause by external interferences, move the monitor far from electronic equipment.( rarely
happened)

Use DOT-pattern, or win98/99 shut-down
mode pattern, press “AUTO” key, was the
interferences disappear ??

Adjust “FOCUS” step by step, until the
horizontal interferences disappear

Does your signal-cable have an additional
cable for extension ??

Does your noise only exist in one mode only?
(ex: only at 1280x1024 @ 75 Hz, other is normal)

That was cause by you VGA-CARD setting, your VGA
card timing back porch / front porch exceed vesa timing
too far, for some new AGP-VGA-CARD such situation
always happened
So in your control-panel icon ,select monitor ,setting ,

advance ,screen-adjust ,at
Size icon, increase step by step slowly, press “”AUTO”

key every step you increase the SIZE . repeat the
procedure( increase/decrease SIZE one-step and press
AUTO) until the interferences disappear, press “APPLY”
to save in your VGA

interferen

O additional extension cable

Yes, only happened on one mode

till exi

Yes, has extension

END

END

Put away the additional cable
May be the additional cable grounding is
not quite well

all m

Change the Signal-cable to new-one or
Try other brand VGA-CARD
(make sure just only that brand VGA­CARD has this problem ,contact RD-
Taipei)

19

NG

OK

OK

There is interferences in DOS MODE

NOTE :the criteria of doing AUTO-CONFIGURATION : must be a full-size screen, if the screen not full , the auto­configuration will fail. So in dos mode ,just set your “CLOCK” in OSD-MENU to zero or use some EDITOR
software which can full fill the whole screen (ex: PE2, HE) and then press “AUTO”
Or you can use “DOS1.EXE” which attached in your Driver disk to optimize DOS mode performance

V. THE PANEL LUMINANCE WAS DOWN

Use white pattern and resolution 1280x1024 @ 60Hz , CHROMA 7120 measured the center of panel

Set Contrast, brightness =maximal, RGB= 50
Quit from OSD-screen, measured Y(luminance)
With chroma 7120, check Y= 240±10 cd/m2 ?

If Y can reach ＞240 cd/m2 that means
The lamp still working well, so we just re-do the

white-balance process
As following procedure

If the Y less than 200 cd/m2 (after the contrast,
brightness = max) then change the LAMP of panel

Use white-pattern, press MENU button along
with AC power-plug in ( you will in factory
mode) The OSD-menu will be at left-top of
screen,

press AUTO button to automatically adjust black
level value, you will see the sign PASS

Follow White-Balance, Luminance adjustment
as above ( page 8),method to more detail procedure
For do a white-balance adjust

20

6 B). INVERTER –MODULE SPEC &TROUBLE SHOOTING CHART

For 786LS model , use Hydis panel, and the INVERTER is made by SAMPO

SAMPO Parts No: DIVTL0085-D42 AOC Parts No.: 79LL17-3-S

I. CONNECTOR PIN ASSIGMENT:

A) CON1: INPUT

MODEL NO.: S5B-PH-SM3-TB

PIN SYMBOL DESCRIPTION

1 Vin Input voltage: 12V
2 Vin Input voltage: 12V
3 ON/OFF ON: 3V OFF:0V
4 Dimming Dimming range (0V~+5.0V)
5 GND GND

B) CON2,CON3,CON4,CON5: OUTPUT

MODEL NO.: SM02B-BHSS-1-TB

PIN SYMBOL DESCRIPTION

1 HV OUTPUT Input H.V to lamps
2 RETURN Return to control

C) FUNCTION SPECIFICATIONS:

The data test with the set of SAMPO

DC TO DC CONVERTER

(ROOM TEMPERATURE 25℃ ±4℃)

ITEM SYMBOL MIN. TYP. MAX. UNIT REMARK

Input voltage Vin 10.8 12 13.2 V
Input current Iin -- 2100 2500 mA
output current
adj:0v( min.)

Output current
adj.:5 v(max.)

Frequency

Iout

(min)

Iout

(max)

F 40 50 60 KHZ

2.3

5.5

2.6

6.0

3.3

6.5

mA

mA

FOR 1 CCFL
LOAD:120KΩ
FOR 1 CCFL
LOAD:120KΩ

H.V open Vopen 1550 1700 1850 Vrms NO LOAD
H.V Load Vload 600 700 800 Vrms

RL=120KΩ

21

D) FUNCTION TEST CIRCUIT:

1

1

120KΩ

1

2

10Ω

VT-181

2

120KΩ

CON2

CON3

CON4

CON5

1
2

CON1

2

120KΩ

10Ω

VT

1 2 3 4 5

120KΩ

10Ω

VT-181

10Ω

VT

22

II. TROUBLE SHOOTING BLOCK DIAGRAM

A) NO POWER:

CHECKED ON FUSE
F1 Vin=12

FAIL

TO CHANGED
F1= 4.0A/63V

TO CHECKED Q4 & Q6

PASS

PASS

FUNCTION TEST OK !

VOUT = 9V

TO CHECKED L1/L2
INPUT 9V TO L1 OR L2

FAIL

FAIL

PASS

TO CHANGED
CH1: Q7/Q8/D12/PT1
CH2: Q9/Q10/C13/PT2

TO CHANGED
CH1: Q4/Q3/Q11
CH2: Q5/Q6/Q12

B) HIGHT VOLTAGE PROTECTION:

1. SHORT R30 & OPEN LOAD

FAIL

2. TEST PT1 OR PT2 OUTPUT PIN 7 H.V

VOLTAGE Vh=1600 ±100V rms

PASS

TO CHANGE ON PT1
OR PT2

FUNCTION TEST OK!

23

C) OUTPUT CURRENT ABNORMALITY:

CHECK PWM FREQUNCY AT C6

FAIL

CHIP
THE OSCILLATOR FREQUNCY
RANGE = 150 ~ 250 KHZ

PASS

D) ENBALE ABNORMALITY:

IF ENABLE ABNORMALITY

1. TO CHECK IC PIN 9 TURN ON HAVE

FAIL

12 VOLTAGES

TO CHANGE C6 CHIP OR IC
CHIP

FUNCTION TEST OK!

TO CHANGE ON Q1
& Q2

PASS

E) DIMMING CONTROL ABNORMALITY:

IF DIMMING ABNORMALITY TO
CHECK R1/R2/R33/C6 IS FAILD?

PASS

FAIL

FUNCTION TEST OK!

TO CHANGE ON
R1/R2/R33/C6R203

FUNCTION TEST OK!

24

F) TRANSFORMER ABNORMALITY:

IF TRANSFORMER ABNORMELITY TO CHECK
C3 & C4 CHIP OUTLINE OR TRANSFORMER

PASS

G) INSTRUMENTS FOR TEST:

1. DC POWER SUPPLY GPS-3030D

2. AC VTVM VT:-181E

3. DIGITAL MULTIMERTER MODEL-34401

4. HIGHTVOLT PROB MODEL-1137A

5. SCOPE MODEL-V-6545

FAIL

TO CHANGE C3 & C4 OR
TRANSFORMER

FUNCTION TEST OK!

25

7. MECHANICAL OF CABINET FRONT DIS-ASSEMBLY

26

8 SVC_BOM LISTING FOR LGE PART NO

786LS SVC BOM

No. LG Part No. Desc. AOC Part No. Desc. Q'TY

1 3911TKK425B Main Board Ass'y

2 3911TKK425C Control Board Ass'y

3 3911TKK425E Power Board Ass'y

4

3911TKK425D

5

3911TKK425F

6 3911TKK426A Front Bezel 705l782KF34-01 Bezel Assy 1

34L1001-AAL-4B Bezel 1
33L4530-AL-L Key 1
33L4531-1 ORNAMENT 1

7 3911TKK426B Back Cover 705L782KB34008 Back Assy 1

34L916-AM-2B Back Cover 1
15L5791-1 Kensington Metal 1
33L4532-AAM-L LG Logo 1

CBPC782KKGLM Main Board Ass'y 1
( = Conversion Board )
KEPC782KA3 Key Board Ass'y 1

DCPC780A7 Power Board Ass'y 1

Adapter Ass'y

Inverter

ADPC12416AL LCD Adapter Ass'y 1

79LL17-3-S Inverter 1

Q1L1030-12-128 4

8 3911TKK426C Stand 705L782KB34008 Stand Assy 1

34L919-AM-B Stand 1
15L5711-1 Plate 1
Q1L1030-10-47 Screw 2
12L381-1 Foot Pad 4
37L448-1 Hinge 1
33L4345-AM-L Dust Cover (PE) 1

Dust Cover ( Stand

34L918-AM-B
34L917-AM-B Dust Cover (Front) 1
Q1L140-10-47 Screw 6

3911TKK426E Hinge Cover 33L4344-AM-1/2L

9

3911TKK426F Hinge Cover 33L4344-AM-1/3L

10

Power Cord Korea 1
Power Cord 89L401A18NISA Japan 1
Power Cord 89L404A18N YH Europe 1
Power Cord 89L404A18N YH Russia 1
Power Cord 89L410A18N IS UK 1
Power Cord 89L402A18N YH USA 1

11 3911TKK425G Signal Cable 89L 174L17-10D 786LS Signal cable 1

3911TKK426D 33L4345 Signal Duster cover 1

12 Fuse NA 1
13

Carton Box 44L3265-689-1A Europe/UK/USA 1
Carton Box 44L3265-689-2A Russia 1

Carton Box
Carton Box

44L3265-689-3A

Back) 1

Hinge Dust Cover
(Back)(L) 1
Hinge Dust Cover
(Back)® 1

Korea
Janpan

1
1

27

LCD PANEL HT17E11-

14 3911TKK425A LCD Panel 750LLK70-300

95L 900

15 3911TKK425H J1

16 3911TKK425J

17 3911TKK425K CN302 33L3802 9H Connector (Key) 1
18 3911TKK425L Cn303 33L3802 5H Connector (Inverter) 1

19

P980
CN603 33L801724A H

Screw

31(Harness) Connector (Power) 1
95L8018-30­5(harness) 1

Screw Assy

M1L330-6-128 Screw 10
M1L1030-10-128 Screw 4
M1L1740-12-128 Screw 4
Q1L340-12-128 Screw 8
Q1L340-16-47 Screw 4

Q1L1030-10-128 Screw 3

300 1

Connector (Panel)

1

28

9. POWER SYSTEM AND CONSUMPTION CURRENT

(

(

(

)

ADAPTER MODULE
Input AC 110V, 60Hz/240V, 50Hz
Output DC 12V 5A

Main board power system

LM2596S-5, 12V to 5V (5A SPEC)

INVERTER MODULE
Input DC 12V
Output AC 1500V/30K-80KHz
Current 14mA

5V

AIC1084
5V to 3.3V

5A SPEC)

3.3V

for GMZAN2
consumption

To CPU, Eeprom, 24c21, control-inverter-on.off
860mA when Cable not Connected
841mA when Normal operation
To Hyundai-300 Panel around 1450mA

RT9164
5V to 2.5V

800mA SPEC

3.3V2.5V

for GMZAN2
consumption

for LVDS consumption

LT1117
5V to 3.3V

800mAspec)

29

CU

Input
Connector

AIC1084
5V to 3.3v

DDC chip

10. PCB LAYOUT

MAIN PCB LAYOUT

RT9164
5V to 2.5v

Gmzan2

LVDS power ( LT1117)

5V to 3.3v

LVDS

Inverter-connector

Keyboard-connector

LM2596 convert 12V to 5V

Panel­Power
Control

Audio-connector

M

30

11. SCHEMATIC DIAGRAM

.G

ock

ock

ower block

TOP-LEVEL FLOW

+5V

P

+12V

INPUT

VGA_SDA

SDA

VCC

24LC21A
EEPROM

POWER

12V

AIC1084-3.3V
RT9164-2.5V

LM2596-5.0V

R

G

B

H-SYNC

V-SYNC

/VGA_CON

RXD
TXD

VGA_SCL

SCL

+3.3V
+2.5V

+5V

+3.3V
+2.5V
+5.0V

mzan2 bl

+5V

VCC

MFB1

HDATA0

/VGA_CON
RXD
TXD

MICRO CONTROLLER Winbond

MCU

MFB7

MFB2

+3.3V

RED

GREEN

BLUE

HSYNC/CS
VSYNC LVDSEN

HDATA0
MFB1
MFB2
MFB7
MFB8
MFB9

TCLK1

IRQ

IRQ

MFB8

MFB9

TCLK1

CRYSTAL1 20MHZ

+2.5V

LVDS bl

ZAN2SCALER

ERED

+3.3V

+2.5V

EGRN

EBLU

PDISPE

PVS
PHS

PCLK

LVDS1

ERED[0-7]
EGRN[0-7]
EBLU[0-7]
DENABLE

PVS
PHS
TXCLKIN

/PWRDWN

NT7181

+3.3V

VCC
TX0-/+E
TX1-/+E
TX2-/+E
TX3-/+E

TXC-/+E

+3.3V

LVDS2

ORED
OGRN

OBLU

TCLK

RST

HCLK

HFS

HFS

RST1

RST

RST1

HCLK

SDA

SCL

XTAL1

XTAL2

X1

X2

+5V

OUT

VCC

CRYSTAL2 50MHZ

+5V

SDA

VCC

SCL

EEPROM1 24C16

ORED[0-7]

VCC

OGRN[0-7]

TX0-/+O

OBLU[0-7]

TX1-/+O

DENABLE

TX2-/+O

PVS

TX3-/+O

PHS

TXC-/+O

TXCLKIN
/PWRDWN

NT7181

Title

Size Document Number Rev

B

Monday, July 29, 2002

Date: Sheet

+5V

PANEL(HYUNDAI-300)

VCC

TX0-/+E
TX1-/+E
TX2-/+E
TX3-/+E

TXC-/+E

TX0-/+O
TX1-/+O
TX2-/+O
TX3-/+O

TXC-/+O

SIEMENS 43B1-M

BLOCK DIAGRAM

715L820-2-2

11

of

A

31

GMZAN2 Block

/VGA_CON

ADC-AGND

CN200

1
2
3
4
5

BLUE

6
7

/VGA_CON1

8

VGA_HSYNC

9

VGA_VSYNC

10
11

VGA_SDA

12
13
14

HEADER 14

ADC-AGND

RXD

RXD

TXD

TXD

+5V

VGA_5V

2

A

C618

0.1 uF

GND

C

1

C619

0.1 uF

Connect two grounds at single point only.

ADC-AGND

C943
100uF

24LC21A

GND

2
3

GND

VGA_SCL

D303

BAT54

NC
NC
NC

VGA_5V

84

SDA
VCCGND

VCLK

PLL_GNDA

LVDS EN

L207

1 2

0

+D5V

R326
10 K

C314
22 uF

C620
10uF

GND

+3.3V

L200

12

600(1206)

C200
100uF

L201

12

600(1206)

C203
100uF

L202

12

600(1206)

C237

0.1 uF

PGND

GND

PCLKA
PHS

PD[0..47]

PCLKB

R602

0

PCLKA

R603

0(OP)

PCLKB

D302
1N4148

A C

GND

C942

0.1 uF

GND

R223

1

10 K

PCLKAADC GNDA
PHS

PD[0..47]

PCLKB

R229

0

C957
1000PF

R224
10K

R225
10K

3

Q200
MMBT3904

2

Title

Size Document Number Rev

C

Monday, July 29, 2002

Date: Sheet

C202

C201

0.1 uF

0.1 uF

PGND

C204

C205

0.1 uF

0.1 uF

PGND

U201

1 4

SB VCC

3

2

OUT

GND

50 MHz

PVS
PDISPE

RST1

R229:
Let Zan1 been
reseted twice!

+D5V

4

G2

D2

5

C245

0.1 uF
C246

0.1 uF

GND

SIEMENS 43B1-M

ZAN2

715L820-2-2

DVDDA

SVDDA

GND

JP202

123

S1G1S2

D1D1D2

876

PANEL_P

0

U202
SI9933ADY

R215

C250

C214
100uF

PGND

bead 120

33 pF

PVS
PDISPE

JP203

R (OP)

14

C215

0.1 uF

of

RVDDA

TCLK

+12V

PANEL_P

A

+D5V

123

4

RP300

GND

10 K

876

5

VDDA

VSYNC

C236
100 pF(OP)

C235
100 pF(OP)

99
105
104
102

103
101

98

107
106

124
123
109
110
111
112
113

95

C229

10 nF

94

C232

10 nF

91

C230

10 nF

90

C233

10 nF

87

C231

10 nF

86

C234

10 nF

148

150

2
3
4

83

97
130
135
142
145
152
153

+2.5V

PCLKB

C262

+5V

R327

C251
10nF

ADC-AGND

C948 1000PF
C949 1000PF

R220

100

R217

10 K

DDC_SDA

D209

5.6V

R218

100

+2.5V

10 K

D210

5.6 V

A C

ADC-AGND

+5V

A C

AC

GND

L205

1 2

0

R219
100

R216

DDC_SCL

10 K

D208

5.6V

+3.3V

+3.3V

R227

100

C244

0.1 uF

GND

U203

5
6

SCL

7

C(OP)

GND

ADC-AGND

+5V

R210
2 K

R214
1 K

+5V

+D5V

R209

C405

2 K

0.1UF

R213
1 K

+3.3V

C206
100uF

R230
0(OP)

+A2.5V

C216
22uF

L203

600(1206)

ADC-AGND

C207

0.1 uF

C213

0.1 uF

12

C224
100uF

ADC-AGND

D203

1N4148

D206

1N4148

D207

1N4148

11 10

D201

A C

5.6 V

ADC-AGND

1 2

D200

A C

5.6 V

C208

0.1 uF

C217

0.1 uF

C225

0.1 uF

VDDA

D202
1N4148

A C

A C

VDDA

A C

A C

U401E

74LVT14_ADC

+D5V

U401A

74LVT14_ADC

C209

0.1 uF

GND

C218

0.1 uF

ADC GNDA

HDATA0

MFB7
MFB8
MFB9

HCLK

IRQ

HFS

MFB2

VDDA

D204
1N4148

A C

D205
1N4148

A C

ADC-AGND

ADC-AGND

R212

100 (op)

R211 100(op)

C210

0.1 uF

C219

0.1 uF

GND

C226

0.1 uF

R316 0(OP)
R317 0

GND

R206

75

ADC-AGND

R205

75

ADC-AGND

R204

75

ADC-AGND

U401D

9 8

74LVT14_ADC

ADC-AGND

U401B

3 4

74LVT14_ADC

ADC-AGND

C211

0.1 uF

C220

0.1 uF

C227

0.1 uF

R200 100

R203 0

R201 100

R207 0

R202 100

R208 0

C228

0.1 uF

C212

0.1 uF

C221

0.1 uF

C956
1000pF

U200

HDATA
MFB7
MFB8
MFB9

HCLK
IRQ
HFS

MFB5
MFB6

MFB10
MFB11
MFB4
MFB3
MFB2
MFB1
MFB0

RED+

RED-

GREEN+

GREEN-

BLUE+

BLUE-

VSYNC

HSYNC/CS

Reserved
PSCAN
Reserved

Reserved
NC
Reserved
Reserved
XTAL(Reserved)
Reserved
Reserved
STI_TM1

ZAN2

L204

1 2

0

+3.3V

R221

0

33

4058657779

108

60

RVDD1

RVDD2

RVDD3

RVDD2B

RVDD2A

CVSS1A

CVSS1

18183041496172114

5

R232

0

+3.3V

R231
0(OP)

+B2.5V

RVDD3A

RVSS1

SRVSS1

RVSS2

GND

ADC_VDD2

CVSS2

+B2.5V

GND

+A2.5V

VDDA

111221

125

139

149

84889296128

SVDD

DVDD

CVDD2

SRVDD1

SRVDD2

SYN_VDD

ADC_VDD1

RVSS3

RVSS4

CVSS3

CVSS4

DVSS

126

140

C222

0.1 uF

ADC_VDDA

ADC_BVDDA

ADC_GVDDA

ADC_RVDDA

ADC_GND2

ADC_GND1

SUB_GNDA

ADC_GNDA

CVSS2A

SVSS

SYN_VSS

SRVSS2

151

158

78

80

59

147

C223

0.1 uF

ADC_BGNDA

CVSS5

8182858993

R234
0

R233
0

ADC-AGND

+D5V

C929
100uF

SVDDA

DVDDA

129

PLL_DVDDA

DAC_DVDDA

ADC_GGNDA

ADC_RGNDA

U905
RT9164

3

IN

C947

0.1uF

RVDDA

143

136

137

141

TCLK

PLL_SVDDA

PLL_RVDDA

DAC_SVDDA

PLL_DGNDA

SUB_DGNDA

SUB_SGNDA

PLL_SGNDA

DAC_DGNDA

DAC_SGNDA

131

132

133

134

127

138

PGND

2

OUT

ADJ

1

GND

TCLK

6

PD47

PD47

7

PD46

PD46

PD45

9

PD45

PD44

10

PD44

PD43

13

PD43

PD42

14

PD42

PD41

15

PD41

PD40

16

PD40

PD39

17

PD39

PD38

19

PD38

PD37

20

PD37

PD36

22

PD36

PD35

23

PD35

PD34

24

PD34

PD33

25

PD33

PD32

26

PD32

27

PD31

PD31

PD30

28

PD30

PD29

29

PD29

PD28

31

PD28

PD27

32

PD27

PD26

34

PD26

PD25

35

PD25

PD24

36

PD24

PD23

37

PD23

PD22

38

PD22

PD21

39

PD21

PD20

42

PD20

PD19

46

PD19

47

PD18

PD18

PD17

48

PD17

PD16

50

PD16

51

PD15

PD15

52

PD14

PD14

53

PD13

PD13

54

PD12

PD12

PD11

55

PD11

56

PD10

PD10

57

PD9

PD9

PD8

62

PD8

63

PD7

PD7

PD6

64

PD6

PD5

66

PD5

PD4

67

PD4

PD3

68

PD3

PD2

69

PD2

PD1

70

PD1

PD0

71

PD0

73

PVS

PVS

74

PHS

PHS

75

LVDS EN

PBIAS

76

PPWR

PPWR

43

PDISPE

PDISPE

CLK

44

PCLKA

45

PCLKB

117

OSD_CLK

116

OSD_VREF

115

OSD_HREF

120

OSD_DATA2

119

OSD_DATA1

118

OSD_DATA0

122

OSD_FSW

121

OSD_DATA3

100

RESETn

154

STI_TM2

155

SCAN_IN1

156

Reserved

157

SCAN_IN2

159

SCAN_OUT1
SCAN_OUT2

PLL_RGNDA

SUB_RGNDA

144

146

+2.5V

C930

C946

0.1uF

100uF

GND

160

PPWR

PD[0..5]

PD[6..11]

PD[12..17]

ADC GNDA

PD[18..23]

PD[24..29]

PD[30..35]

LVDS Block

PD36
PD37

PD38
PD39

PD40
PD41

PCLKA

ADC GNDA

PHS

PVS

PDISPE
PCLKB

PD42
PD43

PD44
PD45

PD46
PD47

ADC-AGND

PD36
PD37
PD0
PD1
PD2
PD3
PD4
PD5

PD38
PD39
PD6
PD7
PD8
PD9
PD10
PD11

PD40

PD41
PD12
PD13

PD14
PD15
PD16
PD17

PD42
PD43
PD18
PD19
PD20
PD21
PD22
PD23

PD44
PD45
PD24
PD25
PD26
PD27
PD28
PD29

PD46
PD47
PD30
PD31
PD32
PD33
PD34
PD35

GND

R605

AVDD_3.3

C602

1

1

91726

V

V

91726

V

V

V

V

C601

0.1uF

PWRDWN

TXOUT0-

TXOUT0+

TXOUT1-

TXOUT1+

TXOUT2-

TXOUT2+

TXOUT3-

TXOUT3+

TXCLKOUT-

TXCLKOUT+

LVDSVCC
LVDSGND

LVDSGND
LVDSGND

PLLVCC
PLLGND

PLLGND

C604

0.1uF

GND

PWRDWN

TXOUT0-

TXOUT0+

TXOUT1-

TXOUT1+

TXOUT2-

TXOUT2+

TXOUT3-

TXOUT3+

TXCLKOUT-

TXCLKOUT+

LVDSVCC
LVDSGND

LVDSGND
LVDSGND

PLLVCC
PLLGND

PLLGND

EDGE

GND
GND
GND
GND
GND

EDGE

GND
GND
GND
GND
GND

0.1uF

AVDD_3.3

EVEN

U601
NT7181

TSSOP56

51

TXIN0

52

TXIN1

54

TXIN2

55

TXIN3

56

TXIN4

3

TXIN6

50

TXIN27

2

TXIN5

4

TXIN7

6

TXIN8

7

TXIN9

11

TXIN12

12

TXIN13

14

TXIN14

8

TXIN10

10

TXIN11

15

TXIN15

19

TXIN18

20

TXIN19

22

TXIN20

23

TXIN21

24

TXIN22

16

TXIN16

18

TXIN17

25

TXIN23

27

TXIN24

28

TXIN25

30

TXIN26

31

TXCLKIN

GND

R

GND

51
52
54
55
56

50

11
12
14

10
15

19
20
22
23
24
16
18

25
27
28
30

31

3
2
4

6
7

8

U602
NT7181

TSSOP56

TXIN0
TXIN1
TXIN2
TXIN3
TXIN4
TXIN6
TXIN27
TXIN5

TXIN7
TXIN8
TXIN9
TXIN12
TXIN13
TXIN14
TXIN10
TXIN11

TXIN15
TXIN18
TXIN19
TXIN20
TXIN21
TXIN22
TXIN16
TXIN17

TXIN23
TXIN24
TXIN25
TXIN26

TXCLKIN

ODD

+

C603
100uF

GND

32

TX0-E

48

TX0+E

47
46

TX1-E
TX1+E

45
42

TX2-E

41

TX2+E
TX3-E

38

TX3+E

37

TXCK-E

40

TXCK+E

39

44
49

C605
10uF

43

16V

36
34
35

C607
10uF

33

16V

53
29
21
13
5

GND

32

TX0-O

48
47

TX0+O

46

TX1-O

45

TX1+O

42

TX2-O

41

TX2+O

38

TX3-O

37

TX3+O

TXCK-O

40

TXO10

39

44

C613

49

10uF

43

16V

36
34
35

C615
10uF

33

16V

53
29
21
13
5

GND

TXE0
TXE1
TXE2
TXE3
TXE4
TXE5
TXE6
TXE7

TXE8
TXE9

GND

AVDD_3.3

HEADER 12X2

OUT

ADJ

1

CN603

2

TXE1

12

TXE3

34

TXE5

56

TXE9

78

TXE7

910

TXO1

1112

TXO3

1314

TXO5

1516

TXO10

1718

TXO7

1920
2122
2324

GND

C928
330uF

AVDD_3.3

C940

0.1uF

L900

(600)

+

C606

0.01UF

+

C608

0.01UF

TXO0
TXO1
TXO2
TXO3
TXO4
TXO5
TXO6
TXO7

TXO8

+

C614

0.01UF

+

C616

0.01UF

GND

L601
BEAD (120)

L602
BEAD (120)

L603
BEAD (120)

L604
BEAD (120)

PANEL_P

LVDS EN

AVDD_3.3

+D5V

C927
330uF

C939

0.1uF

TXE0

TXE2
TXE4
TXE8
TXE6
TXO0
TXO2
TXO4
TXO8
TXO6

U904
LT1117

3

IN

GND

SIEMENS 43B1-M

Title

Size Document Number Rev
Custom

Monday, July 29, 2002

Date: Sheet of

LVDS

715A820-2-2

66

B

MCU Block

+5V

+5V

+5V

GND

SDA

SCL

C313
22 uF

R313
10 K

+5V

R300
10 K

A C

D301
1N4148

RST

R301
10 K

+A5V

5

6

U300

SI

SCK

24LC04B

BKLT-PWM
VOL

C316
22 uF

VCC

WP

A0
A1
A2

VSS

8

7
1
2
3
4

GND

SDA
SCL

HDATA0

MFB7
MFB8
MFB9

HCLK

HFS

R302
10 K

RXD
TXD
IRQ

MFB2

RST1

/VGA_CON

C303
33 pF

GND

C300

0.1 uF

GND

+5V

RST

X300

20MHz

C306
33 pF

R333

2 K

R340

0

R341
TEST(OP)

PS3

GND

JP303

R(OP)

JP302

0

2
3
4
5
6
7
8
9

10

11
13
14
15
16
17
18
19

20

21

U302

T2/P1.0
T2EX/P1.1
P1.2
P1.3
P1.4
P1.5
P1.6
P1.7

RST

RXD/P3.0
TXD/P3.1
INT0/P3.2
INT1/P3.3
TO/P3.4
T1/P3.5
WR/P3.6
RD/P3.7

XTAL2

XTAL1

GND

22

/BKLT-ON

8XC51/PLCC

P2.0/A8

P2.1/A9
P2.2/A10
P2.3/A11
P2.4/A12
P2.5/A13
P2.6/A14
P2.7/A15

ALE/PROG

P0.7/AD7
P0.6/AD6
P0.5/AD5
P0.4/AD4
P0.3/AD3
P0.2/AD2
P0.1/AD1
P0.0/AD0

EA/VP

NCNCNC

11223

R315

10 K

PSEN

VCC

NC

34

MMBT3904

R431

10 K(OP)

R238 0

(Panel-Select)* ?

24
25
26
27
28
29
30
31

32
33

36
37
38
39
40
41
42
43

+A5V
44
35

C305

100uF

+5V

R311
10 K

Q304

1

2 3

GND

VR501

/BKLT-ON

KEY1(ORANGE?)
KEY2(GREEN?)

+5V

C304

0.1 uF

C944

0.1 uF

+5V

W

10 K(OP)

GND

PS3

PW5V-ON

4.7K Ohm

C403

GND

BKLT ADJ

RP301

R303

4.7K

100uF

R401

0

R321
0 (OP)

18
27
36
45

+12V

GND

2

GND

R323
0 (OP)

1

8



3

27

6

CN303

1
2
3
4
5

HEADER 5

C401
22uF

GND

R325
0 (OP)

4

5

R402

620

K/E Select

GND

CP301
1000 pF

+5V

1
2

R403

1K

R319

1
2

1

27

8

BKLT-PWM

KEY

3

6

+5V

R329

R328

10 K

10 K

4

CP302
1000 pF

5

GND

GND

VOL
MUTE

STDBY

Title

Size Document Number Rev

B

Date: Sheet

Monday, July 29, 2002

R237 0

R236 10 K(OP)

CN302

1
2
3
4
5
6
7
8
9

HEADER 9

MUTE

STDBY

+12V

R239

4.7K(OP)

C954 1000PF

C955 1000PF

GND

+5V

1

Q201

C951
1000PF

R235

4.7K(OP)

2 3

MMBT3904(OP)

GND

GND

CN304

1
2
3
4
5
6

HEADER 6

MUTE
STDBY

SIEMENS 43B1-M

MICRO CONTROLLER

715L820-2-2

+12V

C953

1000PF

GND

B

36

of

J1

+12V POWER

GND F

FB301

2 1
4
6 5

INDUCTOR-P

+12V

3

C307
330 uF/35V

C308

0.1 uF

U304
LM2596S-5.0 / Si8050

1

TO263

VIN

/ON

543

GND

FBK

Vout

2

D300
B320

T300

33 uH(OP)
L906

1 2

CHOKE

+5V

C309
330 uF/35V

C941

0.1 uF

POWER Block

PW5V-ON

R307

4.7K

GND

(OP)

+5V

L905

1 2

CHOKE

+12V

R306

10K

3

Q202

1

MMBT3904

2

GND

+5V

R305

4.7K

1
2
3
4

U306

S1
S2
S3
G

4431

C945
470uF/16V

GND

D1
D1
D2
D2

+A5V

+5V

+D5V

8
7
6
5

R310

0

+D5V

JP301

GND

C310

330 uF/35V

3
2
1

U305 AIC 1084

C311

0.1 uF

+A5V

C952

GND

VoutVin

GND

1

GND

1000PF

23

+3.3V

GND

L300

1 2

(600)

GND

C950

1000PF

+3.3V

C312
330 uF/35V

SIEMENS 43B1-M

Title

Size Document Number Rev

A

Date: Sheet of

Monday, July 29, 2002

POWER

715L820-2-2

A

56

3