AOC LM2028 Schematic
AOC LM2028
英华家电维修资料专用 QQ:505966338
SERVICE MANUAL
AOC LM2028
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 OFTHIS INFORMATION AFTER THE DATE OF
PUBLICATION AND DISCLAIMS RELIABILITY FOR CHANGES, ERRORS OR OMISSIONS.
Page 1 of 66
AOC LM2028
英华家电维修资料专用 QQ:505966338
Table of Contents
1. MONITOR SPECIFICATIONS .........................................................................................................................................4
2. LCD MONITOR DESCRIPTION ......................................................................................................................................4
3. OPERATING INSTRUCTIONS ........................................................................................................................................5
3.1
GENERAL INSTRUCTIONS......................................................................................................................................5
3.2
ADJUSTING THE PICTURE ......................................................................................................................................5
4. INPUT/OUTPUT SPECFICATION ...................................................................................................................................7
4.1
INPUT SIGNAL CONNECTOR ..................................................................................................................................7
4.2
FACTO RY PRESET DISPLAY MODES：..................................................................................................................8
4.3
PANEL SPECIFICATION ...........................................................................................................................................9
4.3.1 PANEL FEATURE...............................................................................................................................................9
4.3.2 DISPLAYS CHARACTERISTICS .......................................................................................................................9
4.3.3 OPTICAL CHARACTERISTICS.......................................................................................................................10
4.3.4 PARAMETER GUIDE LINE FOR CFL INVERTER. .........................................................................................10
5. BLOCK DIAGRAM ........................................................................................................................................................ 11
5.1
SOFTWARE FLOW CHART ....................................................................................................................................11
5.2
ELECTRICAL BLOCK DIAGRAM ............................................................................................................................13
5.2.1 SCALAR BOARD BLOCK DIAGRAM ..............................................................................................................13
5.3.2 INVERTER/POWER BOARD BLOCK DIAGRAM............................................................................................14
6.SCHEMATIC ...................................................................................................................................................................16
6.1
MAIN BOARD...........................................................................................................................................................16
6.2
POWER BOARD......................................................................................................................................................22
7. PCB LAYOUT ................................................................................................................................................................26
7.1
MAIN BOARD...........................................................................................................................................................26
7.2
KEYPAD BOARD .....................................................................................................................................................26
7.3
POWER BOARD......................................................................................................................................................27
8. MAINTAINABILITY........................................................................................................................................................28
8.1
EQUIREMENT AND TOOLS REQUIREMENT ........................................................................................................28
8.2
TROUBLE SHOOTING ............................................................................................................................................29
8.2.1 Main board........................................................................................................................................................29
8.2.2 KEYPAD BOARD .............................................................................................................................................32
8.2.3 POWER/INVERTER BOARD...........................................................................................................................32
8.2.3 POWER/INVERTER BOARD...........................................................................................................................33
9. WHITE- BALANCE, LUMINANCE ADJUSTMENT ......................................................................................................35
10. EDID CONTENT ..........................................................................................................................................................36
11 BOM LIST .....................................................................................................................................................................37
Page 2 of 66
AOC LM2028
英华家电维修资料专用 QQ:505966338
Revision List
Version Release Date Revision History TPV Model
A00 Jun-29-2005 Initial Release TA92KAUHBAAON
A01 Nov-07-2006 Add TPV Model in item 11 TA92KAUDBAA1NP
Page 3 of 66
AOC LM2028
(
英华家电维修资料专用 QQ:505966338
1. MONITOR SPECIFICATIONS
z 510 mm (20.1”) a-si TFT Active matrix LCD panel, 0.255 mm dot pitch.
z Microprocessor controlled scan technology
z 19 factory modes, 19 new modes
z Vertical refresh rate 55Hz to 75 Hz
z Horizontal frequency 30kHz to 80kHz
z Resolutions: 640 x 480 up to 1600 x 1200 @ 60Hz
z Universal power supply designed for worldwide application
z CE mark
z TCO99 mark
z VESA DPMS compliant
z VESA DDC2B compliant
2. LCD MONITOR DESCRIPTION
The LCD MONITOR will contain a main board, an inverter/power board, a keypad board which houses the flat panel
control logic, brightness control logic and DDC.
The power board will provide AC to DC Inverter voltage to drive the backlight of panel and the main board chips each
voltage.
Monitor Block Diagram
CCFL Drive.
Flat Panel and
CCFL backlight
Power board
Include: inverter，adapter)
Main Board
Keyboard
RS232 Connector
For white balance
adjustment in factory
mode
AC-IN
100V-240V
HOST Computer
Video signal, DDC
Page 4 of 66
AOC LM2028
英华家电维修资料专用 QQ:505966338
3. OPERATING INSTRUCTIONS
3.1 GENERAL INSTRUCTIONS
Press the power button to turn the monitor on or off. The other control buttons are located at front panel of the
monitor. By changing these settings, the picture can be adjusted to your personal preferences.
The power cord should be connected.
-
Connect the video cable from the monitor to the video card.
-
Press the power button to turn on the monitor, the power indicator will light up.
-
3.2 ADJUSTING THE PICTURE
The description for control function:
Main Menu
Item
Luminance
Image Setup
Image
Position
Main Menu
Sub Menu Item
Icon
Contrast
Brightness
Focus
Clock
H. Position
V. Position
Sub Menu
Icon
Adjust
Description
Range
Contrast from Digital-register. 0-100
Backlight Adjustment 0-100
Adjust Picture Phase to reduce
0-100 Do Auto Config
Horizontal-Line noise
Adjust picture Clock to reduce
0-100 Do Auto Config
Vertical-Line noise.
Adjust the horizontal position of
0-100 Do Auto Config
the picture.
Adjust the vertical position of the
0-100 Do Auto Config
picture.
Reset Value
Recall Cool Contrast
Value
Recall Cool
Brightness Value
Color Temp.
Warm N/A
Cool N/A
User / Red
User / Green
Recall Warm Color Temperature
Page 5 of 66
from EEPROM.
N/A
Recall Cool Color Temperature
N/A
from EEPROM.
Red Gain from Digital-register. 0-100
Green Gain Digital-register. 0-100
The Color
Temperature will be
set to Cool.
The User R/G/B
value(default is 70)
will not be Modified
by Reset function in
AOC LM2028
英华家电维修资料专用 QQ:505966338
Auto Config
OSD Setup
User / Blue
H. Position
V. Position
OSD Timeout
Blue Gain from Digital-register. 0-100
Yes
N/A
No N/A
Adjust the horizontal position of
Adjust the vertical position of the
English N/A
Auto Adjust the H/V Position,
Focus and Clock of picture.
Do not execute Auto Config,
return to main menu.
0-100
the OSD.
0-100
OSD.
Adjust the OSD timeout. 10-120
Set OSD display language to
English.
user mode.
N/A N/A
N/A N/A
50 every step with
changed five DAC
value
50,every step with
changed five DAC
value
10 every step with
changed five DAC
value
N/A
Language
Information
Reset
Deutsch N/A
Français N/A
Español N/A
Italiano N/A
Chinese N/A
Information N/A
Yes N / A
No N/A
Set OSD display language to
German.
Set OSD display language to
French.
Set OSD display language to
Spain.
Set OSD display language to
Italian.
Set OSD display language to
Simplified Chinese.
Show the resolution, H/V
frequency and input port of
current iput timing.
Clear each old status of
Auto-configuration and set the
color temperature to Cool.
Do not execute reset, return to
main menu.
N/A
The Language will
be set to English.if
N/A
customer have
strange request,pls
N/A
refer to customer.
Request.
N/A
N/A
N/A N/A
N/A N/A
N/A N/A
Exit
N/A N/A Exit OSD N/A N/A
Page 6 of 66
4. INPUT/OUTPUT SPECFICATION
英华家电维修资料专用 QQ:505966338
4.1 INPUT SIGNAL CONNECTOR
PIN NO. DESCRIPTION PI N NO. DESCRIPTION
1. Red 9. NC
2. Green 10. Logic Ground
3. Blue 11. Monitor Ground
4. Monitor Ground 12. DDC-Serial Data
5. DDC-Return 13. H-Sync
6. R-Ground 14. V-Sync
7. G-Ground 15. DDC-Serial Clock
8. B-Ground
VGA Connector layout
15
6
11 15
AOC LM2028
10
Page 7 of 66
4.2 FACTORY PRESET DISPLAY MODES：
英华家电维修资料专用 QQ:505966338
VESA MODES
AOC LM2028
Mode Resolution Total
640x480@60Hz 800 x 525 31.469 N 59.940 N 25.175
VGA
SVGA
XGA
SXGA
640x480@72Hz 832 x 520 37.861 N 72.809 N 31.500
640x480@75Hz 840 x 500 37.500 N 75.00 N 31.500
800x600@56Hz 1024 x 625 35.156 N/P 56.250 N/P 36.000
800x600@60Hz 1056 x 628 37.879 P 60.317 P 40.000
800x600@72Hz 1040 x 666 48.077 P 72.188 P 50.000
800x600@75Hz 1056x625 46.875 P 75.000 P 49.500
1024x768@60Hz 1344x806 48.363 N 60.004 N 65.000
1024x768@70Hz 1328x806 56.476 N 70.069 N 75.000
1024x768@75Hz 1312x800 60.023 P 75.029 P 78.750
1280x1024@60Hz 1688x1066 63.981 P 60.020 P 108.000
1280x1024@75Hz 1688x1066 79.976 P 75.025 P 135.000
Horizontal Vertical
Nominal
Sync
Frequency
Polarity
+/- 0.5kHz
Nominal
Sync
Freq.
Polarity
+/- 1 Hz
Nominal
Pixel
Clock
(MHz)
UXGA 1600*1200 @60Hz 2160x1250 75.00 N 60.00 N 162.00
IBM MODES
Horizontal Vertical
DOS 720x400@70Hz 900 x 449 31.469 N 70.087 P 28.322
DOS 640x400@70Hz 800 x 449 31.469 N 70.087 P 25.175
XGA 1024x768@72Hz 1304 x 798 57.515 P 72.1 P 75.000
MAC MODES
VGA 640x480@67Hz 864x525 35.000 N 66.667 N 30.240
SVGA 832x624@75Hz 1152x667 49.725 N 74.551 N 57.2832
1024x768@60Hz 1312x813 48.780 N 60.001 N 64.000 XGA
1024x768@75Hz 1328x804 60.241 N 74.927 N 80.000
Page 8 of 66
4.3 PANEL SPECIFICATION
英华家电维修资料专用 QQ:505966338
4.3.1 PANEL FEATURE
－ 20.1 inch Color TFT-LCD
－ ALL input signals are 2 Channel LVDS interface compatible
－ Supports the SXGA(H1600Pixel × V1200Lines) resolution
－ By applying 16.7M colors (RGB 8 bit data)
AOC LM2028
－ This module does not contain an inverter card for backlight
4.3.2 DISPLAYS CHARACTERISTICS
Page 9 of 66
4.3.3 OPTICAL CHARACTERISTICS
英华家电维修资料专用 QQ:505966338
The optical characteristics are measured under stable conditions at 25℃ (Room Temperature)：
AOC LM2028
4.3.4 PARAMETER GUIDE LINE FOR CFL INVERTER.
Page 10 of 66
5. BLOCK DIAGRAM
英华家电维修资料专用 QQ:505966338
5.1 SOFTWARE FLOW CHART
AOC LM2028
1
2
4
5
6
7
9
Y
N
N
Y
N
Y
3
8
18
10
N
N
12
14
19
N
Y
Y
11
13
15
17
N
Y
N
Y
16
Page 11 of 66
英华家电维修资料专用 QQ:505966338
1). MCU initialize.
2). Is the eeprom blank?
3). Program the eeprom by default values.
4). Get the PWM value of brightness from eeprom.
5). Is the power key pressed?
6). Clear all global flags.
7). Are the AUTO and SELECT keys pressed?
8). Enter factory mode.
9). Save the power key status into eeprom. Turn on the LED and set it to green color. Scalar initialize.
10). In standby mode?
11). Update the life time of back light.
12). Check the analog port, are there any signals coming?
AOC LM2028
13). Does the scalar send out an interrupt request?
14). Wake up the scalar.
15). Are there any signals coming from analog port?
16). Display "No connection Check Signal Cable" message. And go into standby mode after the message disappears.
17). Program the scalar to be able to show the coming mode.
18). Process the OSD display.
19). Read the keyboard. Is the power key pressed?
Page 12 of 66
5.2 ELECTRICAL BLOCK DIAGRAM
英华家电维修资料专用 QQ:505966338
5.2.1 SCALAR BOARD BLOCK DIAGRAM
AOC LM2028
LCD Interface
MCU
W78E65P-40
(U402)
Scalar MST9251
(Include ADC, OSD)
(U403)
OSD Control
(Keypad)
EEPROM
AT24C16AN-10SI-2.7
(U501)
Crystal (Y1)
14.318MHz
D-Sub
Connector
(CN2)
EEPROM
24C02
Page 13 of 66
5.3.2 INVERTER/POWER BOARD BLOCK DIAGRAM
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Inverter Block Diagram
AOC LM2028
Page 14 of 66
AOC LM2028
英华家电维修资料专用 QQ:505966338
Power Block Diagram
Page 15 of 66
6.SCHEMATIC
英华家电维修资料专用 QQ:505966338
6.1 MAIN BOARD
AOC LM2028
03. Graphic s/C omponent s I n
+5V
RXC+
RXCRX2+
RX2-
RX1+
RX1-
RX0+
RX0-
DVI_SDA
DVI_SCL
AVS
AHS
GREEN+
GREEN-
BLUE+
BLUE-
RED+
RED-
SOG
RXD
TXD
WP_DDC_VGA
WP_DDC_DVI
VGA_SDA
VGA_SCL
VGA_CAB
DVI_CAB
05. MST6251
RXC+
RXCRX2+
RX2-
RX1+
RX1RX0+
RX0DVI_SDA
DVI_SCL
AVS
AHS
GREEN+
GREEN-
BLUE+
BLUE-
RED+
RED-
SOG
05. MST9251
06. MCU
RXD
TXD
WP_DDC_VGA
WP_DDC_DVI
VGA_SDA
VGA_SCL
VGA_CAB
DVI_CAB
04. Fram e Memory
FSBKSEL0
FSBKSEL1
FSCLK-
/FSC AS
FSDQSU2
FSDQSU0
FSDQSU3
FSCLK+
FSDQSU1
FSDQM0
FSDQM1
/FSR AS
/FSWE
FSCKE
VDDC
+APLL
+5V
FSADD R[0.. 11]
FSDATAU[ 0..31]
+5V
FSADDR[0..11]
FSDATAU[0..31]
+3.3 DV1
+3.3 DV2
+2.5 MVDD
AVDDA
VDD_MPLL
AVDD_PLL
AVDDPLL2
AVDD_DVI
ADJ_PW M
INT
INT
ALE
ALE
HWR ESET
HWRESET
Panel_Power
ON_PBACK
ON_PANEL
WR
RD
AD[0. .3]
AD[0..3]
RD
WR
AD[0. .3]
FSBKSEL0
FSBKSEL1
FSCLK/FSCAS
FSDQSU2
FSDQSU0
FSDQSU3
FSCLK+
FSDQSU1
FSDQM0
FSDQM1
/FSRAS
/FSWE
FSCKE
FSADD R[0.. 11]
FSDATAU[ 0..31]
04. Fram e Memory
07. Power
+3.3 DV1
+3.3 DV2
+2.5 MVDD
AVDDA
VDD_MPLL
AVDD_PLL
AVDDPLL2
AVDD_DVI
VDDC
+APLL
ADJ_PW M
Panel_Power
ON_PBACK
ON_PANEL
+5V
+2.5 V_DMC
+2.5 V_DMQ
+2.5 V_DMQ
+2.5 V_DMC
03. Graphic s/C omponent s I n
06. MCU
Page 16 of 66
07. Power
DVI CONNECTOR
英华家电维修资料专用 QQ:505966338
CN1
25
25
RX2RX2+
GND
RX4RX4+
SCL
SDA
VS
RX1RX1+
GND
RX3RX3+
5V
GND
HP
RX0RX0+
GND
RX5RX5+
GND
RXC+
RXC-
RED
GRN
BLU
HS
GND
26
26
GND
DVI_CON
GND
GND
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
C1
C2
C3
C4
C5
D13 MLL5232B 5.6V
2
D1
BAV99
RX2-IN
RX2+IN
DVISCL
DVISDA
RX1-IN
RX1+IN
DVI_5V
HOT_PLUG
RX0-IN
RX0+IN
RXC+IN
RXC-IN
93/4/7
Serial Resistor DVI signal
GND
MLL5232B 5.6V
D14
D15
920623:EDID Function
VGA_5V
+5V
1
2
D17
BAT54C-GS08
R39
NC
R306
NC
C10
0.1uF/16V
GND
VGA_EDID
10K 1/16 W
WP_DDC _VGA_IN
GND
GND
U2
2
A1A2WP
3
4
GND
M24C02WMN6
GND
ANALOG DDC
WP_DDC_VGA_IN
WP_DDC_DVI_IN
VCCA0
SCL
SDA
R35
4.7K 1/16W
R305
4.7K 1/16W
3
81
7
6
5
VGA_EDID
GND
DVI_EDID
GND
+5V
C1 0.1uF/16V
1
2
1
D2
BAV99
3
R5
10K 1/16W
D12 MLL5232B 5.6V
R23
10K 1/ 16W
3
R24
2
GND
D3
BAV99
DVISCL
DVISDA
VGASCL
VGASDA
R18 100 OHM
R25 100 OHM
1
3
R14 100 OHM
R15 100 OHM
920623:Re-Name
RXD6
TXD6
920623:ISP Function
Q300
PMBS3904
R300
10K 1/16 W
R301
30K 1/ 16W
GND
920629:EDID Addition
Protection
Q301
PMBS3904
R302
10K 1/16 W
R303
30K 1/ 16W
GND
WP_DDC_VGA 6
WP_DDC_DVI 6
+5V
2
D4
BAV99
MLL5232B 5.6V
C2 0.1uF/16V
1
3
GND
10K 1/ 16W
GND
VGA_SCL_IN
VGA_SDA_IN
R29 0
R30 0
GND
D10 MLL5232B 5.6V
R12
2
3
4
2
D5
BAV99
3
DVI_EDID
R13
10K 1/ 16W
U1
VCCA0
A1A2WP
SCL
GND
SDA
M24C 02W MN6
DIGIT AL DDC
GND
A-VS
+5V
1
2
D6
BAV99
3
81
7
6
5
GND
Graphic Inputs
CN2
15
14
13
12
11
VGA_DB15
D21
MLL5232B 5.6V
A-HS
C3 0.1uF/16V
1
GND
DVI_5V
+5V
1
2
3
GND
D16 MLL5232B 5.6V
5
10
4
9
3
8
2
7
1
6
RGB GND
Conn
D22
MLL5232B 5.6V
GND
+5V
C4 0.1uF/ 16V
1
2
D7
BAV99
3
D11
BAT54C-GS08
WP_DDC_DVI_IN
C5
0.1uF/16V
+5V
VGA_5V
GND
1
2
D8
BAV99
920623:EDID Function
+5V 6 ,7
R16
10K 1/ 16W
R17 100 OHM
A-BLUE
A-GREEN
A-RED
GND
3
VGA_CAB 6
R3375 1/16W
R3175 1/16W
R3275 1/16W
狠
GND
GND
GND
Near the VGA Conn
L1 120 OHM 0603
D23
MLL5232B 5.6V
GND
D24
MLL5232B 5.6V
Page 17 of 66
R1 10 1/ 16W
R2 10 1/ 16W
R3 10 1/ 16W
R4 10 1/ 16W
R7 10 1/ 16W
R8 10 1/ 16W
R10 10 1/16W
R11 10 1/16W
2
D18
BAV99
R37 100 OHM
D20
BAV99
TP1
TP2
TP3
TP4
TP5
TP6
TP7
TP8
1
2
3
C15
R41
33pF
2.2K 1/16W
GND
1
2
1
D19
BAV99
3
93/4/7
3 VGA GND traces as Differential Pair
with VGA Analog signals(RGB).
3
R40
2.2K 1/16W
RX2- 5
RX2+ 5
RX1- 5
RX1+ 5
RX0- 5
RX0+ 5
RXC+ 5
RXC- 5
DVI Test P oints are just SMTobse rvation points
on the traces with no stub
+5V
920702:DSN Function
C6
0.1uF/16V
GND
C16
220pF
R6 10 1/ 16W
R9
100K 1/ 16W
GND
R19 470 1/16W
R20 33 1/16W
R21 75 1/16W
R22 33 1/16W
R26 75 1/ 16W
R27 33 1/16W
R28 75 1/16W
RGB SIGNAL GNDs at 2-mm from respective
RGB series Capacitor s
R34 1K 1/16W
R38 1K 1/16W
D9
MLL5232B 5.6V
GND
C7 1nF
C8 47nF
C9 47nF
C11 47nF
C12 47nF
C13 47nF
C14 47nF
Title
03. Graphic/Component IN
Size Doc ument Number Rev
C
Date: Sheet
DVI_SCL 5
DVI_SDA 5
VGA_SCL 6
VGA_SDA 6
AHS 5
AVS 5
DVI_CAB 6
AOC LM2028
SOG 5
BLUE+ 5
BLUE- 5
GREEN+ 5
GREEN- 5
RED+ 5
RED- 5
A
37Thursday, August 19, 2004
of
+2.5V _DMQ
英华家电维修资料专用 QQ:505966338
AOC LM2028
+2.5V _DMC
TC1
+
GND
FSCLK+
FSCLK-
Place this parallel ter mination close to
corresponding memory IC Pins
FSDQSU05
FSDQSU25
FSDQSU15
FSDQSU35
FSDQM05
FSDQM15
+2.5V _DMQ
R51
10K 1/16W
R52
10K 1/16W
GND
Near The DDR-SDRAM IC
C17
22uF/16V
0.1uF/ 16V
FSADDR[0..11]5
R42
150 1/16W
5%
FSBKSEL05
FSBKSEL15
FSCLK-5
FSCLK+5
/FSR AS5
/FSC AS5
FSDQM0 FSDATAU4
FSDQM1
FSVREF
FSVREF
C37
0.1uF/ 16V
GND
C18
C19
0.1uF/ 16V
0.1uF/ 16V
FSCKE5
/FSWE5
R43 0 ohm
R44 0 ohm
R45 0 ohm
R46 0 ohm
R47 33 1/16W
R48 33 1/16W
R49 33 1/16W
R50 33 1/16W
Near The
DDR-SDRAM IC
Stub as short as
possible.
C20
0.1uF /16V
+2.5 V_DMQ7
FSADDR0
FSADDR1
FSADDR2
FSADDR3
FSADDR4
FSADDR5
FSADDR6
FSADDR7
FSADDR8
FSADDR9
FSADDR10
FSADDR11
FSBKSEL0
FSBKSEL1
FSCLKFSCLK+
FSCKE
/FSR AS
/FSC AS
/FSWE
FSDQS3
FSDQS1
FSDQS2
FSDQS0
FSDQM11
FSDQM01
FSDQM00
C21
0.1uF/ 16V
GND
+2.5V _DMQ
U401
M4
A0
M5
A1
L5
A2
M6
A3
M7
A4
L8
A5
M8
A6
M9
A7
M10
A8/AP
L7
A9
K5
A10
L6
A11
M3
BA0
L4
BA1
L11
CK#
L10
CK
M11
CKE
M1
CS#
L1
RAS#
K1
CAS#
K2
WE#
A1
DQS0
G12
DQS1
G1
DQS2
A12
DQS3
A2
DM0
G11
DM1
G2
DM2
A11
DM3
B3
NC
B10
NC
G3
NC
G10
NC
K8
NC
K11
NC
K12
NC
L2
NC
L3
NC
L9
NC
L12
NC
M2
NC
EM6A9320BI-5M
C23
C22
0.1uF/ 16V
0.1uF/ 16V
+2.5V _DMC7
B2B4B6B7B9
B11D2D11E3E10F3F10H3H10J3J10
VDDQ
VDDQ
VDDQ
VDDQ
VDDQ
VDDQ
VDDQ
VDDQ
VDDQ
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
D4D6D7D9E5E6E7E8F5F6F7F8G5G6G7G8H5H6H7H8J5J6J7J8K4
VDDQ
VSS
VDDQ
VSS
VDDQ
VSS
GND
VDDQ
VSS
VDDQ
VSS
C24
0.1uF/16V
+2.5V _DMC
VDDQ
VDDQ
VSS
VSS
VSS
C6C7D3
VDD
VDD
VSS
VSS
C25
0.1uF/16V
D10K3K6K7K10
VDD
VDD
VDD
VSS
VSS
VSS
Page 18 of 66
VDD
VSS
VDD
VSS
C26
0.1uF/16V
FSVR EF
M12
VDD
VREF
VSS
VSS
K9
DQ0
DQ1
DQ2
DQ3
DQ4
DQ5
DQ6
DQ7
DQ8
DQ9
DQ10
DQ11
DQ12
DQ13
DQ14
DQ15
DQ16
DQ17
DQ18
DQ19
DQ20
DQ21
DQ22
DQ23
DQ24
DQ25
DQ26
DQ27
DQ28
DQ29
DQ30
DQ31
VSSQ
VSSQ
VSSQ
VSSQ
VSSQ
VSSQ
VSSQ
VSSQ
VSSQ
VSSQ
VSSQ
VSSQ
VSSQ
VSSQ
VSSQ
VSSQ
VSSQ
VSSQ
VSSQ
VSSQ
C27
0.1uF/16V
A6
B5
A5
A4
B1
C2
C1
D1
J12
J11
H12
H11
F12
F11
E12
E11
E2
E1
F2
F1
H2
H1
J1
J2
D12
C12
C11
B12
A9
A8
B8
A7
A3
A10
C3
C4
C5
C8
C9
C10
D5
D8
E4
E9
F4
F9
G4
G9
H4
H9
J4
J9
GND
C28
0.1uF /16V
FSDATA0
FSDATA1
FSDATA2
FSDATA3
FSDATA4
FSDATA5
FSDATA6
FSDATA7
FSDATA16
FSDATA17
FSDATA18
FSDATA20
FSDATA21
FSDATA22
FSDATA23
FSDATA8
FSDATA9
FSDATA10
FSDATA11
FSDATA12
FSDATA13
FSDATA14
FSDATA15
FSDATA24
FSDATA25
FSDATA26
FSDATA27
FSDATA28
FSDATA29
FSDATA30
FSDATA31
FSDATA[0..31]
0
2
1
3
C29
0.1uF /16V
8
7
6
5
8
7
6
5
8
7
6
5
8
7
6
5
8
7
6
5
8
7
6
5
8
7
6
5
8
7
6
5
C30
0.1uF /16V
RN1
RN2
RN3
RN4
RN5
RN6
RN7
RN8
GND
TC2
+
22uF/ 16V
FSDATA24
FSDATA25
FSDATA26
FSDATA27
FSDATA28
FSDATA29
FSDATA30
FSDATA31
FSDATA8
FSDATA9
FSDATA10
FSDATA11
FSDATA12
FSDATA13
FSDATA14
FSDATA15
FSDATA0
FSDATA1
FSDATA2
FSDATA3
FSDATA4
FSDATA5
FSDATA6
FSDATA7
FSDATA16
FSDATA17
FSDATA18
FSDATA19
FSDATA20
FSDATA21
FSDATA22
FSDATA23
Near The DDR-SDRAM IC
C31
0.1uF /16V
RP 33 X4
1
FSDATAU24
2
FSDATAU25
3
FSDATAU26
4
FSDATAU27
RP 33 X4
FSDATAU28
1
2
FSDATAU29
FSDATAU30
3
4
FSDATAU31
RP 33 X4
FSDATAU8FSDATA19
1
FSDATAU9
2
FSDATAU10
3
FSDATAU11
4
RP 33 X4
1
FSDATAU12
FSDATAU13
2
FSDATAU14
3
4
FSDATAU15
RP 33 X4
FSDATAU0
1
FSDATAU1
2
FSDATAU2
3
FSDATAU3
4
RP 33 X4
1
FSDATAU5
2
FSDATAU6
3
FSDATAU7FSDQM10
4
RP 33 X4
FSDATAU16
1
2
FSDATAU17
3
FSDATAU18
4
FSDATAU19
RP 33 X4
FSDATAU20
1
2
FSDATAU21
FSDATAU22
3
4
FSDATAU23
Tit le
04. Frame Memory
Size Document Number Rev
B
Date: Sheet
C32
0.1uF /16V
C33
0.1uF /16V
FSDATAU0
FSDATAU1
FSDATAU2
FSDATAU3
FSDATAU4
FSDATAU5
FSDATAU6
FSDATAU7
FSDATAU8
FSDATAU9
FSDATAU10
FSDATAU11
FSDATAU12
FSDATAU13
FSDATAU14
FSDATAU15
FSDATAU16
FSDATAU17
FSDATAU18
FSDATAU19
FSDATAU20
FSDATAU21
FSDATAU22
FSDATAU23
FSDATAU24
FSDATAU25
FSDATAU26
FSDATAU27
FSDATAU28
FSDATAU29
FSDATAU30
FSDATAU31
C34
0.1uF /16V
C35
0.1uF /16V
FSDATAU[0. .31]
FSDATAU[0..31]5
47Wednesday , August 18, 2004
C36
0.1uF /16V
of
A
AOC LM2028
英华家电维修资料专用 QQ:505966338
+3.3D V1 AVDD_PLL
AVDD_ADC
AVDD_DVI
AVDD_ADC
VDD_MPLL
+3.3DV 2
+3.3D V27
AVDD_DVI
AVDD_DVI
VDDP
AVDD_MPLL
GND
GND
GND
GND
GND
GND
GND
GND
GND
VDD_MPLL7
AVDD_DVI7
AVDDA
MST9251
AVDDA7
U403
DVI_R+
DVI_RDVI_G+
DVI_GDVI_B+
DVI_BDVI_CK+
DVI_CKREXT
DDCD_DA
DDCD_CK
HSYNC1
VSYNC1
BIN1
BIN1M
SOGIN1
GIN1
GIN1M
RIN1
RIN1M
BIN0M
BIN0
GIN0M
GIN0
SOGIN0
RIN0M
RIN0
HSYNC0
VSYNC0
RMID
REFP
REFM
VI_DATA[8]
VI_DATA[9]
VI_DATA[10]
VI_DATA[11]
VI_DATA[12]
VI_DATA[13]
VI_DATA[14]
VI_DATA[15]
GPIO[5]/VHS
GPIO[4]/VCLK2
VI_CK
VI_DATA[0]
VI_DATA[1]
VI_DATA[2]
VI_DATA[3]
VI_DATA[4]
VI_DATA[5]
VI_DATA[6]
VI_DATA[7]
GPIO[2]/VVS
HWRESET
INT
ALE
RDZ
WRZ
DBUS[0]
DBUS[1]
DBUS[2]
DBUS[3]
PWM0
PWM1
VCTRL
BYPASS
GPIO[3]/VDE
GPIO[1]/FIELD
XOU T
XIN
RX2+
RX2+3
RX2-
RX2-3
RX1+
RX1+3
RX1-
RX1-3
RX0+
RX0+3
RX0-
RX0-3
RXC+
RXC+3
RXC-
RXC-3
DVI INPUT
390 1% 1/16W
AVDD_DVI
R53
VGA INPUT
R60
10K 1/ 16W
ADJ_PWM7
R59 100 1/ 16W
HWRESET
AD[0..3]
HWRESET
INT
ALE
RD
WR
AD0
AD1
AD2
AD3
HWRESET6
INT6
ALE6
RD6
WR6
AD[0..3]6
uP IN TERF ACE
DVI_SDA3
DVI_SCL3
BLUE+3
BLUE-3
GREEN+3
GREEN-3
RED+3
RED-3
C42
0.1uF/ 16V
22pF
AHS3
AVS3
SOG3
C44
RX2+
RX2RX1+
RX1RX0+
RX0RXC+
RXC-
C40 0.1uF/16V
C41 0.1uF/16V
INT
ALE
RD
WR
AD0
AD1
AD2
AD3
ADJ_PWM
C43
0.1uF/16V
XTAL
Y1
TCLK
14.318MHz
C4522pF
+3.3D V1 7
+2.5MVDD7
VDDP
VDDP
GND
GND
GND
GND
GND
GND
AVDD_PLL7
+APLL7
+2.5MV DD
VDDM
VDDM
VDDM
VDDM
VDDM
GND
GND
GND
GND
GND
GND
GND
VDDM
GND
AVDDPLL2
+APLL
GND
GND
GND
GND
AVDDPLL2 7
VDDC
VDDC 7
NC
VDDC
VDDC
VDDC
VDDC
VDDC
VDDC
VDDC
AVDD_PLL
AVDD_PLL2
AVDD_APLL
+2.5MVDD
MVref
MVref
For AOC LCD I/FF/W default set Odd/Even Swap.
4/13/93
NCNCNCNCNCNCNCNCNC
LVB0M
LVB0P
LVB1M
LVB1P
LVB2M
LVB2P
LVBCKM
LVBCKP
LVB3M
LVB3P
LVA0M
LVA0P
LVA1M
LVA1P
LVA2M
LVA2P
LVACKM
LVACKP
LVA3M
LVA3P
R61
1K 1/ 16W
R62
1K 1/ 16W
DQS[0]
MDATA [0]
MDATA [1]
MDATA [2]
MDATA [3]
MDATA [4]
MDATA [5]
MDATA [6]
MDATA [7]
MDATA [8]
MDATA [9]
MDATA[10]
MDATA[11]
MDATA[12]
MDATA[13]
MDATA[14]
MDATA[15]
DQS[1]
DQM[0]
DQM[1]
DQS[2]
MDATA[16]
MDATA[17]
MDATA[18]
MDATA[19]
MDATA[20]
MDATA[21]
MDATA[22]
MDATA[23]
MDATA[24]
MDATA[25]
MDATA[26]
MDATA[27]
MDATA[28]
MDATA[29]
MDATA[30]
MDATA[31]
DQS[3]
MADR[11]
MADR[10]
MADR[9]
MADR[8]
MADR[7]
MADR[6]
MADR[5]
MADR[4]
MADR[3]
MADR[2]
MADR[1]
MADR[0]
BADR[0]
BADR[1]
MCLK Z
MCLK E
MVRE F
WEZ
CASZ
RASZ
MCLK
C46
0.1uF/16V
FSBKSEL0
FSBKSEL1
FSCKE
C47
0.01uF
FSDATAU0
FSDATAU1
FSDATAU2
FSDATAU3
FSDATAU4
FSDATAU5
FSDATAU6
FSDATAU7
FSDATAU8
FSDATAU9
FSDATAU10
FSDATAU11
FSDATAU12
FSDATAU13
FSDATAU14
FSDQM0U
FSDQM1U
FSDATAU16
FSDATAU17
FSDATAU18
FSDATAU19
FSDATAU20
FSDATAU21
FSDATAU22
FSDATAU23
FSDATAU24
FSDATAU25
FSDATAU26
FSDATAU27
FSDATAU28
FSDATAU29
FSDATAU30
FSDATAU31
TXA0TXA0+
TXA1TXA1+
TXA2TXA2+
TXB0TXB0+
TXB1TXB1+
TXB2TXB2+
TXBCTXBC+
TXB3TXB3+
MVref
TXACTXAC+
TXA3TXA3+
/FSWE
/FSCAS
FSDATAU15
/FSRAS
R54 33 1/16W
R55 33 1/16W
FSCLK+
FSCLK-
MVref
Panel_Power7
FSDQSU0 4
FSADDR11
FSADDR10
FSADDR9
FSADDR8
FSADDR7
FSADDR6
FSADDR5
FSADDR4
FSADDR3
FSADDR2
FSADDR1
FSADDR0
FSBKSEL0 4
FSBKSEL1 4
FSCKE 4
Unloaded trace im pedance on this inter face is 90 Ohm
Loade d trace imped ace w ith DRAM load is 65 Ohm (for 2.5 inch to tal trace
length)
FSADDR[0..11]4
FSDQSU1 4
FSDQM0 4
FSDQM1 4
FSDQSU2 4
FSDQSU3 4
Remove Addr/Comm
RN9/RN10/RN11/RN12/RN13
04/13
/FSWE 4
/FSCAS 4
/FSRAS 4
FSCLK+, FSCLK- should be routed
FSCLK+ 4
like a differe ntail pair
FSCLK- 4
LVDS Panel connector
Inter faces d irectly to SXGA
and UXGA LVDS Panels
CONNECTOR for PANEL
TXA0TXA1TXA2TXACTXA3TXB0TXB1TXB2TXBCTXB3-
GND
600 OHM BEAD
L2
+
TC3
47uF/25V
FSDATAU[0..31]
FSADDR0
FSADDR1
FSADDR2
FSADDR3
FSADDR4
FSADDR5
FSADDR6
FSADDR7
FSADDR8
FSADDR9
FSADDR10
FSADDR11
CN3
2
1
4
3
6
5
8
7
10
9
12
11
14
13
16
15
18
17
20
19
22
21
24
23
LCD HEADER 12X2.Normal
(5mm)
C38
0.1uF/16V
FSDATAU[0..31] 4
TXA0+
TXA1+
TXA2+
TXAC+
TXA3+
TXB0+
TXB1+
TXB2+
TXBC+
TXB3+
C39
0.1uF/16V
GND
Page 19 of 66
Titl e
05. MST9251
Size Doc ument Number Rev
C
Date: Sheet
57Friday, August 20, 2004
of
A
3
英华家电维修资料专用 QQ:505966338
VCC
LM810M3-2.93V
DIO/MA730
1
2
GND
RESET
VMCU
C52
12
0.1uF /16V
U501
1
A0
2
A1
3
A2
4 5
GND SD A
24C16
U4
(RESET)RESET
3
VCC
ASM8 10ME UR -T
8
VCC
7
WP
6
SCL
+5V
+5V3,7
POWER FOR MCU
RESET IC
ACTIVE HIGH /RESET
2
1
GND
C53
4.7K 1/16W
WP
R76 100 1/16W
R77 100 1/16W
0.1uF /16V
VMCU
RESET
R71
VMCU
L3
600 OHM
600 OHM
VMCU
VMCU
C50
NC(2.2uF/16V)
D25
NC
R72
4.7K 1/16W
MSC L
MSD A
VMCU
TC4
+
10uF/ 16V
R63
8.2K 1/16W
WP_DDC_VGA3
600 OHM
VGA_CAB3
DVI_CAB3
HWRESET5
ON_PANEL7
ON_PBAC K7
10K 1/16W
ALE5
C49 22pF
C51 22pF
INT5
VMCU
R73
WP
R78
NC
Y224.576MHz
RESET
INT
IR_DATA
VGA_CAB
DVI_CAB
HWRESET
ALE
ON_PANEL
ON_PBACK
WP_DDC _VGA
R75
100 1/16W
For Bank Select
Syntek 128kB
Issue
EA/VP
UCLK
WP_MCU
PWR_Y
U402
EA/VP
X1
X2
RESET
INT0/P3.2
INT1/P3.3
T0/ P3. 4
T1/ P3. 5
P1.0
P1.1
P1.2
P1.3
P1.4
P1.5
P1.6
P1.7
P4.2
P4.3/ISP
W78E65P-40
VMCU
GND VCC
R704.7K 1/16W
VMCU
4.7K 1/16W
C48
0.1uF /16V
P0.0
P0.1
P0.2
P0.3
P0.4
P0.5
P0.6
P0.7
P2.0
P2.1
P2.2
P2.3
P2.4
P2.5
P2.6
P2.7
RD/P3.7
WR/P3.6
PSEN
ALE/P
TXD/ P3. 1
RXD/P3.0
P4.0
P4.1
1
VMCU
3 2
LED1
R307
R74
470 1/16W
Q1
MMBT3906
920629:EDID Addition
Protection
876
5
RN9
RP10K X4
123
4
AD0
AD[0..3]
AD1
AD2
AD3
WP_DDC_DVI
MSC L
MSD A
R272 470 1/16W
R273 470 1/16W
R274 470 1/16W
R275 470 1/16W
R276 470 1/16W
R277 470 1/16W
WP_MC U
PWR_R
PWR_Y
PWR_R
AD[0..3] 5
WP_DDC_DVI 3
OSD_S1(POW ER)
OSD_S2(MENU )
OSD_S3(LEF T)
OSD_S4(R IGHT)
OSD_S5(AU TO)
OSD_S6(SOURCE)
RD
WR
R68 NC
R69 NC
1
R664.7K 1/16W
R674.7K 1/16W
RXD
TXD
VMCU
LED2
3 2
Q2
MMBT3906
Near the VGA Connector.
(ISP & DDC-CI)
R79 4.7K 1/16W
VMCU
VGA_SDA 3
VGA_SCL 3
RXD 3
TXD 3
R80
470 1/16W
AOC LM2028
Ke yPad co n n e c to r
CN4ら稸BL106-10-Key Pad
VMCU
R644.7K 1/16W
R654.7K 1/16W
RD 5
WR 5
OSD_S1(POWER)
OSD_S2(MENU)
OSD_S3(LEFT)
OSD_S4(RI GHT)
OSD_S5(AUTO)
OSD_S6(SOURCE)
LED1
LED2
OSD_S1(POWER )
OSD_S2(MENU)
OSD_S3(LEFT)
LED1
OSD_S1(POW ER)
OSD_S3(LEF T)
OSD_S5(AU TO)
123456789
CN5
1
3
5
7
9
CONN
12
C351100pF
10
OSD_S6(SOURCE)
OSD_S5(AUTO)
OSD_S4(RIGHT)
LED2
2
OSD_S2(MENU)
4
OSD_S4(RIGHT)
6
OSD_S6(SOURCE)
8
10
12
12
12
C353100pF
C352100pF
920701:MCU ESD & Driver
Protection
For AOC
For MST
12
C355100pF
C354100pF
GND
12
C356100pF
CN9
CONN
IR
VMCU
3
2
1
TC5
+
22uF/ 16V
GND
R81
10K 1/16W
IR1
C54
0.1uF /16V
32
Q3
1
PMBS3904
IR_DATA
R82
10K 1/16W
Debug port
+5V
TXD
RXD
CN10
1
2
3
4
NC
GPROBE
Page 20 of 66
Tit le
06. MCU
Size Document Number Rev
Custom
Date : Sheet
of
67F riday , August 27, 2004
A
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