Lenovo LXM-WL20AH User manual

Lenovo LXM-WL20AH
1
SERVICE MANUAL
LXM-WL20AH
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.
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Lenovo LXM-WL20AH
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Table of Content
Revision …………………………………………………………………………………………………………………. 3
1. Monitor Specifications…………………………………………………………………………………………… 4
2. LCD Monitor Description………………………………………………………………………………..………… 5
3. Operating Instructions……………………………………………………………………………………………... 6
3.1 General Instructions…………………………………………………………………………………………..….. 6
3.2 Control Button …………………………………………………………………………………………………..... 6
3.3 Adjust the Picture………………………………….………………………………………………………….….. 6
4. Input/Output Specification……………………………………………………………………………………….... 8
4.1 15 Pin D-Sub Signal ….……………...……………………………………………………...………………...… 8
4.2 24 Pin DVI Signal…………………………………………………………………………………………………. 8
4.3 Factory Preset Display Modes…………………………………………………………………………..……… 9
4.4 Power Supply Characteristics …………………………………………………………………………..……... 9
5. Panel Specification ………………………………………………………..…………………………………..…… 11
5.1 Panel Feature……………………………………………………………………...……….………………….. 10
5.2 Display Characteristics…………………………………………………………….………………………….. 10
5.3 Optical Characteristics………………………………………………………………………………………… 10
5.4 Electrical Characteristics………………………………………………………………………………...……. 11
6. Block Diagram……………………………………………………………………………………………….………. 12
6.1 Software Flow Chart………………………………………………………………………………………........... 12
6.2 Explored Viewing …...……………………………………………………………………………………........... 14
6.3 Electrical Block Diagram…………………………………………………………………………………………. 15
7. Schematic………………………………………………………………………………………………….…………. 16
7.1 Main Board………………………………………………………………………………………………………... 16
7.2 Power Board…………………………………………………………………………………….………………… 21
8. PCB Layout…………………………………………………………………………………………………………… 24
8.1 Main Board………………………………………………………………………………………………………... 24
8.2 Power Board……………………………………………………………………….……………………………… 25
9. Maintainability……………………………………………………………………………………………………….. 26
9.1 Equipments and Tools Requirement……………………………………………………………………………. 26
9.2 Trouble Shooting……………………………………………………………………………….………………… 27
9.2.1 Main Board……………………………………………………………………………………...................... 27
9.2.2 Keypad Board……………………………………………………………………………………………….. 30
9.2.3 Power /Inverter/Board………………………………………………………………………………………. 30
10. White-Balance, Luminance adjustment……………………………………………………….….…………… 32
11. EDID Content……………………………………………………………………………………………………….. 33
12. BOM List ……………………………………………………………………………………………………………. 34
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Lenovo LXM-WL20AH
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Revision List
Version Date Revision History TPV Model Name
A00 Jan-23, 2006 Initial Release TA90KG4MDLG1NP
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Lenovo LXM-WL20AH
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1. Monitor Specifications
Items Specification
Model LM201W01
Active Size 20.1 inches(511.133mm) diagonal
Aspect ratio 16:10
Pixel Pitch 0.258mm(H) x 0.258mm(V)
Panel
Color Depth 8 bit, 16.7 colors
R. G. B analog signals, 0.7Vp-p / 75Ω
Video
DVI digital TMDS signals
Separate Sync H/V TTL
H Frequency 30kHz - 93kHz
Input
V Frequency 56Hz-85Hz
Dot Frequency 135MHz
Prug and Play VESA DDC2BTM, DDC CI, MCCS
Max. Display Area Horizontal: 433.44mm
Vertical: 270.9mm
Power AC 90-264VAC, 47—63HZ
Environmental
Temperature Humidity
Operating Temperature: 0°C to 40°C
Storing Temperature: -20°C to 60°C
Operating Humidity: 10% to 85%
Storing Humidity: 10-90%
ON Mode: ≤60 Watts
Max. Power Consumption
OFF Mode: ≤2 Watts
Safe CCC, CE, CSC
EMI FCC part 15 Class B, CCC, CE, FCC
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Lenovo LXM-WL20AH
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2. LCD Monitor Description
The LCD MONITOR will contain a main board, an inverter/Power board and a keypad board which house the flat panel
control logic, brightness control logic and DDC.
The power board will provide the AC to DC voltage to drive backlight and the main board chips each voltage.
Video signal, DDC
PWPC board
(Include Adapter and Inverter)
Flat Panel and
CCFL backlight
Main Board
Keyboard
RS232 Connector
For white balance
adjustment in factory
mode
HOST Computer
CCFL Drive.
AC-IN
90V-264V
Monitor Block Diagram
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3. Operating Instructions
3.1 General Instructions
Press the power button to turn the monitor on or off. The other control buttons are located by the side 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 Control Button
A. Power switch and power indication LED: Blue in power on mode and Orange in power-saving mode.
B. Menu/Select: Enter the sub menu of the selected item; activate OSD menu.
C. ▲/Brightness: decrease the value or hot key to brightness adjustment.
D. ▼/ Contrast: increase the value or hot key to contrast adjustment.
E. Exit/Auto: Exit the current menu; activate the auto adjustment function without OSD.
3.3 Adjusting the Picture
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The description for control function:
Menu
Icon Menu Item Sub Menu Icon
Sub Menu
Item Function Description
Brightness Adjust the brightness.
Brightness &
Contrast Contrast Adjust the contrast.
Horizontal
Position Adjust the horizontal position. Adjust
Position Vertical
Position Adjust the vertical position.
Phase Adjust the Phase.
Video Noise
Clock Adjust the Clock.
Language Set OSD Language. There has two choice: Chinese and
English
OSD Timer Set the display time of OSD menu.
Color
Temperature
Color Temperature choose（7800K、6500K、user mode）
Horizontal
OSD Adjust the Horizontal Position of OSD menu.
OSD Position
Vertical OSD Adjust the Vertical Position of OSD menu.
Lenovo Color
Engine
Set the mode between Text, Internet, Video and Color
Engine.
Exit OSD Exit OSD
Reset Reset the factory preset configuration
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4. Input/Output Specification
4.1 15-Pin D-Sub Signal
Pin No. Description Pin No. Description
1. Red 9. DDC +5V
2. Green/ SOG 10. GND
3. Blue 11. Sense (GND)
4. Sense (GND) 12. Bi-directional data
5. Cable detect 13. H/H+V sync
6. Red GND 14. V-sync
7. Green GND 15. Data clock
8. Blue GND
VGA Connector layout
15
610
11 15
4.2 24-Pin DVI Signal
Pin No. Description Pin No. Description
1. TMDS data2- 13. NC
2. TMDS data2+ 14. +5V
3. TMDS data2 shield 15. Ground(return for +5V and H/Vsync)
4. NC 16. Hot plug detect
5. NC 17. TMDS data0-
6. DDC clock 18. TMDS data0+
7. DDC data 19. TMDS data0 shield
8. Analog V-sync 20. NC
9. TMDS data1- 21. NC
10. TMDS data1+ 22. TMDS clock shield
11. TMDS data1 shield 23. TMDS clock+
12. NC 24. TMDS clock-
VGA Connector layout
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4.3 Factory Preset Display Modes:
Timing Dot total Horizontal
Frequency (kHz)
Vertical
Frequency (Hz)
Pixel
Frequency (mHz)
NTSC VGA@60Hz 800 × 640 31.469 59.94 25.175
PAL VGA@50Hz 884× 700 31.25 50 27.625
640x480 VGA-480-60Hz 800 × 640 31.469 59.94 25.175
640x480 VGA-480-72Hz 832 × 640 37.681 72.809 31.5
640x480 VESA-480-75Hz 840× 640 37.5 75 31.5
720x400 VGA-400-TEXT 900× 720 31.469 70.087 28.322
800x600 SVGA 1024× 800 35.156 56.25 36
800x600 VESA-600-60Hz 1056× 800 37.879 60.317 40
800x600 VESA-600-75Hz 1056× 800 46.875 75 49.5
1024x768 XGA 1344×1024 48.363 60.004 65
1024x768 VESA-768-75Hz 1312×1024 60.023 75.029 78.75
1152x870 VESA-870-75Hz 1456×1152 68.7 75 100
1280x1024 SXGA 1688×1280 63.981 60.020 108
1280x1024 VESA-1024-75Hz 1688×1280 79.976 75.025 135
1600x1200 VESA-1200-60Hz 2160×1600 75 60 162
1680x1050 VESA-1050-60Hz 2240×1680 65.29 59.954 146.249
4.4 Power Supply Characteristics
Input Voltage Range: 90 Vac to 265Vac, single phase
Input Frequency Range: 47Hz to 63Hz
Max Input AC Current: 1.5Arms at 90Vrms Low Mains, 0.75Arms at 265Vrms High mains
Inrush Current: At Maximum Load and 25℃(at Cold Start condition), 25A Peak Maximum at 120Vac, 50A Peak
Maximum at 230Vac.z
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5. Panel Specification
5.1 Panel Feature
LM201W01 is a Color Active Matrix Liquid Crystal Display with an integral Cold Cathode Fluorescent Lamp (CCFL)
backlight system. The matrix employs a-Si Thin Film Transistor as the active element. It is a transmissive type display
operating in the normally black mode. It has a 20.1 inch diagonally measured active display area with WSXGA+
resolution (1050 vertical by 1680 horizontal pixel array)
Each pixel is divided into Red, Green and Blue sub-pixels or dots which are arranged in vertical stripes. Gray scale or
the brightness of the sub-pixel color is determined with a 8-bit gray scale signal for each dot, thus, presenting a palette
of more than 16,7M (True) colors.
It has been designed to apply the 8Bit 2 port LVDS interface.
It is intended to support displays where high brightness, super wide viewing angle, high color saturation, and high color
are important.
5.2 Displays Characteristics
Active Screen Size 20.1 inches(511.133mm) diagonal (Aspect ratio 16:10)
Outline Dimension 459.4(H) x 296.4 (V) x 22.8(D) mm (Typ.)
Pixel Pitch 0.258mm x 0.258mm
Pixel Format 1680 horizontal By 1050 vertical Pixels RGB strip arrangement
Color Depth 8bit, 16,7 M colors
Luminance, White 300cd/m2 (Center 1 point, Typ.)
Viewing Angle (CR>10) Viewing Angle Free ( R/L 178(Typ.), U/D 178(Typ) )
Power Consumption Total 37.51 Watt(Typ.) (4.54 Watt @ VLCD, 32.97 Watt@300cd/[LAMP=7mA])
Weight 2950 g (Typ.)
Display Operating Mode Transmissive mode, normally black
Surface Treatment Hard coating(3H) & Anti-glare (Haze 25%) treatment of the front polarizer
5.3 Optical Characteristics
Ta=25℃, VLCD=12.0V, fV=60Hz, DCLK=119MHz, IBL=7mA
Values
Parameter Symbol
Min Typ Max
Units
Contrast Ratio CR 500 800 -
Surface Luminance, 1pts LWH 250 300 - cd/m2
Luminance Variation δWHITE 70 - - %
Rise Time TrR - 5 10 ms
Decay Time TrD- 7 14 ms
TGTG_AVR - TBD - ms
Response
Time Gray to
Gray TGTG_MAX - TBD - ms
Rx 0.640
RED
Ry 0.340
Gx 0.295
Color
Coordinates
[CIE 1931]
GREEN
Gy
Typ
-0.03
0.610
Typ
-0.03
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Lenovo LXM-WL20AH
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Bx 0.145
BLUE
By 0.070
Wx 0.313
WHITE
Wy 0.329
Horizontal θCST_H - 176 - degree
Color shift
Vertical θCST_V - 176 -
Viewing Angle (CR>10)
Horizontal θH170 178 -
General
Vertical θV170 178 -
degree
Horizontal θGMA_H - 176 -
Effective
Vertical θGMA_V 176 -
degree
Gray Scale 2.2
5.4 Electrical Characteristics
Values
Parameter Symbol
Min Typ Max
Units
Power Supply Input Voltage VLCD 11.4 12.0 12.6 Vdc
- 378 435 mA
Power Supply Input Current ILCD
- 521 599 mA
Power Consumption PLCD - 4.54 5.23 Watt
Rush Current IRUSH - - 3 A
Note:
1. The specified current and power consumption are under the VLCD=12.0V, 25 ±2°C, fV=60Hz condition whereas
mosaic pattern (8 x 6) is displayed and fVis the frame frequency.
2. The current is specified at the maximum current pattern.
3. The duration of rush current is about 2ms and rising time of power Input is 1ms (min.).
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6. Block Diagram
6.1 Software Flow Chart
1
2
N
Y
5
Y
N
10
Y
N
12
Y
N
7
Y
N
6
4
3
8
9
14
11
13
Y
N
15
Y
N
16
17
19
Y
N
18
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Lenovo LXM-WL20AH
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1) MCU initializes.
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 initializes.
10) In standby mode?
11) Update the lifetime of back light.
12) Check the analog port, are they’re any signals coming?
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?
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6.2 Exploded Viewing
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6.3 Electrical Block Diagram
Scalar Board Block Diagram
LCD Interface
Scalar
MST9251A-LF-165 PQFP-20
(Include ADC, OSD)
MCU
NT68P631ALG PLCC-44
U351
OSD Control
Interface
(Keypad)
D-Sub Connector
CN202
EEPROM
M24C02
U202
RXD
TXD RGB
DB15_SDA
DB15_SCL
Crystal
X401
14.31818 MHz
Crystal
X351
12MHz H Sync
V Sync
DVI Connector
CN201
EEPROM
M24C02
U201
DVI24_SDA
DVI24_SCL
EEPROM
AT24C16
U353
EPR_SDA
EPR_SCL
DVI Video
Signals
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Lenovo LXM-WL20AH
- 16 -
7. Schematic
7.1 Main Board
D219
BAV99
3
1 2
U201
M24C02WMN6
4
8 1
2
3
7
6
5GND
VCC A0
A1
A2
WP
SCL
SDA
GIN + 4
RX0+
D211
BAV99
3
1 2
DDC_SDA
R209
10K 1/16W
C214
0.1uF/16V
RX2- 4
R210
22K 1/16W
+5V_ESD
B
DDC_SDA
+5V_ESD
RX1-
RXC-
R234
22K 1/16W
+5V_ESD
+5V_ESD
D210
BAV99
3
1 2
VGA_CON
DDC_SCL-D
GIN - 4
+5V_ESD
HSI
R
R242
2.2K 1/16W
D227
BAV99
3
1 2
RX0- 4
R238 100 1/16W
L201
120 OHM
RXC+
+5V_ESD
+5V_ESD
+5V_ESD
RIN+ 4
R261 0 1/16W
C221 0.047uF
RXC+ 4
DDC_SCL
R229
10K 1/16W
C238 0.1uF/16V
R203
1K 1/16W
D221
BAV99
3
1 2
RXC-
R235 100 1/16W
R231 68 1/16W
R207
10K 1/16W
R260 0 1/16W
PC5V
DDC_SCL-D
DVI5V
R214
100 1/16W
RX1-
R211 100 1/16W
R251 68 1/16W
R255 1K 1/16W
R239 100 1/16W
RX2+ 4
+5V_ESD
+5V
C237 0.1uF/ 16V
R259
22K 1/16W
R248
75 1/16W
R243
75 1/16W
R256
10K 1/16W
R247 470 1/16W
D201
BAS32L
DVI_5V
R205
10K 1/16W
C229
0.1uF/16V
D203
BAS32L
C219
0.1uF/16V
C234 0.1uF/ 16V
R230
10K 1/16W
R213
100 1/16W
D217
BAV99
3
1 2
SOG 4
R253
75 1/16W
DDC_SCL
RXC+
C222 0.001uF
CN202
DB15
1
6
2
7
3
8
4
9
5
11
12
13
14
15
10
1716
D222
BAV99
3
1 2
R241
2.2K 1/16W
R201
10K 1/16W
R
C225 0.047uF
D224
BAV99
3
1 2
R236 100 1/16W
D220
BAV99
3
1 2
R244 33 1/16W
L202
120 OHM
D213
BAV99
3
1 2
DDC_WP6
+5V_ESD
C239 0.1uF/ 16V
+5V_ESD
R208
10K 1/16W
+5V_ESD
GVSI
C205
0.1uF/16V
C224 0.047uF
VGA_CABLE 6
DDC_SDA-D
C231 0.1uF/ 16V
DDC_SCL
C203330pF
RX2-
C217
33pF
DDC_SCL-D
C202
0.1uF/16V
BIN + 4
DVI_SDA
6
+5V_ESD
VSI
RX1+
+5V
+5V
D214
BAV99
3
1 2
R237
100 1/16W
DVI_5V
C216330pFC204330pF
C218
220pF
DDC_WP6
+5V_ESD
C230 0.1uF/ 16V
HSI
D212
BAV99
3
1 2
BIN - 4
C227 0.047uF
R233
10K 1/16W
D223
BAV99
3
1 2
C233 0.1uF/ 16V
DVI_SCL6
R202 1K 1/16W
D226
BAV99
3
1 2
+5V
VGA_CON
RX2-
U202
M24C02WMN6
4
8 1
2
3
7
6
5GND
VCC A0
A1
A2
WP
SCL
SDA
RX1+
D225
BAV99
3
1 2
C235 0.1uF/ 16V
+5V_ESD
G
D204
BAS32L
C223
NC
R240
100 1/16W
DDC_SDA-D
C228 0.047uF
VGA_SDA
6
+5V_ESD
PC5V
D216
BAV99
3
1 2
VGA_SCL6
RX1- 4
C232 0.1uF/16V
R249 33 1/16W
HS_RGB 4
C201
0.1uF/16V
RX2+
C241 0.047uF
RX2+
B
C226
NC
D215
BAV99
3
1 2
CN201
JACK
1
2
3
4
5
6
7
8
25
28
9
10
11
12
13
14
15
16
26
29
17
18
19
20
21
22
23
24
27
30
M1 M2
DAT2-
DAT2+
2/4shield
DAT4-
DAT4+
DDC SCL
DDC SDA
VSYNC
R
HSYNC
DAT1-
DAT1+
1/3shield
DAT3-
DAT3+
+5V
SYNC GND
HPD
G
RGB GND
DAT0-
DAT0+
0/5shield
DAT5-
DAT5+
clk shield
clk+
clk-
B
RGB GND
GND GND
C215330pF
+5V_ESD
DVI_CABLE 6
DDC_SDA
RX0+ 4
DDC_SDA-D
R254 68 1/16W
R212 100 1/16W
C220
NC
RX0+
D202
BAS32L
+5V
VS_RGB 4
RIN- 4
RXC- 4
RX0-
R262 0 1/16W
RX1+ 4
R252 33 1/16W
C236 0.1uF/ 16V
RX0-
+5V_ESD
L204 150 OHM BEAD
R258
22K 1/16W
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Lenovo LXM-WL20AH
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R358
10K 1/16W
C353 22pF
HWRESET 4
PANEL_IDX
VIDEO_CE
R361 10K 1/16W
R372
10K 1/16W
VIDEO_CE2
24C16_WP4
VCPU DDC_WP 4
LED_R
VOLUME
R366
10K 1/16W
24C16_WP
K_PWR8
C351
0.1uF/16V
R369 100 1/16W
INT
LED_G 4
R377 NC
R365
10K 1/16W
VCPU
AD2
R370
10K 1/16W
U351
NT68F631ALG
21
20
14
15
16
17
2
3
4
5
6
7
8
943
42
41
40
39
38
37
36
24
25
26
27
28
29
30
31
19
18
13
11
22 44
23
34
1
35
10
12
OSCI
OSCO
PB2/ADC2/INTE0
PB3/ADC3/INTE1
P34/T0
P35/T1
PA0/PWM2
PA1/PWM3
PA2/PWM4
PA3/PWM5
PA4*/PWM6*
PA5*/PWM7*
PA6*/PWM8*
PA7*/PWM9* PC0*
PC1*
PC2
PC3/PWM0
PC4/PWM1
PC5
PC6
PC7
PB1/ADC1
PB4*/SCL0*
PB5*/SDA0*
PB6*/SCL1*
PB7*/SDA1*
PD5
PD4
PD3
PE1
PE0
P31/TXD
P30/RXD
GND VCC
PB0/ADC0
PD2
PD0
PD1
RSTB
PD6
LED_R 4
R355/NC 100 1/16W
RDZ 4
R364
10K 1/16W
R360
10K 1/16W
+3.3V
AUDIO_IN_SEL
WRZ 4
R375 100 1/16W
R356/NC
NC/10K 1/16W
R351
1M 1/16W
R368 100 1/16W
R374 100 1/16W
R357/NC 220 1/16W
L351
120 OHM
R354 100 1/16W
VGA_CABLE 2
C354 22pF
AUDIO_PW 2
KEY 1
BL_CONTROL
DVI_CABLE2
PANEL_PWR2
VCPU
IIC_SCL3
RDZ
VCPU
DDC_WP
R352 100 1/16W
R371
10K 1/16W
R376 100 1/16W
C355 100pF
K_PWR
VOLUME8
DVI_SCL 2
ALE
C352/NC
NC\0.1uF/16V
PANEL_IDX8BL_CONTROL2
TXD
PANEL_PWR
VGA_CABLE
R353 10K 1/16W
IIC_SDA
MUTE
RXD
R359 100 1/16W
ALE 4
AUDIO_IN_SEL 4
U353
M24C16-MN6T
1
2
3
4 5
6
7
8
A0
A1
A2
VSS SI
SCK
WP
VCC
X3 5 1
12.000MHz
WRZ
44
U351-1
SOCKET
VCPU
VCC_DUG
AD3
VCPU
AD1
DVI_CABLE
VGA_SCL 2
INT4
C356
0.1uF/16V
C358 100pF
CN352
1
2
3
4
C359
10uF/16V
AD0
R373 100 1/16W
R367
10K 1/16W
VGA_SDA 2
AD[0..3] 4
VCPU
KEY2
MU TE 4
AD [0 . . 3 ]
AUDIO_PW
C360
0.1uF/16V KEY 1 4
24C16_WP
HWRESET
DVI_SDA 2
KEY28
LED_G
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Lenovo LXM-WL20AH
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MDATA19
RX1+
VS_RGB1
TXE1+
HWRESET
MMC-136mV
GIN1+
AR7
DQM1
TXE1+
C434
0.1uF /16V
FSCLK+, FSCLK- should be route d
like a differentail pair
RIN+
TXOC -
AR[0..11]7
DEC1VS
AR3
TXO0+
TXOC +
R408 22 1/16W
GIN 1+
RX0+
DEC1V7
C417
0.1uF /16V
RX1-2
L404 120 OHM
C448
33pF/ C0603
MDATA23
C445
0.1uF / 16V
+3. 3AVDD
+3.3AVDDA
U405 MM1117ST33
1 2 3
ADJ/GND Vout Vin
RDZ6
182mV
+3.3AVDD_D
AR7
DEC1V5
719mA
TXOC +
TXE2+
+1.8VD D
DEC1V3
C421
10uF/ 16V
R416
100 1/16W
+3. 3AVD D_D
TXO2-
TXE3+
TXEC +
TXO2+
C449
10uF/ 16V
GND
DQS1
BRIGHTNESS
C420
10uF/ 16V
L407 120 OHM
GIN+
TXO1-
C454
0.01uF
682mA-440mV
MDATA8
C455
10uF/ 16V
+1.8VDDC1
RIN-
AR2
MDATA6
TXEC +
TXE3+
C450
0.1uF /16V
+2. 5MVD D
RIN-
MDATA21
TXO3-
MDATA11
+2. 5MVD D
SOG1
MDATA24
MDATA20
RX0+2
C409
10uF/16V
C414
0.1uF /16V
+3. 3D V
C410
0.1uF /16V
+3.3AVDD _P2
TXO3+
BIN1-
MDATA1
TXE2-
C428
0.1uF /16V
ALE
GIN -
+3.3AVDD
RX2+
TXE1-
MDATA5
TXO1-
RX1-
RAS
L413 120 OHM
+5V
RIN1+
HS_RGB1
BIN1+2
MDATA16
RIN1+
DQS0
RIN+
AR11
R417
NC
C404
0.1uF/ 16V
DEC1V7
TXE0+
TXO3+
C406
0.1uF /16V
L402 120 OHM
R410 22 1/16W
+2. 5MVD D
AR6
DEC1V6
C452
0.1uF /16V
C426
0.1uF /16V
TXE0-
R412 22 1/16W
SOG12
TC LK
U401
MST9251A-LF-165
168
167
166
165
164
161
160
180
179
178
177
176
175
174
131
205
44
43
42
41
40
39
38
37
18
15
14
11
9
8
6
5
26
25
24
23
22
21
20
19
1
208
2
3
207
36
33
32
31
30
29
28
27
45
46
47
48
80
49
51
54
55
10 34 173 17 195 125 109 86
56
204 113 156
58
59
60
61
16 35
12
50
57
157 64 183 184 7 132 155 172
158
169
185 102 4
87
170
171
108 159 140 13
62
67
68
69
70
71
72
73
74
75
76
78
201
135
136
137
138
141
142
143
144
145
146
147
148
149
150
151
152
133
105
107
110
111
112
115
116
117
118
119
120
121
122
123
124
127
128
129
65
181
186
187
66 63
202
203
163
52
53
103
77
81
82
83
84
85
154
114
88
89
90
91
92
93
126
139
94
95
96
97
98
99
100
101
106
104
130
134
153
200
79
206
162
194
182 188 189 190 191 192 193 196 197 198 199
LVA1P
LVA2M
LVA2P
LVACKM
LVACKP
LVA3M
LVA3P
LVB1P
LVB2M
LVB2P
LVBCKM
LVBCKP
LVB3M
LVB3P
VDDC
GND
VI_DATA[11]
VI_DATA[10]
VI_DATA[9]
VI_DATA[8]
REFM
REFP
RMID
VSY NC0
HSYNC1
DDCD_CK
DDCD_DA
REXT
DVI_CK-
DVI_CK+
DVI_B-
DVI_B+
RIN1M
RIN1
GIN 1M
GIN 1
SOGIN 1
BIN1M
BIN1
VSY NC1
GND
DVI_R-
DVI_G+
DVI_G-
DVI_R+
HSYNC0
RIN0
RIN0M
SOGIN 0
GIN 0
GIN 0M
BIN0
BIN0M
VI_DATA[12]
VI_DATA[13]
VI_DATA[14]
VI_DATA[15]
GND
AVDD_APLL
GPIO[5]/VHS
VI_DATA[0]
VI_DATA[1]
AVDD_DVI
AVDD_ADC
VDDC
AVDD_ADC
VDDC
VDDM
AVDD _PLL2
VDDM
VI_DATA[2]
AVDD_MPLL
VDDM
VDDC
VI_DATA[4]
VI_DATA[5]
VI_DATA[6]
VI_DATA[7]
GND GND
AVDD _PLL
GND
VI_DATA[3]
GND GND GND GND GND GND GND GND
BYPASS
LVA1M
VDDC
VDDM
AVDD_DVI
GND
LVA0P
LVA0M
GND GND GND GND
VCTRL
HWRESET
INT
ALE
RDZ
WRZ
DBUS[0]
DBUS[1]
DBUS[2]
DBUS[3]
GPIO[3]/VDE
GPIO[1]/FIELD
PWM1
MDATA[15]
MDATA[14]
MDATA[13]
MDATA[12]
MDATA[11]
MDATA[10]
MDATA[9]
MDATA[8]
MDATA[7]
MDATA[6]
MDATA[5]
MDATA[4]
MDATA[3]
MDATA[2]
MDATA[1]
MDATA[0]
DQM[0]
MC LK E
MCLK
BADR[1]
BADR[0]
RASZ
CASZ
WEZ
MADR[0]
MADR[1]
MADR[2]
MADR[3]
MADR[4]
MADR[5]
MADR[6]
MADR[7]
MADR[8]
MADR[9]
MADR[10]
GND
LVB1M
LVB0P
LVB0M
VDD P
VDDC
XO U T
XI N
GND
GPIO[4]/VCLK2
VI_CK
GND
GPIO[2]/VVS
DQS[3]
MDATA[31]
MDATA[30]
MDATA[29]
MDATA[28]
VDDM
GND
MDATA[27]
MDATA[26]
MDATA[25]
MDATA[24]
MDATA[23]
MDATA[22]
GND
VDDM
MDATA[21]
MDATA[20]
MDATA[19]
MDATA[18]
MDATA[17]
MDATA[16]
DQS[2]
DQM[1]
MC LK Z
MVR E F
MADR[11]
DQS[1]
DQS[0]
PWM0
VDDC
GND
VDD P
GND
VDD P
NC NC NC NC NC NC NC NC NC NC
+3. 3AVDD
RX2-
C416
0.1uF /16V
HS_RGB2
RIN1-
INT
MDATA17
AR0
DEC1V6
TXE2-
RX2-2
+3.3VMST
BIN-2
RXC-2
+3.3AVDD_P
DQM0 7
C438
0.1uF/ 16V
L408/NC
NC /120 OHM
C407
10uF/16V
CAS 7
CKE 7
R415 22 1/16W
L405 120 OHM
RXC+2
MC LK +
VS_RGB1
C441
0.1uF /16V
U404
3 2
1
VI VO
GND
BRIGHTNESS8
+3.3AVDD_A
TXO3-
AR2
MDATA9
MDATA31
MDATA2
TXO2+
AD[0..3]6
BIN1+
DEC1HS
TXE3-
TXE0-
RXC-
TXO0-
MDATA18
AR8
MVR E F
HS_RGB12
PANEL_VCC
BIN1-
AD1
RX0-
+
C413
47uF/16V
RIN1+2
+3. 3D V
+1.8VDD
MDATA22
DEC1HS3
AR1
AD0
DEC1V5
X401
14.31818MHz
ALE6
AR4
MDATA13
C402
0.1uF /16V
+3.3VDD_M
SOG
SBA0
SBA1 7
MDATA15
MDATA25
AD2
DQM0
C444 0. 1uF/16V
C447
33pF/C0603
DEC1VS3
DQS0 7
+5V
R401
390 1/16W
R402 100 1/16W
CKE
TXO0+
TXEC -
L410
120 OHM
AR4
MDATA7
MDATA14
C4460.1uF /16V
RX0-2
+1.8VDD
AR10
DEC1V0
L401 120 OHM
MDATA27
MDATA10
XTA L
TXE1-
R413
1K 1/16W
C436
10uF/16V
R409 22 1/16W
RIN+2
WE 7
HWRESET
MDATA30
BIN1+
VS_RGB
RIN1-
C440
0.1uF / 16V
D402
PS102R
WRZ6
MDATA3
+3. 3VMST
SBA1
DEC1V4
L412
120 OHM
+3.3AVDD
RXC+
TXO2-
DEC1V1
BIN+2
+3. 3AVDD
C431
0.1uF /16V
DEC1CLK3
VS_RGB2
R414
1K 1/16W
R405
10K 1/16W
TP9 1
+3.3AVDD_P2
AR5
SOG2
DEC1CLK
DEC1V0
C403
10uF/16V
C430
0.1uF /16V
C411
10uF/16V
R411 22 1/16W
TXE2+
C429
0.1uF /16V
GIN1+2
DQM1 7
SOG1
CN402
CONN
2
4
6
8
10
12
14
16
18
20
22
24
26
28
30
1
3
5
7
9
11
13
15
17
19
21
23
25
27
29
DQS2 7
+2.5VM
MC LK -
BIN1-2
HS_RGB1
BIN+
GIN +
MDATA4
C415
10uF/ 16V
C408
0.1uF /16V
+3.3AVDD_D
DQS3
MCLK + 7
MDATA29
L406 120 OHM INT6
WE
AR9
TXE0+
AD2
GIN -2
710mA-MMC
AR8
C424
0.1uF /16V
C425
0.1uF /16V
C427
0.1uF /16V
AD[0..3]
TXE3-
RIN-2
MVR E F
GIN-
BIN+
AD0
C422
0.1uF /16V
C435
0.1uF /16V
SBA0 7
+1.8VD D C 2
C432
10uF/ 16V
GIN+2
DEC1V[0..7]3
RAS 7
+3.3AVDD
HS_RGB
AR3
TXO0-
L409
120 OHM
C453
0.1uF /16V
VS_RGB12
DEC1V1
C405
10uF/16V
C443 0. 1uF/16V
C433
10uF/ 16V
GIN 1-2
RIN1-2
530mA-MMC-188mV
D401
PS102R
MDATA[0.. 31] 7
MCLK - 7
VGA CHANNEL 0
AR5
WRZ
TXEC -
C419
0.1uF /16V
INT
TXO1+
C423
10uF/ 16V
RX2+2
AD3
+1.8VDDC2
BIN-
HS_RGB
GIN1-
AR0
SOG
DEC1V4
C412
0.1uF /16V
C442
0.1uF /16V
+2. 5MVD D
VS_RGB
MDATA12
MDATA28
R403 22 1/16W
72c
AR10
ALE
AD3
MDATA0
MVR E F
R418
NC
VGA CHANNEL1
MDATA[0..31]
C437
0.1uF /16V
C456
10uF/16V
+3.3VDD_M
C451
0.1uF /16V
RX1+2
AR6
BIN-
RDZ
L403 120 OHM
+3. 3VMST
CAS
+1.8VDD C1
+5V
MDATA26
DEC1V2
C439
0.1uF /16V
+
C401
47uF/ 16V
DQS3 7
AD1
HWRESET6
177mV
+3.3AVDD_P
DEC1V2
TXOC-
VIDEO INPUT
TXO1+
AR1
GIN 1-
C457
0.1uF /16V
DQS1 7
AR11
DQS2
U403
MMC 1085D18
1 2 3
ADJ/GND OUT PUT INPUT
+1.8V_VIDEO
AR9
DEC1V3
http://www.wjel.net

Lenovo LXM-WL20AH
- 19 -
R510
10K 1/16W
C502
0.1uF/16V
C508/NC
0.1uF/16V
R507
100 1/16W
+3.3V
R515
10K 1/16W
K_PWR
TO POWER BOARD
R520
22K 1/16W
AUDIO_IN_SEL
L502
120 OHM
PANEL_VCC
C512
0.1uF/16V
AUDIO_PW
PANEL_IDX
+
C521 47uF/16V
C520
0.047uF
C516
0.1uF/16V
CN502
Conn
1
2
3
4
5
6
7
8
9
10
11
12
13
R514
10K 1/16W
BL_CONTROL
R516
10K 1/16W
Q502
MMBT3906
3 2
1
+18V
MUTE
PANEL_PWR
BL_CONTROL
C505
0.1uF/16V
LED_R
+18V
R509
220 1/16W
CN501
conn
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
C507/NC
0.1uF/16V
R528
0 1/16W
L501
120 OHM
C522/NC
0.1uF/16V
LED_R
C524
10uF/16V
C517
0.1uF/16V
KEY2
R513/NC
10K 1/16W
+5V
R506
100 1/16W
BRIGHTNESS
R503 47 1/16W
Q501
MMBT3906
3 2
1
+5V
R521/NC
100 1/16W
R502 47 1/16W
KEY1
BRIGHTNESS
AUDIO_PW
+
C509/NC
47uF/16V
R527
NC
C519
0.1uF/16V
PANEL_PWR
LED_G
AUDIO_IN_SEL
C514/NC
0.1uF/16V
VOLUME
+ C503
47uF/16V
R519
10K 1/16W
C526
0.1uF/16V LED_G
R530
0 1/16W
C510
0.1uF/16V
R508 100 1/16W
+3. 3V
C513/NC NC/0.1uF/16V
R525
10K 1/16W
MUTE
C525
10uF/16V
C501
0.1uF/16V
R526
NC
R511 100 1/16W
L503/NC
120 OHM
R505/NC
100 1/16W
C511
0.1uF/16V
K_PWR
+ C506
47uF/16V
C518
0.1uF/16V
VOLUME
R517
100K 1/16W
R524/NC
NC/100 1/16W
+12V
51.6mV
+3. 3V
PANEL_IDX
C515
0.1uF/16V
+5V
KEY1
R518
10K 1/16W
C523/NC
NC/0.1uF/16V
Q503
MUN2211TIG
KEY2
+3.3V
U505 MM1117ST33
1 2 3
ADJ/GND Vout Vin
+12V
R529
NC
R512
10K 1/16W
C504
0.1uF/16V
R504/NC 220 1/16W
R501 47 1/16W
+12V
Q504 SI5441DC
1
2
3
4 5
6
7
8
D
D
D
GS
D
D
D
http://www.wjel.net

Lenovo LXM-WL20AH
- 20 -
L301
120 OHM C309
0.1uF/16V
MDATA[0..31]5
RP21 22 1/16W
1
2
3
4
8
7
6
5
R323 22 1/16W
MDATA18
MDATA15
DQS2
MD ATA12
+2.5V_DMQ
DATA1
DATA31
MDATA26
R313 22 1/16W
MDATA14
MDATA31
MCLK-5
R309 22 1/16W
R303
150 1/16W
RP16 22 1/16W
1
2
3
4
8
7
6
5
DQS25
DATA0
MDATA21
C333
10uF/16V
DATA15
DQS05DQS0
CK# MDATA1
DATA27
+2.5VDDR
CK
DATA13
MDATA0
DATA25
MDATA[0..31]
C317
0.1uF/16V
CAS5
AR11
AR2
MDATA3MD ATA6
DATA21
C315
0.1uF/16V
DQM1
R308 22 1/16W
DATA12
MDATA9
R312 22 1/16W
C325
0.1uF/16V
274mV
DATA3
DATA16
DQM0
AR0
MD ATA1
MDATA29
R301
1K 1/16W
DATA13
MD ATA25
DQS1
CK#
DATA1
AR5
DATA10
C316
0.1uF/16V
MD ATA7
DATA4
DATA6
C308
0.1uF/16V
DQS3
L302
120 OHM
AR6
DATA11
MD ATA29
MDATA22
MD ATA27
AR7
CK
C320
0.1uF/16V
C321
0.1uF/16V
AR[0..11]5
MDATA8
MC LK+5
DATA20
DATA18
MDATA8
MD ATA19
MDATA16
+2.5V_DMQ
DQS35
DATA6
MD ATA11
MD ATA4
C304
0.1uF/16V
C313
0.1uF/16V
MD ATA10
+ C303
22uF/16V
AR9
C306
0.1uF/16V
DATA23
DATA0
MDATA12
MDATA5
MD ATA28
MD ATA3
DATA22
AR1
+2.5V_DMQ
MD ATA20
DATA12
MD ATA0
R310 22 1/16W
C319
0.1uF/16V
SBA15
DATA17
DATA18
C302
0.1uF/16V
DATA25
C318
0.1uF/16V
DQS15
AR3
WE5
DATA7
DQM015
MDATA23
MDATA20
C332
10uF/16V
C324
0.1uF/16V
MD ATA18
DATA14
C307
0.1uF/16V
DATA2
DATA29
C311
0.1uF/16V
MDATA10
DATA3
FSVREF
+2.5VDDR
MDATA19
DATA17
MD ATA22
MDATA17
DATA19
C323
0.1uF/16V
AR4
MD ATA17
DATA30
C310
0.1uF/16V
MD ATA31
DATA11
DATA23
C329
0.1uF/16V
DATA19
MD ATA13
C322
0.1uF/16V
MDATA24
DATA4
RP18 22 1/16W
1
2
3
4
8
7
6
5
C334
0.1uF/16V
RAS5
MDATA4
MD ATA5
RP17 22 1/16W
1
2
3
4
8
7
6
5
R306 22 1/16W
FSVREF
MD ATA16
DATA9
MDATA28
U301
EM6A9320BI-5M
M4
M5
L5
M6
M7
L8
M8
M9
M10
L7
K5
L6
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
A1
G12
G1
A12
A2
G11
G2
A11
M3
L4
L10
L11
M11
M1
L1
K1
K2
M12 C6 C7 D3 D10 K3 K6 K7 K10 B2 B4 B6 B7 B9 B11 D2 D11 E3 E10 F3 F10 H3 H10 J3 J10
D4 D6 D7 D9 E5 E6 E7 E8 F5 F6 F7 F8 G5 G6 G7 G8 H5 H6 H7 H8 J5 J6 J7 J8 K4 K9
A3
A10
C3
C4
C5
C8
C9
C10
D5
D8
E4
E9
F4
F9
G4
G9
H4
H9
J4
J9
B3
B10
G3
G10
K8
K11
K12
L2
L3
L9
L12
M2
A0
A1
A2
A3
A4
A5
A6
A7
A8/AP
A9
A10
A11
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
DQS0
DQS1
DQS2
DQS3
DM0
DM1
DM2
DM3
BA0
BA1
CK
CK#
CKE
CS#
RAS#
CAS#
WE#
VREF
VDD VDD VDD VDD VDD VDD VDD VDD
VDDQ VDDQ VDDQ VDDQ VDDQ VDDQ VDDQ VDDQ VDDQ VDDQ VDDQ VDDQ VDDQ VDDQ VDDQ VDDQ
VSS VSS VSS VSS VSS VSS VSS VSS VSS VSS VSS VSS VSS VSS VSS VSS VSS VSS VSS VSS VSS VSS VSS VSS VSS VSS
VSSQ
VSSQ
VSSQ
VSSQ
VSSQ
VSSQ
VSSQ
VSSQ
VSSQ
VSSQ
VSSQ
VSSQ
VSSQ
VSSQ
VSSQ
VSSQ
VSSQ
VSSQ
VSSQ
VSSQ
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
C314
0.1uF/16V
DATA28 MD ATA14
U302
3 2
1
VI VO
GND
+2.5V_DMC
MDATA6
MDATA25
R305 22 1/16W
SBA1
DATA10
DATA27
DATA24
+2.5V_DMQ
R302
1K 1/16W
MD ATA9
C305
0.1uF/16V
DATA20
AR8
DATA30
AR10
C330
0.01uF
C327
0.1uF/16V
DATA16
DATA8
MD ATA23
RP15 22 1/16W
1
2
3
4
8
7
6
5
DATA24
CKE5
MD ATA24
DATA29
C326
0.1uF/16V
SBA05
+5V
+ C312
22uF/16V
DATA26
MD ATA21
RP19 22 1/16W
1
2
3
4
8
7
6
5
MMC-162mV
+2.5V_DMC
DATA21
DATA8
MDATA13
R307 22 1/16W
C328
0.1uF/16V
DATA9
+2.5VDDR
DATA7
DQM05
MDATA11
R304 22 1/16W
R322 22 1/16W
FSVREF
DATA26
MDATA2
RP20 22 1/16W
1
2
3
4
8
7
6
5
DATA5
SBA0
DATA31
DATA2
DATA5
RP14 22 1/16W
1
2
3
4
8
7
6
5
DATA22
MDATA7
MDATA27
MD ATA30
DATA14
MD ATA26
R311 22 1/16W
MD ATA2
DATA15
MDATA30
MD ATA15
DATA28
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