AOC LM722 User manual

LM722
Page 1 of 48
17” LCD Monitor
LM722
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 DISCLAIMS RE LIABILITY FOR
CHANGES, ERRORS OR OMISSIONS.
SERVICE MANUAL

LM722
Page 2 of 48
Content List
CONTENT LIST.............................................................................................................................. 2
Revision List ……………………………..…………………………………………………………….…..3
1. MONITOR SPECIFICATIONS .................................................................................................... 5
2. LCD MONITOR DESCRIPTION ................................................................................................. 5
3. OPERATING INSTRUCTIONS................................................................................................... 6
3.1 GENERAL INSTRUCTIONS .................................................................................................................6
3.2 FRONT PANEL CONTROL ...................................................................................................................6
3.3 ADJUSTING THE PICTURE .................................................................................................................6
4. INPUT/OUTPUT SPECIFICATION............................................................................................. 8
4.1 INPUT SIGNAL CONNECTOR .....................................................................................................................8
4.2 FACTORY PRESET DISPLAY MODES..........................................................................................................8
4.3 POWER SUPPLY REQUIREMENT ...............................................................................................................9
4.4 PANEL SPECIFICATION.......................................................................................................................9
4.4.1 Display Characteristics .................................................................................................................................... 9
4.4.2 Optical Specification....................................................................................................................................... 10
4.4.3 ELECTRICAL SPECIFICATIONS.................................................................................................................. 10
5. BLOCK DIAGRAM................................................................................................................... 10
5.1 MONITOR EXPLORED.............................................................................................................................10
5.2 Software flowing Chart ...........................................................................................................................11
5.2 ELECTRICAL BLOCK DIAGRAM................................................................................................................13
5.2.1 Main Board..................................................................................................................................................... 13
5.2.2 Inverter/Power Board..................................................................................................................................... 14
6. SCHEMATIC............................................................................................................................. 16
6.1 MAIN BOARD.........................................................................................................................................16
6.2 POWER BOARD .....................................................................................................................................21
6.3 KEY BOARD...........................................................................................................................................23
6.4 AUDIO BOARD .......................................................................................................................................24
7. LAYOUT ................................................................................................................................... 25
7.1 MAIN BOARD.........................................................................................................................................25
7.2 AUDIO BOARD .......................................................................................................................................25
7.3 POWER BOARD .....................................................................................................................................26
8. MAINTAINABILITY................................................................................................................... 27
8.1 EQUIPMENTS AND TOOLS REQUIREMENT................................................................................................27
8.2 TROUBLE SHOOTING .............................................................................................................................28
8.2.1 KEYPAD BOARD........................................................................................................................................... 31

LM722
Page 3 of 48
8.2.2 POWER/INVERTER BOARD ........................................................................................................................ 32
9. WHITE- BALANCE, LUMINANCE ADJUSTMENT.................................................................. 34
10. EDID ....................................................................................................................................... 35
11. BOM LIST............................................................................................................................... 36

LM722
Page 4 of 48
Revision List
Revision Date Modification
A00 Mar-24-2004

LM722
Page 5 of 48
1. MONITOR SPECIFICATIONS
 43.2 cm (17”) a-si TFTActive matrix LCD panel, 0.264mm pixel pitch.
 Microprocessor controlled scan technology
 17 factory presets
 Vertical refresh rate 55Hz to 75 Hz
 Horizontal frequency 30kHz to 80kHz
 Resolutions: 640 x 480 up to 1280 x 1024
 Universal power supply designed for worldwide application
 CE mark
 TCO99 mark
 VESA DPMS compliant
 VESA DDC2B compliant
2. LCD MONITOR DESCRIPTION
The LCD MONITOR will contain a main board, a power board, a keypad board and anAudio board which house
the flat panel control logic, brightness control logic and DDC.
The power board will provideAC to DC Inverter voltage to drive the backlight of panel and the main board chips
each voltage.
Power board
(
Include: ada
p
ter, inverter
)
Flat Panel and
CCFL backlight
Main Board
Keyboard
RS232 Connector
For white balance
adjustment in
factory mode
HOST Computer
CCFT Drive.
AC-IN
100V-240V Video signal, DDC
Monitor Block Diagram
Audio board

LM722
Page 6 of 48
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 position. The power indicator will light up.
3.2 FRONT PANEL CONTROL
3.3 ADJUSTING THE PICTURE
The description for control function:
Main Menu
Item
Main Menu
Icon Sub Menu Item Sub Menu Icon Description
Contrast Contrast from Digital-register
NO. Name Within OSD Without OSD
1 Auto 1. Exit Sub menu
2. Exit the menu item
Run the Auto Adjust when this
button keep to push for 2 second
2 VOL - / 1.Move the cursor to down
2.Adjust down when menu item selected decreasing volume
3 Power Turn on/off Turn on/off
4 VOL + / 1.Move the cursor to up
2.Adjust up when menu item selected increasing volume
5 MENU 1.Enter the OSD sub menu
2.Select the OSD menu Open OSD menu






LM722
Page 7 of 48
Brightness Backlight Adjustment
Focus Adjust Picture Phase to reduce Horizontal-Line noise
Image Setup Clock Adjust picture Clock to reduce Vertical-Line noise.
H. Position Adjust the horizontal position of the picture.
Image
Position V. Position Adjust the vertical position of the picture.
Warm N/A Recall Warm Color Temperature from EEPROM.
Cool N/A Recall Cool Color Temperature from EEPROM.
User / Red Red Gain from Digital-register.
User / Green Green Gain Digital-register.
Color Temp.
User / Blue Blue Gain from Digital-register.
Yes N/A Auto Adjust the H/V Position, Focus and Clock of picture.
Auto Config No N/A Do not execute Auto Config, return to main menu.
H. Position Adjust the horizontal position of the OSD.
V. Position Adjust the vertical position of the OSD.
OSD Setup
OSD Timeout Adjust the OSD timeout.
English N/A Set OSD display language to English.
Deutsch N/A Set OSD display language to German.
Français N/A Set OSD display language to French.
Español N/A Set OSD display language to Spain.
Italiano N/A Set OSD display language to Italian.
Language
Simplified
Chinese N/A Set OSD display language to Simplified Chinese.
Information Information N/A Show the resolution, H/V frequency and input port of
current input timing.
Yes N/A
Clear each old status of Auto-configuration and set the
color temperature to Cool.
Reset No N/A Do not execute reset, return to main menu.
Exit N/A N/A Exit OSD

LM722
Page 8 of 48
4. Input/Output Specification
4.1 Input Signal Connector
4.1.1 Analog D-SUB Connector
PIN NO. DESCRIPTION PI N NO. DESCRIPTION
1. Red 9. +5V
2. Green 10. Logic Ground
3. Blue 11. RXD
4. TXD 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
610
11 15
4.2 Factory Preset Display Modes
VESA MODES
Horizontal Vertical
Mode Resolution Total
Nominal
Frequency
+/- 0.5kHz
Sync
Polarity
Nominal
Freq.
+/- 1 Hz
Sync
Polarit
y
Nominal
Pixel Clock
(MHz)
640x480@60Hz 800 x 525 31.469 N 59.940 N 25.175
640x480@72Hz 832 x 520 37.861 N 72.809 N 31.500
VGA
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
SVGA
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
XGA
1024x768@75Hz 1312x800 60.023 P 75.029 P 78.750
1280x1024@60Hz 1688x1066 63.981 P 60.020 P 108.000
SXGA 1280x1024@75Hz 1688x1066 79.976 P 75.025 P 135.000

LM722
Page 9 of 48
IBM MODES
Horizontal Vertical
2Mode Resolution Total
Nominal
Frequency
+/- 0.5kHz
Sync
Polarity
Nominal
Freq.
+/- 1 Hz
Sync
Polarity
Nominal
Pixel
Clock
(MHz)
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
DOS 640x350@70Hz 800 x 449 31.469 P 70.087 N 25.175
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
*, ** - The two complimentary modes feature the same horizontal and vertical sync frequencies and polarities,
and therefore require manual selection.
4.3 Power Supply Requirement
A/C Line voltage range : 100 V ~ 240 V
A/C Line frequency range : 50 ±3Hz, 60 ±3Hz
Current : TBD
Peak surge current : < 55A peak at 240 VAC and cold starting
Leakage current : < 3.5mA
Power line surge : No advance effects (no loss of information or defect)
with a maximum of 1 half-wave missing per second
Voltage : 12VDC ± 5
CURRENT : 3.5 Amp (max)
4.4 PANEL SPECIFICATION
4.4.1 Display Characteristics

LM722
Page 10 of 48
4.4.2 Optical Specification
4.4.3 ELECTRICAL SPECIFICATIONS
5. Block Diagram
5.1 Monitor Explored

LM722
Page 11 of 48
5.2 Software flowing 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
N16
17
19
Y
N
18

LM722
Page 12 of 48
Remark:
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 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
disappear.
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?

LM722
Page 13 of 48
5.2 Electrical Block Diagram
5.2.1 Main Board
OSD Control
Interface
Scalar GMZAN3/SL (BD) PQFB-100
(Include ADC, OSD)
(U102)
MCU
SM5964C40J
(U101)
EEPROM
24C16
D-Sub
Connector
(CN301)
EEPROM
24C02
H sync
V sync
RGB
RXD
TXD
DB15_SDA,
DB15_SCL
EPR_SDA
EPR_SCL
LCD Interface

LM722
Page 14 of 48
5.2.2 Inverter/Power Board
Inverter Block Diagram

LM722
Page 15 of 48
Power Block Diagram

LM722
Page 16 of 48
6. Schematic
6.1 Main Board
GND
C113 0.047uF
C108 0.047uFB
C109
NC
R116
2.2K£[ 1/16W
GREEN- 2
C179 NC
GND
R104 100£[ 1/16W
VGA_CON
D103
MLL5232B 5.6V
D111
MLL5232B 5.6V
SOG 2
HSI
C115
0.1uF/16V
R101 100£[ 1/16W
GND
D104
MLL5232B 6.2V
C110
NC
gndR
G
R103
47£[ 1/16W
IC103
M24C02WMN6
4
8 1
2
3
7
6
5GND
VCC A0
A1
A2
WP
SCL
SDA
GND
R102 47£[ 1/16W
GND
D108
MLL5232B 5.6V
VSYNC 2
GND
TXD 2
D106
BAV99
3
1 2
PC5V
R108
75£[ 1/16W
gndR
GND
gndG
EDID-WP
R11710K£[ 1/16W
DB-TXD
R178
2.7K£[ 1/16W
FB101 0£[ 1/16W
RED- 2
D102
MLL5232B 5.6V
R112 100£[ 1/16W
RED+ 2
GND
D112
MLL5232B 5.6V
D110
BAV70
3
1 2
DB-RXD
C112 0.047uF
GND
gndB
D101
BAV99
3
1 2
BLUE- 2
VGA_CAB 2
CLK_DDC
GND
+5V
VSI
C104 0.047uF
DB-TXD
GND DDC_SDA 2
PC5V
DAT_DDC
gndB
C111
NC
+5V
BLUE+ 2
VSI
R120 100£[ 1/16W
R115
2.2K£[ 1/16W
R114 47£[ 1/16W
R11810K£[ 1/16W
C117
33pF
GND
R106
75£[ 1/16W
R110 100£[ 1/16W
GND
GREEN+ 2
B
R119 100£[ 1/16W
R182
NC
CN301
DB15
1
6
2
7
3
8
4
9
5
11
12
13
14
15 10
C120
220pF
GND
R105 100£[ 1/16W
C114 0.047uF
DDC_SCL 2
GND
G
C119
0.1uF/16V
R109 100£[ 1/16W
C103
56pF
FB103 0£[ 1/16W
VGA_CON
FB104 120£[ 1/16W
C102
56pF
D105
BAV99
3
1 2
R
R176
NC
GND
DB-RXD
C116
0.1uF/16V
R111 100£[ 1/16W
GND
CLK_DDC
R177
2.7K£[ 1/16W
HSI
C118
220pF
R107
75£[ 1/16W
D107
MLL5232B 5.6V
GND
HSYNC 2
R1904.7K£[ 1/16W
C106 0.047uF
GND
RXD 2
R113 68£[ 1/16W
PC5V
D109
MLL5232B 5.6V
C121
220pF
R
gndG
GND
DAT_DDC
FB102 0£[ 1/16W

LM722
Page 17 of 48
UDART_DO
C149
0.1uF/16V
LVDS_E1
PPWR
+
C140
22uF
VGA_CAB 1
C123
0.1uF/16V
L104
120 OHM
LED_G 3
RDn
R183 4.7K£[ 1/16W
GREEN+1
R136 NC
+5V
KEY_RIGHT
R149 4.7K£[ 1/16W
77.2mA
RED+1
BRIGHTNESS 5
KEY_ONOFF
C148
33pF
GND
GND
LVDS_O[0..9] 4
A15
LVDS_O7
LVDS_E3
R124 NC
R173
NC
SP7
A14
SP11
C145
0.1uF/16V
SP8
RESET
5.8mA
GND
GND
+5V
R175 to 10K
NVRAM_SDA
R144 10K£[
3.3V_DVDD
+5V
SP2
RXD1
Philips P89C51RD2
Winbond W77E65P-24/40
SyncMOS SM2965
5.37mA
LVDS_E5
PBIAS
R174 to 22K
RDn
ALE
LVDS_E[0..9] 4
1.8V_DVDD
GND
NVRAM_SCL
LVDS_O0
114mA
+5V
3.3V_PVDD
6/25 Change EDID-EP Circuit
GND
R142 33£[ 1/16W
R129
NC
KEY_MENU
KEY_MENU
GND
KEY_RIGHT3
L102
120 OHM
U102
GMZAN3/SL
QFP-100
77
78
74
75
70
71
87
88
62
63
39
40
1
42
43
44
45
41
35
90
46
2
82
84
80
76
72
33 51
89
47 31 67
30
29
95
96
32 48 64 68 100
81
16
14
13
12
11
10
7
6
5
28
8
9
93
85
69
94 92
66
61
60
59
58
73
55
54
53
52
50
49
57
56
65
34
38
91
83
86
37
36
17
18
19
20
21
22
23
24
25
26
4
3
15
27
99
79
97
98
RED+
RED-
GREEN+
GREEN-
BLUE+
BLUE-
XTAL
TCLK
STI_TM1
STI_TM2
GPIO12/AD6
GPIO11/AD5
AVDD_LV_3.3
HDATA3/AD3
HDATA2/AD2
HDATA1/AD1
HDATA0/AD0
HFS/AD4
HCLK/ALE
RESETn
GPIO10/IRQn
VCO_LV
VDD_ADC_1.8
VDD_RPLL_1.8
AGND_ADC
AGND_ADC
AGND_ADC
RVDD_3.3 RVDD_3.3
AVDD_RPLL_3.3
CVDD_1.8 CVDD_1.8 CVDD_1.8
PPWR
PBIAS
HSYNC
VSYNC
CRVSS CRVSS CRVSS CRVSS CRVSS
GND_ADC
VDD_OUT_LV_3.3
CH0N_LV_E/G1
CH0P_LV_E/G0
CH1N_LV_E/R7
CH1P_LV_E/R6
CH2N_LV_E/R5
CLKP_LV_E/R2
CH3N_LV_E/R1
CH3P_LV_E/R0
VDD_OUT_LV_3.3
CLKN_LV_E/R3
CH2P_LV_E/R4
CRVSS
VBUFS_RPLL
AVDD_ADC_3.3
RVDD_3.3 CVDD_1.8
NC
NC
GPIO8/B6
GPIO7/B4
GPIO6/B7
SOG_MCSS
GPIO3/DVS
GPIO2/DHS
GPIO1/PWM1
GPIO0/PWM0
GPIO9/B5
NC
GPIO5/DCLK
GPIO4/DEN
CVDD_1.8
MEM_REG
GPIO13/AD7
RESET_OUT
VSS_RPLL
AVSS_RPLL
RDn
WRn
CH3P_LV_O/G2
CH3N_LV_O/G3
CLKP_LV_O/G4
CLKN_LV_O/G5
CH2P_LV_O/G6
CH2N_LV_O/G7
CH1P_LV_O/B0
CH1N_LV_O/B1
CH0P_LV_O/B2
CH0N_LV_O/B3
VDD_OUT_LV_3.3
AVSS_LV
VSS_OUT_LV
VSS_OUT_LV
CVDD_1.8
AVDD_ADC_3.3
DDC_SCL
DDC_SDA
R130 0£[ 1/16W
R141 100£[ 1/16W
C134
0.1uF/16V
GND
DDC_SCL1
R133
4.7K£[ 1/16W
NMV AS Series LCD
+1.8V_VDD
L101
120 OHM
+
C129
22uF
RED-1
AUDIO_STDBY
L106
120 OHM
RP101 33£[ 1/16W
1
2
3
4
8
7
6
5
Close to respective power Pins
715L1350-D-GM
KEY_MENU3
SOG1
L105
120 OHM
R139 100£[ 1/16W
LVDS_E9
GND
DDC_SCL
GND
R140 NC
C130
0.1uF/16V
R123
4.7K£[ 1/16W
GND
KEY_LEFT
UDART_DI
C125
0.1uF/16V
C144
0.1uF/16V
NVRAM_SCL
LVDS_O6
R126
100£[ 1/16W
Close to respective power Pins
AUDIO_MUTE
RP102 33£[ 1/16W
1
2
3
4
8
7
6
5
+5V
KEY_AUTO
GND R145
NC
C138
0.1uF/16V
+5V
GND
BLUE+1
+
C136
22uF
A14 => MEM_REG(ZAN3SL)
LVDS_E7
C124
0.1uF/16V
C141
0.1uF/16V
GND
R147 4.7K£[ 1/16W
PLCC44 - SOCKET-87L202-44
R143 10K£[
R122
4.7K£[ 1/16W
SP1
R127
4.7K£[ 1/16W
GND
UDART_DI
WRn
AUDIO_MUTE
R186 33£[ 1/16W
C146
0.1uF/16V
SP10
LVDS_O8
R174
10K£[ 1/16W
C131
0.1uF/16V
LVDS_E0
Close to respective power Pins
GND
KEY_ONOFF3
LVDS_O4
C137
0.1uF/16V
KEY_AUTO3
+5V
3.3V_AVDD
LED_O 3
AUDIO_STDBY
LVDS_O1
OPTIONAL
FOR
DEBUGGING
PURPOSES
ONLY
3.3V_PVDD
A14
A15 => HCLK(ZAN3SL)
LVDS_E2
R148 4.7K£[ 1/16W
C139
0.1uF/16V
R138 NC
C142
0.1uF/16V
R185 33£[ 1/16W
G-PROBE
BLUE-1
C150
0.1uF/16V
1.8V_AVDD
GND
KEY_LEFT
C126
0.1uF/16V
LVDS_O2
GND
LVDS_E[0..9]
KEY_UP => A9/P2.1 OF MCU
GND
GND
HSYNC1
C128
0.1uF/16V
GND
A15
C127
0.1uF/16V
+5V
AUDIO_STDBY3
AUDIO_MUTE3
LVDS_O9
1.8V_AVDD
ALE
C147
33pF
C133
0.1uF/16V
R125 100£[ 1/16W
WRn
LVDS_O[0..9]
CN102
1
2
3
4
KEY_RIGHT => A10/P2.2 OF MCU
KEY_ON/OFF => A13/P2.5 OF MCU
UDART_DO
LVDS_O5
R194
10K£[ 1/16W
R146 33£[ 1/16W
IC104
M24C16-MN6T
1
2
3
4 5
6
7
8
A0
A1
A2
VSS SI
SCK
WP
VCC
GND
LVDS_O3
L103
120 OHM
R175
10K£[ 1/16W
+5V
A15 DDC_SDA
+
C122
22uF
D
ZAN3SL & Micro I/F
C
36Monday, December 27, 2004
Title
Size Document Number Rev
Date: Sheet of
1.8V_DVDD
A14
U101
W78E65P
2
3
4
5
6
7
8
9
10
11
13
14
15
16
17
18
19
20
21
22
24
25
26
27
28
29
30
31
32
33
35
36
37
38
39
40
41
42
43
44
1
12
23
34
P1.0/T2
P1.1/T2EX
P1.2/ECI
P1.3/CEX0
P1.4/CEX1
P1.5/CEX2
P1.6/CEX3/WAIT#
P1.7/CEX4/A17/W
RST
P3.0/RXD
P3.1/TXD
P3.2/INT0#
P3.3/INT1#
P3.4/T0
P3.5/T1
P3.6/WR#
P3.7/RD#/A16
XTAL2
XTAL1
VSS
A8/P2.0
A9/P2.1
A10/P2.2
A11/P2.3
A12/P2.4
A13/P2.5
A14/P2.6
A15/P2.7
PSEN#
ALE/PROG#
EA#/VPP
AD7/P0.7
AD6/P0.6
AD5/P0.5
AD4/P0.4
AD3/P0.3
AD2/P0.2
AD1/P0.1
AD0/P0.0
VCC
NC
NC
NC
NC
X102
14.318MHz
KEY_DOWN => A11/P2.3 OF MCU
R130 Hardwave ISP function
TXD1
EDID-WP1
+ C143
10uF
C176 33p
38.4mA
GND
R137 100£[ 1/16W
R135
4.7K£[ 1/16W
C132
0.1uF/16V
KEY_ONOFF
SP6
3.3V_LAVDD
GND
PBIAS 5
DDC_SDA1
KEY_LEFT3
/WP
R128
NC
IRQn
GND
KEY_RIGHT
C184
0.1uF/16V
+3.3V_VDD
3.3V_PVDD
LVDS_E4
LVDS_E6
LVDS_E8
NVRAM_SDA
C177 47p
R179 4.7K£[ 1/16W
GREEN-1
Q107
PMBS3904
32
1
C135
0.1uF/16V
GND
3.3V_DVDD
VSYNC1
KEY_LEFT => A12/P2.4 OF MCU
WINBOND W78E65P-40-56L1125-137-X
5/11 Add H/W ISP R130 to 0 Ohm
+
C107
NC
X101
14.318MHz
+5V
3.3V_DVDD
3.3V_LAVDD
/WP
RP103 4.7K£[ 1/16W
1
2
3
4
8
7
6
5
R134
4.7K£[ 1/16W
3.3V_AVDD
+5V
3.3V_PVDD
PPWR 5
VGA_CAB
56.95mA
Add Q107-3904
GND
VOLUME 3
R188 100£[ 1/16W

LM722
Page 18 of 48
CN601
CONN
1 2
3 4
5 6
7 8
9 10
11 12
13 14
C181100pF
KEY_LEFT
GND
LINE-IN-R
R180 220£[ 1/16W
LED_O
LINE-IN-L
GND
+5V
VOLUME 2
KEY_MENU
KEY_LEFT
R160 220£[ 1/16W
R189
470£[ 1/16W
+12V
KEY_MENU
KEY_AUTO
CN602
CON16A
1 2
3 4
5 6
7 8
9 10
11 12
13 14
15 16
AUDIO_STDBY
LED_G
R150 1K£[ 1/16W
R153
100£[ 1/16W
KEY_RIGHT 2
KEY_AUTO
VOL
KEY_ONOFF
GND
AUDIO_MUTE
C156
0.001uF
GND
FB106 120 OHM(NC)
R187 4.7K£[ 1/16W
Q106
PMBS3904
32
1
VOLUME C178
NC
C155
0.001uF
KEY_MENU 2
R157 220£[ 1/16W
+5V
R158 220£[ 1/16W
+3.3V_VDD
MUTE
VOLUME
C151
NC
STANDBY
SPKR_R+
GND
KEY_LEFT 2
AUDIO_MUTE
LED_GREEN
R159 220£[ 1/16W
R152
100£[ 1/16W
Q102
PMBS3906
3 2
1
GND
LINE-IN-R
C157
0.001uF
R155 1K£[ 1/16W
SPKR_R+
LED_G 2
AUDIO_STDBY
GND
R181 1K£[ 1/16W
AUDIO_STDBY 2
R184
1K£[ 1/16W
R192
4.7K£[ 1/16W
VOL
GND
C1801uF/25V
R154 1K£[ 1/16W
C154
0.001uF
LINE-IN-L
GND
LED_ORANGE
FB105 600 OHM
GND
+5V
KEY_AUTO 2
SPKR_L+
GND +3.3V_VDD
KEY_RIGHT
LED_O
LED_G
+5V
KEY_ONOFF 2
KEY_ONOFF
SPKR_L+
R191
4.7K£[ 1/16W
LED_O 2
AUDIO_MUTE 2
KEY_RIGHT
Q101
PMBS3906
3 2
1

LM722
Page 19 of 48
RXEC-
LVDS_E3
RXO0+
LVDS_O3
LVDS_O0
LVDS_O0
LVDS_O8 RXE0+LVDS_E0
RXO0-
RXE0-
LVDS_O2
RXO3-
GND
RXEC+
RXO2+
LVDS_E4
LVDS_O9
LVDS_E6 C159
0.1uF/16V
LVDS_E5
CN503
CON24A
1 2
3 4
5 6
7 8
9 10
11 12
13 14
15 16
17 18
19 20
21 22
23 24
GND
LVDS_O9
RXO1+
LVDS_O6
LVDS_O7
LVDS_E2
LVDS_O3
LVDS_E2
RXE3-
C160
NC
LVDS_O4
LVDS_E5
LVDS_E7
LVDS_E0
GND
+
C158
10uF
LVDS_E1
RXE1-
LVDS_O4
LVDS_O1
LVDS_E8
LVDS_O2
LVDS_E9
RXO1- LVDS_O5
LVDS_O7
RXE2+
+VLCD
LVDS_E7
RXO2-
LVDS_E8
LVDS_O1 LVDS_E4 LVDS_E3
RXO3+
LVDS_E9
LVDS_O8
LVDS_O[0..9]2
LVDS_E1
RXOC+
RXE2-
LVDS_O6
RXE1+
R172
330£[ 1/8W
LVDS_E6 RXE3+
RXOC-
LVDS_O5
15.4mA
LVDS_E[0..9]2

LM722
Page 20 of 48
+3.3V_VDD
GND
1
R162 4.7K£[ 1/16W
R193 100£[ 1/16W
GND
GND
C163
0.1uF/16V
GND
1104 ADD R195 AND C185 AND C186 AND C187 FOR Inrush current
circuit
C168
0.1uF/16V
Add R193-100 ohm
+1.8V_VDD
VCC5V
+
C172
10uF
C183
0.1uF/16V
L108
120 OHM
TO-263 For 15"
Q105
NC
32
1
+5V
GND
G
204mA
GND
GND
5/13 15 NMV R164 Change from
680 ohm to 1K ohm
GND
5/13 15 NMV R166 Change from
1K ohm to 4.7K ohm
Q104
AO3401
+
C161
220uF/25V
D113
GS1D
+5V
U502
3 2
1
VI VO
GND
C185
0.068uF
GND
TO223 For 17" 19"
D
GND
GND
+
C169
10uF
1
GND
U503
AIC1084-33CE
3
1
2
VIN
ADJ
VOUT
R165
1K£[ 1/16W
GND
GND
CN501
CONN
1
2
+5V
3
GND
VCC12V
+
C170
47uF/25V
2
AO3401
C164
0.1uF/16V
GND
S
VCC5V
2
R171
NC
+5V
R163
NC
C186
0.1uF
GND
VCC12V
142mA
GND
+5V
C173
0.1uF/16V
GND
L107
120 OHM(NC)
GND
CN201
CON402(PITCH 2.00)
1
3
5
7
9
11
2
4
6
8
10
12
+VLCD
+
C165
47uF/25V
+12V
C187
NC/0.1uf
0.8A-max
R164
680£[ 1/16W
GND
6/25 BOM Modify
R167-1K ohm
PPWR2
+
C171
47uF/25V
Q103
PMBS3904
32
1
ON_OFF
R168
NC
3
+3.3V_VDD
+
C182
47uF/25V
BRIGHTNESS2 C174
0.1uF/16V
GND
SOT-223
GND
GND
+5V
+
C166
47uF/25V
+
C162
220uF/25V
R167
1K£[ 1/16W
D114
GS1D
+5V
R195
100K£[ 1/16W
C175
NC
Cancel
R171,C175,R168,Q105
C167
0.1uF/16V
1.435A
PBIAS 2
R166
1K£[ 1/16W