AOC LM965 User manual
AOC LM965
1
19” LCD MONITOR
LM965
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 INFORMATIONAFTER THE DATE OF PUBLICATION AND DISCLAIMS RE LIABILITY FOR
CHANGES, ERRORS OR OMISSIONS.
SERVICE MANUAL
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Table of Content
Revision List…………………………………………………………………………………………………………. 3
1. Monitor Specifications………………………………………………………………………………………….. 4
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………………………………………………………………………………………….. 7
4. Input/Output Specification……………………………………………………………………………………... 9
4.1 Input Signal Connector……………………………………………………………………………………….. 9
4.2 Power Supply Requirements………………………………………………………………………………… 9
4.3 Factory Preset Display Modes……………………………………………………………………………….. 10
4.4 Panel Specification………………………………………………………………………………………….… 11
4.4.1 General Description……………………………………………………………………………………… 11
4.4.2 Display Characteristics………………………………………………………………………………….. 11
4.4.3 Optical Characteristics…………………………………………………………………………………… 12
4.4.4 Electrical Characteristics………………………………………………………………………………… 13
5. Block Diagram………………………………………………………………………………………………….… 14
5.1 Monitor Exploded View……………………………………………………………………………………….. 14
5.2 Software Flow Chart…………………………………………………………………………………………... 15
5.3 Electrical Block Diagram……………………………………………………………………………………… 17
5.3.1 Main Board………………………………………………………………………………………………... 17
5.3.2 Inverter/Power Board………………………………………………………….…………………………. 18
6. Schematic……………………………………………………………………………………………………….… 19
6.1 Main Board…………………………………………………………………………………………………….. 19
6.2 Power Board……………………………………………………………………….………………………….. 25
6.3 Audio Board……………………………………………………………………….………………………….. 29
7. PCB Layout………………………………………………………………………………………………………. 30
7.1 Main Board…………………………………………………………………………………………………….. 30
7.2 Power Board………………………………………………………………………….……………………….. 31
7.3 Audio Board…………………………………………………………….……………………………………… 32
7.4 Key Board……………………………………………………………………………………………………… 32
8. Maintainability……………………………………………………………………………………………………. 33
8.1 Equipments and Tools Requirement………………………………………………………………………… 33
8.2 Trouble Shooting…………………………………………………………………………………………….… 34
8.2.1 Main Board………………………………………………………………………………………………... 34
8.2.2 Power /Inverter Board……………………………………………………………………………………. 37
8.2.3 Keypad Board…………………………………………………………………………………………….. 39
9. White-Balance, Luminance adjustment…………………………………………………………….……….. 40
10. EDID Content……………………………………………………………………………………………………. 42
11. BOM LIST………………………………………………………………………………………………………... 43
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1. Monitor Specifications
Items Description
Driving system TFT Color LCD
Type M190EN04
Size 48.0cm(19.0")
Pixel pitch 0.294mm (H) x 0.294mm (V)
Viewable angle 140(H) 135(V)
LCD Panel
Response time 8 ms
Sync. Type H/V TTL
Input Signal 15Pin Analog
H-Frequency 30kHz – 83kHz
Input
V-Frequency 55-75Hz
ON Mode <55W
Power Consumption OFF Mode <3W
Display Color 16.2M colors (RGB 6-bits data+FRC data)
Contrast Ratio 550:1
Dot Clock 135MHz
White Luminance 270cd/m2
Max. Resolution 1280 x1024
Plug & Play VESA DDC2BTM
Power Source 100~240VAC,47~63Hz
Maximum Screen Size Horizontal : 376.32mm
Vertical: 301.06mm
Environmental
Conditions
Operating Temp: 0°C to 40°C
Storage Temp: -20°C to 60°C
Operating Humidity: 15% to 90%
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2. LCD Monitor Description
The LCD MONITOR will contain a main board, a power board, a keypad board and an audio 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.
Video signal, DDC
CCFT Drive.
PWPC Board
(
Include Ada
p
ter and Inverter
)
Flat Panel and
CCFL backlight
Main Board
RS232 Connector
For white balance
adjustment in factory
mode
HOST Computer
AC-IN
100V-240V
Monitor Block Diagram
Audio board Keyboard
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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 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
-Power Button:
When pressed, the monitor enters the off mode, and the LED turns blank. Press again to restore normal status.
-Left / Right Button:
The Left/Right Button is used to control the monitor functions. Press to switch functions or adjust settings.
- Auto Adjust Key:
The Auto Adjust Key is used to automatically set the H Position, V Position, Clock and Phase.
-Power Indicator:
Blue — Power On mode.
Orange — Power Saving mode.
Blank —Power Off Mode.
NO. Name Within OSD Without OSD
1 MENU Select Function or select Sub menu Activate OSD main menu
2 VOL+ / 1.Move the cursor to right
2.Increase the value of the selected item Activate the audio menu
3 POWER Power On / Off Power On / Off
4 VOL-/ 1.Move the cursor to left
2.Decrease the value of the selected item Activate the audio menu
5 Auto/EXIT Exit OSD or back to previous menu Auto configuration
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3.3 Adjusting The Picture
The Description For Control Function:
Main Menu
Item
Main
Menu
Icon
Sub Menu
Item
Sub Menu
Icon Description Adjust
Range Reset Value
Contrast Contrast from Digital-register. 0-100 Recall Cool
Contrast Value
Luminance Brightness Backlight Adjustment 0-100
Recall Cool
Brightness
Value
Focus
Adjust Picture Phase to reduce
Horizontal-Line noise 0-100 Do Auto Config
Image Setup Clock
Adjust picture Clock to reduce
Vertical-Line noise. 0-100 Do Auto Config
H. Position
Adjust the horizontal position of
the picture. 0-100 Do Auto Config
Image
Position V. Position
Adjust the vertical position of the
picture. 0-100 Do Auto Config
C1 N/A
Recall warm Color Temperature
from EEPROM. N/A
C2 N/A
Recall cool Color Temperature
from EEPROM. N/A
sRGB N/A
Recall sRGB Color Temperature
from EEPROM. N/A
User / Red Red Gain from Digital-register. 0-100
User /
Green Green Gain from Digital-register. 0-100
Color Temp.
User / Blue Blue Gain from Digital-register. 0-100
The Color
Temperature
will be set to
Cool.
The User
R/G/B value
(default is 100)
will not be
Modified by
Reset function.
Auto Config
(Analog-Only Yes N/A
Auto Adjust the H/V Position,
Focus and Clock of picture. N/A N/A
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Model) No N/A
Do not execute Auto Config,
return to main menu. N/A N/A
H. Position
Adjust the horizontal position of
the OSD. 0-100 50
V. Position
Adjust the vertical position of the
OSD. 0-100 50
OSD Setup
OSD
Timeout Adjust the OSD timeout. 10-120 10
English N/A Set OSD display language to
English. N/A
Deutsch N/A Set OSD display language to
German. N/A
Français N/A Set OSD display language to
French. N/A
Español N/A Set OSD display language to
Spain. N/A
Italiano N/A Set OSD display language to
Italian. N/A
Language
简体中文 N/A Set OSD display language to
simplified Chinese. N/A
The Language
will be set to
English.
Information Information N/A
Show the resolution, H/V
frequency and input port of
current input timing.
N/A N/A
Yes N/A
Clear each old status of
Auto-configuration and set the
color temperature to Cool.
N/A N/A
Reset
No N/A
Do not execute reset, return to
main menu. N/A N/A
Exit N/A N/A Exit OSD N/A N/A
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4. Input/Output Specification
4.1 Input Signal Connector
Pin No. Description Pin No. Description
1. Red 9. No Pin!
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
610
11 15
4.2 Power Supply Requirement
A/C Line voltage range : 100 V ~ 240 V
A/C Line frequency range : 50 ±3Hz, 60 ±3Hz
Input Current : 1.5A max at 100V; 0.8A max at 240 V
Peak surge current : < 55Apeak 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 : 5VDC ± 5％; 12VDC± 5％
CURRENT : 1.5Amp (5V) ；2 Amp (12V)
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4.3 Factory Preset Display Modes
VESA MODES
Horizontal Vertical
Mode Resolution Total
Nominal
Frequency
+/- 0.5kHz
Sync
Polarity
Nominal
Freq.
+/- 1 Hz
Sync
Polarity
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
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
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4.4 Panel Specification
4.4.1 General Description
This specification applies to the 19.0 inch Color TFT-LCD Module M190EN04.
The display supports the SXGA (1280(H) x 1024(V)) screen format and 16.2M colors.
All input signals are 2 Channel LVDS interface compatible.
This module does not contain an inverter card for backlight.
4.4.2 Display Characteristics
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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?
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5.3 Electrical Block Diagram
5.3.1 Main Board
MCU
W78E65
(U601)
Scalar IC TSU16AK
(Include ADC, OSD)
(U401)
EEPROM
24LC16B
(U602)
EEPROM
M24C02
(U301)
H sync
V sync
RGB
DB15_SDA,
DB15
_
SCL
EPR_SDA
EPR_SCL
LCD Interface
(CN503)
Key Board
Control
D-Sub
Connector
(CN301)
Crystal
14.318MHZ
(X401)
Crystal
20MHZ
(X601)
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5.3.2 Inverter/Power Board
CN902
EMI filter
Bridge
Rectifier
and Filter
Start Circuit
R906, R907
PWM
Control IC
Over
Voltage
Protect
AC input
12V
PWM
Control IC
Feedback
Circuit
OSC and
Output
Circuit DC Convert
Circuit MOSFET
Over
Voltage
Protect
Lamp
ON/OFF
ON/OFF
Control
Rectifier
diodes
Feedback
Circuit
Transformer
DIM
IC101 5V
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6. Schematic
6.1 Main Board
715L1237-1-3
VAA1
B1
3.INPUT
RIN
GIN
BIN
VSYNC
GNDR
GNDG
GNDB
ST_DET1 HSYNC
SOGDDC_CLK
DDC_DAT
ST_DET2
R+
R-
G-
G+
B+
B-
CLK+
CLK-
TXD
RXD
PA[0..9]
VAA2
VLCD
TSU16AK SCHEMATIC
VCC2.5
VCC5V
VCC12V
VCPU VCC12V
VAA4
VAA3
VAA1
VAA3VCC2.5
VCC3.3
B3
6.MCU
onBACKLITE
ST_DET2
onPANEL_5V/3.3V
SDA
INT
CSZ
DDC_DAT
ST_DET1
SCL
HWRESET
DDC_CLK
Volume
VCC5V
VCC12V
VCPU
RXD
TXD
AD0
AD1
AD2
AD3
VCC5V
B5
5.PANEL INTERFACE
VLCD
PB[0..9]
PA[0..9]
VAA4
PB[0..9]
VLCD
B4
2.POWER
onPanel_5V/3.3V
onBACKLITE
AdjBACKLITE
VCC3.3
VCC2.5
VAA1
VAA2
VAA3
VAA4
VCC5V
VCC12V
VLCD
VCPU
B2
4.SCALER
RIN
GIN
SOG
BIN
GNDR
GNDG
GNDB
HSYNC
VSYNC
R+
R-
G-
G+
B+
B-
CLK+
CLK-
CSZ
SCL
SDA
HWRESET
INT
Volume
AdjBACKLITE
PA[0..9]
PB[0..9]
VCC2.5
VCC3.3
VAA1
VAA2
VAA3
VAA4
AD0
AD1
AD2
AD3
VCPU
VCC3.3
TOP
D
B
16Wednesday, April 14, 2004
Title
Size Document Number Rev
Date: Sheet of
VAA2
TSU16AK for AOC
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VAA2
VCC5V+
VCC5V
R204
10K 1/16W
VCC5V
C
BE
VCC3.3
VAA4 4
C201
0.1uF
Q202
PMBS3904
32
1
Q203
AO3401
+
C202
220uF/25V
D201 SS14
VAA2 4
TO-263
onPanel_5V/3.3V6
Brightness
VAA1 4
onBACKLITE 6
R208
10K 1/16W
R202
10K 1/16W
R209
0 1/16W
R211
10K 1/16W
VCC3.3
VLCD 5
VAA1
R212 4.7K 1/16W
GND
TSU16AK for AOC
C205
0.1uF
VAA4
Q204
PMBS3904
32
1
VCC5V
VCC12V
GND
VCPU
R216
4.7K 1/16W
ON_OFF
VCPU 6
VAA3
GND
R210
NC
VCC3.3 4
VCC12V 6
R207
4.7K 1/16W
R214 delete
VCC12V
+
C204
220uF/25V
U202
AIC1084-33M
3
1
2
VIN
ADJ
VOUT
NEW
Circuit
VCC5V+
VCC5V
GND R201 4.7K 1/16W
VAA3 4
VCC5V
U201
RT9164
3 2
1
VI VO
GND
C210
0.1uF
R205 4.7K 1/16W
C203
0.1uF
+
C211
47uF/16V
VCC5V+
+
C215
47uF/16V
C
BE
VCC5V
AdjBACKLITE4
Q201
PMBS3904
32
1
POWER
D
B
26Friday, November 26, 2004
Title
Size Document Number Rev
Date: Sheet of
R206
10K 1/16W
C207
0.1uF
VLCD
GND
C216
0.1uF
C212
0.1uF
VCC2.5
VCC12V
VCC5V
VCC5V 3,4,6
GND
C217
0.068uF
SOT-252
C206
1uF/25V
DIM
+
C208
100uF/16V
FB201
600 OHM
CN201
CONN
2
4
6
8
10
12
1
3
5
7
9
11
VCC12V
R215
100K 1/16W
VCC2.5 4
C214
0.1uF
R213
NC
R203
1K 1/16W
D202
GS1D
VCC5V
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