AOC LM960 User manual

AOC LM960
Page 1 of 54
19” LCD Monitor
EN9600
LM960S
LM960
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.
MANUFACTURE DATE: Aug-24-2005
SERVICE MANUAL
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AOC LM960
Page 2 of 54
REVISION DATE MODIFIACTION
A00 Aug-24-2005
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AOC LM960
Page 3 of 54
TABLE OF CONTENTS
Revision List ---------------------------------------------------------------------------------- 02
Table of Contents ---------------------------------------------------------------------------------------- 03
1. Monitor Specifications --------------------------------------------------------------------------------04
2.LCD Monitor Description -----------------------------------------------------------------------05
3.Operation Instructions --------------------------------------------------------------------------06
3.1 General Instructions -----------------------------------------------------------------------06
3.2 Control Button ------------------------------------------------------------------------------06
3.3 Adjusting The Picture ---------------------------------------------------------------------07～08
4. Input/Output Specification ------------------------------------------------------------------- 09
4.1 Input Signal Connector -------------------------------------------------------------------09
4.2 Factory Preset Display Modes ----------------------------------------------------------10
4.3 Power Supply Requirements ------------------------------------------------------------10
5.Panel Specification----------------------------------------------------------------------------------12
5.1 General Feature ----------------------------------------------------------------------------12
5.2 Optical Characteristics --------------------------------------------------------------------13
6. Block Diagram -----------------------------------------------------------------------------------13
6.1 Monitor Exploded View ------------------------------------------------------------------13
6.2 Software Flow Chart -----------------------------------------------------------------------14～15
6.3 Electrical Block Diagram -----------------------------------------------------------------16～17
7. Schematic -----------------------------------------------------------------------------------------18
7.1 Scalar Board ---------------------------------------------------------------------------------18～23
7.2 Power Board -------------------------------------------------------------------------24～26
8. PCB Layout ---------------------------------------------------------------------------------------27
8.1 Main Board ----------------------------------------------------------------------------------27
8.2 Power Board --------------------------------------------------------------------------------28
8.3 KEY Board ------------------------------------------------------------------------------ 28
9. Maintainability -----------------------------------------------------------------------------------29
9.1 Equipments and Tools Requirements -------------------------------------------------29
9.2 Trouble Shooting ---------------------------------------------------------------------------30～35
10. White-Balance, Luminance Adjustment ----------------------------------------------- 36
11. Check List after replacing LCD Main board----------------------------------------------- 37～39
12. EDID Content ---------------------------------------------------------------40
13. BOM List ----------------------------------------------------------------------------------41～54
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AOC LM960
Page 4 of 54
1. MONITOR SPECIFICATIONS
Driving system TFT LCD
Size 48cm(19")
Type HSD190ME12 (HSD)
Pixel pitch 0.294mm(H) x 0.294mm(V)
Viewing angle 140(H) 130(V) (R>10)
Luminance 250cd/m2
Contrast Ratio 500:1
Response time 16ms (typ)
LCD Panel
Display colors 16.2 million Colors
R G B Analog 0.7Vp-p
H/V separate TTL level
H/V composite TTL level
Horizontal frequency 30kHz–83kHz
Vertical rate 55-75Hz
Input signals
Recommend resolution 1280 x 1024@75HZ
ON MODEL ≤50W
Power consumption OFF MODEL ≤2W
Power supply AC voltage 100~240VAC,47~63Hz
Operating condition Temperature 5-50°C
Storage Condition Temperature -20-60°C
Dimension Unpackaged 423 mm (W) x 429mm (H) x 215mm (D)
Maximum Screen Size Horizontal: 376.32mm，Vertical: 301.056mm
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AOC LM960
Page 5 of 54
2. LCD MONITOR DESCRIPTION
The LCD MONITOR will contain a main board, a power board and a keypad 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.
PWPC 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
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AOC LM960
Page 6 of 54
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
1. MENU / ENTER 2. / Contrast
3. Power Button/ LED 4. / Brightness
5. AutoAdjustbutton/Exit
FRONT PANEL CONTROL
•Power Button:
Press this button to turn the monitor ON or OFF.
•Power Indicator:
Blue — Power On mode.
Orange —Off mode.
•MENU / ENTER :
Activate OSD menu when OSD is OFF or activate/de-activate adjustment function when OSD is ON or Exit OSD
menu when in Brightness/ ContrastAdjust OSD status.
•Brightness / :
Adjust brightness or function adjust.
•Contrast / :
Adjust contrast or function adjusts.
•Auto Adjust button / Exit:
1.When OSD menu is in active status, this button will act as EXIT-KEY (EXIT OSD menu).
2. When OSD menu is in off status, press this button for 2 seconds to activate the Auto Adjustment function.
The Auto Adjustment function is used to set the HPos, VPos, Clock and Focus.
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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 C1 Temperature from
EEPROM. N/A
C2 N/A
Recall cool C2 Temperature from
EEPROM. N/A
User / Red Red Gain from Digital-register. 0-100
User /
Green Green Gain from Digital-register. 0-100
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.
Color Temp.
sRGB N/A Recall sRGB from EEPROM. N/A sRGB
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AOC LM960
Page 8 of 54
Yes N/A
A
uto Adjust the H/V Position, Focus
and Clock of picture. N/A N/A
Auto Config
(Analog-Only
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
Language
Italiano N/A Set OSD display language to Italian. 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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AOC LM960
Page 9 of 54
4. INPUT/OUTPUT SPECIFICATION
4.1 INPUT SIGNAL CONNECTOR
ANALOG D-SUB CONNECTOR
PIN NO. DESCRIPTION PI N NO. DESCRIPTION
1. Red 9. +5V
2. Green 10. Detect Cable
3. Blue 11. TXD
4. RXD 12. DDC-Serial Data
5. Ground 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
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AOC LM960
Page 10 of 54
4.2 FACTORY PRESET DISPLAY MODES
STANDARD RESOLUTION HORIZONTAL
FREQUENCY
VERTICAL
FREQUENCY
Dos-mode 720 x 400 31.47kHz 70.0Hz
640 × 480 31.47kHz 60.0Hz
VGA 640 × 480 37.50kHz 75.0Hz
800 × 600 37.879kHz 60.0Hz
SVGA 800 × 600 46.875kHz 75.0Hz
1024 × 768 48.363kHz 60.0Hz
1024 × 768 56.476kHz 70.0Hz
XGA
1024 × 768 60.021kHz 75.0Hz
1280 × 1024 64.000kHz 60.0Hz
SXGA 1280 × 1024 80.000kHz 75.0Hz
4.3 POWER SUPPLY REQUIREMENT
A/C Line voltage range : 100 V ~ 240 V
A/C Line frequency range : 50 ±3Hz, 60 ±3Hz
Current : 1.5A max at 100V; 0.8A max at 240 V
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 : 5VDC ± 5％;12VDC ± 5％
CURRENT : 1.5Amp (5V) ；2 Amp (12V)
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AOC LM960
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5. PANEL SPECIFICATION
5.1 GENERAL FEATURE
z19”SXGA TFT LCD panel
z4 CCFLs Backlight system
zSupported SXGA (V:1024 lines, H:1280 pixels) resolution
zSupported to 75Hz refresh rate¦ With LCD Timing Controller
Display Characteristics
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AOC LM960
Page 12 of 54
5.2 OPTICAL SPECIFICATION
ELECTRICAL SPECIFICATIONS
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AOC LM960
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6. BLOCK DIAGRAM
6.1 MONITOR EXPLORED
1 KEY PAD 33G6288-Q1-L
2 LENS 33G6289-1
3 BEZEL 34G6201AGM-2B
4 PANEL BRACKET 15G6207-R-2
5 PANEL BRACKET 15G6207-L-2
6 REAR COVER 34G6202-GM-4B
7 SHIELD 85G6119-4
8 PANEL BRACKET 15G6207-R-2
9 HINGE
10 STAND 34G1435-GM-B
11 BASE 34G6203-GM-B
12 HINGE BRACKET 15G6206-1
13 HINGE BRACKET 15G6206-1
14 KEY PAD 33G6288-Q1-L
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AOC LM960
Page 14 of 54
6.2 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
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AOC LM960
Page 15 of 54
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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AOC LM960
Page 16 of 54
6.3 ELECTRIAL BLOCK DIAGRAM
6.3.1 MAIN BOARD
MCU
W78E65P-40
(U601)
Scalar TSU56AK-LF
(Include ADC,OSD)
(U401)
EEPROM
AT24C16N
(U602)
EPR_SDA
EPR_SCL
LCD Interface
(CN503)
D-Sub
Connector
(CN301)
EEPROM
24C02
(U301)
H sync
V sync
RGB
DDC_SDA,
DDC
_
SCL
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AOC LM960
Page 17 of 54
6.3.2 INVERTER/POWER BOARD
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AOC LM960
Page 18 of 54
7. SCHEMATIC
7.1 MAIN BOARD
715L1237-1-3
VAA1
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
VAA1
PB[0..9] VLCD
VCC5V
VCC3.3
VAA3
VCC3.3
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
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
VCC12V
VAA4
VCC5V
VCC2.5
B4
2.POWER
onPanel_5V/3.3V
onBACKLITE
AdjBACKLITE
VCC3.3
VCC2.5
VAA1
VAA2
VAA3
VAA4
VCC5V
VCC12V
VLCD
VCPU
VAA2
VCPU
MST8031/8131 SCHEMATIC
VLCD
VCPU
VAA4
PA[0..9]
VAA3
TOP
D
MST8031 / MST8131 for AOC
B
16Wednesday, April 14, 2004
Title
Size Document Number Rev
Date: Sheet of
B5
5.PANEL INTERFACE
VLCD
PB[0..9]
PA[0..9]
VCC12V
VCC2.5 VAA2
TSU16AK
TSU16AK for AOC
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AOC LM960
Page 19 of 54
R213
NC
VAA1 4
GND
R203
1K 1/16W
AdjBACKLITE4
onPanel_5V/3.3V6 R207
4.7K 1/16W
C203
0.1uF
C217
0.068uF
VCC5V
VAA2 4
VAA4
VLCD
VCC12V
VLCD 5
R201 4.7K 1/16W
+ C208
100uF/16V
VCC12V
VCC5V
C205
0.1uF
R212 4.7K 1/16W
+
C204
220uF/25V
C212
0.1uF
NEW
Circuit
VCC3.3 4
VCC12V 6
R204
10K 1/16W
FB201
600 OHM
Brightness
R216
4.7K 1/16W
VCC12V
VCC2.5
TO-263
GND
R214 delete
R208
10K 1/16W
C
BE
C206
1uF/25V
SOT-252
onBACKLITE 6
GND
VCC3.3
Q204
PMBS3904
32
1
U201
RT9164
3 2
1
VI VO
GND
VCC5V+
+ C215
47uF/16V
U202
AIC1084-33M
3
1
2
VIN
ADJ
VOUT
VAA2
Q201
PMBS3904
32
1
C214
0.1uF
+
C202
220uF/25V
D202
GS1D
R205 4.7K 1/16W
R210
NC
D201 SS14
VCC2.5 4
VCC5V
CN201
CONN
2
4
6
8
10
12
1
3
5
7
9
11
VCPU
VCC5V
+ C211
47uF/16V
GND
VCC3.3
VCC12V
R209
0 1/16W
VCPU 6
VCC5V
R202
10K 1/16W
C210
0.1uF
C207
0.1uF
VCC5V
GND
C
BE
Q202
PMBS3904
32
1
ON_OFF
VCC5V+
VCC5V
R215
100K 1/16W
VAA1
VAA3
R206
10K 1/16W
POWER
D
MST8031/ MST8131 for AOC
B
26Friday, November 26, 2004
Title
Size Document Number Rev
Date: Sheet of
VCC5V+
C216
0.1uF
VAA3 4
R211
10K 1/16W
VCC5V 3,4,6
C201
0.1uF
DIM
Q203
AO3401
VCC5V
GND
VAA4 4
TSU16AK for AOC
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AOC LM960
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R- 4
R305 100 1/16W
R322 100 1/16W
GNDB 4
CLK- 4
TXD 6
VCC5V
R302 100 1/16W
GNDG 4
C312
220pF
D314
LL5232B 5.6V 5%
RXD 6
ST_DET2 6
DVI5V
R318
10K 1/16W
C301
NC
DVI5V
D306
BAV99
3
1 2
R304 470 1/16W
R321
10K 1/16W
CN301
DB15
1
6
2
7
3
8
4
9
5
11
12
13
14
15 10
PC5V
R310 1K 1/16W
D321
TZMC5V6-GS08
C306 0.047uF
HSYNC 4 D304
BAV70
1
2 3
R303 100 1/16W
D313
BAV99
3
1 2
VCC5V
VSI
C313
0.1uF
D311
BAV99
3
1 2
RIN 4
R306 100 1/16W
GIN 4
R+ 4
DDC_CLK6
C315
0.1uF
R320 100 1/16W DAT_DDC2
FB302 0 1/16W
VGA_CON
U301
M24C02WMN6
1
2
3
45
6
7
8A0
A1
A2
GNDSDA
SCL
WP
VCC
D305
BAV70
1
2 3
VSYNC 4
C308 0.047uF
CLK_DDC2
B+ 4
G- 4
C305 0.047uF
R319 100 1/16W
D323
TZMC5V6-GS08 C309 0.047uF
C307 0.001uF
DAT_DDC
R323
10K 1/16W
R301 100 1/16W
R317
10K 1/16W
GNDR 4
BIN 4
C311
33pF
CLK+ 4
HSI
D318
TZMC5V6-GS08
D302
BAV99
3
1 2
R314
10K 1/16W
D312
BAV99
3
1 2
D317
TZMC5V6-GS08
R312 100 1/16W
VCC5V
ST_DET1 6
CLK_DDC
FB304 150 OHM
G+ 4
C304 0.047uF
D309
BAV99
3
1 2
VCC5V
D320
TZMC5V6-GS08
D315
LL5232B 5.6V 5%
D301
BAV99
3
1 2
C314
0.1uF
DDC_DAT6
C310 0.047uF
C303
NC
R308
10K 1/16W
D307
BAV99
3
1 2
PC5V
R316 100 1/16W
R327
75 1/16W
D303
BAV99
3
1 2
R309 100 1/16W
R307 100 1/16W
C302
NC
VCC5V
R324
10K 1/16W
INPUT
D
MST8031/ MST8131 for AOC
B
36Tuesday, November 09, 2004
Title
Size Document Number Rev
Date: Sheet of
CN302
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
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
FB303 0 1/16W
SOG 4
R315 100 1/16W
B- 4
R313
2.2K 1/16W
R326
75 1/16W
R311 1K 1/16W
R325
75 1/16W
D319
TZMC5V6-GS08
D308
BAV99
3
1 2
D322
TZMC5V6-GS08
U302
M24C02WMN6
1
2
3
45
6
7
8A0
A1
A2
GNDSDA
SCL
WP
VCC
FB301 0 1/16W
D310
BAV99
3
1 2
D316
LL5232B 5.6V 5%
TSU16AK for AOC
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