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VS19X
Service Manual
61 pgs2.41 Mb0

AOC VS19X Service Manual

HP VS19X Service Manual
SERVICE MANUAL
19” LCD Monitor
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 RELIABILITY FOR CHANGES, ERRORS OR OMISSIONS.
HP VS19X Service Manual
Table of Contents
Table of Contents ---------------------------------------------------------------------------------- 02
Revision List ---------------------------------------------------------------------------------------- 04
1.Product Feature --------------------------------------------------------------------------------05
2.LCD Monitor Description -----------------------------------------------------------------------06
3.Operation Instructions --------------------------------------------------------------------------07
3.1 General Instructions -----------------------------------------------------------------------07
3.2 Control Button -------------------------------------------------------------------------------07
3.3 Adjusting The Picture ------------------------------------------------------------------------09
4. Input/Output Specification ---------------- --------------------------------------------------- 10
4.1 Input Signal Connector -------------------------------------------------------------------10
4.2 Factory Preset Display Modes ----------------------------------------------------------11
4.3 Power Supply Requirements ------------------------------------------------------------11
5.Panel Specification ----------------------------------------------------------------------------12
5.1 General Feature ----------------------------------------------------------------------------12
5.2 Optical Characteristics --------------------------------------------------------------------13
6. Block Diagram -----------------------------------------------------------------------------------14
6.1 Monitor Exploded View ------------------------------------------------------------------14
6.2 Software Flow Chart -----------------------------------------------------------------------15
6.3 Electrical Block Diagram ------------------------------------------------------------------16
6.3.1 Scalar Board ---------------------------------------------------------------------------16
6.3.2 Inverter/Power Board ----------------------------------------------------------------17
7. Schematic -----------------------------------------------------------------------------------------20
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HP VS19X Service Manual
7.1 Main Board -----------------------------------------------------------------------20
7. 2 Audio Board ----------------------------------------------------------------------27
7. 3 Power Board ---------------------------------------------------------------------28
8. PCB Layout ---------------------------------------------------------------------------------------31
8.1 Main Board -----------------------------------------------------------------------------------31
8.2 Power Board ---------------------------------------------------------------------------------32
8.3 Keypad Board -------------------------------------------------------------------------------33
9. Maintainability ------------------------------------------------------------------------------------33
9.1 Equipments and Tools Requirements -------------------------------------------------33
9.2 Trouble Shooting ---------------------------------------------------------------------------34
9.2.1 Main Board ------------------------------------------------------------------------34
9.2.2 Power/Inverter Board -------------------------------------------------------------37
9.2.3 Key Pad Board -----------------------------------------------------------------------39
10. White-Balance, Luminance Adjustment ----------------------------------------------- 40
11.Check List after replacing LCD Main board-------------------------------------------------41
12. EDID Content -----------------------------------------------------------------------------------45
13. BOM List ----------------------------------------------------------------------------------46～61
13.1 T982KH4DBHHAA -----------------------------------------------------------------46～61
3
HP VS19X Service Manual
Revision List
Revision Date Change Description
A00 Nov-20-05 Initial release
4
Product Feature
HP VS19X Service Manual
Driving system TFT Color LCD
Panel M190EN04 V5
Size 48.3cm(19.0")
Pixel pitch 0.294mm( H )x 0.294mm( V )
LCD Panel
Input
Display Colors Over 16 million Colors
Dot Clock 140MHz
Max. Resolution 1024 x768
Plug & Play VESA DDC2BTM
Power Consumption
Viewable angle 140˚ (H) 130˚ (V)
Response time (typ.) 16 ms
Brightness 250
Contrast 400:1
Video Analog /Digital
Sync. Type H/V TTL
H-Frequency 30kHz – 83kHz
V-Frequency 50-76Hz
ON Mode <45W
OFF Mode <1W
Maximum Screen Size
Power Source
Environmental
Considerations
Main Dimensions
Weight (N. W.)
Horizontal : 300mm
Vertical : 220 mm
100~240VAC,47~63Hz
Operating Temp: 5°C to 35°C
Storage Temp.: -20°C to 60°C
Operating Humidity : 20% to 80%
Packaged(W*H*D) 525mm*175mm*535mm
Unpackaged(W*H*D) 426mm*423mm*204mm
Packaged 6.8Kg Unit
Unpackaged 5.3Kg Unit
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HP VS19X Service Manual
2. LCD Monitor Description
The LCD Monitor will contain main board, power board, key board, Audio board and which house 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
Flat Panel and
CCFL backlight
Keyboard
HOST Computer
RS232 Connector
For white balance
adjustment in
factory mode
Video signal, DDC
Power Board
AC-IN
100V-240V
CCFT Drive.
Main Board
Audio board
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HP VS19X Service Manual
3. OPERATION INSTRUCTIONS
3.1 General Instructions
The control buttons are located at the left side of monitor, and press the power button to turn the monitor on or off. By
changing these settings, the picture can be adjusted to your personal performance.
The power cord should be connected and insert to adaptor.
-
Connect the video cable from the monitor to the computer VGA card.
-
Press the power button to turn on the monitor, the power indicator will light up to Green.
-
3.2 Control Buttons
CONTROL BUTTONS
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HP VS19X Service Manual
8
3.3 Adjust The Picture
HP VS19X Service Manual
1.
2.
3.
4.
5.
6.
7.
Brightness
Contrast Adjust the contrast
Image Control
Volume Adjust the volume
Color
Language Shows the language of the OSD window.
Management
Adjust the brightness.
Adjust the: z Auto Adjustment: Adjusts the main settings and produces a stable, centered
image.
z H-Position: horizontal position of the screen image. z V-Position: vertical position of the screen image. z Clock: frequency of the pixel clock to minimize vertical bar. z Phase: phase value to minimize horizontal jitters.
z 9300K: recall 9300K color z 6500K: recall 6500K color z SRGB: recall SRGB color z Custom Color: adjusts the color tint of white, and the red, green, and blue (RGB)
mix for colors.
z Power Saver: enable/disable power saving z Power On Recall: enable/disable power recall z Mode Display: enable/disable mode display z Sleep Timer: set sleep timer z Basic Menu: set to basic menu
8.
9.
10.
11.
OSD Control
Information Current setting, recommended setting, serial number, total hours, backlight hours, Exit.
Factory Reset Resets the display to original factory settings for color, brightness, phase, and clock.
Exit Exit the current OSD window.
OSD (on Screen Display) settings: adjusts the H/V position, timeout, On Screen Display window.
9
4. Input/Output Specification
4.1 Input Signal Connector
PIN MNEMONIC SIGNAL
1 RV Red Video
2 GV Green Video
3 BV Blue Video
HP VS19X Service Manual
4 NC
5 GND Ground (DDC Return)
6 RG Red GND
7 GG Green GND
8 BG Blue GND
9 +5 V +5 V (from PC)
10 SG Sync Ground
11 NC None
12 SDA DDC Data
13 HS Horizontal Sync
14 VS Vertical Sync
15 SCL DDC Clock
PC Connect detection
VGA connector layout
PIN 1
PIN 5
PIN 11
10
4.2 Factory Preset Display Modes
HP VS19X Service Manual
Prese
t
Pixel
Format
Horz Freq
(KHz)
Horz
Polarity
Vert Freq
(Hz)
Vert
Polarity
Pixel Clk
(MHz) Source
1 640 x 480 31.469 - 59.940 - 25.175 VGA
2 640 x 480 37.861 - 72.809 - 31.500 VESA
3 640 x 480 37.500 - 75.000 - 31.500 VESA
4 720 x 400 31.469 - 70.087 + 28.322 VGA
5 800 x 600 37.879
+
60.317 + 40.000 VESA
6 800 x 600 48.077 + 72.188 + 50.000 VESA
7 800 x 600 46.875 + 75.000 + 49.500 VESA
8 832 x 624 49.726 ± 74.551 ± 57.284 MAC
9 1024 x 768 48.363 - 60.004 - 65.000 VESA
10 1024 x 768 56.476 - 70.069 - 75.000 VESA
11 1024 x 768 60.023 + 75.029 + 78.750 VESA
12 1152 x 870 68.68 - 75.06 - 100.000 Mac
13 1152 x 900 71.71 - 76.05 - 105.561 Sun
14 1280 x 1024 63.98 + 60.02 + 108.000 VESA
15 1280 x 1024 79.97 + 75.02 + 135.000 VESA
4.3 Power Supply Requirements
PARAMETER RANGE
AC Input Voltage 90 to 265V
AC Input Frequency 47 to 63 Hz
Inrush Current 50A MAX AT 220VAC and 30A AT 120VAC
Leakage Current 5 mA MAX at 120VAC
Power Consumption ≤45W
11
5 PANEL SPECIFICATION
5.1 General Feature
The following items are characteristics summary on the table under 25 condition:℃
ITEMS Unit SPECIFICATIONS
HP VS19X Service Manual
Screen Diagonal [mm]
Active Area [mm]
Pixels H x V
Pixel Pitch [mm]
Pixel Arrangement
Display Mode
White Luminance ( Center ) [cd/m2] 270 (center, Typ) @ 7mA
Contrast Ratio
Optical Response Time [msec]
Color Saturation
Nominal Input Voltage VDD [Volt] +5.0 V
Power Consumption
(VDD line + CCFL line)
Weight [Grams] 2700 (Max)
Physical Size [mm]
Electrical Interface
[Watt]
480 (19.0" )
376.32 (H) x 301.06 (V)
1280(x3) x 1024
0.294 (per one triad) x 0.294
R.G.B. Vertical Stripe
Normally White
550 : 1 (Typ)
8 ms(Typ, on/off)
72% NTSC
28W(Typ)
(w/o Inverter, All black pattern)
396 (H) x 324 (V) x 18 (D)(Typ)
Dual channel LVDS
Support Color
Temperature Range
Operating [oC] 0 to +50
Storage (Shipping) [oC] -20 to +60
TCO’03 compliance
Surface Treatment
RoHS
16.2M colors (RGB 6-bit data+FRC data)
TCO’03 compliance
Hard-coating (3H), Non-Glare treatment
RoHS Compliance
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HP VS19X Service Manual
5.2 Optical Characteristics
The optical characteristics are measured under stable conditions at 25 (Room Temperature):℃
Item Unit Conditions Min. Typ. Max.
Viewing Angle [degree]
[degree]
[degree]
[degree]
Contrast ratio
Response Time [msec] Raising Time - 5.6 8.4
Color / Chromaticity
Coordinates (CIE)
Color Coordinates (CIE) White
[msec] Falling Time - 2.4 3.6
[msec] Rising + Falling - 8 12
Horizontal (Right)
CR = 10 (Left)
Vertical (Up)
CR = 10 (Down)
Normal Direction 350 550
Red x 0.604 0.634 0.664
Red y 0.324 0.354 0.384
Green x 0.257 0.287 0.317
Green y 0.591 0.621 0.651
Blue x 0.108 0.138 0.168
Blue y 0.047 0.077 0.107
White x 0.283 0.313 0.343
White y 0.299 0.329 0.359
65 65 70 70
70 55 75 60
--
--
White Luminance at CCFL
7.0mA (central point)
Luminance Uniformity [%]
Crosstalk (in75Hz) [%]
Flicker DB
[cd/m2]
215 270 -
70 75 -
1.5
-20
13
6. Block Diagram
6.1 Monitor Exploded View
HP VS19X Service Manual
14
6.2 Software Flow Chart
2
10
12
6 4 3
8
9 14
11
13
1
16
1
19
18
1
HP VS19X Service Manual
1) MCU initialize.
2) Is the eeprom blank?
3) Program the eeprom by default values.
4) Get the PWM value of brightness from
eeprom. Check the pin PANEL1 and PANEL2
to tell which panel to get with it.
5) Is the power key pressed?
5
Turn on the LED and set it to green color.
Scalar initializes.
any signals coming?
digital port?
7
6) Clear all global flags.
7) Are the AUTO and SELECT keys pressed?
8) Enter factory mode.
9) Saving the power key status into eeprom.
10) In standby mode?
11) Update the lifetime of back light.
12) Check the analog and digital port, are there
13) Does the scalar send out a interrupt request?
14) Wake up the scalar.
15) Are there any signals coming from analog or
16) Display " No Input Signal " 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?
5
7
15
6.3 Electrical Block Diagram
6.3.1 Scalar Board Block Diagram
EEPROM
24C16
(U602)
HP VS19X Service Manual
LCD Interface
(CN503)
MCU
W78E65P-40
(U601)
OSD Control
Interface
(CN602)
EPR_SDA
EPR_SCL
MST8116B
(Include SCALAR, ADC, OSD)
(U401)
RXD
TXD
DB15_SDA,
RGB
D-Sub
Connector
(CN301)
DB15_SCL
H sync
V sync
16
EEPROM
24C02
(U301)
6.3.2 Inverter / Power Board Block Diagram
Inverter Block Diagram
HP VS19X Service Manual
17
HP VS19X Service Manual
Power Block Diagram
18
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