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
PUBLICA TION AND DISCLAIMS RELIABILITY FOR CHANGES, ERRORS OR OMISSIONS.
MANUFACTURE DATA: Dec-29-2004
HP VS15 Service Manual
Table of Contents
Table of Contents ---------------------------------------------------------------------------------- 02
Revision List ---------------------------------------------------------------------------------------- 04
38.1cm (15”) a-si TFT Active matrix LCD panel, 0.297mm dot pitch
Scalar chipset: MST TSV15AK
Microprocessor controlled scan technology
450:1 Typic al Contrast Ratio and 250-nits typical Brightness
Response time 16ms and Viewing Angle 130(Horizontal) and 100(Vertical)
11 factory presets, user mode 10
Vertical refresh rate 50Hz to 76Hz; Horizontal frequency 30kHz to 60kHz
Resolutions: 640 x 480 up to 1024 x768
Power Internal AC100V-240V
Tilt -5° to 30°
CE mark
TCO 03 mark
VESA DPMS compliant
VESA DDC2B compliant and DDC/CI interface.
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.
Power Board
Monitor Block Diagram
CCFT Drive.
Main Board
Audio board
Keyboard
Flat Panel and
CCFL backlight
RS232 Connector
For white balance
adjustment in
factory mode
AC-IN
100V-240V
HOST Computer
5
Video signal, DDC
HP VS15 Service Manual
3. Operation Instructions
3.1 General Instructions
Press the power button to turn the monitor on or off. The other control buttons are located on the
side of the front panel. 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.
-
6
3.2 Control Buttons
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3.3 Adjust the Picture
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1.
r
Brightness
HP VS15 Service Manual
Adjust the brightness.
2.
3.
4.
5.
6.
7.
Contrast Adjust the contrast
Adjust the:
z Auto Adjustment: Adjusts the main settings and produces a stable,
Image
Control
Volume Adjust the volume
Color
Language Shows the language of the OSD window.
Management
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 colo
z 6500K: recall 6500K color
z SRGB: recall SRGB color
z Custom Color: adjust s 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
Factory
Reset
Exit Exit the current OSD window.
OSD (on Screen Display) settings: adjusts the H/V position, timeout, On
Screen Display window.
Current setting, recommended setting, serial number, total hours,
backlight hours, Exit.
Resets the display to original factory settings for color, brightness,
phase, and clock.
4. Input/Output Specification
4.1 Input Signal Connector
PIN MNEMONIC SIGNAL PIN MNEMONICSIGNAL
1 RV Red Video 9 +5 V +5 V (from PC)
2 GV Green Video 10 SG Sync Ground
3 BV Blue Video 11 NC
4 NC
PC Connect detection
12 SDA DDC Data
None (Reserved for
Factory Use)
5 GND
6 RG Red GND 14 VS Vertical Sync
7 GG Green GND 15 SCL DDC Clock
8 BG Blue GND
Ground (DDC Return)
13 HS Horizontal Sync
9
VGA connector layout
HP VS15 Service Manual
PIN 1
PIN 11
PIN 5
4.2 Factory Preset Display Modes
Factory Pre-set Video Input Modes
Pre-set Pixel Format
1 640 x 480 31.5 60.0
2 640 x 480 37.9 72.0
3 640 x 480 37.5 75.0
4 720 x 400 31.5 70.0
5 800 x 600 37.9 60.0
6 800 x 600 48.1 72.0
Horizontal
Frequency (kHz)
Vertical Frequency
(Hz)
7 800 x 600 46.9 75.0
8 832 x 624 49.7 75.0
10
9 1024 x 768 48.4 60.0
10 1024 x 768 56.5 70.0
11 1024 x 768 60.0 75.0
4.3 Power Supply Requirements
PARAMETER RANGE
AC Input Voltage 90 to 264V
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 26W
HP VS15 Service Manual
5. PANEL SPECIFICATION
5.1 General Feature
SUMSANG LTM150XO-LO1
11
CPT CLAA150XP02
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5.2 Optical Characteristics
SUMSANG LTM150XO-LO1
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CPT CLAA150XP02
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6. Block Diagram
6.1 Monitor Exploded View
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6.2 Software Flow Chart
2
10
12
6 4 3
8
9
14
11
13
1
16
1
19
18
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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.