HP vs17 User manual

SERVICE MANUAL
17” LCD Monitor
VS17 Series
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.
MANUFACTURE DATA: Jan-03-05

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Table of Contents
Table of Contents ---------------------------------------------------------------------------------- 02
Revision List --------------------------------------------------------------------------------------- 04
1.Product Feature ---------------------------------------------------------------------------------05
2.LCD Monitor Description -----------------------------------------------------------------------05
3.Operation Instructions -------------------------------------------------------------------------06
3.1General Instructions -----------------------------------------------------------------------06
3.2Control Button -------------------------------------------------------------------------------06
3.3Adjusting The Picture ---------------------------------------------------------------------08
4. Input/Output Specification -------------------------------------------------------------------- 10
4.1Input Signal Connector --------------------------------------------------------------------10
4.2 Factory Preset DisplayModes ----------------------------------------------------------11
4.3 Power Supply requirements -------------------------------------------------------------11
5.Panel Specification --------------------------------------------------------------------------12
5.1General Feature ---------------------------------------------------------------------------12
5.2Optical Characteristics --------------------------------------------------------------------13
6.Block Diagram ------------------------------------------------------------------------------------15
6.1Monitor Exploded View ------------------------------------------------------------------15
6.2Software Flow Chart ------------------------------------------------------------------------17
6.3Electrical Block Diagram -----------------------------------------------------------------18
6.3.1Scalar Board ---------------------------------------------------------------------------18
6.3.2Inverter/Power Board -----------------------------------------------------------------19
7.Schematic -----------------------------------------------------------------------------------------21

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7.1 For LG Panel (Scaler:TSU16AK) ---------------------------------------------------------21
7.1.1Main Board -----------------------------------------------------------------------------21
7.1.2 Audio Board -----------------------------------------------------------------------------27
7.1.3 Power Board ----------------------------------------------------------------------------28
7.2 For SAMSUNG Panel (Scaler:ADE3800SXL) ------------------------------------31
7.1.1 Main Board -----------------------------------------------------------------------------31
7.1.2 Audio Board -----------------------------------------------------------------------------36
7.1.3 Power Board ----------------------------------------------------------------------------37
8.PCBLayout --------------------------------------------------------------------------------------40
8.1 Main Board ------------------------------------------------------------------------------------40
8.2 Power Board ----------------------------------------------------------------------------------42
8.3 Keypad Board -------------------------------------------------------------------------------45
9.Maintainability -----------------------------------------------------------------------------------46
9.1Equipments and Tools Requirements --------------------------------------------------46
9.2Trouble Shooting ---------------------------------------------------------------------------47
9.2.1 Main Board ------------------------------------------------------------------------47
9.2.2 Power Board ------------------------------------------------------------------------50
9.2.3 Key Pad Board -------------------------------------------------------------------52
10. White-Balance, Luminance Adjustment ------------------------------------------------ 53
11. EDID Content ------------------------------------------------------------------------------------54
12. BOM List ----------------------------------------------------------------------------------55～86
12.1 T780KSKDKHHPA -----------------------------------------------------------------55～70
12.2 T780KG4DKHHPA -----------------------------------------------------------------71～86

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Revision List
Revision Date Change Description
A00 Jan-03-05 Initial release

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1. Product Feature
43.2cm (17”) a-si TFTActive matrix LCD panel, 0.264mm dot pitch
Scalar chipset: ADE3800SXL/TSU16AK
Microprocessor controlled scan technology
15 factory presets, 10 user modes
Vertical refresh rate 50Hz to 76Hz; Horizontal frequency 30kHz to 83kHz
Resolutions: 1280x1024/75Hz
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.
Video signal, DDC
Power Board
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
Monitor Block Diagram
Audio board

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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

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3.3 Adjust the Picture

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1. Brightness
Adjust the brightness.
2. Contrast Adjust the contrast
3. Image Control
Adjust the:
zAuto Adjustment: Adjusts the main settings and produces a stable,
centered image.
zH-Position: horizontal position of the screen image.
zV-Position: vertical position of the screen image.
zClock: frequency of the pixel clock to minimize vertical bar.
zPhase: phase value to minimize horizontal jitters.
4. Volume Adjust the volume
5. Color
z9300K: recall 9300K colo
r
z6500K: recall 6500K color
zSRGB: recall SRGB color
zCustom Color: adjusts the color tint of white, and the red, green, and
blue
(
RGB
)
mix for colors.
6. Language Shows the language of the OSD window.
7. Management
zPower Saver: enable/disable power saving
zPower On Recall: enable/disable power recall
zMode Display: enable/disable mode display
zSleep Timer: set sleep timer
zBasic Menu: set to basic menu
8. OSD Control OSD (on Screen Display) settings: adjusts the H/V position, timeout, On Screen Display window.
9. Information Current setting, recommended setting, serial number, total hours, backlight hours, Exit.
10. Factory
Reset Resets the display to original factory settings for color, brightness, phase, and clock.
11. Exit Exit the current OSD window.

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4. Input/Output Specification
4.1 Input Signal Connector
PIN MNEMONIC SIGNAL
1 RV Red Video
2 GV Green Video
3 BV Blue Video
4 NC
PC Connect detection
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
VGA connector layout
PIN 1 PIN 5
PIN 11

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4.2 Factory Preset Display Modes
Preset Pixel Format
Horz Freq
(KHz) Vert Freq (Hz)
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
7 800 x 600 46.9 75.0
8 832 x 624 49.7 75.0
9 1024 x 768 48.4 60.0
10 1024 x 768 56.5 70.0
11 1024 x 768 60.0 75.0
12 1152 x 870 68.7 75.6
13 1152 x 900 71.7 76.0
14 1280 x1024 63.9 60.0
15 1280 x1024 80.0 75.0
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
Power consumption <=37W
Leakage Current < 500 micro amps at an input of 120 VoltsAC.

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5. Panel Specification
5.1 General Feature

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5.2 Optical Characteristics
SAMSUNG LTM170EU-L11

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LG LM170 E1-A5KE

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6. Block Diagram
6.1 Monitor Exploded

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6.2 Software Flow Chart
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?
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. Turn on the LED and set it to
green color. Scalar initializes. In standby
mode?
Update the lifetime of back light.
10) Check the analog and digital port, are
there any signals coming?
11) Does the scalar send out an interrupt
request?
12) Wake up the scalar.
13) Are there any signals coming from
analog or digital port?
Display " No Input Signal " message.
And go into standby mode after the
message disappear.
14) Program the scalar to be able to show
the coming mode.
15) ProcesstheOSDdisplay.
16) Read the keyboard. Is the power key
pressed?
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
1
5
Y
N
16
1
7
19
Y
N
18

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6.3 Electrical Block Diagram
6.3.1 Scalar Board Block Diagram

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6.3.2 Inverter / Power Board Block Diagram
Inverter Block Diagram

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Power Block Diagram