HP VS17T
SERVICE MANUAL
17” LCD Monitor
VS17T
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.
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HP VS17T |
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Table of Content |
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Revision List ---------------------------------------------------------------------------------------------------------------------------- |
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1.Monitor Specification -------------------------------------------------------------------------------------------------------------- |
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2.LCD Monitor Description --------------------------------------------------------------------------------------------------------- |
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3.Operation Instructions ------------------------------------------------------------------------------------------------------------ |
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3.1 |
General Instructions ------------------------------------------------------------------------------------------------------------ |
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3.2 |
Control Button ------------------------------------------------------------------------------------------------------------------- |
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3.3 Adjusting The Picture ---------------------------------------------------------------------------------------------------------- |
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4. Input/Output Specification ------------------------------------------------------------------------------------------------------ |
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4.1 |
Input Signal Connector -------------------------------------------------------------------------------------------------------- |
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4.2 |
Factory Preset Display Modes ---------------------------------------------------------------------------------------------- |
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4.3 |
Power Supply Requirements ------------------------------------------------------------------------------------------------- |
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5.Panel Specification ------------------------------------------------------------------------------------------------------------------- |
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5.1 |
General Feature ----------------------------------------------------------------------------------------------------------------- |
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5.2 |
Optical Characteristics --------------------------------------------------------------------------------------------------------- |
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6. Block Diagram ---------------------------------------------------------------------------------------------------------------------- |
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6.1 |
Monitor Exploded View ------------------------------------------------------------------------------------------------------- |
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6.2 |
Software Flow Chart ------------------------------------------------------------------------------------------------------------ |
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6.3 |
Electrical Block Diagram ------------------------------------------------------------------------------------------------------- |
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6.3.1 Scalar Board ---------------------------------------------------------------------------------------------------------------- |
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6.3.2 Inverter/Power Board ----------------------------------------------------------------------------------------------------- |
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7. Schematic ---------------------------------------------------------------------------------------------------------------------------- |
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7.1Main Board ---------------------------------------------------------------------------------------------------------------------- |
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7.2 |
Power Board -------------------------------------------------------------------------------------------------------------------- |
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8. PCB Layout -------------------------------------------------------------------------------------------------------------------------- |
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8.1 |
Main Board ----------------------------------------------------------------------------------------------------------------------- |
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8.2 |
Inverter/Power Board ----------------------------------------------------------------------------------------------------------- |
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8.3 |
Key Board ------------------------------------------------------------------------------------------------------------------------- |
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9. Maintainability ----------------------------------------------------------------------------------------------------------------------- |
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9.1 |
Equipments and Tools Requirements -------------------------------------------------------------------------------------- |
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9.2 Trouble Shooting ---------------------------------------------------------------------------------------------------------------- |
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9.2.1 Main Board --------------------------------------------------------------------------------------------------------------- |
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9.2.2 Power/Inverter Board --------------------------------------------------------------------------------------------------- |
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9.2.3 Key Pad Board ------------------------------------------------------------------------------------------------------------- |
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10. White-Balance, Luminance Adjustment --------------------------------------------------------------------------------- |
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11. Check List After Replacing LCD Main Board ---------------------------------------------------------------------------- |
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12. EDID Content ---------------------------------------------------------------------------------------------------------------------- |
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13. BOM List ----------------------------------------------------------------------------------------------------------------------------- |
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2
HP VS17T
Revision List
Version |
Date |
Revision History |
TPV Mode Name |
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A00 |
Jan-05-06 |
Initial release |
T780KS4DKHHPAP |
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3
HP VS17T
1.Monitor Specification
Items |
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Description |
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Driving system |
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TFT Color LCD |
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Panel |
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LTM170EU-L11 |
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Size |
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337.920(H) x270.336 (V) (43.2cm 17.0") |
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LCD Panel |
Pixel pitch |
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0.264mm( H )x 0.264mm( V ) |
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Viewable angle |
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140˚ (H) 120˚ (V) |
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Response time (typ.) |
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16 ms |
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Brightness |
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250 |
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Contrast |
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400:1 |
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Video |
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Analog |
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Input |
Sync. Type |
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H/V TTL |
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H-Frequency |
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30kHz – 83kHz |
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V-Frequency |
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50-76Hz |
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Display Colors |
Over 16 million Colors |
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Dot Clock |
140MHz |
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Max. Resolution |
1280 x 1024 |
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Plug & Play |
VESA DDC2BTM |
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ON Mode |
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<37W |
Power Consumption |
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Sleep Mode |
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<2W |
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OFF Mode |
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<1W |
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Power Source |
90~265VAC,47~63Hz |
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Environmental |
Operating Temp: 5°C to 35°C |
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Storage Temp.: -20°C to 60°C |
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Considerations |
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Operating Humidity : 20% to 80% |
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Main Dimensions |
Unpackaged(W*H*D) |
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379.5mm*390.6mm*203.9mm |
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Packaged(W*H*D) |
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454mm*454mm*175mm |
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Weight (N. W.) |
Packaged |
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6.5Kg Unit |
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Unpackaged |
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4.5Kg Unit |
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4
HP VS17T
2.LCD Monitor Description
The LCD Monitor will contain main board, power board, key board and an audio board 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
CCFT Drive. |
Flat Panel and |
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CCFL backlight |
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Power Board |
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Main Board |
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RS232 Connector |
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(Include adapter and inverter) |
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For white balance |
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adjustment in |
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factory mode |
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Audio board |
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Keyboard |
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AC-IN |
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Video signal, DDC |
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HOST Computer |
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110V-240V |
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3. Operation Instructions
3.1 General Instructions
Press the power button to turn the monitor on or off. The other control buttons are located at front of the 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.
3.2Control Buttons
-Power Button:
When pressed, the monitor enters the off mode, and the LED turns blank. Press again to restore normal status.
-Left / Right Button:
When the OSD show on screen, Left/Right Button are used to control the monitor functions. Press to switch functions or adjust settings. And if the OSD off, Left buttons is used to automatically set the H Position, V Position, Clock and Phase.
-Power Indicator:
Green — Power On mode. Orange — Power Saving mode. Blank — Power Off Mode.
5
HP VS17T
6
HP VS17T
3.3 Adjust the Picture
NO. |
Control |
Icons |
NO. |
Control |
Icons |
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1 |
Brightness |
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16 |
Clock Phase |
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2 |
Contrast |
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17 |
Power Saver |
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3 |
Auto Adjustment |
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18 |
Mode Display |
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4 |
Image Control |
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19 |
Power-On Status Display |
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5 |
Color |
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20 |
Sleep Timer |
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6 |
Custom Color |
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21 |
Basic Menu |
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7 |
Language |
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22 |
Advanced Menu |
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8 |
Management |
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23 |
Power On Recall |
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9 |
OSD Control |
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24 |
Horizontal OSD Position |
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10 |
Information |
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25 |
Vertical OSD Position |
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11 |
Factory Reset |
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26 |
OSD Timeout |
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12 |
Default Video Input |
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27 |
OSD Transparency |
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13 |
Horizontal Position |
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28 |
Volume |
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14 |
Vertical Position |
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29 |
Exit |
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15 |
Clock |
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7
HP VS17T
4. Input/Output Specification
4.1 Input Signal Connector
Pin |
Mnemonic |
Signal |
Pin |
Mnemonic |
Signal |
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1 |
RV |
Red Video |
9 |
+5 V |
+5 V (from PC) |
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GV |
Green Video |
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SG |
Sync Ground |
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BV |
Blue Video |
11 |
NC |
None |
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4 |
NC |
PC Connect detection |
12 |
SDA |
DDC Data |
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5 |
GND |
Ground (DDC Return) |
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HS |
Horizontal Sync |
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6 |
RG |
Red GND |
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VS |
Vertical Sync |
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7 |
GG |
Green GND |
15 |
SCL |
DDC Clock |
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8 |
BG |
Blue GND |
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VGA connector layout
PIN 1 |
PIN 5 |
PIN 11 |
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HP VS17T |
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4.2 Factory Preset Display Modes |
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Pixel |
Horz Freq |
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Horz |
Vert Freq |
Vert |
Pixel Clk |
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Preset |
Format |
(KHz) |
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Polarity |
(Hz) |
Polarity |
(MHz) |
Source |
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1 |
640 x 480 |
31.469 |
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59.940 |
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25.175 |
VGA |
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2 |
640 x 480 |
37.861 |
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72.809 |
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31.500 |
VESA |
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3 |
640 x 480 |
37.500 |
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75.000 |
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31.500 |
VESA |
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4 |
720 x 400 |
31.469 |
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70.087 |
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28.322 |
VGA |
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5 |
800 x 600 |
37.879 |
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60.317 |
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40.000 |
VESA |
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6 |
800 x 600 |
48.077 |
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72.188 |
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50.000 |
VESA |
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7 |
800 x 600 |
46.875 |
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75.000 |
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49.500 |
VESA |
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8 |
832 x 624 |
49.726 |
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± |
74.551 |
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57.284 |
MAC |
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9 |
1024 x 768 |
48.363 |
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60.004 |
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65.000 |
VESA |
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10 |
1024 x 768 |
56.476 |
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70.069 |
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75.000 |
VESA |
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11 |
1024 x 768 |
60.023 |
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75.029 |
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78.750 |
VESA |
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12 |
1152 x 870 |
68.68 |
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75.06 |
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100.000 |
Mac |
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13 |
1152 x 900 |
71.71 |
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76.05 |
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105.561 |
Sun |
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14 |
1280 x 1024 |
63.98 |
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60.02 |
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108.000 |
VESA |
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15 |
1280 x 1024 |
79.97 |
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75.02 |
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135.000 |
VESA |
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4.3 Power Supply Requirements
Parameter Arameter |
Range |
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AC Input Voltage |
90 to 265V |
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AC Input Frequency |
47 to 63 Hz |
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Inrush Current |
50A MAX AT 220VAC and 30A AT 120VAC |
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Leakage Current |
5 mA MAX at 120VAC |
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Power consumption |
≤37W |
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9
HP VS17T
5. Panel Specification
5.1 General Feature
Mechanical information
10
HP VS17T
5.2 Optical Characteristics
11
HP VS17T
6. Block Diagram
6.1 Monitor Exploded View
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G 7 |
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12G6063-1 |
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G |
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5 |
G |
5 |
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G |
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3 |
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8 |
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12
6.2 Software Flow Chart
1
Y
2
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5 N
Y
6
7 N
Y
9
10 N
Y
N 12
Y
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N |
19 |
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Y
13
HP VS17T
3
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11
13 N
Y
N
15 16
Y
17
HP VS17T
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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6.3 Electrical Block Diagram
6.3.1 Scalar Board Block Diagram
Crystal 24MHz (Y601)
MCU
MTV-512MV (U601)
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Key Board |
EEPROM |
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AT24C16 |
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Control |
(U602) |
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(CN602) |
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HP VS17T
LCD Interface
(CN503)
Scalar IC TSU56AK
(Include ADC, OSD)
(U401)
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H sync |
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V sync |
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RGB |
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Crystal |
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D-Sub |
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14.318MHz |
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Connector |
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(X401) |
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(CN301) |
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DDC_CLK, |
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DDC_DAT |
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EEPROM |
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M24C02 |
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15
HP VS17T
6.3.2 Inverter / Power Board Block Diagram
AC input |
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Bridge |
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Rectifier |
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EMI filter |
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Transformer |
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Rectifier |
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diodes |
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and Filter |
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StartCircuit: |
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R909/R910/R931 |
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CN902 |
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12V |
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Over |
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Feedback |
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PWM |
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Circuit |
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Voltage |
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5V |
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Control IC |
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Protect |
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ON/OFF
LC |
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Transformer |
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MOSFET |
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Resonance |
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Lamp
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Over |
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ON/OFF |
Feedback |
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PWM |
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Circuit |
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Voltage |
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Control |
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Control IC |
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DIM |
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16
HP VS17T
7. Schematic
7.1 Main Board
SCHEMATIC
B2 FOR HPQ2005
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B1 |
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RIN |
RIN |
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GNDR |
GNDR |
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TXD |
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GIN |
GIN |
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RXD |
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GNDG |
GNDG |
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DDC_CLK |
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SOG |
SOG |
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DDC_DAT |
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BIN |
BIN |
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GNDB |
GNDB |
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ST_DET1 |
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HSYNC |
HSYNC |
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VSYNC |
VSYNC |
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DDC_WP |
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3.INPUT |
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B3 |
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DDC_WP |
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ST_DET1 |
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DDC_CLK |
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CSZ |
CSZ |
VCPU |
DDC_DAT |
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SCL |
SCL |
RXD |
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SDA |
SDA |
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TXD |
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HWRESET |
HWRESET |
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VCPU |
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INT |
INT |
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onPANEL_5V/3.3V |
AD0 |
AD0 |
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onBACKLITE |
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AD1 |
AD1 |
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onPANEL_12V |
AD2 |
AD2 |
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AD3 |
AD3 |
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AUDIO_SD |
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ROUT+1 |
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LOUT+1 |
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OUT-L- |
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OUT-L+ |
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OUT-R+ |
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OUT-R- |
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6.MCU |
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B6 |
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5V |
VCC5V |
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OUT-R- |
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OUT-R+ |
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OUT-L+ |
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OUT-L- |
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VCC5V |
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LOUT+1 |
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5V |
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ROUT+1 |
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VCPU |
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AUDIO_SD |
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VOLUME |
VOLUME |
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VCC5V |
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GND |
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VCC3.3 |
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VCC1.8 |
7.AUDIO |
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VAA1 |
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VAA2 |
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VAA3 |
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VAA4 |
B4 |
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5V |
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GND |
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onPanel_12V |
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onBACKLITE |
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onPanel_5V/3.3V |
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VCPU |
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VCC5V |
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VCC3.3 |
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VCC1.8 |
AdjBACKLITE |
AdjBACKLITE |
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VAA1 |
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VLCD_12V VLCD |
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VAA2 |
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VAA3 |
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VAA4 |
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VLCD_12V |
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5V |
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VLCD |
4.SCALER |
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2.POWER |
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VCC1.8 |
VCC3.3 |
VAA1 |
VAA2 |
VAA3 |
VAA4 |
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VCC1.8 |
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VCC3.3 |
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VAA1 |
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VAA2 |
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VAA3 |
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VAA4 |
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B5 |
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PA[0..9] |
PA[0..9] |
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PA[0..9] |
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PB[0..9] |
PB[0..9] |
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PB[0..9] |
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GA[0..3] |
GA[0..3] |
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GA[0..3] |
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BA[0..5] |
BA[0..5] |
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BA[0..5] |
VLCD |
VLCD_12V |
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VLCD |
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ESP |
ESP |
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ESP |
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OSP |
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VLCD_12V |
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OSP |
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OSP |
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GPO[0..4] |
GPO[0..4] |
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GPO[0..4] |
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5.PANEL INTERFACE |
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Title |
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AOC SCHEMATIC FOR HPQ2005
Size |
Document Number |
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Rev |
B |
TOP |
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A |
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Date: |
Monday, September 13, 2004 |
Sheet |
1 |
of |
7 |
17