Sony HS75 User manual

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TFT LCD COLOR COMPUTER DISPLAY
SONY
Service Manual

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Table of contents
Table of contents -------------------------------------------------------------------------- 02
1. Precaution ------------------------------------------------------------------------------------------ 03
2.Specification -----------------------------------------------------------05
2.1 Product character-----------------------------------------------------------05
2.2 Interface description-----------------------------------------------------------------06
2.3 Factory preset mode ------------------------------------------------------------07
3.OSD operation --------------------------------------------------------------------------------08
3.1 Generalization ------------------------------------------------------------------------------08
3.2 Key control -------------------------------------------------------------------------08
3.3 Common adjustment --------------------------------------------------------------------- 09
4.Disassembly flow chart -------------------------------------------------------------------------22
4.1 Disassembly steps---------------------------------------------------------------------------22
5. Circuit principle analysis --------------------------------------------------------------------26
5.1 Main board -------------------------------------------------------------------------------26
5.1.1 Block diagram ------------------------------------------------------------------26
5.1.2 Introduction of IC -------------------------------------------------------27
5.1.3 Introduction of important function -------------------------------------------------27
5.2 PWPC board -------------------------------------------------------------------------30
5.2.1 Block diagram------------------------------------------------------------------------30
5.2.2 Introduction of IC------------------------------------------------------------------31
5.2.3 Introduction of important function-------------------------------------------------32
6.Trouble shooting ---------------------------------------------------------------------38
6.1 Main board -----------------------------------------------------------------------------38
6.2 PWPC board ----------------------------------------------------------------------------41
7. BOM ---------------------------------------------------------------------------------------43
8. Schematic ------------------------------------------------------------------------------------------59

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1. Precaution
Warning on power connections
Installation

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Handing the LCD screen
Maintenance
Transportation

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2. Specification
2.1 Product character
Driving system TFT LCD
Size 17.0"
Type CLAA170EA
Pixel pitch 0.264mm(H) x 0.264mm(V)
Viewing angle 140(H) 130(V) (CR>10)
Luminance 300 cd/㎡(typ)
Contrast Ratio 500:1 (typ)
Response time 12ms (typ)
Display colors 16.2 million Colors
LCD Panel
Max dimension Horizontal: 337.920mm
Vertical: 270.336mm
R G B Analog 0.7Vp-p
H/V separate TTL level
Horizontal frequency 28kHz–80kHz (Aalog)
Vertical rate 48-75Hz (Aalog)
Input signals
Recommend resolution 1280 x 1024@60HZ
Normal operation ≤45W
Active off (deep sleep) ≤1W
Power consumption
Power off ≤1W
Power supply AC voltage 100~240VAC,50~60Hz
Temperature 5-35°C
Operating condition Humidity 10-80%

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2.2 Interface description
Analog connectors
NO. Description NO. Description
1. Red Video 9. +5V
2. Green Video 10. Detect Cable
3. Blue Video 11. NC
4. GND 12. SDA
5. Sensor for PC 13. Horizontal Sync
6. Red GND 14. Vertical Sync
7. Green GND 15. SCL
8. Blue GND
VGA Connector layout
15
610
11 15

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2.3 Factory preset mode
Resolution Frequency (KHz) Vertical (Hz) Clock (MHZ)
720 × 400 31.469 70.087 28.322
640 × 480 31.469 59.940 25.175
640 × 480 35.000 66.667 30.240
640 × 480 37.500 75.000 31.500
720 × 480 35.200 60.000 31.505
800 × 600 35.156 56.250 36.000
800 × 600 37.879 60.317 40.000
800 × 600 48.077 72.188 50.000
800 × 600 46.875 75.000 49.500
800 × 600 49.725 74.551 57.283
1024 × 768 48.363 60.004 65.000
1024 × 768 56.476 70.069 75.000
1024 × 768 60.023 75.029 78.750
1024 × 768 60.2 75 80.000
1152 × 864 67.5 75 108.000
1152 × 870 68.9 75 100.000
1152 × 900 61.8 66 92.940
1152 × 900 71.7 76 105.590
1170 × 584 31.2 50 46.200
1280 × 960 60.0 60 108.000
1280 × 1024 63.981 60.020 108.00
1280 × 1024 79.976 75.025 135.00

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3.OSD operation
3.1 Generalization
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, the power indicator will light up.
3.2 Key control
Key control:

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Power Switch: To turn the display on or off, press the Power Switch upward .
The power indicator lights up in green when the display is turned on, and lights up in
orange when the monitor is in power saving mode.
Menu Button: This button displays or close the main menu.
(Arrow) Button: These buttons are used to select the menu items make adjustments.
OK Button: This button selects the item or executes the settings in the menu.
Button: This button is used to change the brightness of the screen.
3.3 Common adjustment
NO Icon Tag Description
1 Backlight Adjust the brightness of the backlight
2 Contrast Adjust the picture contrast
3 Brightness Adjust the picture brightness (black level)
4 Screen Adjust the picture’s sharpness or its centering
5 Color Adjust the color temperature of the picture
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γ Gamma Change the picture’s color shade settings
7 Sharpness
Adjust to sharpen the edge of images
8 Menu position Change the on screen menu position
9 Language Chance the language used on menus or messages
10 Reset Reset the adjustments to the default settings
11 Menu lock Lock the control of buttons to prevent accidental adjustments or
resetting
A

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Navigating the menu

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Adjustment steps of each menu

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