Sony HS75 Service Manual

HS75 Sony

Service Manual

TFT LCD COLOR COMPUTER DISPLAY

SONY

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

HS75 Sony

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

1. Precaution

Warning on power connections

HS75 Sony

Installation

Handing the LCD screen

Maintenance

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Transportation

2. Specification

2.1 Product character

HS75 Sony

Driving system TFT LCD

Size 17.0"

Type CLAA170EA

Pixel pitch 0.264mm(H) x 0.264mm(V)

LCD Panel

Input signals

Power consumption

Power supply AC voltage 100~240VAC,50~60Hz

Viewing angle 140(H) 130(V) (CR>10)

Luminance

Contrast Ratio 500:1 (typ)

Response time 12ms (typ)

Display colors 16.2 million Colors

Max dimension

R G B Analog 0.7Vp-p

H/V separate TTL level

Horizontal frequency 28kHz–80kHz (Aalog)

Vertical rate 48-75Hz (Aalog)

Recommend resolution 1280 x 1024@60HZ

Normal operation ≤45W

Active off (deep sleep) ≤1W

Power off

300 cd/㎡ (typ)

Horizontal: 337.920mm

Vertical: 270.336mm

≤1W

Operating condition

Temperature 5-35°C

Humidity 10-80%

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

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6. Red GN D 14. V e r t i c a l S ync

7. Green GND 15. SCL

8. Blue GND

Sensor for PC

13. Horizontal Sync

VGA Connector layout

15 6

11 15

2.3 Factory preset mode

HS75 Sony

Resolution Frequency (KHz) Vertical (Hz)

720 × 400 31.469 70.087 640 × 480 31.469 59.940 640 × 480 35.000 66.667 640 × 480 37.500 75.000 720 × 480 35.200 60.000

800 × 600 35.156 56.250 800 × 600 37.879 60.317 800 × 600 48.077 72.188 800 × 600 46.875 75.000 800 × 600 49.725 74.551

1024 × 768 48.363 60.004 1024 × 768 56.476 70.069 1024 × 768 60.023 75.029 1024 × 768 60.2 75

Clock (MHZ)

28.322

25.175

30.240

31.500

31.505

36.000

40.000

50.000

49.500

57.283

65.000

75.000

78.750

80.000 1152 × 864 67.5 75 1152 × 870 68.9 75 1152 × 900 61.8 66 1152 × 900 71.7 76 1170 × 584 31.2 50 1280 × 960 60.0 60

1280 × 1024 63.981 60.020 1280 × 1024 79.976 75.025

108.000

100.000

92.940

105.590

46.200

108.000

108.00

135.00

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:

HS75 Sony

Power Switch:

Menu Button:

(Arrow) Button:

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.

This button displays or close the main menu.

These buttons are used to select the menu items make adjustments.

OK Button:

Button:

This button selects the item or executes the settings in the menu.

This button is used to change the brightness of the screen.

3.3 Common adjustment

NO Icon Tag Description

Backlight Adjust the brightness of the backlight

Contrast Adjust the picture contrast

Brightness Adjust the picture brightness (black level)

Screen Adjust the picture’s sharpness or its centering

Color Adjust the color temperature of the picture

Gamma Change the picture’s color shade settings

Sharpness

Menu position Change the on screen menu position

Language Chance the language used on menus or messages

Reset Reset the adjustments to the default settings

Menu lock

Lock the control of buttons to prevent accidental adjustments or

Adjust to sharpen the edge of images

resetting

Navigating the menu

HS75 Sony

Adjustment steps of each menu

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+ 44 hidden pages