Sony S95E User manual

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Service Manual
TFT LCD COLOR COMPUTER DISPLAY
SONY

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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
3.4 Adjustment ---------------------------------------------------------------------------------- 20
3.5 Service OSD ------------------------------------------------------------------------------- 21
4.Disassembly flow chart -------------------------------------------------------------------------22
4.1 Disassembly steps---------------------------------------------------------------------------22
4.2 Wiring Diagram ---------------------------------------------------------------------------26
4.3 Monitor Exploded View -------------------------------------------------------------------27
5. Circuit principle analysis --------------------------------------------------------------------28
5.1 Main board -------------------------------------------------------------------------------28
5.1.1 Block diagram ------------------------------------------------------------------28
5.1.2 Introduction of IC -------------------------------------------------------29
5.1.3 Introduction of important function -------------------------------------------------26
5.2 PWPC board -------------------------------------------------------------------------31
5.2.1 Block diagram------------------------------------------------------------------------31
5.2.2 Introduction of IC------------------------------------------------------------------32
5.2.3 Introduction of important function-------------------------------------------------33
6.Trouble shooting ---------------------------------------------------------------------40
6.1 Main board -----------------------------------------------------------------------------40
6.2 PWPC board -------------------------------------------------------------------------43
7. BOM -----------------------------------------------------------------------------------45~62
8. Schematic -------------------------------------------------------------------------------------63~69

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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 19.0"
Type M190EN04 V5
Pixel pitch (0.098 x 3 )mm(H) x 0.294mm(V)
Viewing angle 170(H) 170(V)
Luminance 300 cd/m2(typ)
Contrast Ratio 600:1 (typ)
Response time 16ms (typ)
Display colors 16.7 million Colors
LCD Panel
Max dimension Horizontal: 376.320mm
Vertical: 301.056mm
R G B Analog 0.7Vp-p
R G B Digital TMDS
H/V separate TTL level
28kHz–80kHz (Analog)
Horizontal frequency
28kHz–64kHz (Digital)
48-75Hz (Analog)
Vertical rate
60Hz (Digital)
Input signals
Recommend resolution 1280 x 1024@60HZ
Normal operation ≤50W
Active off (deep sleep) ≤1W
Power off ≤1W
Power consumption
Main power off 0W
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
1. HD 15 Signal Input Pin Assignments
NO. Description NO. Description
1. Red Video 9. +5V
2. Green Video(Sync on Green) 10. Sync Return
3. Blue Video 11. ID (GND)
4. ID(GND) 12. DDC Data
5. Sense of connection PC 13. Horizontal Sync
6. Red Video Return 14. Vertical Sync
7. Green Video Return 15. DDC Clock
8. Blue Video Return
VGA Connector layout

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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
Power Switch: When the Power button is pushed, the status shall be changed into Power On within 2
seconds. Besides, Power Switch: the picture and the green LED shall be lit. When the Power button is
pushed again, the status shall be changed into Power Off within 1 second. Besides, the picture and the
green LED shall disappear.
Menu Button: OSD window shall be displayed by pressing the “Menu” button in the Power On condition.
(Arrow) Button: These buttons are used to select the menu items make adjustments.
OK Button: This button activates the selected menu item and adjustments made using the Arrow buttons.
ECO Button: This button is used to reduce the power consumption.
Main Power Switch: This switch turns the monitor’s main power on and off.
The indication of LED:
Green — Normal On or Out of range.
Amber — Stand-By or Suspend.
Red — Power Off

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Key control:
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
6 γGamma Change the picture’s color shade settings
7 Menu position Change the on screen menu position
8 Language Chance the language used on menus or messages
9 Reset Reset the adjustments to the default settings
10 Menu lock Lock the control of buttons to prevent accidental adjustments or
resetting
A

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Adjustment steps of each menu

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3.4 Adjustment
1. Procedures of how to go to service mode.
1) Enter the service mode of this unit by turning on the power while pressing and holding the "MENU" key
simultaneously.
2) Press "MENU" key----MAINTAIN.
3) Press "OK" key to enter the service menu.
4) Select the desired function.
5) Press the "MENU" key to exit OSD.
6) Turn off the power and then turn it on again. The monitor then enters the normal mode.To enter the
service again, repeat the proceduredescribed above.
Note
W/B readjustment is required after the panel, board and microcomputer are replaced. However, be
sure to perform aging for more than 30 minutes for RGB reset before W/B adjustment.
2. Setup
1) Prepare timing and pattern data for a signal generator according to the Sony timing specifications.
2) Connect a monitor video cable to the signal generator.
3) Put Color Analyzer(ex. CA-110) 50cm away from the monitor, specify it vertically in the center of the
display, and adjust the focus to the optimum level using an eyepiece.
4) Put the monitor and Color Analyzer(ex. CA-110) in a light-shielded room.
5) Set up [SERVICE MODE] of the monitor.
3. Operation
Data is manually set to improve the productivity. The brightness, contrast, and backlight are set to 50,
70 and 100 respectively. After that, the default data of the color temperature to be adjusted is set.
4. Warm up time
Warm up for 30 minutes before performing any adjustment.