Fujitsu Siemens Computers FSC B15-1A Service Manual

FSC B15-1A Service Manual

SERVICE MANUAL

15” LCD Monitor

FSC B15-1A

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 RE LIABILITY FOR CHANGES, ERRORS OR OMISSIONS.

FSC B15-1A Service Manual

Table of Contents

Table of Contents ---------------------------------------------------------------------------- 02

Revision List ----------------------------------------------------------------------------------- 03

1. Monitor Specification ---------------------------------------------------------------------04

2. LCD Monitor Description ---------------------------------------------------------------05

3. Operation Instructions --------------------------------------------------------------------06

3.1 General Instructions ------------------------------------------------------------------06

3.2 Control Button -------------------------------------------------------------------------06

3.3 Adjusting The Picture ----------------------------------------------------------------07

4. Input/Output Specification ---------------------------------------------------------------10

4.1 Input Signal Connector --------------------------------------------------------------10

4.2 Factory Preset Display Modes -----------------------------------------------------10

4.3 Power Supply Requirements -------------------------------------------------------11

4.3.1 Input Requirements ------------------------------------------------------------11

4.3.2 Output Requirements --------------------------------------------------------11

4.4 Panel Specification ---------------------------------------------------------------12

4.4.1 Panel Feature --------------------------------------------------------------------12

4.4.2 Display Characteristics ---------------------------------------------------------12

4.4.3 Optical Characteristics --------------------------------------------------------12

4.4.4 Parameter guide line for CCFL Inverter ------------------------------------13

5. Block Diagram -----------------------------------------------------------------------------13

5.1 Monitor Exploded View -------------------------------------------------------------13

5.2 Software Flow Chart ------------------------------------------------------------------14

5.3 Electrical Block Diagram -------------------------------------------------------------16

FSC B15-1A Service Manual

5.3.1Main Board -----------------------------------------------------------------------16

5.3.2 Inverter/Power Board -----------------------------------------------------------17

6. Schematic -----------------------------------------------------------------------------------19

6.1 Main Board --------------------------------------------------------------------------19

6.2 Inverter/Power Board ----------------------------------------------------------------22

6.3 KeyPad Board -------------------------------------------------------------------------23

7. PCB Layout ---------------------------------------------------------------------------------24

7.1 Main Board -----------------------------------------------------------------------------24

7.2 Inverter/Power Board ----------------------------------------------------------------26

7.3 Keypad Board -------------------------------------------------------------------------27

8. Maintainability ------------------------------------------------------------------------------27

8.1 Equipments and Tools Requirements --------------------------------------------27

8.2 Trouble Shooting ----------------------------------------------------------------------28

8.2.1 Main Board -------------------------------------------------------------------------28

8.2.2 Power/Inverter Board ------------------------------------------------------------31

8.2.3 Key pad Board -------------------------------------------------------------------33

9. White-Balance, Luminance Adjustment ---------------------------------------------34

10. EDID Content ------------------------------------------------------------------------------35

11. BOM List ----------------------------------------------------------------------------36～50

FSC B15-1A Service Manual

1. MONITOR SPECIFICATIONS

Driving system TFT Color LCD

Size 38.1cm(15.0")

Pixel pitch 0.297mm( H )x 0.297mm( V )

Viewable angle 130˚ (H) 90˚ (V)

LCD Panel

Response time (typ.) 25 ms

Video Analog

Sync. Type H/V TTL Separate and Composite Sync.

H-Frequency 30kHz – 61kHz

Input

V-Frequency 56-76Hz

Display Colors

Over 16 million Colors

Dot Clock

≦100MHz

Max. Resolution

1024 x 768

Plug & Play

VESA DDC2BTM

ON Mode

<35W

Power Consumption

OFF Mode

<1W

Maximum Screen Size

Horizontal : 12.0”(304.128mm) Vertical : 9.0”(228.096mm)

Power Source

90~264VAC,47~63Hz

Environmental

Considerations

Operating Temp: 5°C to 40°C

Storage Temp.: -5°C to 40°C

Operating Humidity : 10% to 85%

Packaged 3.8Kgs Unit Weight (N. W.)

Unpackaged 5.5Kgs Unit

FSC B15-1A Service Manual

2. LCD MONITOR DESCRIPTION

The LCD MONITOR will contain an main board, an inverter/power board, keypad board and internal

adapter which house the flat panel control logic, brightness control logic and DDC.

The Inverter board will drive the backlight of panel and the DC-DC conversion.

The Adapter will provides the 12V DC-power to inverter/power board.

Power board

(

include: adapter, Inverter)

Flat Panel and

CCFL backlight

Main Board

Keyboard

RS232 Connector

For white balance

HOST Computer

CCFT Drive.

AC-IN

90V-264V

Video signal, DDC

Monitor Block Diagram

FSC B15-1A Service Manual

3. OPERATING INSTRUCTIONS

3.1 GENERAL INSTRUCTIONS

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 CONTROL 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: The Left/Right Button is used to control the monitor functions. Press to switch functions or adjust settings.

- Auto Adjust Key:

The Auto Adjust Key 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.

1.Buttons for the OSD menu (On-Screen-display)

2.Power indicator

3.ON/OFF switch

Control Buttons

FSC B15-1A Service Manual

3.3 ADJUSTING THE PICTURE

To set the OSD menu, perform the following steps:

Briefly press the SELCT/MENU button to activate the OSD menu.

The main menu appears on the screen with icons for the setting functions.

The first symbol (Brightness/Contrast) is highlighted.

necessary, press the 6 or 5 button to mark another icon (e.g. Image adjust).

Press the SELECT/MENU button to select the highlighted icon.

The corresponding setting window (here: Image Adjust) is displayed.

The first symbol (H-Position) is highlighted.

If necessary, press the 6 or 5 button to mark another function.

Press the SELECT/MENU button to select the highlighted function.

Press the 6 or 5 button to adjust the value for the selected function.

Press the EXIT/AUTO button to exit the function. If necessary, press the button

6or 5to mark another function or press the EXIT/AUTO button to return to

the main menu.

All changes are stored automatically.

If you want to change other settings, select the corresponding function from the OSD main menu.

All possible adjustments of the main menu are described in the following.

FSC B15-1A Service Manual

Adjusting the brightness and contrast

Calling the Brightness / Contrast setting window.

Brightness Setting the brightness of the display

With this function you change the brightness of the background

lighting.

Contrast Setting the contrast of the display

With this function you modify the contrast of bright colour tones.

Auto Level Setting the brightness of the display

With this function you can automatically set the contrast.

Adjusting size and position

Calling the Image adjust setting window

H-Position Adjusting the horizontal position

With this function you move the picture to the left or to the right.

V-Position Adjusting the vertical position

With this function you move the picture up or down.

Clock Setting synchronisation

With this function you adjust the picture width to eliminate vertical

picture disturbances.

Phase Eliminating picture interference

With this function you fine-tune your monitor to eliminate picture

interference.

Adjusting the volume

Calling the Audio setting window

Volume Setting the volume for playback with the integrated loudspeakers

Mute Switching the loudspeakers off or on

Setting colour temperature and colours

Calling the Colour setting window

Selecting the colour temperature

The "warmth" of the screen colours is set using the colour temperature.

The colour temperature is measured in K (= Kelvin). You can select

from 6500 K, 9300 K, Native and Custom Colour.

FSC B15-1A Service Manual

Native = Original colour of the LCD display

Custom colour = Setting user-defined colours

In the user-defined setting you can change the colour ratios of the

basic colours (red, green, blue) as required.

Setting display of the OSD menu

Calling the OSD Setup setting window

Language Setting language for the OSD menu

With this function you choose between English (default setting),

French, German, Italian and Spanish as the language for the OSD

menu.

OSD

H-Position

Setting the horizontal position of the OSD menu

With this function you move the OSD menu to the left or to the right.

OSD

V-Position

Setting the vertical position of the OSD menu

With this function you move the OSD menu up or down.

OSD

Timeout

Setting the display duration of the OSD menu

With this function you select a value from 10 to 120 seconds.

If the set time expires without a setting being made, the OSD menu is

automatically faded out.

Setting functions in the "Advanced " menu

Calling the Advanced setting window

Resolution

Notifier

Displaying monitor data

The optimum resolution for this monitor is 1024 x 768 pixels. With the

function activated (On), a message appears on the screen after approx.

30 seconds if a different resolution is set.

Change the resolution to 1024 x 768 to achieve optimum picture quality.

With the function deactivated (Off), no message appears.

Factory

Recall

Activating the factory settings

With this function all settings are reset to the factory settings without

prompting for confirmation.

The Auto Processing message is displayed.

Displaying information

Calling the Information setting window

With this function the model designation, serial number, resolution, H/V

frequency, input signal and polarity of the synchronisation signal are

displayed.

FSC B15-1A Service Manual

4. Input/Output Specification

4.1 Input Signal Connector

Analog D-SUB Connector

Pin Meaning Pin Meaning

1 Video input red 9 +5 V (DDC)

2 Video input green 10 Sync. ground

3 Video input blue 11 Ground

4 Ground 12 DDC-Data

5 Ground 13 H. sync

6 Red video ground 14 V. sync

7 Green video ground 15 DDC Clock

8 Blue video ground

4.2 Factory Preset Display Modes

The following are the most frequently used of the preset operating modes:

Horizontal frequency Refresh rate Screen resolution

31.5 kHz

37.5 kHz

37.9 kHz

46.9 kHz

48.4 kHz

60.0 kHz

70 Hz

60 Hz

75 Hz

60 Hz

75 Hz

60 Hz

75 Hz

720 x 400

640 x 480

800 x 600

1024 x 768

For ergonomic reasons, a screen resolution of 1024 x 768 pixels is recommended. Because of the

technology used (active matrix) an LCD monitor provides a totally flicker-free picture even with a refresh

rate of 60 Hz.

FSC B15-1A Service Manual

4.3 Power Supply Requirements

4.3.1 Input Requirements

PARAMETER RANGE CONDITION

Input Voltage 90 to 264VAC RMS Universal input full range

Input Frequency 47 Hz to 63 Hz 110V AC 60Hz; 220V AC 50 Hz

Less than 2.0 Amps RMS

Input voltage 100 VAC RMS ; 60 Hertz. Parameter must be reached within 3 seconds of turn-on. Input Current

Less than 1.0 Amps RMS

Input voltage 220 VAC RMS ; 50 Hertz. Parameter must be reached within 3 seconds of turn-on.

Input Power Less than 75 Watts

Power factor > 0.5

Input voltage 120 VAC RMS ; 60 Hertz

Less than 30 A peak

Input voltage 100 VAC RMS ; 60 Hertz at all Phase(0, 90, 180, 270 degree)

Inrush Current

Less than 50 A peak

Input voltage 240 VAC RMS ; 50 Hertz at all Phase(0, 90, 180, 270 degree)

Input Fusing

Fuse should be located internal to the adapter, easily accessible when the cover is removed

Fuse must be UL/CSA approved. Fuse value must no have to change for 115 VAC or 230 VAC operation

Leakage Current Less than 3.5 mA Input voltage 240 Volts RMS ; 50 Hertz

Primary to secondary

1.5KVAC for 1 Minute(leakage current 10mA)

1.8KVAC for 1 Minute(leakage current 10mA)

3.0KVAC for 1 Minute(leakage current 10mA) without Y-cap & Coupling cap.

Hi-Pot

Primary to Saft Ground

1.5KVAC for 1 Minute(leakage current 10mA)

1.8KVAC for 1 Minute(leakage current 10mA)

4.3.2 Output Requirements

PARAMETER RANGE CONDITION

DC Out 12VDC ± 5% Min 0A Max 3.75A

Load Regulation 12.0V(12.12V) ± 5% 11.4 to 12.6VDC

Dynamic Load

Regulation

Any frequency up to 250Hz(duty

50%)

±5% for 10% to 100%, 100% to 10% load

change for

+12Vdc

Ripple & noise 170mVpp at 12VDC Input voltage : 100VAC at 60Hz 240VAC at

50Hz

* Ripple and noise are measured.

Output current

protection

less than 7.0A, more than 12.0A

at 12.0VDC

Current exceeds maximum rateing more than

20%

Leakage Current Less than 0.25 mA Input voltage 100 Volts RMS ; 50 Hertz

Less than 0.5 mA Input voltage 240 Volts RMS ; 50 Hertz

FSC B15-1A Service Manual

4.4 PANEL SPECIFICATION （SEC XH-L01）

4.4.1 Panel Feature

-High contrast ratio, high aperture structure

-Wide viewing angle

-High- speed response

-XGA (1024 x 768 pixels) resolution

-Display 16.2M colors

-Low power consumption

-4 CCFTS (Cold Cathode Fluorescent Tube)

-DE (Data Enable) only mode

-LVDS interface with 1 pixels/clock

4.4.2 Display Characteristics

Items Specification Unit

Display Area 304.1(H) x 228.1(V) (15.0 inch diagonal) mm Driver element a-Si TFT active matrix Display color 16.2M Colors Number of pixels 1024 x 768 pixel Pixel Arrangement RGB vertical stripe Pixel pitch 0.297(H) x 0.297(W) mm Display Mode Normally White Surface treatment Haze 25, Anti-glare & Hard-Coating (3H)

4.4.3 Optical Characteristics

The optical characteristics are measured under stable conditions at 25℃ (Room Temperature):

Ta=25± 2℃, Voo=3.3V,fv=60Hz,fDCLK=65MHz,IL=6.0mArms

Item Symbol Conditions Min. Typ. Max. Unit Note

Contrast Ratio (Center of screen)

C/R 200 300 -

(1)(2)(4)

Rising

- 5 -

Response Time

Falling Tf - 20 -

msec (1)(3)

Luminance of White (Center of screen)

YL 200 250 - Cd/m2

Rx 0.598 0.628 0.658

Red

Ry 0.323 0.353 0.383 Gx 0.260 0.290 0.320

Green

Gy 0.565 0.595 0.625

Bx 0.114 0.144 0.174

Blue

By 0.058 0.088 0.118

Wx 0.274 0.304 0.334

Color Chromaticity (CIE 1931)

White

ψ=0

θ=0

Normal

Viewing

Angle

0.295 0.325 0.355

ΘL

65 70 -

Hor

ΘR

65 70 -

ψH

50 55 -

Degree

Viewing Angle

Ver

ψL

CR≧10

55 60 -

(1)(4)

Brightness Uniformity BUNI - - 28

% (5)

FSC B15-1A Service Manual

4.4.4 Parameter guide line for CCFL Inverter

The back-light system is an edge-lighting type with 4 CCFTS (Cold Cathode Fluorescent Tube)

The characteristics of two lamps are shown in the following tables Ta =2 5± 2℃

ITEM SYMBOL MIN TYP MAX UNIT NOTE

Lamp Current IL 3.0 6.0 6.5 mArms (1)

Lamp Voltage VL - 665 - Vrms

IL=6.0

mArms

Frequency fL 40 - 60 KHz (2)

1220(25℃)

Startup Voltage Vs - -

1710(0℃)

Vrms (3)

Note: The inverter must have a symmetric output voltage waveform and be designed on the basis of the

modularized lamp.

5. Block Diagram

5.1 Monitor Exploded View

FSC B15-1A Service Manual

5.2 Software Flow Chart

643

141113

1516

1719

FSC B15-1A Service Manual

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.

Scaler initialize.

10) In standby mode ?

11) Update the life time of back light.

12) Check the analog port, are there any signals coming ?

13) Does the scalar send out a 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 afte

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 ?

+ 35 hidden pages

Fujitsu Siemens Computers FSC B15-1A Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual