Fujitsu Siemens Computers FSC B15-1A User manual

FSC B15-1A Service Manual
1
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 MANU
A
L; WE CANNOT
GUARANTEE THE ACCURACY OF THIS INFORMATION AFTER THE DATE OF PUBLICATION AND
DISCLAIMS RE LIABILITY FOR CHANGES, ERRORS OR OMISSIONS.

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TableofContents
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

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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

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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 UnitWeight (N. W.)
Unpackaged 5.5Kgs Unit

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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: ada
p
ter, 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

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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

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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 6or 5button 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 6or 5button to mark another function.
Press the SELECT/MENU button to select the highlighted function.
Press the 6or 5button to adjust the value for the selected function.
Press the EXIT/AUTO button to exit the function.
If necessary, press the button6or 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.

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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.

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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.

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4. Input/Output Specification
4.1 Input Signal Connector
Analog D-SUB Connector
1
5
6
10
11
15
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
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
640 x 480
800 x 600
800 x 600
1024 x 768
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.