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.

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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 o
f
turn-on.Input Current
Less than 1.0 Amps RMS
Input voltage 220 VAC RMS ; 50 Hertz.
Parameter must be reached within 3 seconds o
f
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 12.0
A
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

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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 Tr - 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 Wy
ψ=0
θ=0
Normal
Viewing
Angle
0.295 0.325 0.355
ΘL 65 70 -
Hor ΘR 65 70 -
ψH 50 55 -
Degree
s
Viewing Angle
Ver
ψL
CR≧10
55 60 -
(1)(4)
Brightness Uniformity BUNI - - 28 % (5)

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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=25±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

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5.2 Software Flow Chart
1
2
N
Y
5
Y
N
10
Y
N
12
Y
N
7
Y
N
6
4
3
8
9
14
11
13
Y
N
1
5
Y
N
16
1
7
19
Y
N
18

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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
r
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 ?

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5.3 Electrical Block Diagram
5.3.1 Main Board

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5.3.2 Inverter/Power Board
Inverter Block Diagram

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Power Block Diagram

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6. Schematic
6.1 Main Board
VAA4
B3
6.MCU
onBACKLITE
ST_DET2
onPANEL_5V/3.3V
SDA
INT
CSZ
DDC_DAT
ST_DET1
SCL
HWRESET
DDC_CLK
VCPU
RXD
TXD
AD0
AD1
AD2
AD3
AUDIO_SD
EAR_L
EAR_R
OUT_L
OUT_R
B2
4.SCALER
RIN
GIN
SOG
BIN
GNDR
GNDG
GNDB
HSYNC
VSYNC
R+
R-
G-
G+
B+
B-
CLK+
CLK-
CSZ
SCL
SDA
HWRESET
INT
VOLUME
AdjBACKLITE
PA[0..9]
VCC2.5
VCC3.3
VAA1
VAA2
VAA3
VAA4
AD0
AD1
AD2
AD3
PB[0..9]
VAA3
PB[0..9]
VLCD
B6
7.AUDIO
VOLUME
AUDIO_SD
VCC12V
EAR_L
EAR_R
OUT_L
OUT_R
VCC3.3
VCPU
TOP
B
MST8031B for AOC
B
17
星期一 , 八月 25, 2003
Title
Size Document Number Rev
Date: Sheet of
B4
2.POWER
onPanel_5V/3.3V
onBACKLITE
AdjBACKLITE
VCC3.3
VCC2.5
VAA1
VAA2
VAA3
VAA4
VCC12V
VLCD
VCPU
VLCD
B5
5.PANEL INTERFACE
VLCD
PA[0..9]
PB[0..9]
VCC2.5 VCC3.3
VAA4
B1
3.INPUT
RIN
GIN
BIN
VSYNC
GNDR
GNDG
GNDB
ST_DET1 HSYNC
SOGDDC_CLK
DDC_DAT
ST_DET2
R+
R-
G-
G+
B+
B-
CLK+
CLK-
TXD
RXD
VCC2.5
VAA3VAA1
VCC12V
VAA2
VCC12V
62X115 FOR SEIMENS
PA[0..9]
MST8031B SCHEMATIC
VCPU
VAA2
VAA1
DIM
VCC12V
+
C213
47uF/16V
R204
10K 1/16W
GND
R211
10K 1/16W
D201 DIODE SCHOTTKY
R208
10K 1/16W
VAA3 4
GND
VCC5V
R205 4.7K 1/16W VCC5V+
FB201
600 OHM
R201 4.7K 1/16W
Brightness
+
C211
47uF/16V
VCC2.5 4
VCC5V
VAA3
VCC3.3
R206
10K 1/16W
C216
0.1uF
+
C209
47uF/16V
VCPU
VAA2 4
ON_OFF
+
C215
47uF/16V
C207
0.1uF
R209
NC
VCPU 6
C205
0.1uF
R210
0 1/16W
D202
DIODE
SOT-223
VAA1
Q204
PMBS3904
32
1
C212
0.1uF
R203
1K 1/16W
VLCD
VAA1 4
R212 4.7K 1/16W
C210
0.1uF
U202
AIC1117-33CY
1
23
ADJ
VOUTVIN
+
C206
1uF/0805
R202
10K 1/16W
VCC5V
+
C202
150uF/25V
Q203
AO3401
+
C204
150uF/25V
onBACKLITE 6
VLCD 5
Q202
PMBS3904
32
1
SOT-223
VCC5V
GND Q201
PMBS3904
32
1
VCC2.5
VCC5V
+
C208
10uF/16V
onPanel_5V/3.3V6
C201
0.1uF
U201
RT9164-25CG
3 2
1
VI VO
GND
VCC5V
VAA2
VCC12V 7
GND
AdjBACKLITE4
VCC12V
GND
VCC12V
VAA4
VCC5V
GND
CN201
CONN
2
4
6
8
10
12
1
3
5
7
9
11
VCC3.3 4
VCC5V+
VCC5V+
C214
0.1uF
C203
0.1uF
VCC3.3
R207 4.7K 1/16W
VAA4 4