Rosewill R910E User manual

R910E Service Manual
SERVICE MANUAL
19” ABSPC Monitor
R910E Series
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 OFTHIS INFORMATION AFTER THE DATE OF
PUBLICATION AND DISCLAIMS RELIABILITY FOR CHANGES, ERRORS OR OMISSIONS.
Manufacture Date: Nov-09-04

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Table of Contents
Table of Contents ------------------------------------------------------------------------------------------------------------ 02
Revision List ------------------------------------------------------------------------------------------------------------------ 04
1.Product Feature --------------------------------------------------------------------------------------------------------------05
2. LCD Monitor Description ------------------------------------------------------------------------------------------------06
3. Operation Instructions ---------------------------------------------------------------------------------------------------07
3.1 General Instructions -------------------------------------------------------------------------------------------------07
3.2 Control Button ---------------------------------------------------------------------------------------------------------07
3.2.1 Key Control ------------------------------------------------------------------------------------------------------07
3.2.2 Key Function -----------------------------------------------------------------------------------------------------07
3.3 Adjusting The Picture -----------------------------------------------------------------------------------------------08
4. Input/Output Specification --------------------------------------------------------------------------------------------- 10
4.1 Input Signal Connector ---------------------------------------------------------------------------------------------10
4.2 Factory Preset Display Modes ------------------------------------------------------------------------------------10
4.3 Power Supply Requirements --------------------------------------------------------------------------------------11
4.4 Panel Specification ----------------------------------------------------------------------------------------------12
4.4.1 Panel Feature -----------------------------------------------------------------------------------------------12
4.4.2 Display Characteristics -------------------------------------------------------------------------------------12
4.4.3 Optical Characteristics ------------------------------------------------------------------------------------13
4.4.4 TFT Module --------------------------------------------------------------------------------------------------14
4.4.5 Backlight Unit ----------------------------------------------------------------------------------------------14
5. Block Diagram -------------------------------------------------------------------------------------------------------------15
5.1 Software Flow Chart -------------------------------------------------------------------------------------------------15
5.2 Electrical Block Diagram -------------------------------------------------------------------------------------------17

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5.2.1 Scalar Board Diagram -------------------------------------------------------------------------------------------------17
5.2.2 Inverter Board Diagram ------------------------------------------------------------------------------------------------18
6.Schematic-----------------------------------------------------------------------------------------------------------------------------19
6.1 Scalar Board --------- -------------------------------------------------------------------------------------------------------19
6.2 Inverter Board ----------------------------------------------------------------------------------------------------------------27
7. Maintainability -------- -------------------------------------------------------------------------------------------------------------28
7.1 Equipments and Tools Requirements ---------------------------------------------------------------------------------28
7.2 Trouble Shooting -----------------------------------------------------------------------------------------------------------29
7.2.1 Main Board -------------------------------------------------------------------------------------------------------------29
7.2.2 Key Pad Board ----------------------------------------------------------------------------------------------------------31
7.2.3 Inverter Board ----------------------------------------------------------------------------------------------------------32
8. White-Balance, Luminance Adjustment ---------------------------------------------------------------------------------- 33
9. BOM List --------------------------------------------------------------------------------------------------------------------35～50

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Revision List
Revision Date Change Description
A00 Nov-09-04

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1. PRODUCT FEATURE
Driving system TFT Color LCD
Size 48cm(19.0")
Pixel pitch 0.294mm(H) x 0.294mm(V)
Viewable angle 170°(H) 170°(V)
LCD Panel
Response time 25 ms (Typical)
R,G,B Analog Interface
Video
Digital Interface
Separate Sync H/V TTL
H-Frequency 24KHz – 93KHz (Analog)
Input
V-Frequency 55-85Hz (Analog)
Display Colors 16.7M Colors
Dot Clock 158MHz (Analog)
Max. Resolution 1280 x 1024 @85Hz(Analog)
Plug & Play VESA DDC1/2BTM
ON Mode <60W
EPA ENERGY STAR®
OFF Mode <5W
Audio output Rated Power 2.0W (Per channel)
D-Sub 15pin
Input Connector
DVI 24pin
Analog: 0.7Vp-p(standard),
75 OHM, Positive
Input Video Signal
Digital signal
Maximum Screen Size Horizontal: 376.32mm
Vertical: 301.056mm
Power Source 12VDC/5.0A 60W Max
Environmental
Considerations
Operating Temp: 0° to 40°C
Storage Temp: -10° to 50°C
Operating Humidity:
20% to 90%
Weight (N. W.): 5.9Kgs Unit (net)
Dimensions 432 (W) x 440 (H) x 198 (D) mm

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2. LCD MONITOR DESCRIPTION
The LCD MONITOR will contain a main board, an inverter/power board, an audio board and a keypad board which
house the flat panel control logic, brightness control logic and DDC.
The power board will provide AC to DC Inverter voltage to drive the backlight of panel and the main board chips
each voltage.
Video signal, DDC
Power board
(
Include: ada
p
ter, inverter
)
Flat Panel and
CCFL
Main Board
Keyboard
RS232 Connector For
white balance adjustment
in factory mode
HOST Computer
CCFL Drive.
AC-IN
100V-240V
Monitor Block Diagram
Audio board

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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
3.2.1 KEY CONTROL
3.2.2 KEY FUNCTION
•⑥Power Button:
Press this button to switch the monitor’s power ON or OFF.
•④MENU / ENTER:
Activate OSD menu when OSD is OFF or activate/de-activate adjustment function when OSD is ON or Exit OSD menu when
in Brightness/ Contrast OSD status.
•②Brightness / :
Adjust brightness or function adjust.
•⑦Headphone Jack
•③Contrast / :
Adjust contrast or function adjust.
•①Auto Adjust button / Exit:
1. When OSD menu is in active status, this button will act as EXIT-KEY
(EXIT OSD menu)
2. When OSD menu is in OFF, press this button for 2 seconds to activate the Auto Adjustment function.
The Auto Adjustment function is used to set the HPos, VPos, Clock and Focus.
•⑤Power Indicator:
Green — Power On mode.
Orange — Off mode.

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3.3 ADJUSTING THE PICTURE
1. Press the MENU-button to activate the OSD window. See figure 5.
2. Press or to select the desired function. See figure 5.
3. Press the MENU-button again to activate the highlighted function.
4. Press or to adjust the selected function.
Note: is used to adjust the function down & is used to adjust the function up. This is due to the orientation of the
adjustment level bar.
5. When the OSD window is active, it shows the input signal timing. The "H" stands for the horizontal frequency and "V" for the
vertical frequency.
6. To exit and save, select the exit function, or leave the monitor alone for 10 seconds. If you want to adjust another function
press MENU again and repeat steps 2-4.

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The descriptions for function control LEDS
1.
Contrast Adjust the picture contrast.
2.
Brightness Adjust the picture brightness.
3. Input Selected Input Signal source selected (select Analog or Digital input source)
4. Focus Adjust picture Focus (available in Analog mode only).
5. Clock Adjust picture Clock (available in Analog mode only).
6.
H- Position Adjust the horizontal position of the picture (available in Analog mode only).
7. V- Position Adjust the vertical position of the picture (available in Analog mode only).
8. Language Multi-Language selection
9. Scaling Mode
Stretch the picture to fit full screen, screen size ratio or native size (this function
only works when the resolution setting is lower than the native resolution of
1280x1024).
10. Red Adjusts Red intensity.
11. Green Adjusts Green intensity.
12. Blue Adjusts Blue intensity.
13. C1 (6500K) Color The color temperature for 6500°K is x=0.313, y=0.329.
14. C2 (7800K) Color The color temperature for 7800°K is x=0.296, y=0.311.
15. Reset
Clear old settings of Auto-configuration, re-activates auto-configuration and set
the color temperature to 7800°K.
16.
Exit Save user adjustment and exit OSD menu.

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4. INPUT/OUTPUT SPECFICATION
4.1 ANALOG INPUT SIGNAL CONNECTOR
PIN NO. DESCRIPTION PI N NO. DESCRIPTION
1. Red 9. +5V
2. Green 10. Detect Cable
3. Blue 11. NC
4. Ground 12. DDC-Serial Data
5. Ground 13. H-Sync
6. R-Ground 14. V-Sync
7. G-Ground 15. DDC-Serial Clock
8. B-Ground
VGA Connector layout
15
610
11 15
4.2 DVI INPUT SIGNAL CONNECTOR
Pin Meaning Pin Meaning Pin Meaning
1. TMDS Data2- 9. TMDS Data1- 17. TMDS Data0-
2. TMDS Data2+ 10. TMDS Data1+ 18. TMDS Data0+
3. TMDS Data 2/4 Shield 11. TMDS Data 1/3 Shield 19. TMDS Data 0/5 Shield
4. TMDS Data4- 12. TMDS Data3- 20. TMDS Data5-
5. TMDS Data4+ 13. TMDS Data3+ 21. TMDS Data5+
6. DDC Clock 14. +5V Power 22. TMDS Clock Shield
7. DDC Data 15. GND (For +5V) 23. TMDS Clock+
8. N.C. 16. Hot Plug Detect 24. DDC TMDS Clock-
24-Pin Color Display Signal Cable