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EN5200-ei
SERVICE MANUAL
EN5200-ei Monitor
(With NEC(30-10) PANEL)
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 DATA Oct-30-2003
EN5200-ei
Table of Contents
Table of Contents ----------------------------------------------------------------------------- 02
Revision List ------------------------------------------------------------------------------------04
1. Monitor Specification ---------------------------------------------------------------------05
2. LCD Monitor Description ---------------------------------------------------------------05
3. Operation Instructions --------------------------------------------------------------------06
3.1 General Instructions ------------------------------------------------------------------06
3.2 Control Button -------------------------------------------------------------------------06
3.3 Adjusting The Picture ----------------------------------------------------------------06
4. Input/Output Specification ---------------------------------------------------------------08
4.1 Input Signal Connector --------------------------------------------------------------08
4.2 Factory Preset Display Modes -----------------------------------------------------08
4.3 Power Supply Requirements -------------------------------------------------------09
4.3.1 Input Requirements ------------------------------------------------------------09
4.3.2 Output Requirements --------------------------------------------------------10
4.4 Panel Specification (NEC) ----------------------------------------------------10
4.4.1 Panel Feature --------------------------------------------------------------------10
4.4.2 Display Characteristics ---------------------------------------------------------10
4.4.3 Optical Characteristics --------------------------------------------------------11
4.4.4 Parameter guide line for CCFL Inverter ------------------------------------11
5. Block Diagram -----------------------------------------------------------------------------12
5.1 Monitor Exploded View -------------------------------------------------------------12
5.2 Software Flow Chart ------------------------------------------------------------------13
5.3 Electrical Block Diagram -------------------------------------------------------------14
EN5200-ei
5.3.1 Scalar Board ----------------------------------------------------------------------14
5.3.2 Inverter/Power Board -----------------------------------------------------------15
6. Schematic -----------------------------------------------------------------------------------16
7. PCB Layout ---------------------------------------------------------------------------------21
7.1 Main Board -----------------------------------------------------------------------------21
7.2 Inverter/Power Board ----------------------------------------------------------------22
8. Maintainability ------------------------------------------------------------------------------23
8.1 Equipments and Tools Requirements --------------------------------------------23
8.2 Trouble Shooting ----------------------------------------------------------------------24
9. White-Balance, Luminance Adjustment ----------------------------------------------27
10. EDID Content ------------------------------------------------------------------------------28
11. BOM List -----------------------------------------------------------------------------2940
EN5200-ei
Revision List
Revision Date Change Description
EN5200-ei
1. MONITOR SPECIFICATIONS
ITEM SPECIFICATION
Display Area (mm) 301.1(H) x 228.1(V) (15.0-inch diagonal)
Number of Pixels 1024(H) x 768(V)
Pixel Pitch (mm) 0.297(H) x 0.297(V)
Color Pixel Arrangement RGB vertical stripe
Display Mode Normally white TN
Number of Colors 262144(6bit/color)
Brightness (cod / m²) 250cd/ m² (Typ.)
Viewing Angle -60-60(H), -55-45(V)( Typ)
Wide Viewing Angle Technology Optical Compensation Film
Surface Treatment Anti-glare
Electrical interface RSDS (1 pixel/clock)
Total Module Power (W) 10.5(Typ.)
Optimum Viewing Angle 6 O'clock
Module Size (mm) 326.0(w) x 251.0(H) x 12.0(D)
Module Weight (g) 1200
Backlight Unit CCFL, 2 tables, edge- light (top/bottom)
2. LCD MONITOR DESCRIPTION
The LCD MONITOR will contain a main board, an inverter/power board, 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.
Monitor Block Diagram
Flat Panel and
CCFL Drive.
CCFL backlight
Power board Main Board
RS232 Connector
(include: adapter, inverter)
For white balance
adjustment in factory
mode
Keyboard
AC-IN
HOST Computer Video signal, DDC
100V-240V
EN5200-ei
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
Hot keys Navigation Within OSD Without OSD
Select Function or select Activate OSD main menu
Menu MENU
Sub menu
Previous Item or Decrease Brightness Hot key
Left
value
Right Next Item or Increase value Contrast Hot key
Exit OSD or back to Auto configuration
Exit / Auto AUTO
previous menu
3.3 ADJUSTING THE PICTURE
EN5200-ei
OSD TABLE:
1. Contrast Adjust the picture contrast.
2. Brightness Adjust the picture brightness.
3. Focus Adjust picture Focus.
4. Clock Adjust picture Clock.
H-
5. Adjust the horizontal position of the picture.
Position
6. V.-Position Adjust the vertical position of the picture.
7 Language Multi-Language selection
8. Red Adjusts Red intensity.
9. Green Adjusts Green intensity.
10. Blue Adjusts Blue intensity.
11. C1 (Warm) Color Set the color temperature to warm white.
12. C2 (Cool) Color Set the color temperature to cool white.
Clear each old status of Auto-configuration and re-do
13. Reset
auto-configuration.
14. Exit Save user adjustment and OSD disappear.
EN5200-ei
4. INPUIT/OUTPUT SPECFICATION
4.1 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
1 5
6 10
11 15
4.2 FACTORY PRESET DISPLAY MODES
VESA MODES
Horizontal Vertical
Nominal Sync Nominal Sync Nominal
Mode Resolution Total Frequency Polarity Freq. Polarity Pixel
+/- 0.5kHz +/- 1 Hz Clock (MHz)
640x480@60Hz 800 x 525 31.469 N 59.940 N 25.175
VGA 640x480@72Hz 832 x 520 37.861 N 72.809 N 31.500
640x480@75Hz 840 x 500 37.500 N 75.00 N 31.500
800x600@60Hz 1056 x 628 37.879 P 60.317 P 40.000
SVGA 800x600@72Hz 1040 x 666 48.077 P 72.188 P 50.000
800x600@75Hz 1056x625 46.875 P 75.000 P 49.500
1024x768@60Hz 1344x806 48.363 N 60.004 N 65.000
1024x768@60Hz 1312x813 48.78 N 60.00 N 64.000
1024x768@70Hz 1328x806 56.476 N 70.069 N 75.000
XGA
1024x768@72Hz 1304x798 57.515 P 72.074 P 75.000
1024x768@75Hz 1328x804 60.200 N 74.90 N 80.000
1024x768@75Hz 1312x800 60.023 P 75.029 P 78.750
EN5200-ei
IBM MODES
Horizontal Vertical
Nominal Nominal Nominal
Total Sync Sync
Mode Resolution Frequency Freq. Pixel
Polarity Polarity
+/- .5kHz +/- 1 Hz Clock (MHz)
DOS 720x400@70Hz 900 x 449 31.469 N 70.087 P 28.322
DOS 640x350@70Hz 800 x 449 31.469 N 70.087 P 25.175
MAC MODES
VGA 640x480@67Hz 864x525 35.000 N 66.667 N 30.240
SVGA 832x624@75Hz 1152x667 49.725 N 74.551 N 57.2832
Note: All modes will automatically optimize the screen size with " AUTO-config " function, except 3
Dos- Modes: 720 x 400@70hz, 640x350@70hz, 640x400@70hz
4.3 POWER SUPPLY REQUIREMENT
4.3.1 INPUT REQUIREMENT
PARAMETER RANGE CONDITION
Input Voltage 100 to 240VAC RMS Universal input full range
60Hz @ 100VAC to 50Hz
Input Frequency @ 240VAC
Input voltage 100 VAC RMS; 60 Hertz.
Input Current Less than 2.0 Amps RMS Parameter must be reached within 3 seconds
of turn-on.
Input voltage 220 VAC RMS ; 50 Hertz.
Less than 1.0 Amps RMS Parameter must be reached within 3 seconds
of turn-on.
Input Power Less than 40 Watts
Power factor > 0.5 Input voltage 120 VAC RMS ; 60
Hertz
Input voltage 100 VAC RMS; 60 Hertz at all
Inrush Current Less than 30 A peak Phase (0, 90, 180, 270 degree)
Input voltage 240 VAC RMS; 50 Hertz at all
Less than 50 A peak Phase (0, 90, 180, 270 degree)
Fuse should be located internal to Fuse must be UL/CSA approved. Fuse value
Input Fusingthe adapter, easily accessible must no have to change for 115 VAC or 230
when the cover is removed 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
Hi-Pot 10mA)
3.0KVAC for 1 Minute (leakage current
10mA)
without Y-cap & Coupling cap.
EN5200-ei
Primary to Safety Ground 1.5KVAC for 1 Minute (leakage current
10mA)
1.8KVAC for 1 Minute (leakage current
10mA)
4.3.2 OUTPUT REQUIREMENT
PARAMETER RANGE CONDITION
DC Out 12VDC ± 5% Min 0A Max 3.75A
Load Regulation 12.0V ± 5% 11.4 to 12.6VDC
Dynamic Load Any frequency up to 250Hz(duty 5% for 10% to 100%, 100% to 10% load
Regulation 50%) change for +12Vdc
170mVpp at 12VDC Input voltage: 100VAC at 60Hz 240VAC at
Ripple & noise 50Hz
* Ripple and noise are measured.
Output current Less than 7.0A, more than 12.0A at Current exceeds maximum rating more
protection 12.0VDC 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
4.4 PANEL SPECIFICATION (NEC)
4.4.1 PANEL FEATURE
LVDS interface(8 bit)
Selectable LVDS input map
Wide color gamut
High contrast
Edge light type(Inverter less)
Replace lamp for backlight
4.4.2 DISPLAYS CHARACTERISTICS
Items Specification Unit
Display Area 304.1 (H) x 228.1(V) mm
Driver element a-Si TFT active matrix
Display color 6-bits driver with LVDS I/F
Number of pixels 1024 x 768 pixel
Pixel Arrangement RGB vertical stripe
Pixel pitch 0.297(H) x 0.297(V) mm
Display Mode Normally White TN
EN5200-ei
4.4.3 OPTICAL CHARACTERISTICS
The optical characteristics are measured under stable conditions at 25 (Room Temperature)
ITEM SYMBOL CONDITION MIN TYP MAX UNIT
Contrast Ratio CR = =0 300 400 - -
Normal LW = =0 200 250 - cd/m²
Luminance
Uniformity LW = =0 75 80 - %
Response Time Tr - 9 - ms
= =0
(Black/White) Tf - 16 - ms
Horizontal 50~50 60~60 -
CR 10
Viewing Vertical 45~35 55~45 -
Angle Horizontal 65~65 75~75 -
CR 5
Vertical 65~45 75~50 -
Image sticking tis 2hours - - 2 s
Cross talk CMR = =0 - - 1 %
Rx 0.613 0.643 0.673
Red
Ry 0.314 0.344 0.374
Gx 0.274 0.304 0.334
Green
Color Gy 0.536 0.566 0.596
= =0 -
Coordinates Bx 0.111 0.141 0.171
Blue
By 0.055 0.085 0.115
Wx 0.282 0.312 0.342
White
Wy 0.288 0.318 0.348
4.4.4 PARAMETER GUIDE LINE FOR CCFL INVERTER.
Back-Light Unit
The backlight system is an edge-lighting type with 2-CCFL (Cold Cathode Fluorescent Lamp).
The characteristics of four lamps are shown in the following tables.
Item Symbol Min. Typ. Max. Unit Remark
Lamp Voltage IL - 650 - V IL=7.0mA
Lamp Current VL 5.0 7.0 8.0 mA Note1
Lamp frequency FL 40 50 60 KHz Note2
Starting Lamp VS 1300 - - V Tb=0
Voltage 1100 - - V Ta=25
EN5200-ei
LT 35000 45000 - hr IL=7.0mA
Lamp life Time
Continuous
Operation
EN5200-ei
5. BLOCK DIAGRAM
5.1 MONITOR EXPLODED VIEW
SCREW
REAR COVER Q1A340-16-128X4
34A675
SHIELD
85A548
MAIN BOARD
MAIN FRAME
15A5683(HANNSTAR)
SCREW
INVERTER SHIELD Q1A1030-12-128X4
LCD PANEL 85A577
750ALCDX41-1
INVERTER BOARD
79AL15-6-S
SUPPORT(BACK)
34A677
ADAPTER BOARD
80AL15-2-L1
HINGE
SUPPORT(FRONT)
37A442
34E676
KEPC
KEPC560EKMN SHIELD
KEY PAD 85A580
33A4095
POWER LENS
EARTH CLIP
33A3782
BASE 85A562
FRONT BEZEL 34A787
34A785
TURN BASE
34A786
BASE HOLDER
15A5688 X 4
BASE SHIELD
15A5687 SCREW
Q1A1030-10-128 X 4
SCREW
Q1A1030-10-128 X 4
PLASTIC GEAR
11A144-1
RUBBER FOOT SCREW
12A385-1 X 4 Q1A1020-6-120
EN5200-ei
5.2 Software Flaw Chart
(1)
(2)
(3)
(4)
(5)
Y
N
(6 (7)
(8)
Y
N
(9 (10)
(11)
(12)
EN5200-ei
1. Initialize MCU settings, including I/O, Timer, ISR and Serial Port settings.
2. Read EEPROM content to recover monitor settings, including brightness, contrast, color temperature
and OSD position etc.
3. Initialize system variable, including system flag, OSD timeout counter, burin mode status... etc.
4. Initialize OSD menu variable for user operation
5. Initialize device on the board, now only MST scaler chip will be initialized
6. Check if system is in power off status from first AC power up. If yes, then go to 7, else go to 8.
7. If yes, system will be forced to enter power off status
8. Mode detection
9. Check if input timing has been changed, if yes then go to 10, else go to 11
10. Setup MST scaler for display according input timing
11. OSD handler for OSD operation.
12. Debug handler, only debug only
5.3 ELECTRICAL BLOCK DIAGRAM
5.3.1 SCALAR BOARD BLOCK DIAGRAM
EN5200-ei
5.3.2 INVERTER/POWER BOARD BLOCK DIAGRAM
Inverter Block Diagram
EN5200-ei
Power Block Diagram
EN5200-ei
6.SCHEMATIC
6.1 MAIN BOARD
Analog input
VCC5V+
VCC5V
D2 SOT-223
VCC12V DIODE U201
R202 VCC2.5
VCC12V 6
RT9164-25CG
CON402(PITCH 2.54) 10K 1/16W 3 2
VI VO VCC2.5 4
CN201
GND ON_OFF R201 4.7K 1/16W
1 2 DIM
GND
GND C210 C211 + C212
VCC12V 3 4 VCC12V VCC5V
5 6 GND
3
GND D1 SCHOTTEYDIODE C201 R212 4.7K 1/16W 0.1uF 47uF/16V 0.1uF
VCC5V 7 8 VCC5V 1
1
GND 9 10 GND VCC5V+ onBACKLITE 6
0.1uF Q201
11 12 PMBS3904
2
VCPU
FB201 C
600 OHM
VCPU 6
B E
VCC5V 3,6
VCC5V
C202 C204
+ C203 + C205
R203 0.1uF 220uF/25V 0.1uF
1K 1/16W 220uF/25V
Brightness VCC3.3
R204
10K 1/16W VCC3.3 4
3
R205 4.7K 1/16W VCC5V+
1 Q202
4 AdjBACKLITE
PMBS3904
+ C206
10uF/16V
TO-263
U202 VAA1
2
C AIC1084-33M
3 2
VIN VOUT VAA1 4
B E
1
C214 ADJ C215 + C216 VAA2
VCC5V VLCD 0.1uF 47uF/16V 0.1uF
VAA2 4
VLCD 5
VAA3
VCC5V VCC3.3
R206 R208
VAA3 4
10K 1/16W 10K 1/16W VAA4
R209 R210
Q203
VAA4 4
AO3401 0 1/16W NC
3
R207 4.7K 1/16W
1 Q204
6 onPanel_5V/3.3V
PMBS3904
C207 + C208 R211
2
10uF/16V
0.1uF 10K 1/16W
Title
MST8011A/ MST8111Afor AOC
Size Document Number Rev
B POWER A
Date: Wednesday, June 11, 2003 Sheet 2 of 6
EN5200-ei
INPUT
CN301
RXD 6
DB15
TXD 6
11 1 FB301 0 1/16W R301 100 1/16W C304 0.047uF
RIN 4
6
12 2 FB302 0 1/16W R302 100 1/16W C305 0.047uF
GIN 4
7
13 3 FB303 0 1/16W R303 100 1/16W C306 0.047uF
BIN 4
8
14 4 R304 470 1/16W C307 0.001uF
SOG 4
75 1/16W
75 1/16W
9 PC5V R325 C301 C302 C303
R326
R327
15 5
10 VGA_CON 75 1/16W NC NC NC
R305 100 1/16W C308 0.047uF
GNDR 4
R306 100 1/16W C309 0.047uF
GNDG 4
R307 100 1/16W C310 0.047uF
GNDB 4
3
3
3
D301 D302 D303
BAV99 BAV99 BAV99 VCC5V
VCC5V
R308
10K 1/16W
2
1
2
1
2
1
R309 100 1/16W VCC5V PC5V
ST_DET1 6
2
1
HSI FB304 150 OHM R310 150 1/16W
HSYNC 4
VSI R312 100 1/16W R311 1K 1/16W D304
VSYNC 4
BAT54C-GS08
D319 D320 R313 C311 R314 C312 D317
3
MLL5232B 5.6V MLL5232B 5.6V MLL5232B 5.6V
2.2K 1/16W 33pF 10K 1/16W 220pF R317 R318 C313
10K 1/16W U301
10K 1/16W 8 1 0.1uF
7 VCC A0 2
CLK_DDC R315 100 1/16W 6 WP A1 3
DAT_DDC R316 100 1/16W 5 SCL A2 4
SDA GND
CN302 AT24C02N-10SC
D321 D318
4,6 DDC_DAT
25 MLL5232B 5.6V MLL5232B 5.6V
R 4,6 DDC_CLK
26
G 27 VCC5V DVI5V
B 29
RGB GND
2
1
28
HSYNC 8
VSYNC 15
SYNC GND 6 CLK_DDC2 R319 100 1/16W NC DVI5V D305
DDC SCL 7 DAT_DDC2 R320 100 1/16W NC R321 BAT54C-GS08 NC
DDC SDA 14 10K 1/16W NC
+5V 16 R322 100 1/16W NC
HPD ST_DET2 6
3
11
1/3shield 3 D314 D315 D316 C314 R323 R324 C315
2/4shield 19 LL5232B 5.6V 5% NC LL5232B 5.6V 5% NC LL5232B 5.6V 5% NC 10K 1/16W NC U302
0/5shield 22 0.1uF NC 10K 1/16W NC 8 1 0.1uF NC
clk shield 7 VCC A0 2
18 6 WP A1 3
DAT0+ B+ 4 SCL A2
17 5 4
DAT0- B- 4 SDA GND
10
DAT1+ G+ 4
9
DAT1- G- 4
2 AT24C02N-10SC NC
DAT2+ R+ 4
1
DAT2- R- 4
13
DAT3+ 12
DAT3- 5
DAT4+ 4
DAT4- 21
DAT5+ 20
DAT5- 23
clk+ CLK+ 4
24
clk- CLK- 4
JACK NC
D306 D307 D308 D309 D310 D311 D312 D313
NC NC NC NC NC NC NC NC
Title
MST8011A/ MST8111Aor AOC
Size Document Number Rev
B INPUT A
Date: Wednesday, June 25, 2003 Sheet 3 of 6
EN5200-ei
Scalar MST8011A / MST8111A
VCC3.3 FB401 VPO VCC2.5 FB402 VDD
2 VCC3.3 2 VCC2.5
600 OHM 600 OHM
C405 + C414 +
10uF/16V 10uF/16V
VAD VPLLVDVI VDPLL VPO VDD
C406C407C408C409C410C411C412C413 C415C416C417C418
0.1uF
0.1uF 0.1uF
0.1uF
0.1uF 0.1uF
0.1uF 0.1uF 0.1uF
0.1uF
0.1uF