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19" LCD Color Monitor 190V7
Service
Service
Service
Horizontal Frequency
30- 83KHz
TABLE OF CONTENTS
Description Page Description Page
Table Of Contents............................................................1
Revision List....................................................................2 6. Schematic Diagram......................................................22
Important Safety Notice......................................................3 6.1 Main Board...........................................................22
1. Monitor Specifications.....................................................4 6.2 Power Board..........................................................27
2. LCD Monitor Description................................................5 7. PCB Layout..................................................................29
3. Operation instructions....................................................6 7.1 Main Board..............................................................29
3.1 General Instructions.................................................6 7.2 Power Board.............................................................32
3.2 Control buttons.....................................................6 7.3 Key Board.........................................................34
3.3 Adjusting the Picture..................................................8 8. Wiring Diagram....................................................35
3.4 Connecting to your PC ............................................11 9. Mechanical Instructions................................................36
4. Input/Output Specification........................................12 10. Trouble shooting.................................................41
4.1 Input Signal Connector...........................................12 11. Repair Flow Chart...............................................43
4.2 Factory Preset Display Mode.....................................13 12. ISP Instructions.........................................................48
4.3 Pixel Defect Policy................................................14 13. DDC Instructions....................................................54
5. Block Diagram.......................................................17 14. White Balance, Luminance Adjustment.........................63
5.1 Monitor Exploded View............................................17 15. Spare Parts List.........................................................64
5.2 Software Flow Chart....................................................18 16. Different Parts List.............................................75
5.3 Electrical Block Diagram.............................................20 17. General Product Specification..................................76
SAFETY NOTICE
ANY PERSON ATTEMPTING TO SERVICE THIS CHASSIS MUST FAMILIARIZE HIMSELF WITH THE CHASSIS
AND BE AWARE OF THE NECESSARY SAFETY PRECAUTIONS TO BE USED WHEN SERVICING
ELECTRONIC EQUIPMENT CONTAINING HIGH VOLTAGES.
CAUTION: USE A SEPARATE ISOLATION TRANSFOMER FOR THIS UNIT WHEN SERVICING
GB 3138 106 10522
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19" LCD Color Monitor 190V7
Revision List
Version Release Date Revision History
A00 May.17, 2006 Initial release
Add CTV Model 190V7FB/00,
A01 Jun.15, 2006
190V7FB/69, 190V7FB/93 in Item 16
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19" LCD Color Monitor 190V7
Important Safety Notice
Proper service and repair is important to the safe, reliable operation of all Philips Company** Equipment. The
service procedures recommended by Philips and described in this service manual are effective methods of
performing service operations. Some of these service operations require the use of tools specially designed for the
purpose. The special tools should be used when and as recommended.
It is important to note that this manual contains various CAUTIONS and NOTICES which should be carefully read
in order to minimize the risk of personal injury to service personnel. The possibility exists that improper service
methods may damage the equipment. It is also important to understand that these CAUTIONS and NOTICES ARE
NOT EXHAUSTIVE. Philips could not possibly know, evaluate and advise the service trade of all conceivable ways
in which service might be done or of the possible hazardous consequences of each way. Consequently, Philips has
not undertaken any such broad evaluation. Accordingly, a servicer who uses a service procedure or tool which is
not recommended by Philips must first satisfy himself thoroughly that neither his safety nor the safe operation of
the equipment will be jeopardized by the service method selected.
* * Hereafter throughout this manual, Philips Company will be referred to as Philips.
WARNING
Use of substitute replacement parts, which do not have the same, specified safety characteristics may create
shock, fire,
or other hazards.
Under no circumstances should the original design be modified or altered without written permission from Philips.
Philips
assumes no liability, express or implied, arising out of any unauthorized modification of design.
Servicer assumes all liability.
FOR PRODUCTS CONTAINING LASER:
DANGER-Invisible laser radiation when open. AVOID DIRECT EXPOSURE TO BEAM.
CAUTION-Use of controls or adjustments or performance of procedures other than those specified herein may
result in hazardous radiation exposure.
CAUTION -The use of optical instruments with this product will increase eye hazard.
TO ENSURE THE CONTINUED RELIABILITY OF THIS PRODUCT, USE ONLY ORIGINAL MANUFACTURER'S
REPLACEMENT PARTS, WHICH ARE LISTED WITH THEIR PART NUMBERS IN THE PARTS LIST SECTION
OF THIS SERVICE MANUAL.
Take care during handling the LCD module with backlight unit
-Must mount the module using mounting holes arranged in four corners.
-Do not press on the panel, edge of the frame strongly or electric shock as this will result in damage to the screen.
-Do not scratch or press on the panel with any sharp objects, such as pencil or pen as this may result in damage to
the
panel.
-Protect the module from the ESD as it may damage the electronic circuit (C-MOS).
-Make certain that treatment person's body is grounded through wristband.
-Do not leave the module in high temperature and in areas of high humidity for a long time.
-Avoid contact with water as it may a short circuit within the module.
-If the surface of panel becomes dirty, please wipe it off with a soft material. (Cleaning with a dirty or rough cloth
may damage the panel.)
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19" LCD Color Monitor 190V7
1. Monitor Specifications
Screen type Active matrix - TFT LCD
Panel Type LM190E03 (LPL)
Size 481.9 mm (19.0")
LCD Panel
Pixel pitch 0.294mm(H) x 0.294mm(V)
Viewable angle (CR>10) Horizontal 160º, Vertical 160º (type)
Response time 8ms (type)
Video 0.7 Vp-p, input impedance, 75 ohm @DC
Separate Sync TTL level, input impedance 2.2k ohm terminate
Input
Horizontal Frequency 30kHz 83kHz
Vertical refresh rate 56 - 76Hz
Display Colors 16.2 M
Contrast Ratio 700:1
White Luminance 300cd/m2
Video dot rate 140 MHz
1280 x 1024 at 75Hz (analog input)
Maximum Resolution
1280 x 1024 at 75Hz (digital input)
Recommended Resolution 1280 x 1024 at 60Hz (digital input)
Plug & Play VESA DDC2B
Power on: < 34 W
Power Consumption
Power off: < 1 W
D-Sub 15pin
Input Connector
D-DVI 24 pin
Input Video Signal 0.7 Vp-p, input impedance, 75 ohm @DC
Tilt -5° 25°
Maximum Screen Size Horizontal: 376.32mm;Vertical: 301.056 mm
Power Source 100-240 VAC, 50/60 Hz
Operating Temp: 5°C to 40°C
Environmental
Operating Humidity: 20% to 80%
Considerations
Storage Temp.: -20°C to 60°C
Weight (Net) 5.5kg
Cabinet color 190V7FB: Black
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19" LCD Color Monitor 190V7
2. LCD Monitor Description
The LCD monitor will contain a main board, PWPC 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
CCFL Drive. Flat Panel and
CCFL backlight
RS232 Connector
PWPC board
(Included: adapter and Main Board For white balance
inverter)
adjustment in factory
mode
Keyboard
Video signal, DDC
AC-IN
Host Computer
100-240V
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19" LCD Color Monitor 190V7
3. Operation 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
Front View
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19" LCD Color Monitor 190V7
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19" LCD Color Monitor 190V7
3.3 Adjusting the Picture
This is a feather in all Philips LCD monitors. It allows an end user to adjust screen performance of the monitors
directly through an on-screen instruction window. The user interface provides user-friendliness and ease-of-use
when operating the monitor.
When you press the button on the front control of your monitor, the On-Screen Display (OSD) main controls
window will pop up and you can then start making adjustments to your monitor's various features. Use the or
the keys to make your adjustments.
The OSD tree
Below is an overall view of the structure of the On-Screen Display. You can use this as a reference when you want to
work your way around the different adjustments later on.
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19" LCD Color Monitor 190V7
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19" LCD Color Monitor 190V7
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19" LCD Color Monitor 190V7
3.4 Connecting to the PC
1) Connect the power cord to the back of the monitor firmly. (Philips has pre-connected) VGA cable for the first
installation.)
2) Connect to PC
(a) Turn off your computer and unplug its power cable.
(b) Connect the monitor signal cable to the video connector on the back of your computer.
(c) Plug the power cord of your computer and your monitor into a nearby outlet.
(d) Turn on your computer and monitor. If the monitor displays an image, installation is complete.
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19" LCD Color Monitor 190V7
4. Input/Output Specification
4.1 Input Signal Connector
4.1.1 VGA Connector
Pin NO. Description Pin NO. Description
1. Red Video input 9. DDC +5V
2. Green Video input (SOG) 10. Logic GND
3. Blue Video input 11. Ground
4. Sense (GND) 12. Serial data line (SDA)
5. Cable Detect 13. H.sync /H + V.sync
6. Red Video Ground 14. V.Sync
7. Green Video Ground 15. Data Clock Line (SCL)
8. Blue Video Ground
VGA Connector layout
4.1.2 DVI Connector
Pin NO. Description Pin NO. Description
1. T.M.D.S.Data2- 13. No connect
2. T.M.D.S.Data2+ 14. + 5V Power
3. T.M.D.S.Data2/4 Shield 15. Ground (for +5V)
4. No connect 16. Hot Plug Detect
5. No connect 17. T.M.D.S.Data0-
6. DDC Clock 18. T.M.D.S.Data0+
7. DDC Data 19. T.M.D.S.Data0/5 Shield
8. No connect 20. No connect
9. T.M.D.S.Data1- 21. No connect
10. T.M.D.S.Data1+ 22. T.M.D.S. Clock Shield
11. T.M.D.S.Data1/3 Shield 23. T.M.D.S. Clock +
12. No connect 24. T.M.D.S. Clock -
DVI Connector layout
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19" LCD Color Monitor 190V7
4.2 Factory Preset Display Modes
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19" LCD Color Monitor 190V7
4.3 Pixel Defect Policy
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19" LCD Color Monitor 190V7
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19" LCD Color Monitor 190V7
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19" LCD Color Monitor 190V7
5. Block Diagram
5.1 Monitor Exploded View
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19" LCD Color Monitor 190V7
5.2 Software Flow Chart
1
Y
2 3
N
4
N
5
Y
6
N
7 8
Y
9
N
10 11
Y
N N
12 13
Y Y
N
14 15 16
Y
17
N
18 19
Y
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19" LCD Color Monitor 190V7
1) MCU Initializes.
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. Scalar
initializes.
10) In standby mode?
11) Update the lifetime of back light.
12) Check the analog port, are there any signals coming?
13) Does the scalar send out an 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 after the message
disappears.
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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19" LCD Color Monitor 190V7
5.3 Electrical Block Diagram
5.3.1 Main Board
Panel Interface
(CN406)
Keypad Interface
(CN403)
NT68623MEFG-64
SDA (Include MCU, ADC, OSD)
EEPROM
SCL
AT24C16AN-10SU-2.7 (U401)
(U403)
RXD
TXD RGB H-SYNC DVI Video
V-SYNC Signal
Crystal 12MHz D-Sub Connector DVI Connector
(X401) (CN405) (CN202)
DB15_SCL DVI_SCL
DB15_SDA DVI_SDA
EEPROM M24C02 EEPROM M24C02
(U405) (U404)
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19" LCD Color Monitor 190V7
5.3.2 Inverter/Power Board
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19" LCD Color Monitor 190V7
6. Schematic Diagram
6.1 Main Board
715G1767-1
+5V
R496
1K 1/16W
VGA-5V C409
0.1uF/16V
R416 ZD412
1
2
CN405 0 1/16W UDZS5.6B
DB15 GND_A
16
R441 R426
220 1/16W 10 1K 1/16W
VGA-SCL 15 5 D406 GND_A
VGA-SCL VGA-DET
9 BAV99
VS 14 4 FB401
3
8 0 1/16W
ZD407 HS 13 3 B1 ZD405 B1
BI1
UDZS5.6B 7 UDZS5.6B ZD414
12 2 G1 UDZS5.6B
6 R455 CH201209T-300 C451
11 1 R1 75 1/16W NC
GND_A GND_A
BI1-
DB15 GND_A
17
FB402
R440 GND_A 0 1/16W
220 1/16W
VGA-SDA M_TXD
GND_A
VGA-SDA
M_RXD
C410
0.1uF/16V
ZD404
UDZS5.6B ZD406 ZD403
1
2
UDZS5.6B UDZS5.6B
C433 C434 GND_A
NC NC
GND_A FB403
D405 0 1/16W
G1 BAV99
GI1
3
GND_A GND_A
R454 CH201209T-300 C452
75 1/16W NC
GI1-
FB406
GND_A 0 1/16W
D416 R406
BAV70 100 1/16W C411
VGA-5V VS 0.1uF/16V
VSIN
4.7K 1/16W
R478
1
2
ZD401 R435 C402
+5V UDZS5.6B 2.2K 1/16W 0.001uF GND_A
C446
GND_A 0.1uF/16V FB404
D404 0 1/16W
R479 R476 GND_A GND_A GND_A R1 BAV99
RI1
U405 4.7K 1/16W R405
3
24C02 10K 1/16W 100 1/16W
HS R456 CH201209T-300 C453
1 8 HSIN 75 1/16W NC
2 A0 VCC 7
A1 WP VGA-SCL 24C02_WP RI1-
3 6 ZD402 R436 C430
4 A2 SCLK 5 VGA-SDA UDZS5.6B 2.2K 1/16W 22pF FB405
GND SDA GND_A 0 1/16W
GND_A GND_A GND_A GND_A
Title
715G1767-1
Size Document Number Rev
A4 0.1
ADC Input
Date: Friday, January 06, 2006 Sheet 1 of 5
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19" LCD Color Monitor 190V7
MCU-VDD
VSO T0M
T0P
HSO T1M
T1P
Q402
T2M
R418 10K 1/16W LEDG SCL
T2P
TCLK1M
LED-Green R437 220 1/16W PMBS3906
Q404 SDA
TCLK1P
R419 10K 1/16W LEDA
RSTn T3M
T3P
LED-Orange R438 220 1/16W PMBS3906
IRQn T4M
T4P
T5M
RX2+ CVDD1V8 T5P
RX2+ RX2- DVDD T6M
RX2- RX1+ T6P
RX1+ RX1- TCLK2M
RX1- RX0+ TCLK2P
RX0+ RX0- T7M
RX0- RXC+ T7P
FB704 RXC+ RXC-
ADC_VAA RXC-
102
101
100
99
98
97
96
95
94
93
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