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
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19" LCD Color Monitor HP VS19E
Revision List
Version Date Revision History TPV Model Name
A00 Jun.-30-06 Initial release T980KMDDKHHPAP
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19" LCD Color Monitor HP VS19E
1. Monitor Specification
Items Description
Driving system TFT Color LCD
Panel M190E5-L0A
Display area 376.32(H) x301.056 (V) (19.0")
Pixel pitch 0.294mm(H) x 0.294mm(V)
LCD Panel
Viewable angle 150˚ (H) 130˚ (V)
Response time (typ.) 8ms
Brightness 300cd/m²
Contrast 700:1
Video Analog
Input
Display Colors Over 16 million Colors
Dot Clock 140MHz
Max. Resolution 1280 x 1024
Plug & Play VESA DDC2BTM
Power Consumption
Power Source 90~265VAC,47~63Hz
Environmental
Considerations
Sync. Type H/V TTL
H-Frequency 30kHz – 83kHz
V-Frequency 50-76Hz
ON Mode
Sleep Mode
OFF Mode
Operating Temp: 5°C to 35°C
Storage Temp.: -20°C to 60°C
Operating Humidity : 20% to 80%
37W
≤
2W
≤
1W
≤
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19" LCD Color Monitor HP VS19E
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2.LCD Monitor Description
The LCD Monitor will contain main board, power board, key board and an audio board which house the flat panel
control logic, brightness control logic and DDC.
The power board will provide AC to DC Inverter volt age to drive the backlight of panel and the main board chips each
voltage.
Power Board
Include adapter and inverter)
AC-IN
110V-240V
Monitor Block Diagram
CCFT Drive.
Main Board
Audio board
Keyboard
Flat Panel and
CCFL backlight
RS232 Connector
For white balance
adjustment in
factory mode
Video signal, DDC
HOST Computer
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 of the panel. By
changing these settings, the picture can be adjusted to your personal performance.
The power cord should be connected and insert to adaptor.
-
Connect the video cable from the monitor to the computer VGA card.
-
- Press the power button to turn on the monitor, the power indicator will light up to Green.
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:
When the OSD show on screen, Left/Right Button are used to control the monitor functions. Press to switch
functions or adjust settings. And if the OSD off, Left buttons 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.
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19" LCD Color Monitor HP VS19E
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19" LCD Color Monitor HP VS19E
3.3 Adjust the Picture
NO. Control Icons NO. Control Icons
1 Brightness
2 Contrast
3 Auto Adjustment
4 Image Control
5 Color
6 Custom Color
7 Language
8 Management
9 OSD Control
10 Information
11 Factory Reset
12 Default Video Input
13 Horizontal Position
14 Vertical Position
15 Clock
16 Clock Phase
17 Power Saver
18 Mode Display
19 Power-On Status Display
20 Sleep Timer
21 Basic Menu
22 Advanced Menu
23 Power On Recall
24 Horizontal OSD Position
25 Vertical OSD Position
26 OSD Timeout
27 OSD Transparency
28 Volume
29 Exit
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19" LCD Color Monitor HP VS19E
4. Input/Output Specification
4.1 Input Signal Connector
Pin Mnemonic Signal Pin
1 RV
2 GV Green Video 10 SG Sync Ground
3 BV Blue Video 11 NC None
4 NC None 12 SDA DDC Data
5 GND Ground (DDC Return) 13 HS Horizontal Sync
6 RG Red GND 14 VS Vertical Sync
7 GG Green GND 15 SCL DDC Clock
8 BG Blue GND
Red Video 9 +3.3/+5 V +5 V (from PC)
VGA connector layout
PIN 1
PIN 11
Mnemonic Signal
PIN 5
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19" LCD Color Monitor HP VS19E
4.2 Factory Preset Display Modes
Preset
Pixel
Format
1 640 x 480 31.469 - 59.940 - 25.175 VGA
2 640 x 480 37.861 - 72.809 - 31.500 VESA
3 640 x 480 37.500 - 75.000 - 31.500 VESA
4 720 x 400 31.469 - 70.087 + 28.322 VGA
5 800 x 600 37.879 + 60.317 + 40.000 VESA
6 800 x 600 48.077 + 72.188 + 50.000 VESA
7 800 x 600 46.875 + 75.000 + 49.500 VESA
8 832 x 624 49.726 ± 74.551 ± 57.284 MAC
9 1024 x 768 48.363 - 60.004 - 65.000 VESA
10 1024 x 768 56.476 - 70.069 - 75.000 VESA
11 1024 x 768 60.023 + 75.029 + 78.750 VESA
12 1152 x 870 68.68 - 75.06 - 100.000 Mac
13 1152 x 900 71.71 - 76.05 - 105.561 Sun
14 1280 x 1024 63.98 + 60.02 + 108.000 VESA
Horz Freq
(KHz)
Horz
Polarity
Vert Freq
(Hz)
Vert
Polarity
Pixel Clk
Source
(MHz)
15 1280 x 1024 79.97 + 75.02 + 135.000 VESA
4.3 Power Supply Requirements
Parameter Range
AC Input Voltage 90 to 265V
AC Input Frequency 47 to 63 Hz
Inrush Current 50A MAX AT 220VAC and 30A AT 120VAC
Leakage Current 5 mA MAX at 120VAC
Power Consumption
≤37W
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19" LCD Color Monitor HP VS19E
5. Panel Specification
5.1 General Feature
Mechanical Information
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19" LCD Color Monitor HP VS19E
5.2 Optical Characteristics
Test Conditions
Optical Specification
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19" LCD Color Monitor HP VS19E
6. Block Diagram
6.1 Monitor Exploded View
.
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19" LCD Color Monitor HP VS19E
6.2 Software Flow Chart
1
Y
2
N
3
4
5
N
Y
6
N
7
8
Y
9
10
N
11
12
Y
13
N
N
Y
14
15
Y
N
16
Y
17
18
N
19
Y
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19" LCD Color Monitor HP VS19E
REMARK:
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.
Scalar initialize.
10) In standby mode?
11) Update the lifetime of back light.
12) Check the analog port, are they’re 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
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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19" LCD Color Monitor HP VS19E
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)
6.3 Electrical Block Diagram
6.3.1 Scalar Board
EEPROM
AT24C16AN
(U304)
Scalar IC GM2621-LF-BC (Include ADC, OSD, MCU)
Key Board
Control
(CN602)
LCD Interface
CN501
(U301)
Crystal
14.31818MHz
(X301)
H sync
V sync
RGB
D-Sub
Connector
(CN202)
DDC_CLK,
DDC_DAT
EEPROM
M24C02
(U304)
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19" LCD Color Monitor HP VS19E
6.3.2 Inverter / Power Board
Lamp
EMI filter
Feedback
Circuit
Start Circuit
R912/R916/R918
PWM
Control IC
LC
resonance
Bridge
Rectifier
and Filter
Full bridge
switch circuit
Diode
Transformer
OZ1060
PWM IC
Rectifier&filter
Over
Voltage
Protect
Start
circuit
CON102
5V
12V
ON/OFF
DIM
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19" LCD Color Monitor HP VS19E
7. Schematic
7.1 Main Board
VGA_5V
VCC5V
1
2
D210
BAV70
3
R236
R226
C214
GND
DDC_SDA_VGA(3)
(3)
DDC_SCL_VGA
1
2
3
4
3
UDZS5.6B
2
0.1uF/16V
GND
U202
VCCA0
A1A2WP
SCL
GND
SDA
M24C02WMN6
DDC_SDA_A
DDC_SCL_A
ZD207
GND
4.7K 1/16W
81
7
6
5
UDZS5.6B
4.7K 1/16W
ZD208
UDZS5.6B
ZD210
R227
4.7K 1/16W
DDC_SDA_A
R242
100 1/16W
DDC_SCL_A
100 1/16W
R243
R228100 1/16W
HS_in
VS_IN
R232 100 1/16W
ZD211
UDZS5.6B
3D
11
12
13
14
15
R240
2.2K 1/16W
VCC5V
1
G
Q201
RK7002
S
CN202
1716
DB15
1
6
2
7
3
8
4
9
5
10
Pins 6/7/8 are R/G/B
return lines resp.
R241
2.2K 1/16W
2
Dsub_EDID_WP (3)
VGA_5V
Rin
Gin
Bin
GND
R238220 1/16W
R239220 1/16W
Change ZD201,ZD211 from MLZ5.6 to
UDZS5.6
C221
VCC5V
0.1uF/16V
1
2
GND
3
ZD209
UDZS5.6B
GND
(8 mil)
R221
10K 1/16W
D211
BAV99
C218
NC
GNDA
R2372.2K 1/16W
GND
+3.3PV_VDD
C217
NC
C220
0.1uF/16V
1
GND
3
VCC5V
2
D212
BAV99
CABLE_DET
GND
VCC5V
C219
0.1uF/16V
1
3
R233
75 1/16W
(3)
VS(3)
HS(3)
2
D213
BAV99
FB201
0 OHM
FB202
0 OHM
FB203
0 OHM
R235
GNDA
R234
75 1/16W
75 1/16W
Add D211,D212,D213,C219
R22075 1/16W
R222100 1/16W
R22375 1/16W
R224100 1/16W
R22975 1/16W
R230100 1/16W
75-ohm terminating resistor
very close to the VGA
conn.
Check if the sync signal from
computer is output and video cable
is connected normally
Replace X301
OK
NG
Input the sync signal of computer, or
change the cable
Replace U301
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19" LCD Color Monitor HP VS19E
Panel Power Circuit
Check Correspondent
component.
Measure Q204 base is
high level?
NG
OK
Check Q204 and Q203 are broken
or CN503 solder?
NG
OK
Replace PANEL
X301 oscillate waveforms are
normal
NG
OK
Replace U301
NG
Replace U303
Replace X301
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9.2.2 Power Board
1. No Power
No power
Check AC line volt 110V or 220V
OK
NG
Check AC line
Check the voltage of C904(+)
OK
Check start voltage for the pin3 of IC901
NG
Check F901, bridge rectified circuit
OK
NG
Check R912, R916, R918, IC901
Check the auxiliary voltage is between 10V-17V
OK
NG
Check IC901,T901,ZD901 OVP circuit
Check D903, D907, FB Circuit
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2. W/LED No Backlight
Check L1912 =12V
OK
NG
Check adapter
Check ON/OFF signal
OK
NG
Check Interface board
Check IC801 PIN5=5V+0.25V
OK
Check IC801 PIN3=5V
NG
Check Q806,Q807, Q812, R840,ZD803 circuit
OK
NG
Check Q806, Q807,Q812,R840,ZD803 circuit
Check IC801 PIN 18 triangular wave is
normal
OK
NG
Check R817,R919,C812,C848,IC801
Check IC701 PIN11,12,19,20
OK
NG
Check R817,R819,C812,C848,IC801
End no output debug
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3. Protected 2
4. Protected 2
Striking function debug
OK
Connector CTIMER to GND and turn on power supply
OVP normally
NG
Check OVP circuit
End Striking function debug
FB and protection loop debug
Connector CSST and REF and turn on power supply
Check IC frequency is normal
OK
Check FB circuit
End FB and protection loop debug
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9.2.3 Key Board
OSD is unstable or not working
Is Keypad board connecting normally?
NG
Connect Keypad Board
OK
Is Button Switch normally?
NG
Replace Button Switch
OK
Is Keypad board normally?
NG
Replace Keypad Board
OK
Check main board
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10. White- Balance, Luminance Adjustment
Approximately 30 minutes should be allowed for warm up before proceeding
White-Balance adjustment.
1. How to do the Chroma-7120 MEM .Channel setting
A. Reference to chroma 7120 user guide
B. Use “ SC” key and “ NEXT” key to modify xyY value and use “ID” key to modify the
TEXT description Following is the procedure to do white-balance adjust
2. Setting the color temp. You want
A. 9300 color:
9300 color temp. parameter is x = 283 ±20, y = 297 ±20, Y > 180 cd/m
B. sRGB color:
sRGB color temp. parameter is x = 313±20, y = 329 ±20, Y>200 cd/m
C. 6500K color:
2 ,
2
)
Don’t adjustment,Custom requires.
3. Into factory mode of HP VS19E
A. Turn on power, press the down (-) button, pull out the power cord, and then plug the power cord. Then the
factory OSD will be at the left top of the panel.
4. Bias adjustment:
Set the Contrast
Adjust the Brightness
to 80
to 90.
5. Gain adjustment :
Move cursor to “-F-” and press MENU key
A. Adjus 9300k color-temperature
1. Switch the Chroma-7120 to 9300k channel.
2. The chroma 7120 will show x = 283±20, y = 297 ±20, Y>180 cd/m
3. Switch the chroma-720 to RGB MODE (with press “MODE” button to change )
4. Adjust the RED of color 9300K on factory window until chroma 7120 indicator reached
2
the value R=100
5. Adjust the GREEN of color 9300K on factory window until chroma 7120 indicator reached
the value G=100
6. Adjust the BLUE of color 9300K on factory window until chroma 7120 indicator reached
the value B=100
7. Repeat above procedure ( item 4,5,6) until chroma 7120 RGB value meet the
tolerance =100±2
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B. Adjust sRGB color-temperature
1. Switch the chroma-7120 to sRGB channel.
2. The chroma 7120 will show x = 313 ±20, y = 329 ±20, Y >200 cd/m
3. Switch the chroma 7120 l to RGB MODE ( with press “MODE” button to change )
4. Adjust the RED of color sRGB on factory window until chroma 7120 indicator reached
the value R=100
5. Adjust the GREEN of color sRGB on factory window until chroma 7120 indicator reached
the value G=100
6. Adjust the BLUE of color sRGB on factory window until chroma 7120 indicator reached
the value B=100
7. Repeat above procedure ( item 4,5,6) until chroma 7120 RGB value meet the
tolerance =100±2
C. Press reset key and Turn the Power-button “off to on” to quit from factory mode.
2
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11. Check List After Replacing LCD Main Board
Check if white-balance is within the specs after replacing Main board and panel,then re-writing DDC is
necessary.
Ⅰ. Check white -balance
The white-balance value for each common color temperature:
9300K: x=283± 20 ; y = 297± 20;
sRGB: x = 313± 20 ; y = 329 ± 20;
The color temperature value above must be up to the situation of x<y. The value of Y should be confirmed
according to different customers. 15 ”LCD is commonly 180±20cd/cm
larger than 200cd/cm
different customers and different models.
2
(Center). The exact brightness values are confirmed by the checking-regulations of
2
(Center)and 17” LCD is required to be
Ⅱ. Steps of white-balance adjustment for LCD:(Take 19” HP LCD for example)
2. First connect the instruments together and turn on the LCD power, then warm up for 30 minutes under full
white screen mode. First press the “Reset” key in the menu to recover factory set as following.
a) Set Chroma2325 at round-windows mode and make the detecting-head of Chroma7120 aim at the cross in the
middle, the distance between the detecting-head and the cross is 20cm.
b) Set Chroma2325(BGA265A)to be T144(1280*1024/60HZ)and P105 of full white screen. Test if the
white-balance value is within the specs. Please follow the steps below to adjust if it is beyond the specs.
c) Cut the power. Then press Minus (“-“) key and supply power at the same time to enter into the factory mode.
See the following pictures.
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d) Test white-balance again after Auto Level. Adjustment with hand is necessary if it is beyond the specs just the
same.
e) Select 7x00 item to adjust cool color-temperature and select 6x00 to adjust warm color- temperature. It can
reach to the best effect through adjusting R/G/B value if it inclines to green or blue.
f) Select Exit to the upper menu after completing the adjustment. Then press POWER OFF to exit and save it.
Ⅲ. Steps for writing DDC:
1. Employ PC, and connect the DDC-writing instrument and the instrument that is ready for writing into DDC to
the power of 12v . Connect the sign al cable of the latter to D-USB or DVI of DDC-writing instrument (Th e data-writing of
monitor needs transfer-interface) and link the DDC-writing instrument with PC through printer interface. (See the
schematic picture below)
Connection of DDC-writing instrument for VGA.
2. Seek the document with the expanded name of .BAT in DDC file of this model. It appears the indication of “Input
Serial No.:"after dual-click the document to be ready for DDC-writing.
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3.Input the serial number of the product (For instance: AOC LM729 is 13 bit s), then press ENTER to start writing
4.Check the indication of DDC-writing program at the end. When you see the picture as the schematic picture above,
the “Data compare OK!” means being written well and that’s the end. Please check if the Manufacturer Name,
Vendor Assigned Code, Monitor Name, Serial Number, Week of Manufacture, Year of Manufacture are right. It will
appear “Data compare error !” to indicate failure if the DDC-writing doesn’t perform well. Please check the
power resource and the connection of the signal cable, then return to step 3 by pressing ENTER and re-do it.
5.You can exit the program by pressing Ctrl plus C, then cut the signal cable and the power.
6.The following picture is taking Acer AL1721 EDID for example.
Notes:
1、Make sure the system time of PC is in accordance with the real time before writing.
2、The schematic picture is just as an example for description, the exact content of the DDC is dependent on the
serial number of the BARCORD of this model.
3、Data DDC-writing needs a transfer interface.
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Instruction:DDC-writing needs 4 files:
1. Barcode.txt (Supply Barcode length and flow number)
2. *.EXE (DDC-writing program)
3. WR.bat (Group order file for cycling utilization of *EXE, and dual-click this file when perform
DDC-writing)
015G8126 6 MAIN FRAME
023G3178690 6A LOGO
033G4788 PC L STAND-CAP
034G1469EPC B BEZEL
040G 152509 RECYCLE LABEL
040G 152512 RECYCLE LABEL
044G3918 1 EPS(L)
044G3918 2 EPS(R)
044G3918624 1A CARTON
045G 88606 H PE BAG FOR BASE
045G 88609 C EPE COVER
045G 88626 H PE BAG FOR MONITOR
052G 1186 SMALL TAPE
052G 1211 A 165MINIUM TAPE
052G 1211 B AL TAPE
052G6022 1500 SMALL TAPE
089G 173 56 8 AUDIO CABLE
R336 061L0603000 RST SM 0603 JUMP MAX 0R05 R
FB203 061L0603000 RST SM 0603 JUMP MAX 0R05 R
FB202 061L0603000 RST SM 0603 JUMP MAX 0R05 R
FB201 061L0603000 RST SM 0603 JUMP MAX 0R05 R
D211 093G 64 33 DIO SIG SM BAV99 (PHSE)R
D212 093G 64 33 DIO SIG SM BAV99 (PHSE)R
D213 093G 64 33 DIO SIG SM BAV99 (PHSE)R
D210 093G 64 42 P BAV70 SOT-23
ZDD404 093G 39S 34 T UDZS5.6B
ZDD403 093G 39S 34 T UDZS5.6B
ZDD402 093G 39S 34 T UDZS5.6B
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19" LCD Color Monitor HP VS19E
ZDD401 093G 39S 34 T UDZS5.6B
ZD211 093G 39S 34 T UDZS5.6B
ZD210 093G 39S 34 T UDZS5.6B
ZD209 093G 39S 34 T UDZS5.6B
ZD208 093G 39S 34 T UDZS5.6B
ZD207 093G 39S 34 T UDZS5.6B