HP Pavilion F1703 User manual

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SERVICE MANUAL
17” LCD Monitor
F1703
THESE DOCUMENTS ARE FOR REPAIR SERVICE INFORMATION ONLY. EVERY REASONABLE
EFFORT HAS BEEN MADE TO ENSURE THE ACCURACY OF THIS MANUAL; WE CANNOTGUARANTEE THE
ACCURACY OF THIS INFORMATION AFTER THE DATE OF PUBLICATION AND DISCLAIMS RELIABILITY
FOR CHANGES, ERRORS OR OMISSIONS.

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Table of Content
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 ------------------------------------------------------------------------------------------------------ 08
4.1 Input Signal Connector -------------------------------------------------------------------------------------------------------- 08
4.2 Factory Preset Display Modes ---------------------------------------------------------------------------------------------- 09
4.3 Power Supply Requirements -------------------------------------------------------------------------------------------------09
5.Panel Specification ------------------------------------------------------------------------------------------------------------------- 10
5.1 General Feature ----------------------------------------------------------------------------------------------------------------- 10
5.2 Optical Characteristics --------------------------------------------------------------------------------------------------------- 11
6. Block Diagram ---------------------------------------------------------------------------------------------------------------------- 12
6.1 Monitor Exploded View ------------------------------------------------------------------------------------------------------- 12
6.2 Software Flow Chart ------------------------------------------------------------------------------------------------------------ 13
6.3 Electrical Block Diagram ------------------------------------------------------------------------------------------------------- 15
6.3.1 Scalar Board ---------------------------------------------------------------------------------------------------------------- 15
6.3.2 Inverter/Power Board ----------------------------------------------------------------------------------------------------- 16
7. Schematic ---------------------------------------------------------------------------------------------------------------------------- 17
7.1Main Board ---------------------------------------------------------------------------------------------------------------------- 17
7.2 Inverter Board -------------------------------------------------------------------------------------------------------------------- 23
7.3 Key Board -------------------------------------------------------------------------------------------------------------------- 25
8. PCB Layout -------------------------------------------------------------------------------------------------------------------------- 27
8.1 Main Board ----------------------------------------------------------------------------------------------------------------------- 27
8.2 Adapter Board ------------------------------------------------------------------------------------------------------------------ 27
8.3 Inverter Board ------------------------------------------------------------------------------------------------------------------- 28
8.4 Power Key Board --------------------------------------------------------------------------------------------------------------- 28
9. Maintainability ----------------------------------------------------------------------------------------------------------------------- 29
9.1 Equipments and Tools Requirements -------------------------------------------------------------------------------------- 29
9.2 Trouble Shooting ---------------------------------------------------------------------------------------------------------------- 30
9.2.1 Main Board --------------------------------------------------------------------------------------------------------------- 30
9.2.2 Inverter Board --------------------------------------------------------------------------------------------------- 32
9.2.3 Key Pad Board ------------------------------------------------------------------------------------------------------------- 34
10. White-Balance, Luminance Adjustment --------------------------------------------------------------------------------- 35
11. EDID Content ---------------------------------------------------------------------------------------------------------------------- 37
12. BOM List ----------------------------------------------------------------------------------------------------------------------------- 38

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Revision List
Version Date Revision History TPV Mode Name
A00 Mar.-06-06 Initial release T783KSHHCZHAA

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1.Monitor Specification
Items Description
Driving system TFT Color LCD
Panel LTM170EU-L11
Size (Active Area) 337.920(H) x270.336 (V)
Pixel pitch 0.264mm( H )x 0.264mm( V )
Viewable angel 150˚(H) 135˚(V) (CR≥10)
Response time (typ.) 13 ms
LCD Panel
Contrast Ratio 500:1
Video Analog
Sync. Type H/V T TL
H-Frequency 30kHz – 83kHz
Input
V-Frequency 56-76Hz
Display Colors 16.2 million Colors
Dot Clock 140 MHz
Max. Resolution 1280 x 1024
Plug & Play VESA DDC2BTM
ON Mode ≤50W
Sleep Mode ≤2W
Power Consumption
OFF Mode ≤2W
Power Source 90~264VAC,47~63Hz
Environmental
Considerations
Operating Temp: 5°C to 35°C
Storage Temp.: -20°C to 60°C
Operating Humidity : 20% to 80%
Altitude Operating 0 to 12,000 feet

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2.LCD Monitor Description
The LCD Monitor will contain a main board, a power board, and a key 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 adapter and inverter)
Flat Panel and
CCFL backlight
Main Board RS232 Connector
For white balance
adjustment in
factory mode
HOST Computer
CCFT Drive.
AC-IN
90V-264V
Monitor Block Diagram
Keyboard

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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.
-Auto Adjust Key:
The Auto Adjust Key is used to automatically set the H Position, V Position, Clock and Phase.
-Left / Right Button:
The Left/Right Button is used to control the monitor functions. Press to switch functions or adjust settings.
-Power Indicator:
Blue — Power On mode.
Amber — Power Saving mode.
Blank — Power Off Mode.

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3.3 Adjust the Picture

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4. Input/Output Specification
4.1 Input Signal Connector
Pin Mnemonic Signal Pin Mnemonic Signal
1 RV Red Video 9 +5 V +5 V (from PC)
2 GV Green Video 10 SG Sync Ground
3 BV Blue Video 11 NC None (available for mfg use if
required)
4 NC
None（available for mfg use if
required）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
VGA connector layout
PIN 1 PIN 5
PIN 11

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4.2 Factory Preset Display Modes
Preset
Pixel
Format
Horz Freq
(KHz)
Horz
Polarity
Vert Freq
(Hz)
Vert
Polarity
Pixel Clk
(MHz) Source
1 640 x 350 31.469 + 70.086 - 25.175 VGA
2 640 x 480 31.469 - 59.940 - 25.175 VGA
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 46.875 + 75.000 + 49.500 VESA
7 1024 x 768 48.363 - 60.004 - 65.000 VESA
8 1024 x 768 56.476 - 70.069 - 75.000 VESA
9 1024 x 768 60.023 + 75.029 + 78.750 VESA
10 1280 x 1024 63.981 + 60.02 + 108.0 VESA
11 1280 x 1024 79.976 + 75.035 + 135.0 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 30AAT 120VAC
Leakage Current 3.5 mA @264 VAC and 50Hz
Power consumption ≤50W

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5. Panel Specification
5.1GeneralFeature

- High contrast ratio, high aperture structure
- TN (Twisted Nematic) mode
- Wide viewing angle
- High speed response
- SXGA (1280 x 1024 pixels) resolution
- Low power consumption
- 2 dual CCFTs (Cold Cathode Fluorescent Tube)
- DE (Data Enable) mode
- LVDS (Low Voltage Differential Signaling) interface (2pixel/clock)
- Compact Size Design

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5.2 Optical Characteristics

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6. Block Diagram
6.1 Monitor Exploded View

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6.2SoftwareFlowChart
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
15
Y
N16
17
19
Y
N
18

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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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6.3 Electrical Block Diagram
6.3.1 Scalar Board Block Diagram

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6.3.2 Inverter / Power Board Block Diagram
AC inlet filter Rectifier and filter
Start circuit
Transformer
Switching circuit
PWM control IC&MOSFET
Rectifier and filter
Feedback circuit
12V
Start circuit
On/off control
PWM control IC BUCK and chock LC royer circuit Ballast capacitor lamp
Dimming control Feebback circuit
To main board
12V
OVP circuit

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7. Schematic
7.1 Main Board

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