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17" LCD Color Monitor HP L1740
Service
Service
Service
Horizontal Frequency
24- 83 kHz
TABLE OF CONTENTS
Description Page Description Page
Table Of Contents......................................................1 7. Schematic.....................................................14
Revision List........................................................2 7.1 Main Board....................................................14
1. Monitor Specification...............................................3 7.2 Power Board...............................................18
2. LCD Monitor Description........................................4 8.PCB Layout...............................................20
3. Operation Instruction............................................5 8.1. Main Board.................................................20
3.1. General Instructions.........................................5 8.2. Power Board..........................................23
3.2. Control Button......................................................5 8.3. Key Board...............................................26
3.3 Adjusting the Picture..........................................6 9. Maintainability................................................27
4. Input/Output Specification.......................................7 9.1. Equipments and Tools Requirement..............27
4.1. Input Signal Connector.........................................7 9.2. Trouble Shooting.......................................28
4.2. Factory Preset Display Modes...........................8 9.2.1 Main Board..........................................28
4.3. Power Supply Requirements...............................8 9.2.2 Power Board.......................................30
5. Panel Specification.........................................9 9.2.3 Key Board..........................................32
5.1. General Feature...............................................9 10 White-Balance, Luminance adjustment...33
5.2. Optical Characteristics....................................9 11.Mechanical Instructions.................................35
6. Block Diagram.....................................................10 12. Monitor Exploded View.....................................39
6.1 Software Flow Chart.......................................10 13. BOM List.....................................................40
6.2.Electrical Block Diagram...........................12 14. Different Parts List.......................................54
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
1
17" LCD Color Monitor HP L1740
Revision List
Version Date Revision History TPV Model Name
T77GNNDKCKHFQE
A00 Mar.-20-2007 Initial release
T77CNNDKCKHFQE
T77ANNDKCKHFQE
A01 Apr.-06-2007 Add TPVDW Model in Item 14
T76CNNDBCKHPQE
1.Update Layout and BOM
A02 May.-23-2007 T77CNNDBCKHFQE
2.Add TPVDW Model in Item 14
2
17" LCD Color Monitor HP L1740
1. Monitor Specification
3
17" LCD Color Monitor HP L1740
2. LCD Monitor Description
The LCD Monitor will contain main board, power board, 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.
Monitor Block Diagram
Flat Panel and
CCFT Drive.
CCFL backlight
Power Board Main Board
RS232 Connector
(Include adapter board)
For white balance
adjustment in
factory mode
Keyboard
Video signal, DDC
AC-IN HOST Computer
110V-240V
4
17" LCD Color Monitor HP L1740
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 Button
5
17" LCD Color Monitor HP L1740
3.3 Adjust the Picture
1. If the monitor is not already on, press the Power switch to turn on the monitor.
2. Press the Menu button on the monitor's front panel to launch the OSD Main Menu.
3. To navigate through the OSD Menu, press the + (Plus) buttonon the monitor's front panel to scroll up, or the