17" LCD Color Monitor |
HP L1706 |
Service
Service
Service
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Horizontal Frequency |
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3083 kHz |
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TABLE OF CONTENTS |
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Description |
Page Description |
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Table Of Contents.......……..............................…........1
Revision List.…........................................……......2
1.Monitor Specification..............................………........3
2.LCD Monitor Description…………………………….......4
3.Operation Instruction…………...............……...........5
3.1.General Instructions...........................…...........5
3.2.Control Button…………….…..............……...............5 3.3 Adjusting the Picture...........................…............6
4.Input/Output Specification............……………............7
4.1.Input Signal Connector............………….................7
4.2.Factory Preset Display Modes......…..................8
4.3.Power Supply Requirements...............................9
5.Panel Specification.....………………..................10
5.1.General Feature…….....………………..................10
5.2.Optical Characteristics………………………………11 5.3 Parameter guide line for CCFL Inverter……………..13
6.Block Diagram……...................…………................15
6.1. Monitor Exploded View…………………....….......15
6.2 Software Flow Chart……………………….……….16
6.3. Electrical Block Diagram……………..….......18
7. Schematic……………......................................20
7.1Main Board....……….......................................20
7.2Power Board.….……....................................24 8.PCB Layout..………….......................................26
8.1.Main Board………........................................26
8.2.Power Board….......................................28
8.3.Key Board………............….......................31 9. Maintainability……….......................................32
9.1.Equipments and Tools Requirement..............32
9.2.Trouble Shooting………..............................33 10. White-Balance, Luminance adjustment...39 11. BOM List….....................................................40 12. Different Parts List.........…….……........................52
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 |
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HP L1706 |
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Revision List |
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Version |
Date |
Revision History |
TPV Model Name |
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A00 |
Apr.-04-2007 |
first release |
T76CM9DKAKHPNE |
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A01 |
May.-08-2007 |
Add TPVDW Model in Item 12 |
T76GM9DKAKHPNE |
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T76GM9DPAKHPNE |
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A02 |
Jun.-07-2007 |
Add TPVDW Model in Item 12 |
T76SM9DKAKHPNE |
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A03 |
Jun.-19-2007 |
Add TPVDW Model in Item 12 |
T76CM9DPAKHPNE |
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A04 |
Sep.-26-2007 |
Add TPVDW Model in Item 12 |
T76GM9DBAKHFNNE |
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A05 |
Oct.-10-2007 |
Add TPVDW Model in Item 12 |
T76SM9DBAKHFNNE |
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A06 |
Oct.-16-2007 |
Add TPVDW Model in Item 12 |
T76SM9DAAKHANNE |
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A07 |
Oct.-18-2007 |
Add TPVDW Model in Item 12 |
T76CM9DBAKHFNNE |
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A08 |
Nov.-01-2007 |
Add TPVDW Model in Item 12 |
T76GM9DNAKHANNE |
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A09 |
Nov.-09-2007 |
Add TPVDW Model in Item 12 |
T76SM9DKAKHPN1E |
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T76SM9DPAKHPNE |
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A10 |
Dec.-09-2007 |
Add Second Panel in Item 5 |
LTM170EUL31-8TM |
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2
17" LCD Color Monitor |
HP L1706 |
1. Monitor Specification
3
17" LCD Color Monitor |
HP L1706 |
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 voltage to drive the backlight of panel and the main board chips each voltage.
Monitor Block Diagram
CCFT Drive. |
Flat Panel and |
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CCFL backlight |
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Power Board |
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Main Board |
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RS232 Connector |
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(Include adapter and inverter) |
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For white balance |
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adjustment in |
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factory mode |
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Audio board |
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Key board |
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AC-IN |
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Video signal, DDC |
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HOST Computer |
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110V-240 |
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4
17" LCD Color Monitor |
HP L1706 |
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.
3.2Control Buttons
5
17" LCD Color Monitor |
HP L1706 |
3.3 Adjust the Picture
Use the On-Screen Display (OSD) to adjust the screen image based on your viewing preferences. To access the OSD, do the following:
1.If the monitor is not already on, press the Power switch to turn on the monitor.
2.To access the OSD Menu, press the Menu button on the monitor’s front panel.
3.To navigate through the OSD Menu, press the + (Plus) button on the monitor’s front panel to scroll up, or the – (Minus) button to scroll in reverse.
4.To select an item from the OSD Menu, use the + or – buttons to scroll to and highlight your selection, then press the Menu button to select that function.
5.Adjust the item using the + or – buttons on the front panel to adjust the scale.
6.After adjusting the function, select Save and Return, or Cancel if you don’t want to save the setting, then select Exit from the Main Menu.
If the buttons remain untouched for 10 seconds while displaying a menu, new adjustments will be discarded and the settings will revert to previous settings and exit the menu.
6
17" LCD Color Monitor |
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HP L1706 |
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4. Input/Output Specification |
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4.1 Input Signal Connector |
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Signal |
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Signal |
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1 |
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Red Video |
9 |
+5 V (from PC) |
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2 |
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Green Video |
10 |
Ground |
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3 |
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Blue Video |
11 |
Ground |
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4 |
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Ground |
12 |
DDC-serial Data |
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Detect Cable |
13 |
Horizontal Sync |
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6 |
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Red GND |
14 |
Vertical Sync |
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7 |
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Green GND |
15 |
DDC-serial Clock |
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8 |
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Blue GND |
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VGA connector layout
PIN 1 |
PIN 5 |
PIN 11 |
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7
17" LCD Color Monitor |
HP L1706 |
4.2 Factory Preset Display Modes
8
17" LCD Color Monitor |
HP L1706 |
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4.3 Power Supply Requirements |
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Parameter |
Range |
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AC Line Voltage range |
100 to 240V |
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AC Line Frequency range |
47 to 63 Hz |
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Peak surge Current |
< 55 A MAX AT 220VAC and cold starting |
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Leakage Current |
< 3.5 mA |
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Power Consumption |
≤37W |
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9
17" LCD Color Monitor |
HP L1706 |
5. Panel Specification
5.1 General Feature
CLAA170EA07P
LTM170EUL31-8TM
10
17" LCD Color Monitor |
HP L1706 |
5.2 Optical Characteristics
CLAA170EA07P
11
17" LCD Color Monitor |
HP L1706 |
LTM170EUL31-8TM
12
17" LCD Color Monitor |
HP L1706 |
5.3 Parameter guide line for CCFL Inverter
TFT LCD Module:
CLAA170EA07P
LTM170EUL31-8TM
13
17" LCD Color Monitor |
HP L1706 |
Back Light Unit:
CLAA170EA07P
LTM170EUL31-8TM
14
17" LCD Color Monitor |
HP L1706 |
6.2 Software Flow Chart
1
Y
2 3
N
4
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Y |
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7 8
Y
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11 |
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Y |
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N |
12 |
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13 |
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Y |
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Y |
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14 |
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15 |
N |
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16 |
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Y |
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17 |
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18 N 19
Y
16
17" LCD Color Monitor |
HP L1706 |
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?
17
17" LCD Color Monitor |
HP L1706 |
6.3Electrical Block Diagram
6.3.1Scalar Board
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Panel Interface |
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(CN101) |
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EPR_SDA |
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EEPROM |
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EPR SCL |
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Scalar TSUM16AL |
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(U402) |
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(Include ADC OSD MCU) |
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(U401) |
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RXD |
R |
Hsync, |
DDC_SDA |
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G |
DDC SCL |
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TXD |
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B |
Vsync |
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D-Sub Connector |
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EEPROM |
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(CN405) |
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(U404) |
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DB15_SDA
DB15 SCL
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17" LCD Color Monitor |
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HP L1706 |
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6.3.2 Inverter / Power Board |
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AC inlet |
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filter |
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Rectifier and |
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Transform |
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Rectifier and |
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12V/5V |
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filter |
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filter D20; |
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D921 |
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To main board |
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Start circuit R905; R909, R910 |
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OVP circuit |
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Switching circuit
Feedback
PWM control
circuit 12V
IC&MOSFET
IC902;IC921
On/off control |
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Start circuit |
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PWM control IC |
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Push-pull |
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LC resonant |
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Lamp |
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circuit |
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Dimming control |
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Feedback circuit |
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19
17" LCD Color Monitor
7. Schematic
7.1 Main Board
11/21 CN405 #11 change to NC
CN405
17 |
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RED+ |
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FB410 |
150 OHM |
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11 |
1 |
RED+ |
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RED- |
GREEN+ |
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FB411 |
150 OHM |
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12 |
2 |
GREEN+ |
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GREEN- |
BLUE+ |
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FB412 |
150 OHM |
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13 |
3 |
BLUE+ |
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751/10W |
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751/10W |
14 |
8 |
BLUE- PC5V |
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R438 |
R439 |
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10 |
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4 |
PC5V |
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9 |
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5 |
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RED- |
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DB15 |
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GREEN- |
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BLUE- |
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3 |
D403 |
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D404 |
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D405 |
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BAV99 |
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BAV99 |
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BAV99 |
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D406 |
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ESD_5V |
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MLL5232B 5.6V |
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C4392 |
0.1uF1 |
C4402 |
0.1uF1 |
C4412 |
0.1uF1 |
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VGA_CON |
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HSI |
FB409 |
150 OHM |
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R446 |
1K 1/10W |
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VSI |
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R447 |
D408 |
D409 |
R448 |
C442 |
R449 |
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C443 |
MLL5232B 5.6V |
MLL5232B 5.6V |
2.2K 1/10W |
33pF |
2.2K 1/10W |
220pF |
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D411 |
D412 |
MLL5232B 5.6V |
MLL5232B 5.6V |
HP L1706
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R434 |
56 1/10W |
C432 |
0.047uF |
RIN |
2 |
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R435 |
56 1/10W |
C433 |
0.047uF |
GIN |
2 |
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R436 |
56 1/10W |
C434 |
0.047uF |
BIN |
2 |
+5V |
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R440 |
R437 |
470 1/10W |
C435 |
0.001uF |
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1/10W75 |
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SOG |
2 |
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R470 |
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R441 |
100 1/10W |
C436 |
0.047uF |
GNDR 2 |
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1K 1/10W |
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R442 |
100 1/10W |
C437 |
0.047uF |
GNDG 2 |
ESD_5V |
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R443 |
100 1/10W |
C438 |
0.047uF |
GNDB 2 |
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D425 |
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+5V |
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MLL5232B 5.6V |
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+5V |
2,3 |
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R444 |
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10K 1/10W |
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R445 |
100 1/10W |
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11/27 D407 change to BAV70(93G-64-42-P) |
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DET_VGA 2 |
+5VA |
PC5V |
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HSYNC 2 |
1 |
2 |
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1K 1/10W |
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VSYNC 2 |
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D407 |
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BAV70 |
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D410 |
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3 |
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MLL5232B 5.6V |
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R450 |
R451 |
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C444 |
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U404 |
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10K 1/10W |
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10K 1/10W |
R452 |
8 |
VCC |
A0 |
1 |
0.1uF |
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10K 1/10W |
7 |
2 |
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SCL_VGA |
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WP |
A1 |
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R453 |
47 1/10W |
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6 |
3 |
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SCL |
A2 |
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SDA_VGA |
R454 |
47 1/10W |
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5 |
4 |
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SDA VSS |
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24LC02B/SNG |
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2 DDCA_SDA |
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2 DDCA_SCL |
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DDC_WP 2 |
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Title |
715G2433-A(L1706 down size) |
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Size |
Document Number |
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Rev |
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B |
INPUT |
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D |
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Date: |
Thursday , December 07, 2006 |
Sheet 1 of |
4 |
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20