HP L1506 Service Manual
SERVICE MANUAL
15” LCD Monitor
L1506
THESE DOCUMENTS ARE FOR REPAIR SERVICE INFORMATION ONLY. EVERY REASONABLE EFFORT HAS BEEN MADE TO ENSURE THE ACCURACY OF THIS MANUAL; WE CANNOT GUARANTEE THE ACCURACY OF THIS INFORMATION AFTER THE DATE OF PUBLICATION AND DISCLAIMS RELIABILITY FOR CHANGES, ERRORS OR OMISSIONS.
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HP L1506 Service Manual |
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Table of Contents |
Table of Contents --------------------------------------------------------------------------------------------------------------------------------- |
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Revision List---------------------------------------------------------------------------------------------------------------------------------------- |
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1.Product Feature---------------------------------------------------------------------------------------------------------------------------------- |
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2.LCD Monitor Description -------------------------------------------------------------------------------------------------------------------- |
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3.Operation Instructions ------------------------------------------------------------------------------------------------------------------------- |
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3.1 General Instructions ----------------------------------------------------------------------------------------------------------------------- |
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3.2 |
Control Button ---------------------------------------------------------------------------------------------------------------------------- |
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3.3 Adjusting The Picture ------------------------------------------------------------------------------------------------------------------- |
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4. Input/Output Specification ----------------------------------------------------------------------------------------------------------------- |
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4.1 |
Input Signal Connector ----------------------------------------------------------------------------------------------------------------- |
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4.2 |
Factory Preset Display Modes ------------------------------------------------------------------------------------------------------- |
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4.3 |
Power Supply Requirements --------------------------------------------------------------------------------------------------------- |
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5.Panel Specification ------------------------------------------------------------------------------------------------------------------------- |
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5.1 General Feature -------------------------------------------------------------------------------------------------------------------------- |
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5.2 |
Optical Characteristics ----------------------------------------------------------------------------------------------------------------- |
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6. Block Diagram -------------------------------------------------------------------------------------------------------------------------------- |
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6.1 |
Monitor Exploded View-------------------------------------------------------------------------------------------------------------------- |
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6.2 |
Software Flow Chart----------------------------------------------------------------------------------------------------------------------- |
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6.3 |
Electrical Block Diagram --------------------------------------------------------------------------------------------------------------- |
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6.3.1 Scalar Board ------------------------------------------------------------------------------------------------------------------------ |
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6.3.2 Inverter/Power Board ------------------------------------------------------------------------------------------------------------- |
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HP L1506 Service Manual |
7. Schematic -------------------------------------------------------------------------------------------------------------------------------------- |
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7.1 Main Board ------------------------------------------------------------------------------------------------------------------------------- |
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7.2 Power Board ----------------------------------------------------------------------------------------------------------------------------- |
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8. PCB Layout ------------------------------------------------------------------------------------------------------------------------------------ |
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8.1 Main Board -------------------------------------------------------------------------------------------------------------------------------- |
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8.2 Inverter/Power Board ------------------------------------------------------------------------------------------------------------------- |
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8.3 Key board --------------------------------------------------------------------------------------------------------------------------------- |
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9. Maintainability --------------------------------------------------------------------------------------------------------------------------------- |
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9.1 Equipments and Tools Requirements ---------------------------------------------------------------------------------------------- |
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9.2 Trouble Shooting ------------------------------------------------------------------------------------------------------------------------ |
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9.2.1 Main Board --------------------------------------------------------------------------------------------------------------------------- |
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9.2.2 Power/Inverter Board -------------------------------------------------------------------------------------------------------------- |
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9.2.3 Key Pad Board -------------------------------------------------------------------------------------------------------------------- |
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10. White-Balance, Luminance Adjustment -------------------------------------------------------------------------------------------- |
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11. Check List after replacing LCD Main board ------------------------------------------------------------------------------------------- |
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12. EDID Content ---------------------------------------------------------------------------------------------------------------------------------- |
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13. BOM List ---------------------------------------------------------------------------------------------------------------------------------- |
42 66 |
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HP L1506 Service Manual |
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Revision List |
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Revision |
Date |
Change Description |
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TPV Model name |
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A00 |
Jun-21-05 |
Initial release |
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T560KC4DKHHPNP |
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1. Product Feature
LCD Panel |
Driving system |
TFT Color LCD |
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HP L1506 Service Manual |
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Panel |
CLAA150XP02 |
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Size |
38.1cm(15.0") |
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Pixel pitch |
0.297mm( H )x 0.297mm( V ) |
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Viewable angle |
130˚ (H) 100˚ (V) |
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Response time (typ.) |
<16 ms |
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Brightness(Min) |
250 |
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Contrast |
400:1 |
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Video |
Analog /Digital |
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Sync. Type |
H/V TTL |
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Input |
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H-Frequency |
30kHz – 63kHz |
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V-Frequency |
50-76Hz |
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Display Colors |
Over 16 million Colors |
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Dot Clock |
80MHz |
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Max. Resolution |
1024 x768 |
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Plug & Play |
VESA DDC2BTM |
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Power Consumption |
ON Mode |
<23W |
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OFF Mode |
<1W |
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Screen Size |
Horizontal : 306mm |
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Vertical : 230 mm |
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Environmental |
Operating Temp: 5°C to 35°C |
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Storage Temp.: -20°C to 60°C |
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Considerations |
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Operating Humidity : 20% to 80% |
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MAIN DIMENSIONS |
Packaged(W*H*D) |
395mm*395mm*155mm |
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Unpackaged(W*H*D) |
340mm*355mm*203mm |
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Weight (N. W.) |
Packaged |
≤4.6Kg Unit |
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Unpackaged |
≤3.5Kg Unit |
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2. LCD Monitor Description
The LCD Monitor will contain main board, power board, key board and which house the flat panel control logic, brightness control logic and DDC.
5
HP L1506 Service Manual
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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For white balance |
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adjustment in |
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factory mode |
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Keyboard |
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DC-IN |
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Video signal, DDC |
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HOST Computer |
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12V |
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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:
6
HP L1506 Service Manual
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. |
Manu |
Left / Down Right / Up |
Power |
A.Menu button / Exit
B.Left/(Down) button / Auto button
C.Up button
D.Power button
3.3Adjust the Picture
7
1. Brightness
2. Contrast
Image
3.Control
4. Color
5. Language
6. Management
7. OSD Control
8. Information
9.Factory Reset
10. Exit
HP L1506 Service Manual
Adjust the brightness.
Adjust the contrast
Adjust the:
zAuto Adjustment: Adjusts the main settings and produces a stable, centered image.
zH-Position: horizontal position of the screen image.
zV-Position: vertical position of the screen image.
zClock: frequency of the pixel clock to minimize vertical bar.
zPhase: phase value to minimize horizontal jitters.
z9300K: recall 9300K color
z6500K: recall 6500K color
zSRGB: recall SRGB color
zCustom Color: adjusts the color tint of white, and the red, green, and blue (RGB) mix for colors.
Shows the language of the OSD window.
zPower Saver: enable/disable power saving
zPower On Recall: enable/disable power recall
zMode Display: enable/disable mode display
zSleep Timer: set sleep timer
zBasic Menu: set to basic menu
OSD (on Screen Display) settings: adjusts the H/V position, timeout, On Screen Display window.
Current setting, recommended setting, serial number, total hours, backlight hours, Exit.
Resets the display to original factory settings for color, brightness, phase, and clock.
Exit the current OSD window.
4. Input/Output Specification
4.1 Input Signal Connector
PIN |
MNEMONIC |
SIGNAL |
PIN |
MNEMONIC |
SIGNAL |
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1 |
RV |
Red Video |
9 |
+3.3/+5 V |
+3.3/+5 V (from PC) |
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2 |
GV |
Green Video |
10 |
SG |
Sync Ground |
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BV |
Blue Video |
11 |
NC |
None (Reserved for Factory |
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Use) |
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NC |
No Connect |
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SDA |
DDC Data |
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5 |
GND |
Ground (DDC |
13 |
HS |
Horizontal Sync |
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Return)&Cable Detect |
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RG |
Red GND |
14 |
VS |
Vertical Sync |
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7 |
GG |
Green GND |
15 |
SCL |
DDC Clock |
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BG |
Blue GND |
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8 |
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HP L1506 Service Manual
VGA connector layout
PIN 1 |
PIN 5 |
PIN 11 |
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4.2 Factory Preset Display Modes
9
HP L1506 Service Manual
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Pixel |
Horz Freq |
Horz |
Vert Freq |
Vert |
Pixel Clk |
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Preset |
Format |
(KHz) |
Polarity |
(Hz) |
Polarity |
(MHz) |
Source |
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1 |
640 x 480 |
31.469 |
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59.940 |
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25.175 |
VGA |
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2 |
640 x 480 |
37.861 |
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72.809 |
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31.500 |
VESA |
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3 |
640 x 480 |
37.500 |
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75.000 |
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31.500 |
VESA |
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4 |
720 x 400 |
31.469 |
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70.087 |
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28.322 |
VGA |
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5 |
800 x 600 |
37.879 |
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60.317 |
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40.000 |
VESA |
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6 |
800 x 600 |
48.077 |
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72.188 |
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50.000 |
VESA |
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7 |
800 x 600 |
46.875 |
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75.000 |
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49.500 |
VESA |
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8 |
832 x 624 |
49.726 |
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74.551 |
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57.284 |
MAC |
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9 |
1024 x 768 |
48.363 |
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60.004 |
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65.000 |
VESA |
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10 |
1024 x 768 |
56.476 |
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70.069 |
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75.000 |
VESA |
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11 |
1024 x 768 |
60.023 |
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75.029 |
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78.750 |
VESA |
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12 |
1152 x 870 |
68.68 |
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75.06 |
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100.000 |
Mac |
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13 |
1152 x 900 |
71.71 |
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76.05 |
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105.561 |
Sun |
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14 |
1280 x 1024 |
63.98 |
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60.02 |
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108.000 |
VESA |
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15 |
1280 x 1024 |
79.97 |
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75.02 |
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135.000 |
VESA |
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4.3 Power Supply Requirements
PARAMETER |
RANGE |
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AC Input Voltage |
90 to 265V |
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AC Input Frequency |
47 to 63 Hz |
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Inrush Current |
50A MAX AT 220VAC and 30A AT 120VAC |
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Leakage Current |
5 mA MAX at 120VAC |
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Power consumption |
≤23W |
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HP L1506 Service Manual
5. PANEL SPECIFICATION
5.1 General Feature
11
HP L1506 Service Manual
5.2 Optical Characteristics
12
HP L1506 Service Manual
6. Block Diagram
6.1 Monitor Exploded View
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HP L1506 Service Manual
6.2 Software Flow Chart
1
2 Y 3
N
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5 N
Y
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7 N 8
Y
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N |
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Y |
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N 12 |
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N |
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Y |
Y |
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N |
16 |
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Y |
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1)MCU initialize.
2)Is the eeprom blank?
3)Program the eeprom by default values.
4)Get the PWM value of brightness from eeprom. Check the pin PANEL1 and PANEL2 to tell which panel to get with it.
5)Is the power key pressed?
6)Clear all global flags.
7)Are the AUTO and SELECT keys pressed?
8)Enter factory mode.
9)Saving 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 and digital port, are there any signals coming?
13)Does the scalar send out a interrupt request?
14)Wake up the scalar.
15)Are there any signals coming from analog or digital port?
16)Display " No Input Signal " 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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HP L1506 Service Manual
6.3 Electrical Block Diagram
6.3.1 Scalar Board Block Diagram
Panel Interface
(CN503)
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Scalar TSU17AK |
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MCU |
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(U601) |
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(Include ADC, OSD) |
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EPR_SDA |
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(U401) |
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R |
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DDC_SDA |
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EPR SCL |
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RXD |
Hsync, |
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G |
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DDC SCL |
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TXD |
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B |
Vsync |
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OSD |
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EEPROM |
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D-Sub Connector |
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EEPROM |
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Control Interface |
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(KEYPAD) |
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(U602) |
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(CN301) |
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(U301) |
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DB15_SDA
DB15 SCL
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HP L1506 Service Manual
6.3.2 Inverter / Power Board Block Diagram
Inverter Block Diagram
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