HP L1506 User manual

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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Table of Contents
Table of Contents --------------------------------------------------------------------------------------------------------------------------------- 02
Revision List---------------------------------------------------------------------------------------------------------------------------------------- 04
1.Product Feature----------------------------------------------------------------------------------------------------------------------------------05
2.LCD Monitor Description --------------------------------------------------------------------------------------------------------------------05
3.Operation Instructions -------------------------------------------------------------------------------------------------------------------------06
3.1 General Instructions -----------------------------------------------------------------------------------------------------------------------06
3.2 Control Button ----------------------------------------------------------------------------------------------------------------------------07
3.3 Adjusting The Picture -------------------------------------------------------------------------------------------------------------------07
4. Input/Output Specification ----------------------------------------------------------------------------------------------------------------- 09
4.1 Input Signal Connector -----------------------------------------------------------------------------------------------------------------09
4.2 Factory Preset Display Modes -------------------------------------------------------------------------------------------------------10
4.3 Power Supply Requirements ---------------------------------------------------------------------------------------------------------10
5.Panel Specification -------------------------------------------------------------------------------------------------------------------------11
5.1 General Feature --------------------------------------------------------------------------------------------------------------------------11
5.2 Optical Characteristics -----------------------------------------------------------------------------------------------------------------12
6. Block Diagram --------------------------------------------------------------------------------------------------------------------------------13
6.1 Monitor Exploded View--------------------------------------------------------------------------------------------------------------------13
6.2 Software Flow Chart-----------------------------------------------------------------------------------------------------------------------14
6.3 Electrical Block Diagram ---------------------------------------------------------------------------------------------------------------15
6.3.1 Scalar Board ------------------------------------------------------------------------------------------------------------------------15
6.3.2 Inverter/Power Board -------------------------------------------------------------------------------------------------------------16

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7. Schematic --------------------------------------------------------------------------------------------------------------------------------------18
7.1 Main Board -------------------------------------------------------------------------------------------------------------------------------18
7.2 Power Board -----------------------------------------------------------------------------------------------------------------------------24
8. PCB Layout ------------------------------------------------------------------------------------------------------------------------------------26
8.1 Main Board --------------------------------------------------------------------------------------------------------------------------------26
8.2 Inverter/Power Board -------------------------------------------------------------------------------------------------------------------27
8.3 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 Power/Inverter Board --------------------------------------------------------------------------------------------------------------33
9.2.3 Key Pad Board --------------------------------------------------------------------------------------------------------------------35
10. White-Balance, LuminanceAdjustment -------------------------------------------------------------------------------------------- 36
11. Check List after replacing LCD Main board -------------------------------------------------------------------------------------------37
12. EDID Content ----------------------------------------------------------------------------------------------------------------------------------41
13. BOM List ----------------------------------------------------------------------------------------------------------------------------------42～66

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Revision List
Revision Date Change Description TPV Model name
A00 Jun-21-05 Initial release T560KC4DKHHPNP
1. Product Feature
LCD Panel Driving system TFT Color LCD

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Panel CLAA150XP02
Size 38.1cm(15.0")
Pixel pitch 0.297mm( H )x 0.297mm( V )
Viewable angle 130˚(H) 100˚(V)
Response time (typ.) <16 ms
Brightness(Min) 250
Contrast 400:1
Video Analog /Digital
Sync. Type H/V TTL
H-Frequency 30kHz – 63kHz
Input
V-Frequency 50-76Hz
Display Colors Over 16 million Colors
Dot Clock 80MHz
Max. Resolution 1024 x768
Plug & Play VESA DDC2BTM
Power Consumption ON Mode <23W
OFF Mode
<1W
Screen Size Horizontal : 306mm
Vertical : 230 mm
Environmental
Considerations
Operating Temp: 5°C to 35°C
Storage Temp.: -20°C to 60°C
Operating Humidity : 20% to 80%
Packaged(W*H*D) 395mm*395mm*155mm
MAIN DIMENSIONS Unpackaged(W*H*D) 340mm*355mm*203mm
Packaged ≤4.6Kg Unit
Weight (N. W.) Unpackaged ≤3.5Kg Unit
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.

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The power board will provideAC to DC Inverter voltage to drive the backlight of panel and the main board chips each
voltage.
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 VGAcard.
-Press the power button to turn on the monitor, the power indicator will light up to Green.
3.2 Control Buttons
-Power Button:
Video signal, DDC
Power Board
Flat Panel and
CCFL backlight
Main Board
Keyboard
RS232 Connector
For white balance
adjustment in
factory mode
HOST Computer
CCFT Drive.
DC-IN
12V
Monitor Block Diagram

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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.
A. Menu button / Exit
B. Left/(Down) button /Auto button
C. Up button
D. Power button
3.3 Adjust the Picture
Manu Left/Down Right/Up Power

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4. Input/Output Specification
4.1 Input Signal Connector
PIN MNEMONIC SIGNAL PIN MNEMONIC SIGNAL
1 RV Red Video 9 +3.3/+5 V +3.3/+5 V (from PC)
2 GV Green Video 10 SG Sync Ground
3 BV Blue Video 11 NC
None (Reserved for Factory
Use)
4 NC No Connect 12 SDA DDC Data
5 GND Ground (DDC
Return)&Cable Detect 13 HS Horizontal Sync
6 RG Red GND 14 VS Vertical Sync
7 GG Green GND 15 SCL DDC Clock
8 BG Blue GND
1. Brightness
Adjust the brightness.
2. Contrast Adjust the contrast
3. Image
Control
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.
4. Color
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.
5. Language Shows the language of the OSD window.
6. Management
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
7. OSD Control OSD (on Screen Display) settings: adjusts the H/V position, timeout, On Screen Display
window.
8. Information Current setting, recommended setting, serial number, total hours, backlight hours, Exit.
9. Factory
Reset Resets the display to original factory settings for color, brightness, phase, and clock.
10. Exit Exit the current OSD window.

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VGA connector layout
PIN 1 PIN 5
PIN 11
4.2 Factory Preset Display Modes

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Preset
Pixel
Format
Horz Freq
(KHz)
Horz
Polarity
Vert Freq
(Hz)
Vert
Polarity
Pixel Clk
(MHz) Source
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
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 30AAT 120VAC
Leakage Current 5 mA MAX at 120VAC
Power consumption ≤23W

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5. PANEL SPECIFICATION
5.1GeneralFeature

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5.2 Optical Characteristics

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6. Block Diagram
6.1 Monitor Exploded View

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6.2 Software Flow Chart
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.
Scalarinitializes.
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
digitalport?
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) ProcesstheOSDdisplay.
19) Read the keyboard. Is the power key
pressed?
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
1
5
Y
N
16
1
7
19
Y
N
18

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6.3 Electrical Block Diagram
6.3.1 Scalar Board Block Diagram
OSD
Control Interface
(KEYPAD)
Scalar TSU17AK
(Include ADC, OSD)
(U401)
MCU
(
U601
)
EEPROM
(U602)
D-Sub Connector
(CN301)
EEPROM
(U301)
Hsync,
V
s
y
nc
R
G
B
RXD
TXD
DB15_SDA
DB15 SCL
EPR_SDA
EPR SCL
Panel Interface
(CN503)
DDC_SDA
DDC SCL

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6.3.2 Inverter / Power Board Block Diagram
Inverter Block Diagram

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Power Block Diagram

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7. Schematic
7.1 Main Board (715G1533-D-MS)
PB[0..11]
VCPU
VAA2
SCHEMATIC
B5
5.PANEL INTERFACE
PB[0..11]
PA[0..9]
GB[0..5]
RB[0..5]
GPO[0..4]
GA[0..3]
BA[0..5]
VLCD
ESP
VLCD_12VOSP
B1
3.INPUT
RIN
GIN
BIN
VSYNC
GNDR
GNDG
GNDB
ST_DET1 HSYNC
SOGDDC_CLK
DDC_DAT
TXD
RXD
DDC_WP
VAA3
TOP
A
HPQ2005-L1506/1706
B
17Wednesday, June 01, 2005
Title
Size Document Number Rev
Date: Sheet of
VLCD_12V
VCC1.8
BA[0..5]
VAA4
FOR
VAA1
HPQ2005
VAA2
VCPU
OSP
L1506/1706
VCC3.3
PA[0..9]
RB[0..5]
VAA3
VCC1.8
GPO[0..4]
VLCD_12V
B4
2.POWER
onPanel_5V/3.3V
onBACKLITE
AdjBACKLITE
VCC3.3
VCC1.8
VAA1
VAA2
VAA3
VAA4
VLCD
VCPU
VLCD_12V
onPanel_12V
GA[0..3]
B2
4.SCALER
VCC1.8
VAA2
VAA3
VAA1
VAA4
VCC3.3
GNDR
AdjBACKLITE
HSYNC
INT
RIN
GIN
GNDG
VSYNC
CSZ
SCL
GNDB
SDA
HWRESET
SOG
BIN
PA[0..9]
GA[0..3]
BA[0..5]
GPO[0..4]
ESP
OSP
AD2
AD3
AD1
AD0
RB[0..5]
GB[0..5]
PB[0..11]
VAA1
VLCD
ESP
B3
6.MCU
onBACKLITE
onPANEL_5V/3.3V
SDA
INT
CSZ
DDC_DAT
ST_DET1
SCL
HWRESET
DDC_CLK
VCPU
RXD
TXD
AD0
AD1
AD2
AD3
onPANEL_12V
DDC_WP
GB[0..5]
VAA4
VLCD
VCC3.3

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R205 4.7K 1/16W
C210
0.1uF
VCPU 6
H3
H8D3.5-2LX
1 2 3
4
5
6 7 8
9
1 2 3
4
5
6 7 8
9
VCC12V
C214
0.1uF
Brightness
VCC5V
+
C208
10uF/16V
VAA1 4
GND
AdjBACKLITE4
TO-263
+
C213
47uF/16V
U202
AIC1084-33M
3
1
2
VIN
ADJ
VOUT
+
C202
220uF/25V
H2
H8D3.5-2LX
1 2 3
4
5
6 7 8
9
1 2 3
4
5
6 7 8
9
VLCD
Q205
PMBS3904 NC
32
1
VCC3.3
D202
DIODE
R218
NC
R210 for L1506
0 1/16W
VLCD_12V 5
R203
1K 1/16W
VAA2
C201
0.1uF
VLCD 5
POWER
A
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27Wednesday, June 01, 2005
Title
Size Document Number Rev
Date: Sheet of
+ C211
47uF/16V
R211
10K 1/16W
Q204
PMBS3904
32
1
R215 NC
10K 1/16W
VCC5V
VAA1
VCC5V
R208
10K 1/16W
C206
1uF
R202
10K 1/16W
VCC5V+
D201 DIODE SCHOTTKY
VCC12V
H4
H8D3.5-2LX
1 2 3
4
5
6 7 8
9
1 2 3
4
5
6 7 8
9
VCC12V
R209 for L1706
NC
VAA4
VCC5V
Q206
NC
VCC12V
NC R214
4.7K 1/16W
C217 NC
0.1uF
FB202
600 OHM
onPanel_12V6
ON_OFF
VCC5V+
VAA2 4
Q203
AO3401
+
C218 NC
10uF/16V
R207 4.7K 1/16W
VCC5V
VCC3.3
GND
Q202
PMBS3904
32
1
VAA4 4
R212 4.7K 1/16W
GND
R220 NC
0 1/16W
R219
NC
DIM
TO-252
VCC5V+
R204
10K 1/16W
VCC5V
GND Q201
PMBS3904
32
1
H1
H8D3.5-2LX
1 2 3
4
5
6 7 8
9
1 2 3
4
5
6 7 8
9
onBACKLITE 6
VCC3.3
+
C215
47uF/16V
CN201
CONN
2
4
6
8
10
12
1
3
5
7
9
11
VAA3 4
VCC12V
GND
C203
0.1uF
R201 4.7K 1/16W
VCC12V
C219
0.1uF
VLCD_12V
VAA3
R216 NC
4.7K 1/16W
VCC3.3 4
R217 51K 1/16W
VCC5V
FB201
600
VCC1.8 4
U201
AZ1117D-1.8
3 2
1
VI VO
GND
VCC1.8
GND
+
C204
220uF/25V
VCC12V
+ C209
47uF/16V
C212
0.1uF
VCPU
C207
0.1uF
VCPU 6
C205
0.1uF
onPanel_5V/3.3V6
C216
0.1uF

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R328
4.7K 1/16W
D319
MLL5232B 5.6V
VSI
C309 0.047uF
CN301
DB15
1
6
2
7
3
8
4
9
5
11
12
13
14
15 10
C312
220pF R318
4. 7K 1/16W
VGA_CON
ST_DET1 6
RIN 4
R319
22K 1/16W
R302 33 1/16W
VCC5V
R305 68 1/16W
R317
4.7K 1/16W
R310 1K 1/16W
VCC5V
C310 0.047uF
INPUT
A
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37Wednesday, June 01, 2005
Title
Size Document Number Rev
Date: Sheet of
D303
BAV99
3
1 2
FB301 0 1/16W
C305 0.047uF
R325
75 1/16W
R326
75 1/16W
R316 22 1/16W
D317
MLL5232B 5.6V
R308
10K 1/16W
DDC_CLK6
D322
MLL5232B 5.6V
TXD 6
R306 68 1/16W
C306 0.047uF
R327
75 1/16W
C301
NC
GNDB 4
R303 33 1/16W
GNDG 4
D321
MLL5232B 5.6V
GIN 4
R329
10K 1/16W
RXD 6
VSYNC 4
FB303 0 1/16W
D301
BAV99
3
1 2
C304 0.047uF
VCC5V
R314
2.2K 1/16W
R311 1K 1/16W
R304 470 1/16W
R301 33 1/16W
R315 22 1/16W
PC5V C307 0.001uF
D304
BAV70
3
1 2
FB302 0 1/16W
C311
68pF
BIN 4
R309 100 1/16W
FB304 200 OHM
Q301
PMBS3904
CE
B
D318
MLL5232B 5.6V
modify ddc_wp circuit
C303
NC
CLK_DDC
D320
MLL5232B 5.6V R313
2.2K 1/16W
C316
0.1uF
D323
MLL5232B 5.6V
GNDR 4
SOG 4
DAT_DDC
U301
AT24C02N-10SC
1
2
3
45
6
7
8A0
A1
A2
GNDSDA
SCL
WP
VCC
C313
0.22uF
DDC_WP6
PC5V
C315
0.1uF
C317
0.1uF
C314
0.1uF/16V
R312 100 1/16W
R307 68 1/16W
C302
NC
HSYNC 4
C308 0.047uF
HSI
D302
BAV99
3
1 2
DDC_DAT6