HP L1506 User manual

15" LCD Color Monitor HP L1506
1
Service
Service
Service
HorizontalFrequency
30-83kHz
TABLE OF CONTENTS
Description Page Description Page
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.
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
6. Block Diagram……...................…………................12
6.1. Monitor Exploded View…………………....….......12
6.2 Software Flow Chart……………..……………….13
6.3. Electrical Block Diagram……………..….......15
7. Schematic……………......................................17
7.1 Main Board....……….......................................17
7.2 Power Board.….……....................................21
8.PCB Layout..………….......................................23
8.1. Main Board………........................................23
8.2. Power Board….......................................25
8.3. Key Board………............….......................28
9. Maintainability……….......................................29
9.1. Equipments and Tools Requirement..............29
9.2. Trouble Shooting………..............................30
10. White-Balance, Luminance adjustment...36
11. BOM List….....................................................37
12.Different Parts List………………………...…………..48
CAUTION: USE A SEPARATE ISOLATION TRANSFOMER FOR THIS UNIT WHEN SERVICING

15" LCD Color Monitor HP L1506
2
Revision List
Version Date Revision History TPV Model Name
T57VMSDPABHPNNE
T57VMSDKABHANNE
T57VMSDDABHPNNE
T57VMSDTABHPNNE
T57VMSDCABHPNNE
A00 Nov.-17-2008 first release
T57VMSDDABHANNE

15" LCD Color Monitor HP L1506
3
1. Monitor Specification

15" LCD Color Monitor HP L1506
4
2. LCD Monitor Description
The LCD Monitor will contain main board, power board, key board and an audio board which house the flat panel
controllogic,brightnesscontrollogicandDDC.
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 ada
p
ter and inverter
)
Flat Panel and
CCFL backlight
Main Board
Audio board
RS232 Connector
For white balance
adjustment in
factory mode
HOST Computer
CCFT Drive.
AC-IN
110V-240
Monitor Block Diagram
Key board

15" LCD Color Monitor HP L1506
5
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

15" LCD Color Monitor HP L1506
6
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.

15" LCD Color Monitor HP L1506
7
4. Input/Output Specification
4.1 Input Signal Connector
Pin Signal Pin Signal
1 Red Video 9 +5 V (from PC)
2 Green Video 10 Ground
3 Blue Video 11 Ground
4 Ground 12 DDC-serial Data
5 Detect Cable 13 Horizontal Sync
6 Red GND 14 Vertical Sync
7 Green GND 15 DDC-serial Clock
8 Blue GND
VGA connector layout
PIN 1 PIN 5
PIN 11

15" LCD Color Monitor HP L1506
8
4.2 Factory Preset Display Modes

15" LCD Color Monitor HP L1506
9
4.3 Power Supply Requirements
Parameter Range
AC Line Voltage range 100 to 240V
AC Line Frequency range 47 to 63 Hz
Peak surge Current < 55 A MAX AT 220VAC and cold starting
Leakage Current < 3.5 mA
Power Consumption ≤37W

15" LCD Color Monitor HP L1506
10
5. Panel Specification
5.1 General Feature

15" LCD Color Monitor HP L1506
11
5.2 Optical Characteristics

15" LCD Color Monitor HP L1506
12
6. Block Diagram
6.1 Monitor Exploded View

15" LCD Color Monitor HP L1506
13
6.2 Software Flow Chart
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
N
16
17
19
Y
N
18

15" LCD Color Monitor HP L1506
14
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?

15" LCD Color Monitor HP L1506
15
6.3 Electrical Block Diagram
6.3.1 Scalar Board
Scalar HUM16AWL
(Include ADC、OSD、MCU)
(U401)
EEPROM
(U402)
D-Sub Connector
(CN405)
EEPROM
(U404)
Hsync,
V
s
y
nc
R
G
B
RXD
TXD
DB15_SDA
DB15 SCL
EPR_SDA
EPR SCL
Panel Interface
(CN101)
DDC_SDA
DDC SCL

15" LCD Color Monitor HP L1506
16
6.3.2 Inverter / Power Board
AC filter Rectifier and
filter
Start circuit R904; R905,
Transform
Switching circuit
PWM control
IC&MOSFET
Rectifier and
filter D904;
D905
Feedback
circuit
IC902;IC903
12V/5V
Start circuit
On/off control
PWM control IC Push-pull
circuit
LC resonant Lamp
Dimming control Feedback circuit
To main board
12V
OVP circuit

15" LCD Color Monitor HPL1506
17
7. Schematic
7.1 Main Board
CN405
DB15
1
6
2
7
3
8
4
9
5
11
12
13
14
15
10
1716
HSI
ESD_5V
RED+
RED-
BLUE+
PC5V
BLUE-
GREEN+
SCL_VGA
Tit le
Size Document Number Rev
Date: Sheet of
INPUT
D
715G2433-A(L1706 down size)
B
14Thursday , December 07, 2006
SDA_VGA
D411
MLL5232B 5.6V
C433 0.047uF
R449
2.2K 1/10W
D409
MLL5232B 5.6V
R440
75 1/10W
C437 0.047uF
D407
BAV70
3
1 2
C443
220pF
R437 470 1/10W
R452
10K 1/10W
R436 56 1/10W
FB411 150 OHM
R454 47 1/10W
R451
10K 1/10W
FB410 150 OHM
R441 100 1/10W
C439 0.1uF
D405
BAV99
3
1 2
C435 0.001uF
R470
1K 1/10W
C442
33pF C444
0.1uF
FB412 150 OHM
C432 0.047uF
U404
24LC02B/SNG
A0 1
A1 2
A2 3
VSS 4 SDA
5SCL
6WP
7VCC
8
C441 0.1uF
R439
75 1/10W
D403
BAV99
3
1 2
R435 56 1/10W
C434 0.047uF
D408
MLL5232B 5.6V
R450
10K 1/10W
D410
MLL5232B 5.6V
R453 47 1/10W
R442 100 1/10W
C436 0.047uF
C438 0.047uF
D406
MLL5232B 5.6V
R443 100 1/10W
R434 56 1/10W
R438
75 1/10W
D404
BAV99
3
1 2
R444
10K 1/10W
R446 1K 1/10W
R447 1K 1/10W
R445 100 1/10W
C440 0.1uF
R448
2.2K 1/10W
FB409 150 OHM
D412
MLL5232B 5.6V
+5V 2,3
PC5V
ESD_5V
+5V
+5VA
PC5V
+5V
GIN 2
GNDB 2
GNDR 2
BIN 2
SOG 2
VSYNC 2
RIN 2
HSYNC 2
DDCA_SCL2
DDCA_SDA2
DET_VGA 2
GNDG 2
DDC_WP 2
GREEN+
GREEN-
RED-
BLUE-
D425
MLL5232B 5.6V
GREEN-
VGA_CON
VSI
11/27 D407 change to BAV70(93G-64-42-P)
RED+
BLUE+
11/21 CN405 #11 change to NC

15" LCD Color Monitor HPL1506
18
12/07:C403/C408/C418/C450/C453/C717--Change from 67G 2151007RT(105 10UF M 50V)
to 67G 315100 7K(105 10UF M 50V)
POWER
R497
NC(20K 1/10W)
R496
NC(10K 1/10W)
C454
NC(0.1uF )
+5V
+
C403
10uF/ 50V
R494 10 1/10W
R495 10 1/10W
R421 220 1/10W
WP
Tit le
Size D ocum ent Number Rev
Dat e: Sheet of
SCALER
D
715G2433-A(L1706 down size)
C
24Thursday , Dec ember 07, 2006
C425
0.1uF
Q403
PMBS3906
R425
10K 1/10W
R423 4.7K 1/10W
FB403
600 OHM
R405
22K 1/10W
R416
10K 1/10W
R422 4.7K 1/10W
C402
0.1uF
R428 100 1/10W
C427
0.1uF
R413
10K 1/10W
R411 100 1/10W
CN402
CONN
1
2
3
4
5
6
7
8
C414
0.1uF
U403
M24C04-WMN6TP
NC 1
E1 2
E2 3
VSS 4 SDA
5SCL
6WC
7VCC
8
D401
UDZS3.6B
C417
0.1uF
C416
0.1uF
R431
NC(10K 1/10W)
R477 1K 1/10W
R420 100 1/10W
C423 22pF
C409
0.1uF
R426
10K 1/10W
R484
NC (10K 1/10W)
C411
0.1uF
FB401
600 OHM
FB402
600 OHM
C407
0.1uF
Volume
R476 1K 1/10W
C428
0.1uF
C405
0.1uF
D413
UDZS3.6B
R487
10K 1/10W
FB406
600 OHM
C412
0.1uF
R403 390 1/10W
R485
NC (10K 1/10W)
R419 220 1/10W
R486
NC
Q401
PMBS3906
R408
10K 1/10W
C415
0.1uF
Q402
MMBT3904
R418 100 1/10W
R409
220 1/10W
C413
0.1uF
FB404
600 OHM
C422
0.1uF
R424
10K 1/10W
R427 100 1/10W
R475
3.9K 1/ 10W
R490
NC
C421 22pF
C410
0.1uF
C426
0.1uF
R474
3.9K 1/ 10W
D402
UDZS3.6B
U402
SST25VF010A-33-4C-SAE
CE# 1
SO 2
WP#
3
VSS
4SI 5
SCK 6
HOLD#
7VDD
8
R488 100 1/10W
R429 100 1/10W
R414
220 1/10W
R489
NC
R406
10K 1/10W
R430
NC (10K 1/10W)
FB405
600 OHM
C430
0.1uF
R415
10K 1/10W
C419
0.1uF
U401
TSUM16AL-LF PQFP-100
RIN0P
23
GIN0P
20
SOGIN0
21
BIN 0P
18
RIN0N
22
GIN0N
19
BIN 0N
17
HSYNC0
27
VSYNC0
28
REXT
15
REFP
26
REFM
25
SDO
37
SCK
39 SCZ
38
SDI
40
PWM2/GPIO_P24 47
PWM1/GPIO_P25 86
LVACKM 59
XI N
96
XO U T
97
LVA2P 60
LVA2M 61
LVA1P 62
LVA1M 63
LVA0P 64
LVA0M 65
LVB3P 67
LVB3M 68
LVBCKP 69
LVBCKM 70
LVB2P 71
LVB2M 72
LVB1P 73
LVB1M 74
LVB0P 77
LVB0M 78
LVACKP 58
LVA3M 55
LVA3P 54
GND
2
GND
5
AVDD _DVI 8
GND
11
GND
29
GND
33 AVDD _ADC 24
VDDP 56
MOD E [ 1]
53 MOD E [ 0]
52
VCTRL 81
VDDC 51
DDCA_SD A/RS232_TX
30
DDCA_SCL/rs232_RX
31
PWM0/GPIO_P26 93
AVDD _DVI 14
VDDP 75
GPIO_P15/PWM0 35
GPIO_P27/PWM1 48
GPIO_P12 85
GPIO_P00/SAR1 88
GPIO_P01/SAR2 89
GPIO_P02/SAR3 90
GPIO_P06 91
GPIO_P07 92
GPIO_P13 94
GPIO_P14 95
GPIO_P16/PWM2 99
GPIO_P11/I2C _MDA 43
GPIO_P10/I2C_MCL 44
RST
84
GPIO_P23 41
GPIO_P22 42
AVDD _MPLL 98
AVDD _PLL 16
VDDP 32 VDDP 49
VDDC 66 VDDC 82 VDDC 34
GND
50
GND
57
GND
76
GND
79
GND
83
BY PASS
80
RSTN 87
NC 36
NC 45
NC 46
C401
0.1uF
X401
14.318MHz
C404
0.1uF
C406
0.1uF
C429
0.1uF
R404
10K 1/10W
U703
NC(MAX810STRG)
GND 1
RESET 2
VCC
3
VCC1.83
VCC3.3
+5V
VPLL
AVDD
VMPLL
VPLL VDDC
VCC3.3
VCC3.3
VDDP
VCC1.8
VDDPVCC3.3
VPLL
+5V
AVDDVDDC
VCC3.3
VMPLLVCC3.3
VCC3.3
VCC3.3
VCC3.3
VCC3.3
AVDD_DVIVCC3.3
AVDD_DVI
PB[0..9] 4
+5V
GNDB1
RIN1
GNDG1
PA[0..9] 4
BIN1
SOG1
GNDR1
GIN1
DDCA_SCL1
DDCA_SDA1
VSYNC1
HSYNC1
on_BACKLIGHT 3
DDC_WP 1
DET_VGA 1
on_PANEL 3
adj_BACKLIGHT 3
WP
STANDBY
Option
KEY1
KEY2
POWER
LED_A
KEY1
KEY2 KEY_MENU
KEY _LEFT/ AUTO
11/27 R489/R490 Delete
LED_G
LED_A
PA0
PA1
PA2
PA3
PA4
LED_G
PA5
PA6
MUTE
PA7
R491 10 1/10W
R492 10 1/10W
PA8
PA9
PB3
PB5
PB0
PB2
PB4
PB9
PB1
PB6
PB7
PB8
PA[0..9]
PB[0..9]
+
C408
10uF/ 50V
XI N
XO U T
+
C418
10uF/ 50V
Re s e t C ir cu it
XO U T
XI N
KEY_RIGHT
+
C453
10uF/ 50V
+
C450
10uF/50V
R493
10K 1/10W

15" LCD Color Monitor HPL1506
19
+ C723
47uF/25V
12/07:C710/C712/C720/C723--Change from 67G405V470 3P(105 47uF M 16V)
to 67G 315470 4K(105 47UF M 25V)
GND
GND
TO-252
BL_ON
BL_ON
Tit l e
Size Document Number Rev
Date: Sheet of
POWER DC TO DC
D
715G2433-A(L1706 down size)
B
34Friday , December 08, 2006
Q704
AO3401
R727
10K 1/10W
R712 4.7K 1/10W
R710 NC
C714
0.1uF
R717
10K 1/10W
R723
51K 1/10W
R714
10K 1/10W
Q703
MMBT3904
R711
10K 1/10W
C701
NC
R722
NC
R707 4.7K 1/10W Q701
MMBT3904
C715
0.1uF
R716
NC(10K 1/10W)
C708
1uF/25V
C713
0.1uF
C709
0.1uF
R708
10K 1/10W
R715
NC(10K 1/10W)
R701
1K 1/10W
C718
0.1uF
R706 NC
C711
NC
R705 4.7K 1/10W
R725 4.7K 1/10W
+5V
Q706
MMBT3904
R721
0 1/10W
+
C710
47uF/25V
D704
SS14
C704
NC
+5V
VCC1.8 2
VLCD 4
VLCD
+5V +3V3
VCC1.8VCC3.3
+3V3 +3V3
+3V3+5V
+5V
VCC3.3
+5V
+5V
+5V
+5VA
on_PANEL2
on_BACKLIGHT 2
Adj_BACKLIGHT 2
only for 15" panel
11/22 C708 change to NC/R705 change to Bead(71G 59B121)
+5V
CN701
CONN
1
2
3
4
5
6
+5V
+
C703
NC(47uF/25V)
11/21 CN701 change type
U704 AP1117E18LA
VI
3VO 2
GND
1
U701
NC(AIC1185-33PETR)
GND(TAB)
2
VOUT 3 VIN
1
11/21 Delete:Q702/D701/D702/R702/R703/R704/C702
ADD:U704/C721/C722/C723
10/11 C715 change linking
+5V 1,2
TO-263
C721
0.1uF
C722
0.1uF
U702
AP1084K33LA
VIN
3
ADJ
1
VOUT 2
BL_ADJ
+
C717
10uF/ 50V
+
C712
47uF/ 25V
BL_ADJ

15" LCD Color Monitor HPL1506
20
LVB1PPB6
LVB2MPB5
LVB1MPB7
LVB3MPB1
LVB3PPB0
LVBCKPPB2
LVBCKMPB3
LVB2PPB4
LVB0PPB8
LVB0MPB9
PA6 LVA1P
PA5 LVA2M
PA0 LVA3P
PA4 LVA2P
PA3 LVACKM
PA1 LVA3M
PA7 LVA1M
PA[0..9]
PA9 LVA0M
PA8 LVA0P
PB[0..9]
Title
Size Document Number Rev
Date: Sheet of
PANEL INTERFACE
D
715G2433-A(L1706 down size)
A
44Thursday , December 07, 2006
CN101
CONN
2
4
6
8
10
12
14
16
18
20
22
24
1
3
5
7
9
11
13
15
17
19
21
23
VLCD
PB[0..9]2
PA[0..9]2
PA2 LVACKP RXO0-LVB0M
RXE1-LVA1M
LVACKM RXEC-
RXO3-LVB3M
RXE3-LVA3M
RXE2-LVA2M
RXO1-LVB1M
LVB2M RXO2-
RXOC+ LVBCKP
RXE0-LVA0M
LVBCKM RXOC-
RXO0+ LVB0P
RXE2+ LVA2P
C719
0.1uF
RXO1+ LVB1P
RXE0+ LVA0P
RXEC+ LVACKP
RXO2+ LVB2P
RXO3+ LVB3P
RXE1+ LVA1P
RXE3+ LVA3P
+
C720
47uF/25V