HP L1902 User manual

HP L1902 Service Manual
Page 1 of 69
-
SERVICE MANUAL
19” LCD Monitor
L1902
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.
MANUFACTURE DATA ：Feb-29-2004

HP L1902 Service Manual
Page 2 of 69
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 -------------------------------------------------------------------------06
3.3 Adjusting The Picture ----------------------------------------------------------------07
4. Input/Output Specification ---------------- --------------------------------------------------- 08
4.1 Input Signal Connector ------------------------------------------------------------------08
4.1.1 Analog D-SUB Connector ----------------------------------------------------------08
4.2 Factory Preset Display Modes --------------------------------------------------------09
4.3 Power Supply Requirements ----------------------------------------------------------09
4.3.1 Input/Output Requirements ------------------------------------------------------09
4.3.2 Inverter Max Brightness -----------------------------------------------------------10
4.3.3 Inverter Min Brightness ------------------------------------------------------------10
5.Panel Specification (LG E03/AU EN04) ------------------------------------------------11
5.1 General Feature -------------------------------------------------------------------------11
5.2 Optical Characteristics ---------------------------------------------------------------12
6. Block Diagram -----------------------------------------------------------------------------------14
6.1 Monitor Exploded View ----------------------------------------------------------------14
6.2 Software Flow Chart ---------------------------------------------------------------------15

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6.3 Electrical Block Diagram ----------------------------------------------------------------16
6.3.1 Scalar Board ----------------------------------------------------------------------16
6.3.2 Inverter/Power Board -----------------------------------------------------------17
7. Schematic -----------------------------------------------------------------------------------------19
7.1 Scalar Board ----------------------------------------------------------------------------19
7.2 Inverter/Power Board --------------------------------------------------------------25
7.3 Key Pad Board -------------------------------------------------------------------------26
8. PCB Layout --------------------------------------------------------------------------------------27
8.1 Main Board -----------------------------------------------------------------------------27
8.2 Inverter/Power Board ----------------------------------------------------------------30
8.3 Keypad Board -------------------------------------------------------------------------25
9. Maintainability -----------------------------------------------------------------------------------30
9.1 Equipments and Tools Requirements ---------------------------------------------30
9.2 Trouble Shooting -----------------------------------------------------------------------31
9.2.1 Main Board ------------------------------------------------------------------31
9.2.2 Power/Inverter Board -------------------------------------------------------33
9.2.3 Key Pad Board -----------------------------------------------------------------35
10. White-Balance, Luminance Adjustment ----------------------------------------------- 36
11. EDID Content -----------------------------------------------------------------------------------37
12. BOM List ----------------------------------------------------------------------------------38～69
12.1 T980KGLHKHHPN ------------------------------------------------------38～53
12.2 T980KAXDKHHPN ------------------------------------------------------53～69

HP L1902 Service Manual
Page 4 of 69
Revision List
Revision Date Change Description
A00 May-31-04 Add Panel spec and BOM of AU Panel model

HP L1902 Service Manual
Page 5 of 69
1.PRODUCT FEATURE
48.18cm(19”) a-si TFT Active matrix LCD panel, 0.294mm dot pitch
Scalar chipset : gmZAN3SL ( or MST9111B)
Microprocessor controlled scan technology
16 factory presets, 20 new modes
Vertical refresh rate 50Hz to 75Hz; Horizontal frequency 30kHz to 83kHz
Resolutions: 640 x 480 up to 1280 x 1024
Power Internal AC100V-240V (+/-10%)
Tilt -5° to 20°
CE mark
TCO 03 mark
VESA DPMS compliant
VESA DDC2B compliant and DDC/CI interface.
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.
The power board will provide AC to DC Inverter voltage to drive the backlight of panel and the main
board chips each voltage.
Power Board
Flat Panel and
CCFL backlight
Main Board
Keyboard
RS232 Connector
For white balance
adjustment in
factory mode
HOST Computer
CCFT Drive.
AC-IN
100V-240V Video signal, DDC
Monitor Block Diagram

HP L1902 Service Manual
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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 panel of the monitor. 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:
When pressed, the monitor enters the off mode, and the LED turns blank. Press again to restore
normal status.
-(Down/ Auto) and + (Up) Button:
The -/+ Button is browse OSD key. Press a select into adjustment.
The Auto Adjust Key is used to automatically set the H Position, V Position, Clock and Phase.
- Select Key:
Select key is into OSD sub-menu hot key when OSD turn on.
-Power Indicator:
Green — Power On mode.
Amber — Power Saving mode.
Blank — Power Off Mode.
CONTROL BUTTONS
Select Button Down / Auto Button Up Button On/Off Switch

HP L1902 Service Manual
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3.3 Adjust The Picture
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.
3. 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.
4. Language Shows the language of the OSD window.
5.
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
6. OSD Control OSD (on Screen Display) settings: adjusts the H/V position,
timeout, On Screen Display window.
7. Factory Reset Resets the display to original factory settings for color, brightness,
phase, and clock.
8. Exit Exit the current OSD window.

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4. Input/Output Specification
4.1 Input Signal Connector
4.1.1 Analog D-SUB Connector
PIN MNEMONIC SIGNAL
1 RV Red Video
2 GV Green Video
3 BV Blue Video
4 NC
None
5 GND Ground (DDC Return)
6 RG Red GND
7 GG Green GND
8 BG Blue GND
9 +5 V +5 V (from PC)
10 SG Sync Ground
11 NC None
12 SDA DDC Data
13 HS Horizontal Sync
14 VS Vertical Sync
15 SCL DDC Clock
VGA connector layout
PIN 1 PIN 5
PIN 11

HP L1902 Service Manual
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4.2 Factory Preset Display Modes
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
4.3.1 Input / Output Requirements
PARAMETER RANGE
AC Input Voltage 90 to 264V
AC Input Frequency 47 to 63 Hz
AC Input Current 1.5A MAX
Inrush Current 60A MAX AT 264VAC COLD START
Leakage Current 3.5 mA MAX and less than 0.25mA at 100Vac
Output voltage / current 12V / 3.5A , 5V / 1.5A
Output power 45W Max
Efficiency >80%
Saving Mode <2W Max @5V/0.1A , 12V/0A

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4.3.2 Inverter Max Brightness
(Vadj:4.5v), LOAD=100KΩX4 (ROOM TEMPERATURE 25℃±4℃)
ITEM SYMBOL MIN. TYP. MAX. UNIT REMARK
Input voltage Vin 10.8 12 13.2 V
Input current Iin 1700 1870 mA FOR 4LOAD
Output Current Iout 6 6.5 7 mA FOR 1 LOAD
Frequency F 40 50 60 KHZ FOR 1 LOAD
H.V open Vopen 1350 1550 1750 Vrms NO LOAD
H.V Load Vload 550 650 750 Vrms RL=100KΩ
Protect delay time PDT 0.4 1 4 Sec
4.3.3 Inverter Min Brightness
(Vadj:0.0v), LOAD=100KΩX4 (ROOM TEMPERATURE 25℃±4℃)
ITEM SYMBOL MIN. TYP. MAX. UNIT REMARK
input voltage Vin 10.8 12 13.2 V
input current Iin -- 500 550 mA FOR 4 LOAD
Output Current Iout 3 3.5 4 mA FOR 1 LOAD
Frequency F 40 50 60 KHZ FOR 1 LOAD
H.V open Vopen 1350 1550 1750 Vrms NO LOAD
H.V Load Vload 250 350 450 Vrms RL=100KΩ

HP L1902 Service Manual
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5. PANEL SPECIFICATION
5.1 General Feature
LG LM190E03
Active Screen Size 19.0 inches(481.84mm) diagonal
Outline Dimension 404.2(H) ╳330.0(V) ╳20.0(D) mm(Typ.)
Pixel Pitch 0.098*RGB(H) ╳0.294(V)mm
Pixel Format 1280 horizontal By 1024 vertical Pixels. RGB stripe arrangement
Interface LVDS 2Port
Color Depth 16.2M colors
Luminance, White 250 cd/m²(Center 1 Point ,Typ)
Viewing Angle(CR>10) Viewing Angle Free[R/L 140(Typ.), U/D 140(Typ.)]
Power Consumption Total 20.82Watt(Typ.),(2.22Watt @VLCD, 18.60 @ [Lamp=6.5mA])
Weight 2500g(Typ.)
Display Operating Mode Transmissive mode, normally White
Surface treatments Hard coating(3H), Anti-glare treatment of the front polarizer
AU M190EN04
ITEM Unit Specifications
Screen Diagonal [mm] 480(19.0")
Active Area [mm] 376.32(H) ╳301.056(V)
Pixels H╳V 1280(╳3) ╳1024
Pixel Pitch [mm] 0.294(per one triad) ╳0.294
Pixel Arrangement R.G.B Vertical Stripe
Display Mode Normally White
White Luminance [cd/m²] 250(center, Typ)@7mA
Contrast Ratio 450:1(Typ.)
Optical Response Time [msec] 16ms(Typ)
Color Saturation 72% NTSC
Nominal input Voltage VDD [Volt] +5V
Power Consumption
(VDD line + CCFL line) [Watt] 28W(Typ.)(w/o inverter, All back pattern)
Weight [Grams] 2700(TBD)
Physical Size [mm] 396(H) ╳324(V) ╳18(D)(Typ)
Electrical interface R.G.B data, Clock
Support Color 262k colors(RGB 6-bit data)
Surface Treatment Anti-Glare,Hard Coating,3H
Temperature Range
Operating
Storage(Shipping)
[℃]
[℃]
0 to +50
-20 to +60
TCO compliance Meet TCO'03 regulation

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5.2 Optical Characteristics
LG LM190E03
Ta= 25°C, VLCD=5.0V, fV=60Hz ,Dclk=54MHz
Values
Parameter Symbol
Min Typ Max Units Notes
Contrast Ratio CR 300 500 - 1
Surface Luminance, white LWH 200 250 - cd/m² 2
Luminance Variation δWHITE 5P 1.3 3
Rise Time TrR - 4 6 ms 4
Response time Decay Time TrD - 12 24 ms 4
Rx 0.639
RED Ry 0.342
Gx 0.297
GREEN Gy 0.615
Bx 0.146
BLUE By 0.068
Wx 0.313
Color
Coordinates
WHITE Wy
Typ
-0.03
0.329
Typ
+0.03
Viewing Angle(CR>5)
x axis, right(=0°) r 70 80 degree 5
x axis, right(=180°) l 70 80
y axis, up(=90°) u 70 80
y axis, down(=270°) d 70 80
Viewing Angle(CR>10)
x axis, right(=0°) r 60 70 degree 5
x axis, right(=180°) l 60 70
y axis, up(=90°) u 60 70
y axis, down(=270°) d 60 70
Gray Scale 2.2 6

HP L1902 Service Manual
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AU M190EN04
ITEM Unit Condition Min. Typ. Max.
Horizontal (Right)
CR=10
(Left)
65
65
70
70 –
Viewing Angle [degree] Vertical (Up)
CR=10
(Down)
65
60
70
65 –
Contrast ratio Normal Direction 250 450 –
Raising Time – 4 5
Falling Time – 12 20
Response Time
(Note 1) [msec]
Rising + Failing – 16 25
Red x 0.604 0.634 0.664
Red y 0.324 0.354 0.384
Green X 0.27 0.3 0.33
Green y 0.585 0.615 0.645
Blue x 0.108 0.138 0.168
Color/Chromaticity
Coordinates(CIE)
Blue y 0.047 0.077 0.107
White x 0.28 0.31 0.34Color Coordinates
(CIE)White White y 0.3 0.33 0.36
White Luminance@
CCFL 7mA(Center) [cd/m²] 200 250 –
Luminance Uniformity
(Note 2) [%] 70 75 –
Closs talk (in 75Hz)
(Note 3) [%] – – 1.5

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6. Block Diagram
6.1 Monitor Exploded View

HP L1902 Service Manual
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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

HP L1902 Service Manual
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6.3.2 Inverter / Power Board Block Diagram
Inverter Block Diagram

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Power Block Diagram

HP L1902 Service Manual
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7.SCHEMATIC
7.1 SCALAR BOARD
7.1.1 For LG Panel +gmZAN3/SL Project
PPWR
KEY_RIGHT
715L1241-C C
MAIN BOARD BLOCK
27 星期一 , 十二月 22, 2003
Title
Size Document Number Rev
Date: Sheet of
+12V
+5V
CON503
CON
LVDSO[0-9]
LVDSE[0-9]
VLCD
GND
VLCD
INPUT INTERFACE
R
G
HSI
VSI
B
VGA_CON DB-RXD
DB-TXD
DAT_DDC
CLK_DDC
VSS
EEPROM
M24LC02A
SDA
SCL
+5V VSS
EDID-WP
KEY_ONOFF
GMZAN3SLSCALER
RVDD_3.3
RESET_OUT
DDC-SDA
DDC-SCL
WRn RDn
AVDD33_ADC_3.3
VDD_ADC_1.8V
VDD_RPLL_1.8V
CVDD_1.8V
BLUE+
RED+
GREEN+
HSYNC
VSYNC
TCLK
AVDD_RPLL_3.3
XTAL
PPWR
PBIAS
VSS
AVDD_LV_3.3
VDD_OUT_LV_3.3
HDATA0 HDATA1 HDATA2 HDATA3
HFS GPIO11 GPIO12
GPIO13
HCLK/ALE
MEM_REG
LVDSO[0-9]
LVDSE[0-9]
GPIO6
GPIO7
GPIO0
REGULATOR -AIC1.8V
+3.3V+5V
+5V
MICRO CONTROLLER
W78E65P
P2.2
P0.7
RXD
TXD
P0.6
P3.4 P3.5
VCC P0.5
/WP
RST
P2.0
XTAL1
XTAL2
P0.4 P0.3 P0.2 P0.0 P0.1
VSS
P2.6
ALE
P3.7/RD#
P3.6/WR#
P2.3 P2.4 P2.5
P1.7/CEX4
M24AC16
SDA
SCL
+5V
WP
KEY_LEFT
LED_G
AC-IN
GND
BRIGHTNESS
+5V
GND
LED_O
POWER BOARD
+5V
AC-IN
+12V
GND
GND
GND
REGULATOR -AIC3.3V
+3.3V+5V
+5V
+5V
CRYSTAL
14.318MHZ
X1
X2
PBIAS
KEY_MENU
+5.0V
GND
GND
L105
120 OHM
C130
0.1uF/16V
C144
0.1uF/16V
R133
4.7K 1/16W
C145
0.1uF/16V
A15 => HCLK(ZAN3SL)
LVDS_O4
SP6
R141 100 1/16W
KEY_LEFT3 KEY_LEFT
C123
0.1uF/16V
C138
0.1uF/16V
GND
L106
120 OHM
GND
LVDS_O[0..9] 4
Philips P89C51RD2
Winbond W77E65P-24/40
SyncMOS SM2965
83.4mA
LVDS_O0
R139 100 1/16W
R124 NC
NVRAM_SDA
R140 NC
R149 4.7K 1/16W
1.8V_DVDD
+5V
UDART_DI
R144 10K
+3.3V_VDD
RDn
U102
GMZAN3/SL
PQFP-100
77
78
74
75
70
71
87
88
62
63
39
40
1
42
43
44
45
41
35
90
46
2
82
84
80
76
72
33 51
89
47 31 67
30
29
95
96
32 48 64 68 100
81
16
14
13
12
11
10
7
6
5
28
8
9
93
85
69
94 92
66
61
60
59
58
73
55
54
53
52
50
49
57
56
65
34
38
91
83
86
37
36
17
18
19
20
21
22
23
24
25
26
4
3
15
27
99
79
97
98
RED+
RED-
GREEN+
GREEN-
BLUE+
BLUE-
XTAL
TCLK
STI_TM1
STI_TM2
GPIO12/AD6
GPIO11/AD5
AVDD_LV_3.3
HDATA3/AD3
HDATA2/AD2
HDATA1/AD1
HDATA0/AD0
HFS/AD4
HCLK/ALE
RESETn
GPIO10/IRQn
VCO_LV
VDD_ADC_1.8
VDD_RPLL_1.8
AGND_ADC
AGND_ADC
AGND_ADC
RVDD_3.3 RVDD_3.3
AVDD_RPLL_3.3
CVDD_1.8 CVDD_1.8 CVDD_1.8
PPWR
PBIAS
HSYNC
VSYNC
CRVSS CRVSS CRVSS CRVSS CRVSS
GND_ADC
VDD_OUT_LV_3.3
CH0N_LV_E/G1
CH0P_LV_E/G0
CH1N_LV_E/R7
CH1P_LV_E/R6
CH2N_LV_E/R5
CLKP_LV_E/R2
CH3N_LV_E/R1
CH3P_LV_E/R0
VDD_OUT_LV_3.3
CLKN_LV_E/R3
CH2P_LV_E/R4
CRVSS
VBUFS_RPLL
AVDD_ADC_3.3
RVDD_3.3 CVDD_1.8
NC
NC
GPIO8/B6
GPIO7/B4
GPIO6/B7
SOG_MCSS
GPIO3/DVS
GPIO2/DHS
GPIO1/PWM1
GPIO0/PWM0
GPIO9/B5
NC
GPIO5/DCLK
GPIO4/DEN
CVDD_1.8
MEM_REG
GPIO13/AD7
RESET_OUT
VSS_RPLL
AVSS_RPLL
RDn
WRn
CH3P_LV_O/G2
CH3N_LV_O/G3
CLKP_LV_O/G4
CLKN_LV_O/G5
CH2P_LV_O/G6
CH2N_LV_O/G7
CH1P_LV_O/B0
CH1N_LV_O/B1
CH0P_LV_O/B2
CH0N_LV_O/B3
VDD_OUT_LV_3.3
AVSS_LV
VSS_OUT_LV
VSS_OUT_LV
CVDD_1.8
AVDD_ADC_3.3
DDC_SCL
DDC_SDA
C124
0.1uF/16V
C125
0.1uF/16V
SP7
C177 NC
+
C140
22uF/16V
PBIAS 5
6.4mA
RED+1
C131
0.1uF/16V
+1.8V_VDD
LVDS_O5
LVDS_O7
LVDS_E9
R174
100 1/16W
C137
0.1uF/16V
C148
10pF
KEY_UP => A9/P2.1 OF MCU
R128
4.7K 1/16W
R175
4.7K 1/16W
3.3V_DVDD
C149
0.1uF/16V
C141
0.1uF/16V
1.8V_DVDD
KEY_MENU3
C128
0.1uF/16V
+
C122
22uF/16V
SP2
C139
0.1uF/16V
SP11
8.1mA
TCLK
R148 4.7K 1/16W
1.8V_AVDD 3.3V_LAVDD
LVDS_O6
KEY_ONOFF
C126
0.1uF/16V
KEY_RIGHT => A10/P2.2 OF MCU
CN102
1
2
3
4
SP8
TXD1
LVDS_E3
TCLK FOR ZAN3SL
139mA
3.3V_PVDD
PPWR 5
LVDS_O8
DDC_SDA
C150
0.1uF/16V
GND
GND
GREEN-1
KEY_DOWN => A11/P2.3 OF MCU
C147
10pF
GND
L102
120 OHM
GND
Close to respective power Pins
42.2mA
VGA_CAB 1
LVDS_E7
C142
0.1uF/16V
LVDS_E2
3.3V_DVDD
+5V
KEY_ONOFF
R122
4.7K 1/16W
KEY_LEFT => A12/P2.4 OF MCU
KEY_MENU
UDART_DO
SP3
R147 4.7K 1/16W
Close to respective power Pins
12/22 Add C107 PCB
LOCATION 10UF
GND
RXD1
LVDS_O1
GND
DDC_SDA1
UDART_DO
LVDS_E6
VSYNC1
RDn
NVRAM_SCL
U101
W78E65P
2
3
4
5
6
7
8
9
10
11
13
14
15
16
17
18
19
20
21
22
24
25
26
27
28
29
30
31
32
33
35
36
37
38
39
40
41
42
43
44
1
12
23
34
P1.0/T2
P1.1/T2EX
P1.2/ECI
P1.3/CEX0
P1.4/CEX1
P1.5/CEX2
P1.6/CEX3/WAIT#
P1.7/CEX4/A17/W
RST
P3.0/RXD
P3.1/TXD
P3.2/INT0#
P3.3/INT1#
P3.4/T0
P3.5/T1
P3.6/WR#
P3.7/RD#/A16
XTAL2
XTAL1
VSS
A8/P2.0
A9/P2.1
A10/P2.2
A11/P2.3
A12/P2.4
A13/P2.5
A14/P2.6
A15/P2.7
PSEN#
ALE/PROG#
EA#/VPP
AD7/P0.7
AD6/P0.6
AD5/P0.5
AD4/P0.4
AD3/P0.3
AD2/P0.2
AD1/P0.1
AD0/P0.0
VCC
NC
NC
NC
NC
CHANGE NVRAM_SCL
P3.5/T1 => P1.4/CEX1
GND
X101
14.318MHz
R145
15K 1/16W
LVDS_O[0..9]
L103
120 OHM
PLCC44 - SOCKET-87L202-44
12/22
R137 100 1/16W
A15
NVRAM_SDA
BLUE+1
LED_G 3
KEY_LEFT
X102
NC
+5V
1.8V_AVDD
HSYNC1
CHANGE NVRAM_SDA
P3.4/T0 => P1.3/CEX0
A15
GND
R124-RESET
FUNCTION
GND
+5V
LVDS_E0
EDID-WP1
LVDS_E4
DDC_SCL1
C132
0.1uF/16V
KEY_ON/OFF => A13/P2.5 OF MCU
GND
3.3V_PVDD
WRn
KEY_MENU
3.3V_DVDD
SP1
Close to respective power Pins
C134
0.1uF/16V
R173
NC
12/22 BOM/LAYOUT Add
R174,R175
LVDS_E1
R135
4.7K 1/16W
GND
3.3V_LAVDD
LED_O 3
KEY_RIGHT
R136 NC
+
C136
22uF/16V
GND
3.3V_PVDD
715L1241-C C
ZAN3SL & Micro I/F
C
47
星期一 , 十二月 22, 2003
Title
Size Document Number Rev
Date: Sheet of
+5V
NVRAM_SCL
G-PROBE
LVDS_O9
Hardwave ISP function
AUDIO_STDBY3
C127
0.1uF/16V
12/22 BOM R135 NC CHANGE TO 4.7K OHM
GREEN+1
A14
L104
120 OHM
GND
GND
C176 NC
+ C143
10uF
C135
0.1uF/16V
GND
+5V
KEY_ONOFF3
LVDS_E5
L101
120 OHM
12/22 BOM R145 10K CHANGE TO 15K OHM
A14
BRIGHTNESS 5
PPWR
R121 22 1/16W
R143 10K
OPTIONAL
FOR
DEBUGGING
PURPOSES
ONLY
GND
GND
R138 NC
R146 0 1/16W
Refer BOOTSTRAP OPTIONS
UDART_DI
IRQn
R125
100 1/16W
C133
0.1uF/16V
IC104
M24C16-MN6T
1
2
3
4 5
6
7
8
A0
A1
A2
VSS SI
SCK
WP
VCC
SP10
A15
3.3V_AVDD
+5V BLUE-1
PBIAS
KEY_RIGHT
R127
4.7K 1/16W
/WP
WINBOND W78E65P-40-56L1125-137-X
GND
DDC_SCL
LVDS_O2
RESET
+5V
GND
AUDIO_STDBY
ALE
/WP
KEY_RIGHT3
R142 0 1/16W
12/22 BOM R137 NC CHANGE TO 100 OHM
LVDS_E[0..9] 4
GND
R129
4.7K 1/16W
R123
4.7K 1/16W
58.27mA
+5V
+5V
ALE
VGA_CAB
R130
NC
AUDIO_STDBY
LVDS_E[0..9]
LVDS_E8
R134
4.7K 1/16W
+
C129
22uF/16V
A14 => MEM_REG(ZAN3SL)
+5V
3.3V_PVDD
WRn
RP103
4.7K 1/16W
1
2
3
4
8
7
6
5
+ C107
NC
3.3V_AVDD
C146
0.1uF/16V
RED-1
LVDS_O3
A14
GND
R126
100 1/16W

HP L1902 Service Manual
Page 20 of 69
CN301
CONN
1
2
3
4
5
6
7
8
9
10
11
12
13
14
D110
BAT54C-GS08
3
1 2
GND
C109
NC
715L1241-C C
Input Connectors
B
37
星期一 , 十二月 22, 2003
Title
Size Document Number Rev
Date: Sheet of
RED- 2
12/22 BOM/LAYOUT Add R176 EDIP-WP
FUNCTION
GND
PC5V
C102
56pF
C115
0.1uF/16V
GND
gndR
TXD 2
C119
0.1uF/16V
R
R176
15K 1/16W
D104
MLL5232B 5.6V
GND
GND
B
DB-RXD
C117
33pF
GND
G
gndB
FB101 0 1/16W
12/22 BOM R117,R118 10K CHANGE TO 4.7K OHM
FB104 0 1/16W
GND
R115
2.2K 1/16W
R117
4.7K 1/16W
C116
0.1uF/16V
gndG
D102
MLL5232B 5.6V
HSI
D108
MLL5232B 5.6V
DAT_DDC
GREEN+ 2
B
C120
220pF
R119 100 1/16W
R112 47 1/16W
EDID-WP
VSI
C112 0.047uF
D101
BAV99
3
1 2
gndG
R105 100 1/16W
GND
R114 47 1/16W
C106 0.047uF
R
BLUE- 2
G
D109
MLL5232B 5.6V
GND
C108 0.047uF
C118
220pF
R118
4.7K 1/16W
C111
NC
GREEN- 2
PC5V
CLK_DDC
GND
GND
C113 0.047uF
DB-TXD
VSI
R113 0 1/16W
VGA_CAB 2
GND
VSYNC 2
BLUE+ 2
D103
MLL5232B 5.6V
D107
MLL5232B 5.6V
GND
R107
75 1/16W
C110
NC
FB103 0 1/16W
R111 100 1/16W
DAT_DDC
C104 0.047uF
D105
BAV99
3
1 2
DDC_SDA 2
PC5V
DB-TXD
D112
MLL5232B 5.6V
FB102 0 1/16W
RED+ 2
CLK_DDC
R102
47 1/16W
C103
56pF
R103
47 1/16W
IC103
M24C02WMN6
4
8 1
2
3
7
6
5GND
VCC A0
A1
A2
WP
SCL
SDA
C121
220pF
R116
2.2K 1/16W
GND
D111
MLL5232B 5.6V
R101 100 1/16W
gndR
GND
HSI
R120 100 1/16W
DDC_SCL 2
GND
R106
75 1/16W
HSYNC 2
VGA_CON
GND
C114 0.047uF
gndB
+3.3V_VDD
R104 100 1/16W
+5V
RXD 2
VGA_CON
DB-RXD
R108
75 1/16W
D106
BAV99
3
1 2
R109 100 1/16W
R110 100 1/16W
LVDS_O0
RXE2+
LVDS_E9
RXO1+
LVDS_E5
LVDS_O3
RXEC+
RXOC-
LVDS_O[0..9]2
RXE1-
LVDS_E7
GND
LVDS_O2
RXEC-
LVDS_O6
LVDS_E2
LVDS_O7
LVDS_E8
RXO0+
CN503
CON24A
1 2
3 4
5 6
7 8
9 10
11 12
13 14
15 16
17 18
19 20
21 22
23 24
LVDS_E4
LVDS_O1
GND
RXO2+
+
C158
2.2uF
RXE0-
RXOC+
RXE3-
RXE1+
LVDS_O5
LVDS_E0
LVDS_O7
LVDS_E8
LVDS_E5
LVDS_E2
LVDS_E3
LVDS_O6
R172
330 1/8W
LVDS_O5
11/12 タ NC
RXO3+
LVDS_E7
RXO3-
RXE2-
RXO2-
LVDS_O9
LVDS_O9
LVDS_E0
RXE3+
LVDS_O3
+VLCD
GND
RXO0-
LVDS_O8
LVDS_O4
11/12 タ LOCATION 跑
LVDS_E9
LVDS_O4
715L1241-C C
PANEL INTERFACE
A
67
星期一 , 十二月 22, 2003
Title
Size Document Number Rev
Date: Sheet of
LVDS_O0
LVDS_E6
11/12 タ PAGE 47->2.2uf
LVDS_E3
C159
0.1uF/16V
LVDS_E6
RXE0+
LVDS_E1
15.4mA
RXO1-
LVDS_O1
LVDS_E1
LVDS_E[0..9]2
LVDS_O8
C160
NC
LVDS_O2
LVDS_E4