3.1 No Display, Power Indicator Is Off Or Blinking
3.2 No Display, Power Indicator Is Orange
3.3 No Display, Power Indicator Is Green
4.0 Video Connector Pin Assignment
5.0 Visual Inspection Criteria-LCD Panel
6.0 Spare Parts List
Page 3
7.0 Circuit Diagram
7.1 Power Distibution
7.2 VGA Input
7.3 ADC
7.4 Damping Network
7.5 Frame Rate Conversion
7.6 ASI 321
7.7 ASI 321 Power & EXT. OSD
7.8 Microcontroller
7.9 Panel Interface
8.0 Layout Diagram
(Vetech Film)
9.0 Parts List
Page 4
About This Manual
Audience
This service manual is primarily for system engineers, service engineers, dealers and
distributors. It carries the assumption that reader understands the basic operating concepts.
Purpose
This manual contains reference data for LP-10R01 LCD monitor. It gives information
regarding the operating principles of monitors, as well as technical service and maintenance
information.
1.0 Introduction
The LP-10R01 is a high performance 10.4” TFT LCD monitor. This micro-controlled monitor
is designed for continuous operation from 31.5 to 54 KHz and is capable of displaying up to
a resolution of 800 *600 in interface mode. The razor sharp flicker-free image, and the
delicate ergonomic design of this monitor elevate not only productivity but also the user’s
comfort.
1.1 Operation Specification
1.1.1 Operation Environment
Temperature
Operation:0 to 40℃
Storage:-20 to 60℃
Humidity (Relative)
Operation:10 to 80% non-condensing
Storage:10 to 90% non-condensing
Altitude
Operation:0~8000ft
Storage:0~40000ft
Page 5
1.1.2 Safety, Ergonomic, EMC Compliance
This monitor complies with the following safety, ergonomic, and EMC standard
UL: UL1950
TUV-GS: EN60950, ISO-9241-3
FCC : Part 15 Class B
CE : EN55022 CISPR22 Class B, EN55024(EMS), EN60950
1.1.3 Signal Input Requirement
Connector:
15 pin D-Sub high-density connector for video and sync signals. See chapter 4 for
pin assignment.
Video Signals:
Type: Red, Green, Blue channels analog input.
Level: 0.7Vp-p
Impedance:75 ohms.
Sync Signals:
Type: Separate Horizontal and Vertical Sync
Level: TTL Level
Polarity: Positive or negative
1.1.4 Power Input Requirement
Operating voltage range
100~240 V AC at 50/60 HZ
Power Consumption
Normal Operation: 18W
Stand by: 2.5W
Suspend mode: 2.5W
Off mode: 2.5W
Page 6
1.2 Functional Specification
The standard conditions for verifying the following specification are:
Temperature: 25±5℃
Warm-Up Time: 15 minutes minimum
AC line input: 100~240 V AC±10%, 50 / 60±3Hz
View Distance: 30cm
1.2.1 Display Quality
Display Size (H*Z): 211.2mm*158.4mm
Brightness: more than 120 cd/ m2
Contrast Ratio: 180:1
1.2.2 Color Quality
White Balance (Use full white pattern, set brightness to maximum)
At color temperature of white light CIE9300。K+27M..P.C.D
X=0.283±0.02, Y=0.298±0.02
At color temperature of white light CIE6500。K+27M..P.C.D
X=0.313±0.02, Y=0.329±0.02
1.3 Control And Adjustment
1.3.1 External User Controls
POWER Power On / Off MENU OSD Menu On / Off UP Increase the Value. DOWN Decrease the Value. ENTER Confirm the selection
Page 7
1.3.2 Controlled Functions From OSD Menu
Brightness: Press (+) key to increase brightness, (-) key to decrease brightness.
Contrast: Press (+) key to increase contrast, (-) key to decrease contrast.
Auto Adjust: Press (+) or (-) to adjust H-phase & H-position & V-position clock
automatically.
Phase: By varying this (+)(-) control the exact sampling time within the pixel can
be adjusted.
Clock: Adjust sampling clock of analog to digital converter until clock is equal to
pixel frequency of video input.
H-Position: Press (+) key to shift screen right, (-) key to shift screen left.
V-Position: Press (+) key to shift picture upward, (-) key to shift picture downward.
Sharpness: Press (+) key to increase sharpness, (-) key to decrease Sharpness.
Color Temp: Press (+) or (-) to choose three types of color temperature 9300,
6500 and user define.
Language: Press (+) or (-) to choose any one of the following language, English,
French, German, Italian and Spanish.
OSD: Adjust OSD frame location, timeout, transparency and preset OSD.
Dos-text / graphic: Select display quality (text / graphic) when this monitor be
used in DOS.
Recall: Recall the default value.
1.3.3 Special Functions
Automatic storing: After adjusting the screen parameters, the microprocessor
automatically stores the screen settings in user mode.
Entering factory mode: Press (+) and (-) at same moment before power on, the
monitor will operate in factory mode. In this mode. The value of brightness,
contrast, black-level, red, green, phase, OSD time, color save (color temperature)
are stored as default value. During recall function, these values will be recalled
again.
Page 8
2.0 Theory Of Operation
2.1 Main Board
This module consists of microprocessor, Cheetah chip, AD converter, memory, clock
generator, power conversion, 3.3 volt regulator and backlight controller.
2.1.1 A/D(AD9884A U8):
U8 is a triple 8 bit ADC with controllable amplifiers and clamps for the digitizing of
large bandwidth RGB signals. The clamp level, the gain and all of the other
settings are controlled via a serial interface, SDA (pin29), SCL(pin30).
Analog video inputs (Rin, Gin, Bin) are internal DC polarized. These input are AC
coupled by C46, C52, C54 three capacitors. ADC outputs R0~R7, G0~G7, B0~B7
are connected to scaling IC (ASI-320) via resistor array.
2.1.2 Scaling IC(ASI-320 U14):
U14 provides memory interface, ADC interface, microprocessor interface and flat
panel interface. U14 can work either with or without the external frame buffer. The
scaling IC is the data follow center between SDRAM(U12,U13), A/D converter(U8),
MCU(U17) and LVDS transmitter (U20). Because the LVDS panel is 6 bits/color
system, scaling IC also dither the 8 bits/color (from A/D) to 6bits/color system
2.1.3 Memory:
U12~U13(A43L0616V-7) for 1M*16 SDRAM frame buffer. 2.1.4 Power conversion:
U1: Main 5 volts output are generated by DC to DC conversion, from adapter we
get 12
volts DC input, convert 12 volts to 5 volts .
2.1.4 Regulator
3.3 volts regulator: U2, U4, U5, U6 are 3.3 volt regulators.
U2 output for LCD panel
U4 output for scaling IC(U14) and AD9884(U8).
U5 output for SDRAM(U12,U13)and LVDS transmitter (U20)
U5 output for analog power of AD9884 (U8)
2.1.5 LVDS transmitter (U20)
U20 transmits the LVTTL color data via LVDS interface.
2.1.6 MCU(U17)
Page 9
Dominate the OSD, preset mode, factory initial mode etc.
2.2 Keypad Board:
The key status input to Main Board for function adjustments ON OSD menu.
2.3 Inverter Board:
Inverter DC to high voltage AC for driving CCFL.
3.0 Troubleshooting Instruction
3.1 No Display, Power Indicator Is Off Or Blinking
3.1.1 Check AC/DC adaptor is proper installed with power code or DC jack.
3.1.2 Make sure having pressed power key.
3.2 No Display, Power Indicator Is Orange
3.2.1 Check the connector VGA1 for RGB signals input to Main board or not.
3.2.2 Change the Main Board
3.3 No Display, Power Indicator Is Green
3.3.1 Check the connector P7 for LVDS signals input to panel or not.
3.3.2 Check the LCD panel connector.
3.3.3 Check CON4 for power input of inverter.
3.3.4 Change the inverter board
3.3.5 Change the Main board
Page 10
4.0 Video Connector Pin Assignment
Pin Number Signal Pin Number Signal
1 Analog Red Input 9 NC
2 Analog Red Input 10 Sync Ground
3 Analog Red Input 11 Ground
4 Ground 12 SDA (DDC Data)
5 Digital Ground 13 H. Sync
6 Analog Red Ground 14 V. Sync
7 Analog Green Ground 15 SCL (DDC CLK)
8 Analog Blue Ground
Page 11
5.0 Visual Inspection Criteria-LCD Panel
Item Criteria for defect
Display function No Display Malfunction
Flickering Obviously visible at display area
Line defect Missing line, Vertical or horizontal
Display
Inspection
(operating)
External
Inspection
(non-operating)
Point Defect (Red,
Green, Blue, Dark)
Image retention
Non-uniformity Visible through 2% ND filter.
Important dimension
Scratch on the polarize
line shape
Dent or Bubble on the
polarize (in available
viewing area)
Foreign material on
polarizer
Bright defects:5 pcs maximum
Dark defects:5 pcs maximum
Total defects:10 pcs maximum
After displaying fixed pattern for 30 minutes,
the afterimage is visible after 10 seconds.
Not conform to SPEC regarding outline and
dimension between the mounting holes.
N=5 max (W≦ 0.1 or L≦ 10)
N=0 (W<0.1 or L<10)
N=5 max (D≦ 0.4)
N=0 (D≦ 0.1)
(W>1/4L)
N=4 max (0.1<D≦ 0.4)
(W≦ 1/4L)
N=4 max (0.03<W≦ 0.10 and 0.3<L≦ 2.1)
6.0 Spare Parts List
N=0 (W>0.1 or L>2.1)
Plastic frame Break
Cable The metal wire is exposed.
Parts No. Description Notes
1 Main Board 891-0100-057
2 Inverter 891-0250-003
3 Keypad 891-0010-010
4 Power Adaptor 560-1000-002
5 LCD Panel 501-1043-121
Page 12
7.1 Power Distibution
CON1
DC JACK2.5
+12V
+12V+12INV
VCC5
P.10
INV_ON/OFF
P.10
PANEL_ON/OFF
F1
QT3216KL100HC-3A
R251003
QT4532KL150HC-3A
C19
C17
+
104
470u/25V
QT3225KL060MC-1.5A
C27
104
INV_ON/OFF
PANEL_ON/OFF
L40
L4
L6
QT4532KL150HC-3A
C3
C1
+
104
470u/16V
GND_POWER
C20
104
C28
C26
+
104
470u/16V
L1
C4
C2
+
104
470u/16V
C15 103 R5915K
C18
Inverter
+
Power
470u/16V
DVCC5
MCU, ROM & Glue
Logics
QT3225KL060MC-1.5A
L7
C32
QT3225KL060MC-1.5A
L9
C40
D1
U1
14
111213
NCNCNC
VCC
OCSET
UGATE
PHASE
COMP
GND
4
7
HIP6013
100R,(0805,1%)
R223
R224
169R,(0805,1%)
AVCC3
C41
+
104
1N4148
2
10
BOOT
9
8
DVCC5
DVCC3
C33
C31
+
104
470u/16V
Analog Power
C39
to ADC
470u/16V
C5102
R5610K
R2030
RFD3055SM
VCC
PANEL_ON/OFF
C8
C6
C7
+
+
104
470u/16V
PVCC_5/3V
C29
104
R65
1K
Q5
3904
470u/16V
R60
51K
Q4
3904
R66NC
C10
Q2
ZD1
MBR340T3
DVCC5
14
12
7
DVCC5
INV_ON/OFF
104
70uH/COIL/3A
U3A
74HCT14
GND
L3
R63
4.7K
R6710K
R61
10K
R622.7K
R64
1K
C263
R53
C262
10uF/25V
10K
104
6
ENABLE
3
C9
SS
1
104
RT
5
FB
C16 220pF
H2,AD9884,LVDS
,SDRAM,PANEL
U4
23
VOUTVIN
VSS
RC1587M
1
104
C264
NC
U6
23
VOUTVIN
VSS
AS1117M/3.3V
1
104
R54
30K
R58
10K
Q3
1
S
2
S
3
S
45
GD
9435A
BGT_ADJ
R68
0
VCC5
R55
30K(NC)
8
D
7
D
6
D
CON4
1
2
3
4
5
WAFER,2022-05/DIP
DVCC3
C23
104
VCC5
DVCC5
DVCC3
AVCC3
PVCC+12INV
GND_POWER
PANEL3.3V
QT3225KL060MC-1.5A
L2
QT3225KL060MC-1.5A
C21
L5
+
47uF/10V,LESR
VCC5
DVCC5
DVCC3
AVCC3
PVCC
GND_POWER
PVCC_5/3V
C12
C14
+
470u/10V
104
PVCC
C22
C24
+
47uF/10V,LESR
104
P.02,03,09,10
P.03,04,05,09,10,11
P.02,03,05,09
P.11
DRAWING
APPROVED
LP-10R01 Power Distribution
TAIWAN VIDEO SYSTEM CO.,LTD.
SizeDocument NumberRev
B
LP-10R01 Power Distribution
Date:Sheet
19Friday, March 30, 2001
0
of
Page 13
7.2 VGA Input
VGA1
1
VGA_R
VGA_R_GND
6
11
VGA_G
2
VGA_G_GND
7
12
DDC_SDA
3
VGA_B
VGA_B_GND
8
13
VGA_HSYNC
4
9
VGA_CVCC5
14
VGA_VSYNC
5
10
15
DDC_SCL
CON VGA DB15
DVCC5
JY-5017-06
DIN 1
8
TCH1
XH
1
YH
2
XL
3
YL
4
CON4/2.0
P. 01
DVCC5
P. 01
AVCC3
VCC
R69NC
AVCC3
L10BEAD
L11BEADD2
L12BEAD
D3
CVCC5
1N4148
D5
D4
D9
5.6VD85.6V
365
1
2
DVCC5
AVCC3
C47
5.6V
100pF
C48
5.6V
100pF
3
12
12
DAN217-T146(ROHM)
AVCC3
D6
3
12
12
DAN217-T146
AVCC3
D10
3
12
12
DAN217-T146
C46 47nF
3
3
3
R74
75
C52 47nF
R80
75
R82
75
R73270
R79270
R81270C54 47nF
RED
GREEN
BLUE
R700
R760
CVCC5
1
2
3
45
U7
NC
NC
NC
VSSSDA
24LC21
U3B
34R710
C43
74HCT14
NC
U3D
98
C49
74HCT14
NC
8
VCC
7
VCLK
6
SCL
R75NC
C53
10K(NC)
104
R20747
R20847
R20947
RED
GREEN
BLUE
HSYNC
VSYNC
R204
GND_POWER
DVCC5
14
U3C
56
C44
7
74HCT14
NC
U3E
1110R770R7833
C50
74HCT14
NC
R205
R206
10K
10K
VGA_VSYNC
DDC_SCL
DDC_SDA
RED
GREEN
BLUE
HSYNC
VSYNC
GND_POWER
GND
D7
1N4148
P. 03
P. 03
P. 03
P. 03,08
P. 03,08
R7233
DVCC5
C42
104
HSYNCVGA_HSYNC
C45
NC
VSYNCVGA_VSYNC
C51
NC
GND_POWER
DRAWING
APPROVED
LP-10R01 VGA Input
TAIWAN VIDEO SYSTEM CO.,LTD.
SizeDocument NumberRev
B
LP-10R01 VGA Input
Date:Sheet
of
29Friday, March 30, 2001
0
Page 14
7.3 ADC
DVCC3
DVCC3
P.01
P.01
P.01
P.02
P.02
P.02
P.02
P.02
P.08
P.08
P.08
P.08
P.08
D13 1N4148(NC)
HSYNC
HSTOPLL
D14 1N4148(NC)
VSYNC
DVCC5
DVCC3
AVCC3
VSYNC
HSYNC
RED
GREEN
BLUE
SCL
SDA
HSTOPLL
CLAMP
PIO6
R8310K(NC)
R841K(NC)
R8533
R86NC
R89NC
VCC
DVCC5
DVCC3
AVCC3
VSYNC
HSYNC
RED
GREEN
BLUE
SCL
SDA
HSTOPLL
CLAMP
PIO6
C55
47uF/10V,LESR
47uF/10V,LESR
R92
0
L13
QT2012
C56
+
104
47uF/10V,LESR
C0603
L14
QT2012
C71
+
C70
104
C0603
CLAMP
R87
NC
Serial Port Address Select
for AD9884A
DVCC3
R99
NC
AD_A0AD_A1CKINV
R103
0
102
128
1
DVCC3_ADDVCC3
C58
+
C57
104
C0603
+
C72
47uF/10V,LESR
AVCC3PVD
+
C82
47uF/10V,LESR
GREEN
R88NC
R90
1K
Sampling Clock Inversion
Tie high to invert.
Tie low for normal rising
edge.