Envision P2271WL Service Manual
21.5" LCD Monitor Envision P2271WL
1
Service
Service
Service
Horizontal Frequency
31-80 KHz
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
Important Safety Notice.……............................……......3
1.Monitor Specification..............................………..........4
2.LCD Monitor Description……………………………......5
3.Operation Instruction…………...............……..............6
3.1.General Instructions...........................…...................6
3.2.Control Button…………….…..............……...............6
3.3.OSD Menu…………….…...........................…...........7
4.Input/Output Specification............……………............11
4.1.Input Signal Connector............………….................11
4.2.Factory Preset Display Modes…….........................12
4.3.Panel Specification.....………...…………................13
5.Block Diagram…….....................………….................16
5.1.Main Board…….…………...………………....….......16
5.2.Power Board……………..….…………...….......17
6.Schematic……………........................................18
6.1.Main Board………...........................................18
6.2.Adapter Board...……......................................22
6.3.Converter Board...……...................................23
6.4.Key Board...…….............................................25
7.PCB Layout..………….......................................26
7.1.Main Board………...........................................26
7.2.Adapter Board……......................................29
7.3.Converter Board….....................................32
7.4.Key Board…………….....................................33
8.Maintainability……….........................................34
8.1.Equipments and Tools Requirement...............34
8.2.Trouble Shooting…………..............................35
9.White-Balance, Luminance Adjustment.............39
10.Monitor Exploded View………..…….…...........41
11.BOM List…………………………………............43
CAUTION: USE A SEPARATE ISOLATION TRANSFOMER FOR THIS UNIT WHEN SERVICING
2
Revision List
Version Release Date Revision History TPV Model Name
A00 Apr.07.2011 Initial release TI92A82BW6E1HN
A01 Dec.12,2011
Add new power board:
715G4219P02000004S
Update:
Block Diagram
Schematic
PCB Layout
BOM List
TIAGA82MW6E1HN
TIAGA82BW6E1HN
3
Important Safety Notice
Proper service and repair is important to the safe, reliable operation of all AOC Company Equipment. The service
procedures recommended by AOC and described in this service manual are effective methods of performing service
operations. Some of these service operations require the use of tools specially designed for the purpose. The
special tools should be used when and as recommended.
It is important to note that this manual contains various CAUTIONS and NOTICES which should be carefully read in
order to minimize the risk of personal injury to service personnel. The possibility exists that improper service
methods may damage the equipment. It is also important to understand that these CAUTIONS and NOTICES ARE
NOT EXHAUSTIVE. AOC could not possibly know, evaluate and advise the service trade of all conceivable ways in
which service might be done or of the possible hazardous consequences of each way. Consequently, AOC has not
undertaken any such broad evaluation. Accordingly, a servicer who uses a service procedure or tool which is not
recommended by AOC must first satisfy himself thoroughly that neither his safety nor the safe operation of the
equipment will be jeopardized by the service method selected.
Hereafter throughout this manual, AOC Company will be referred to as AOC.
WARNING
Use of substitute replacement parts, which do not have the same, specified safety characteristics may create shock,
fire, or other hazards.
Under no circumstances should the original design be modified or altered without written permission from AOC.
AOC assumes no liability, express or implied, arising out of any unauthorized modification of design.
Servicer assumes all liability.
FOR PRODUCTS CONTAINING LASER:
DANGER-Invisible laser radiations when open AVOID DIRECT EXPOSURE TO BEAM.
CAUTION-Use of controls or adjustments or performance of procedures other than those specified herein may
result in hazardous radiation exposure.
CAUTION -The use of optical instruments with this product will increase eye hazard.
TO ENSURE THE CONTINUED RELIABILITY OF THIS PRODUCT, USE ONLY ORIGINAL MANUFACTURER'S
REPLACEMENT PARTS, WHICH ARE LISTED WITH THEIR PART NUMBERS IN THE PARTS LIST SECTION OF
THIS SERVICE MANUAL.
Take care during handling the LCD module with backlight unit
-Must mount the module using mounting holes arranged in four corners.
-Do not press on the panel, edge of the frame strongly or electric shock as this will result in damage to the screen.
-Do not scratch or press on the panel with any sharp objects, such as pencil or pen as this may result in damage to
the panel.
-Protect the module from the ESD as it may damage the electronic circuit (C-MOS).
-Make certain that treatment person’s body is grounded through wristband.
-Do not leave the module in high temperature and in areas of high humidity for a long time.
-Avoid contact with water as it may a short circuit within the module.
-If the surface of panel becomes dirty, please wipe it off with a soft material. (Cleaning with a dirty or rough cloth may
damage the panel.)
4
1. Monitor Specifications
LCD Panel
Model number P2271wL
Driving system TFT Color LCD
Viewable Image Size 54.69cm diagonal
Pixel pitch 0.248mm(H) x 0.248mm(V)
Video R, G, B Analog lnterface & Digital Interface
Separate Sync. H/V TTL
Display Color 16.7M Colors
Dot Clock 148.5MHz
Resolution
Horizontal scan range 31kHz - 80 kHz
Horizontal scan Size(Maximum) 476.64mm
Vertical scan range 56Hz - 75 Hz
Vertical scan Size(Maximum) 268.11mm
Optimal preset resolution 1920 x 1080 (60 Hz)
Highest preset resolution 1920 x 1080 (60 Hz)
Plug & Play VESA DDC2B/CI
Input Connector D-Sub 15pin & DVI-D
Input Video Signal
Analog: 0.7Vp-p(standard), 75 OHM,
Positive & DVI-D Digital Interface (TMDS)
Power Source 100~240VAC, 50/60Hz
Power Consumption
Active < 28W
Standby < 1W
Physical
Characteristics
Connector Type 15-pin Mini D-Sub & DVI-D
Signal Cable Type Detachable
Dimensions & Weight:
Height (with base) 365.80mm
Width 505.6mm
Depth 179.78mm
Weight (monitor only) 3.5kg
Weight (with packaging) 5.0kg
Environmental
Temperature:
Operating 0° to +40°
Non-Operating -20°to +60°
Humidity:
Operating 20% to 90% (non-condensing)
Non-Operating 10% to 90% (non-condensing)
Altitude:
Operating 0~ 6562ft
Non-Operating 0~ 40000ft
5
2. LCD Monitor Description
The LCD monitor will contain a main board, an Adapter board, a converter board and a key board 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.
AC-IN
100V-240
Monitor Block Diagram
Adapter board
Flat Panel and backlight
Main Board
RS232 Connector
For white balance
adjustment in factory
mode
Video signal, DDC
Key Board
Host Computer
Converter board
6
3. Operating Instructions
3.1 General Instructions
Press the power button to turn the monitor on or off. The other control knobs are located at front panel of the monitor
(See Figure). By changing these settings, the picture can be adjusted to your personal preferences.
* The power cord should be connected.
* Press the power button to turn on the monitor. The power indicator will light up.
3.2 Control Buttons
1 Auto /Source / Exit
2 Eco mode (DCR) / -
3 4:3 or wide / +
4 Menu / Enter
5 Power
7
3.3 OSD Menu
• Press the MENU-button to activate the OSD window.
• Press+ or - to navigate through the functions. Once the desired function is highlighted, press the MENU-button to
activate it. If the function selected has a sub-menu, press or again to navigate through the sub-menu functions.
Once the desired function is highlighted, press MENU-button to activate it.
• Press+ or - to change the settings of the selected function. To exit and save, select the exit function. If you want to
adjust any other function, repeat steps 2-3.
• OSD Lock Function: To lock the OSD, press and hold the Menu button while the monitor is off and then press
power button to turn the monitor on. To un-lock the OSD - press and hold the Menu button while the monitor is off
and then press power button to turn the monitor on.
• Eco Mode and DCR hot key: Press the Eco key continuously to select the Eco mode of brightness and DCR on
when there is no OSD (Eco mode hot key may not be available in all models).
• 4:3 or wide image ratio hot key: When there is no OSD, press + continuously to change 4:3 or wide image ratio. (If
the product screen size is 4:3 or input signal resolution is wide format, the hot key is disable to adjust).
• Source hot key: When the OSD is closed, press Auto/Source button will be Source hot key function (Only for the
models with dual or more inputs). Press Source button continuously to select the input source showed in the
message bar, press Menu/Enter button to change to the source selected.
• Auto configure hot key: When the OSD is closed, press Auto button for 2 second .will be auto configure hot key
function.
8
Function Control Illustration
9
10
11
4. Input/Output Specification
4.1 Input Signal Connector
Analog connector
Pin Number 15-Pin Side of the Signal Cable
1 Video-Red
2 Video-Green
3 Video-Blue
4 Ground
5 Detect Cable
6 GND-R
7 GND-G
8 GND-B
9 +5V
10 Ground
11
Ground
12 DDC-Serial data
13 H-sync
14 V-sync
15 DDC-Serial clock
DVI connector
Pin No. Signal Name Pin No. Signal Name Pin Signal Name
1 TMDS Data 2- 9 TMDS Data 1- 17 TMDS Data 0-
2 TMDS Data 2+ 10 TMDS Data 1+ 18 TMDS Data 0+
3 TMDS Data 2/4 Shield 11 TMDS Data 1/3 Shield 19 TMDS Data 0/5 Shield
4 TMDS Data 4- 12 TMDS Data 3- 20 TMDS Data 5-
5 TMDS Data 4+ 13 TMDS Data 3+ 21 TMDS Data 5+
6 DDC Clock 14 +5V Power 22 TMDS Clock Shield
7 DDC Data 15 Ground(for+5V) 23 TMDS Clock +
8 N.C. 16 Hot Plug Detect 24 TMDS Clock -
12
4.2 Factory Preset Display Modes
13
4.3 Panel Specification
4.3.1 General Features
The M215H1-L01 model is a 21.5 inch wide TFT-LCD module with LED Backlight Unit and a 30-pin 2ch-LVDS
interface. This module supports 1920 x 1080 Full HD (16:9 wide screen) mode and displays up to 16.7 millions
colors.
4.3.2 Display Characteristics
14
4.3.3 Electrical Characteristics
(1) TFT LCD
Ta = 25 ± 2 ºC
(2) Backlight
15
4.3.4 Optical Characteristics
16
5. Block Diagram
5.1 Main Board
14.31818MHZ
(X401)
FLASH ROM
EN25F20
(U402)
Scalar IC TSUMU58NWHL-LF-1
(Include ADC, OSD, MCU)
(U401)
Panel Interface
(CN301)
Key Control Interface
(CN402)
D-Sub Connector
(CN101)
DVI Connector
(CN102)
17
5.2 Power Board
Adapter board
Converter board
715G3649P01000004L
715G4219P02000004S
5V
EMI filter
Start Resistor
(R920,R921,R922)
PWM Control
(IC901)
Transformer
AC input
14.5V
Bridge
Rectifier
and Filter
Feedback
Circuit
Rectifier
diodes
Photo coupler
(IC902)
Over Voltage
Protect
Setup-up Controller
OZ9954SN
(U801)
12V
DIM
ENA
Current Feedback
OVP Circuit
Boost Circuit
LED
panel
(CN802&
CN803)
ZD801
PWM Control
TA9690GN
(IC801)
12V
MOSFET
(Q801)
DIM
ENA
L801
LED
(CN803)
18
6. Schematic
6.1 Main Board
715G3329 1 2
R115 10OHM1/16W
V_Sync
VGA_B+
R113
100R 1/16W 5%
Q101
NC
C122
1000pF
CMVCC1
DSUB_B+ 5
DSUB_R- 5
C105
5pF/50V
R105 10OHM1/16W
RXCP 5
DSUB_SCL
ESD_VCC
R102 0R05 1/10W 5%
DVI_HPD
R101
100R 1/16W 5%
FB103
BEAD
1 2
C119
NC
DSUB_V 5
DSUB_SDA
VGA_PLUG
DSUB_H 5
R112
75R 1/16W 5%
R124
4K7 1/16W 5%
R137
4K7 1/16W 5%
GND POWER
DVI_5V
U107
AZC199-04S
1
2
3 4
5
6
I/O1
GND
I/O2 I/O3
VDD
I/O4
VGA_B+
DDC_WP5
DDC2_SDA 5
DSUB_SDA
VGA_R+
DET_CABLE 5
RX2P
V_Sync
1
B
25Tuesday, Oct ober 27, 2009
<
称爹
>
2.0.INPU T
G3329-1-2-X-21-091027
OEM MOD EL Size
Rev
Date
Sheet
of
TPV MOD EL
PCB NAME
称爹
T P V ( Top Victory Electronics Co . , Ltd. )
Key Component
絬 隔 瓜 絪 腹
VGA_G-
R133
10K 1/16W 5%
U105
AZC199-04S
1
2
3 4
5
6
I/O1
GND
I/O2 I/O3
VDD
I/O4
C103
22pF
ESD_VCC2
DDC2_SDA
VGA_G+
RX0P 5
VGA_R+
DVI_1_5V
RX2N 5
R104 1K 1/16W 5%
VGA_PLUG
VGA_PLUG
DSUB_G- 5
R132 10R 1/16W 5%
ESD_VCC2
R118 100R 1/16W 5%
U106
AZC199-04S
1
2
3 4
5
6
I/O1
GND
I/O2 I/O3
VDD
I/O4
ESD_VCC1
DDC2_SCL
C104
22pF
U101
AT24C02BN-SH-T
1
2
3
45
6
7
8
A0
A1
A2
GNDSDA
SCL
WP
VCC
DDC2_SCL 5
C110
0.047uF
DSUB_5V
R107
2K2 1/16W 5%
RX1N 5
RXCN 5
DDC1_SCL
U102
AT24C02BN-SH-T
1
2
3
45
6
7
8
A0
A1
A2
GNDSDA
SCL
WP
VCC
R130 10R 1/16W 5%
R128 10R 1/16W 5%
FB102
BEAD
1 2
R139
6K8 1/16W 5%
VGA_R-
FB110
300 OHM
R135
10K 1/16W 5%
RXCN
H_Sync
RX2P 5
VGA_B+
C109
5pF/50V
RX0P
VGA_G+
R136
10K1/16W
RXCP
R108
75R 1/16W 5%
VGA_R-
VCC3.3
DSUB_5V
C121
1000pF
C107
1000pF
ESD_VCC1
VGA_G-
C124
0.1uF/16V
VGA_B-
DGND
RX1P 5
RX2N
C115
0.1uF/16V
U103
AZC199-04S
1
2
3 4
5
6
I/O1
GND
I/O2 I/O3
VDD
I/O4
CN102
JACK
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
26
25
DAT2-
DAT2+
2/4shield
DAT4-
DAT4+
DDC SCL
DDC SDA
VSYNC
DAT1-
DAT1+
1/3shield
DAT3-
DAT3+
+5V
SYNC GND
HPD
DAT0-
DAT0+
0/5shield
DAT5-
DAT5+
clk shield
clk+
clk-
GND
GND
ESD_VCC
FB105
300 OHM
RX1P
C117
0.22uF16V
R121
NC
DSUB_G+ 5
C108
0.047uF
C120
NC
U104
AZC199-04S
1
2
3 4
5
6
I/O1
GND
I/O2 I/O3
VDD
I/O4
R119 100R 1/16W 5%
DSUB_B- 5
R116
75R 1/16W 5%
DDC1_SCL
C116
0.22uF16V
DVI_1_5V
DDC_WP5
H_Sync
DVI_HPD
R110 470R 1/16W 5%
C112
NC
CN101
1
6
2
7
3
8
4
9
5
11
12
13
14
15
10
17 16
C101
NC
ESD_VCC1
HDCP_CTRL 5
R120 10K 1/16W 5%
ESD_VCC
R138
4K7 1/16W 5%
R106
2K2 1/16W 5%
VGA_B-
R109 47 OHM 1/16W
R140
NC
R125
4K7 1/16W 5%
DDC2_SDA
R123
10K1/16W
RX0N 5
R111 10OHM1/16W
C118
NC
CMVCC1
VGA_R+
R129 10R 1/16W 5%
DDC1_SDA
R117 47 OHM 1/16W
D108
BAV70
3
1
2
CMVCC13,4
DDC2_SCL
C113
5pF/50V
DVI_5V
FB104
300 OHM
C102
0.047uF
DDC1_SDAR127 10R 1/16W 5%
ZD104
RLZ5.6B
DDC1_SCL5
DDC1_SDA5
C114
0.047uF
R126 10R 1/16W 5%
DSUB_SOG 5
RX1N
RX0N
R134 10R 1/16W 5%
ESD_VCC2
VGA_G+ FB101
BEAD
1 2
C106
0.047uF
R114 47 OHM 1/16W
D104
BAV70
3
1
2
DSUB_R+ 5
C111
0.047uF
R131 10R 1/16W 5%
R122
NC
R103 1K 1/16W 5%
DSUB_SCL
Loading...