AOC 917Sw Service Manual
19" LCD Color Monitor AOC 917Sw
Service
Service
Service
Horizontal Frequency
30-83 KHz
TABLE OF CONTENTS
Description Page Description Page
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 Buttons........................................................6
3.3. OSD Menu….............................................................7
4. Input/Output Specification............………………..........9
4.1. Input Signal Connector............…………...................9
4.2. Power Supply Requirements....................................9
4.3. Factory Preset Display Modes…….........................10
4.4. Panel Specification……………………………..…….10
5. Block Diagram…........................................................14
5.1. Software Flow Chart……………………………….....14
5.2.Electrical Block Diagram…...............................16
6.Schematic……………..........................................18
6.1.Main Board……….............................................18
6.2.Power Board...……...........................................23
6.3.Key Board...……................................................25
7.PCB Layout...…………........................................26
7.1.Main Board………...........................................26
7.2.Power Board….................................................28
7.4.Key Board…………..........................................30
8. Maintainability………............................................31
8.1.Equipments and Tools Requirement...............31
8.2.Trouble Shooting….………................................32
9. White-Balance, Luminance adjustment................38
10. Monitor Exploded View…...................................40
11.BOM List…………………………………...............41
12.Different Parts List……...………………...............54
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.
CAUTION: USE A SEPARATE ISOLATION TRANSFOMER FOR THIS UNIT WHEN SERVICING
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19" LCD Color Monitor AOC 917Sw
Revision List
Version Release Date Revision History TPV Model Name
T98SM5NBUWA1NN
T9RSM5NLUWCKNZ
T9RSM5NPUWA5NN
T9RSM5NPUWA5NG
A00 Feb.-17-2008 Initial release
T9RSM5NQUWA2NN
T9RSM5NQUWA3NN
T9RSM5NQUWA4NN
T9RSM5NKUWA2NN
2
19" LCD Color Monitor AOC 917Sw
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 radiation 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.)
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19" LCD Color Monitor AOC 917Sw
1. Monitor Specifications
Model number 917Sw
Driving system TFT Color LCD
Viewable Image Size 481mm diagoanl
LCD Panel
Resolution
Pixel pitch 0.2835mm(H) x 0.2835mm(V)
Video R, G, B Analog lnterface
Separate Sync. H/V TTL
Display Color 16.7M Colors
Dot Clock 128 MHz
Horizontal scan range 30 kHz - 83 kHz
Horizontal scan Size(Maximum) 408.24mm
Vertical scan range 56 Hz - 75 Hz
Vertical scan Size(Maximum) 255.15mm
Optimal preset resolution 1440 x 900 (60 Hz)
Highest preset resolution 1440 x 900 (60 Hz)
Plug & Play VESA DDC2B/CI
Input Connector D-Sub 15pin
Input Video Signal Analog: 0.7Vp-p(standard), 75 OHM, Positive
Power Source 100~240VAC, 47~63Hz
Active < 37W
Power Consumption
Standby < 1W
Physical
Characteristics
Environmental
Connector Type 15-pin Mini D-Sub
Signal Cable Type Detachable
Dimensions & Weight:
Height (with base) 439 mm
Width 358 mm
Depth 204 mm
Weight (monitor only) 3.8 kg
Weight (with packaging) 4.7 kg
Temperature:
Operating 0° to 50°
Non-Operating -20°to 60°
Humidity:
Operating 10% to 85% (non-condensing)
Non-Operating 5% to 80% (non-condensing)
Altitude:
Operating 0~ 3000m (0~ 10000 ft )
Non-Operating 0~ 5000m (0~ 15000 ft )
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19" LCD Color Monitor AOC 917Sw
2. LCD Monitor Description
The LCD monitor will contain a main board, a power 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.
(Include: adapter, inverter)
Power board
AC-IN
100V-240V
Monitor Block Diagram
CCFL Drive.
Key Board
Flat Panel and
CCFL backlight
Main Board
HOST Computer
RS232 Connector
For white balance
adjustment in factory
mode
Video signal, DDC
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19" LCD Color Monitor AOC 917Sw
3. Operating Instructions
3.1 General Instructions
Press the power button to turn the monitor on or off. The other control buttons are located at the front of the
panel of the monitor.
By changing these settings, the picture can be adjusted to your personal preferences.
The power cord should be connected.
-
Connect the video cable from the monitor to the video card.
-
Press the power button to turn on the monitor, the power indicator will light up.
-
3.2 Control Buttons
3.2.1 Key Control
1. Eco Mode / Up 2. Exit / - 3. Menu / + 4. Auto / Down 5. Power on/off
3.2.2 Key Function
1) Press the MENU-button ( ) to activate the OSD window.
2) Press
to activate sub-menu . Once the desired function is highlighted, press MENU-button to activate it.
3) Press
sub-menu . Press AUTO(
4) 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.
5) Eco Mode hot key (
OSD ( Eco mode hot key may not be available in all models).
6) Volume adjustment hot key : When there is no OSD , press Volume (
or to adjust volume ( Only for the models with speakers).
or to navigate through the functions. Once the desired function is highlighted, press the MENU-button
or to change the settings of the selected function. Press or to select another function in
) to exit . If you want to adjust any other function, repeat steps 2-3.
) : Press the Eco key continuously to select the Eco mode of brightness when there is no
) to active volume adjustment bar, press
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19" LCD Color Monitor AOC 917Sw
3.3 OSD Menu
OSD Function Introduction
Luminance Adjust Range Description
Brightness 0-100 Backlight Adjustment
Contrast 0-100 Contrast from Digital-register
Standard Mode
Text Mode
Internet Mode
Movie Mode
Adjust to Gamma 1
Adjust to Gamma 2
Enable dynamic contrast ratio
Eco mode
Gamma
DCR
Image Setup
Standard
Te xt
Internet
Game Game Mode
Movie
Sports Sports Mode
Gamma1
Gamma2
Gamma3 Adjust to Gamma 3
Off Disable dynamic contrast ratio
On
Clock 0-100 Adjust picture Clock to reduce Vertical-Line noise.
Focus 0-100 Adjust Picture Phase to reduce Horizontal-Line noise
H.Position 0-100 Adjust the horizonal position of the picture.
V.Position 0-100 Adjust the vertical position of the picture
Color Temp.
Warm
Normal
Cool
Recall Warm Color Temperature from EEPROM.
Recall Normal Color Temperature from EEPROM.
Recall Cool Color Temperature from EEPROM.
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19" LCD Color Monitor AOC 917Sw
sRGB
User-B Blue Gain from Digital-register
User-G Green Gain Digital-register.
Recall SRGB Color Temperature from EEPROM.
User
Color Boost
Full
Enhance
Nature Skin on or off Disable or Enable Nature Skin Mode
Green Field on or off Disable or Enable Green Field Mode
Sky-blue on or off Disable or Enable Sky-blue Mode
AutoDetect on or off Disable or Enable AutoDetect Mode
Demo on or off Disable or Enable Demo
Picture
Boost
Frame Size 0-100 Adjust Frame Size
Brightness 0-100 Adjust Frame Brightness
Contrast 0-100 Adjust Frame Contrast
Hue 0-100 Adjust Frame Hue
User-R Red Gain from Digital-register
User-Y Yellow Gain from Digital-register
User-C Cyan Gain from Digital-register
on or off Disable or Enable Full Enhance Mode
Saturation 0-100 Adjust Frame Saturation
Position
OSD Setup
H.Position 0-100 Adjust the horizontalposition of OSD
V.Position 0-100 Adjust the vertical position of OSD
Timeout 0-100 Adjust the OSD Timeout
Language
Extra
Auto Config yes or no Auto adjust the picture to default
Reset yes or no Reset the menu to default
DDC-CI Turn ON/OFF DDC-CI Support
Information
H. position Adjust Frame horizontal Position
V.position Adjust Frame vertical Position
Select the OSD language
Show the information of the main image and
sub-image source
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19" LCD Color Monitor AOC 917Sw
4. Input/Output Specification
4.1 Input Signal Connector
Analog connectors
Pin No. Description Pin No. Description
1. Red Video 9. +5V
2. Green Video 10. Ground
3. Blue Video 11. N.C.
4. N.C. 12. DDC-Serial Data
5. Detect Cable 13. H-Sync
6. Red Ground 14. V-Sync
7. Green Ground 15. DDC-Serial Clock
8. Blue Ground
VGA connector layout
4.2 Power Supply Requirements
A/C Line voltage range 100 V ~ 240 V
A/C Line frequency range
Current 1.5A max at 100V; 0.8A max at 240 V
Peak surge current < 55A peak at 240 VAC and cold starting
Leakage current < 3.5mA
Power line surge
DC output Voltage
CURRENT
15
6
11 15
50 ± 3Hz, 60 ± 3Hz
No advance effects (no loss of information or defect)
with a maximum of 1 half-wave missing per second
: 5VDC ± 5％; 12VDC± 5％
1.5Amp (5V) ；2 Amp (12V)
10
\
9
19" LCD Color Monitor AOC 917Sw
4.3 Factory Preset Display Modes
Stand Resolution
Dos-mode 720 × 400
640 × 480 31.47kHz 60.0Hz
VGA
640 × 480 37.50kHz 75.0Hz
800 × 600 37.879kHz 60.0Hz
SVGA
800 × 600 46.875kHz 75.0Hz
1024 × 768 48.363kHz 60.0Hz
XGA
SXGA
WXGA 1440 × 900 55.935kHz 59.8Hz
1024 × 768 56.476kHz 70.0Hz
1024 × 768 60.021kHz 75.0Hz
1280 × 1024 64.000kHz 60.0Hz
1280 × 1024 80.000kHz 75.0Hz
Horizontal
Frequency(Khz)
31.47kHz 70.0Hz
Vertical
Frequency(Hz)
4.4 Panel Specification
4.4.1 General Features
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19" LCD Color Monitor AOC 917Sw
4.4.2 Display Characteristics
11
19" LCD Color Monitor AOC 917Sw
4.4.3 Optical Characteristics
12
19" LCD Color Monitor AOC 917Sw
4.4.4 Electrical Characteristics
(1) TFT-LCD
(2) Backlight
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19" LCD Color Monitor AOC 917Sw
5. Block Diagram
5.1 Software Flow Chat
1
2
N
4
5
Y
6
7
Y
Y
3
N
N
18
9
10
Y
N
N
12
Y
14
19
N
15
11
13
17
N
Y
N
16
Y
Y
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19" LCD Color Monitor AOC 917Sw
1) MCU initialize.
2) Is the EPROM blank?
3) Program the EPROM by default values.
4) Get the PWM value of brightness from EPROM.
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 EPROM.
Turn on the LED and set it to green color.
Scalar initializes.
10) In standby mode?
11) Update the lifetime of back light.
12) Check the analog port, are there 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?
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19" LCD Color Monitor AOC 917Sw
(
)
5.2 Electrical Block Diagram
5.2.1 Main Board
FLASH ROM
SST25LF020A
(U402)
Crystal 14.318MHZ
(X401)
Scalar TSUM1PFR
(Include ADC, OSD, MCU)
D-Sub Connector
(U401)
CN101
Panel Interface
(CN403)
Key Control Interface
(CN402)
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19" LCD Color Monitor AOC 917Sw
5.2.2 Inverter/Power Board
AC input
EMI filter
Bridge
Rectifier
and Filter
Transformer
Rectifier
diodes
Start Circuit: R932, R933
CN902
PWM
Control IC
Feedback
Circuit
12V
5V
ON/OFF
Lamp
Output
Circuit
Feedback
Circuit
Transformer MOSFET
Control IC
Over Voltage
（IC801）
PWM
ON/OFF
Control
DIM
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19" LCD Color Monitor AOC 917Sw
6. Schematic
6.1 Main Board
715G2904 1
TSUM1PFR SCHEMATIC
ESD_VCC
CMVCC1
VCC3.3
CMVCC
ESD_VCC
DSUB_5V
DSUB_5V
VCC3.3
XGA/SXGA
DSUB_5V
ESD_VCC
VCC3.3
02.Input
VCC1.8
VCC1.8
on_BACKLIGHT
VCC3.3
Adj_BACKLIGH T
CMVCC
CMVCC1
DSUB_R+
DSUB_R-
DSUB_G+
DSUB_G-
DSUB_SOG
DSUB_B+
DSUB_B-
DSUB_H
DSUB_V
DDC1_SDA
DDC1_SCL
DET_CABLE
Mut e
Volume#
PANEL_ID#DSUB_5V
VCTRL
DSUB_R+
DSUB_RDSUB_G+
DSUB_GDSUB_SOG
DSUB_B+
DSUB_BDSUB_H
DSUB_V
DDC1_SDA
DDC1_SCL
DET_CABLE
on_BACKLIGH T
Mut e
Volume#
PANEL_ID #
Adj_BACKLIGH T
VCTRL
LVDS OUTPUT
VCC1.8
VCC1.8
VCC3.3
CMVCC
CMVCC1
PA[0..1]
PA[4..9]
PB[0..9]
PPWR_ON #
VCC3.3
PA[0..1]
PA[4..9]
PB[0..9]
CMVCC
CMVCC1
PA[0..1]
PA[4..9]
PB[0..9]
PPWR_ON #
CMVCC
CMVCC
ESD_VCC
05.Pow e r
03.Scalar
T P V ( Top Victory Electronics Co . , Ltd. )
絬 隔 瓜 絪 腹
Key Component
Date
01.Top
18
OEM MO D EL
TPV MODEL
PCB NAME
Sheet
715G2904-1
37Friday , February 29, 2008
of
04.Output
Size
Rev
称爹
A
1
<
称爹
>
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