AOC 193FW User manual

AOC 193FW (+)
1
SERVICE MANUAL
19” LCD Monitor
193FW (+)
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.

AOC 193FW (+)
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Table of Content
Revision List…………………………………………………………………………………………………………. 3
1. Monitor Specifications………………………………………………………………………………………….. 4
2. LCD Monitor Description……………………………………………………………………………………….. 5
3. Operating Instructions………………………………………………………………………………………….. 6
3.1 General Instructions…………………………………………………………………………………………... 6
3.2 Control Buttons………………………………………………………………………………………………... 6
3.3 Adjusting the Picture………………………………………………………………………………………….. 7
4. Input/Output Specification……………………………………………………………………………………... 9
4.1 Input Signal Connector……………………………………………………………………………………….. 9
4.2 Factory Preset Display Modes……………………………………………………………………………….. 9
4.3 Power Supply Requirements………………………………………………………………………………… 10
4.4 Panel Specification………………………………………………………………………………………….… 10
4.4.1Display Characteristics………………………………………………………………………………… 10
4.4.2Optical Characteristics…………………………………………………………………………………… 11
4.4.3 Parameter Guide Line For CCFL Inverter……………………………………………………………… 11
5. Block Diagram………………………………………………………………………………………………….… 12
5.1 Monitor Exploded View……………………………………………………………………………………….. 12
5.2 Software Flow Chart…………………………………………………………………………………………... 13
5.3 Electrical Block Diagram……………………………………………………………………………………… 15
5.3.1 Main Board………………………………………………………………………………………………... 15
5.3.2 Inverter/Power Board………………………………………………………….…………………………. 16
6. Schematic……………………………………………………………………………………………………….… 17
6.1 Main Board…………………………………………………………………………………………………….. 17
6.2 Power Board……………………………………………………………………….………………………….. 24
7. PCB Layout………………………………………………………………………………………………………. 27
7.1 Main Board…………………………………………………………………………………………………….. 27
7.2 Adapter Board………………………………………………………………………….……………………… 28
7.3 Inverter Board ………………………………………………………………………………………………… 28
8. Maintainability……………………………………………………………………………………………………. 29
8.1 Equipments and Tools Requirement………………………………………………………………………… 29
8.2 Trouble Shooting…………………………………………………………………………………………….… 30
8.2.1 Main Board………………………………………………………………………………………………... 30
8.2.2 Adaptor /Inverter/Board………………………………………………………………………………… 33
8.2.3 Keypad Board…………………………………………………………………………………………….. 34
9. White-Balance, Luminance adjustment …………………………………………………………………… 35
10. EDID Content……………………………………………………………………………………………………. 36
11. BOM List………………………………………………………………………………………………………..... 37
12. Different Parts list………………………………………………………………………………………….
181

AOC 193FW (+)
3
Revision List
Version Date Revision History TPV Model Name
A00 Jan-16-06 Initial Release T982KM2HDBAON
A01 Sep-13-06 Add the sold area model T95MM2HLWCCKNP
A02Sep-18-06 Add the sold area model T95MM2HMWCUPNP
A03 Oct-05-06 Add the sold area model
T982KM2NKBA1N
T982KM2NKBA1NP
T95MM2HKWCA1FP
A04 Oct-25-06 Add the sold area model T95MM2HCWCPUNP
A05Nov-22-06 Add TPV Model in item 12 T982KM4HBAE1NP
A06 Nov-30-06 Add BOM in item 11 T982KM2HMBUIN
A07 Jan-26-07 Add BOM in item 11 T96MM2NQWCA1N
A08 Jun-05-07 Add BOM in item 11 T95MM2HCWCCGNP

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1. Monitor Specifications
Items Specifications
LCD Panel
Driving system TFT Color LCD
Size 48.0cm(19.0")
Pixel pitch 0.285mm(H) x 0.285mm(V)
Viewable angle 150˚ (H) 130˚ (V)
Response time (type) 8 ms for AU panel
Input
Separate Sync. H/V TTL
Video 15Pin R, G, B Analog signal
24Pin DVI digital signal
H-Frequency 30kHz – 80kHz
V-Frequency 55-75Hz
Display Color 16.7M colors
Dot Clock 135MHz
Contrast Ratio 500:1
White Luminance 300cd/m2
Max. Resolution 1440 × 900 @60Hz
Plug & Play VESA DDC2BTM
Power Consumption ON Mode<36W
OFF Mode<1W
Power Source 100~240VAC,47~63Hz
Maximum Screen Size Horizontal : 410mm
Vertical: 256mm
Environmental
Considerations
Operating Temp: 5°C to 50°C
Storage Temp: -20°C to 60°C
Operating Humidity: 10% to 85%

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2. LCD Monitor Description
The LCD MONITOR will contain a main board, an adapter, an inverter board and a keypad board which house the
flat panel control logic, brightness control logic and DDC.
The Inverter board will drive the backlight of panel and the DC-DC conversion.
The Adapter will provide the 12V DC-power to inverter/power board.
HOST Computer
AC-IN
100V-240V
Inverter board
Flat Panel and
CCFL backlight
Main Board RS232 Connector
For white balance
adjustment in factory
mode
CCFL Drive.
Video signal
Monitor Block Diagram
Keyboard
Adaptor board
DC-IN
12V

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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 front 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
-Power Button:
When pressed, the monitor enters the off mode, and the LED turns blank. Press again to restore normal status.
-Contrast:
Adjust contrast or function adjusts.
- Brightness:
Adjust brightness or function adjusts.
-Auto Adjust button / Exit:
1. When OSD menu is in active status, this button will act as EXIT-KEY (EXIT OSD menu).
2. When OSD menu is in off status, press this button over 2 seconds to activate the Auto Adjustment function.
The Auto Adjustment function is used to set the HPos, VPos, Clock and Focus.
-Power Indicator:
Green — Power On mode.
Red — Off mode.
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.
1. Power Key 2. LED
3. MENU/ENTER 4. Contrast
5. Brightness 6. Auto Adjust Key/Exit

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3.3 Adjusting The Picture
Adjustment steps:
1. Press the MENU-button to activate the OSD window.
2. 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.
3. Press or to change the settings of the selected function.
4. To exit and save, select the exit function. If you want to adjust any other function, repeat steps 2-3.
OSD TABLE:
Main Menu
Item
Main Menu
Icon Sub Menu Item Sub Menu Icon Description
Luminance
Contrast Contrast from Digital-register.
Brightness Backlight Adjustment
Image Setup
Focus
Adjust Picture Phase to reduce
Horizontal-Line noise
Clock Adjust picture Clock to reduce
Vertical-Line noise.
Image
Position
H. Position
Adjust the horizontal position of
the picture.
V. Position
Adjust the vertical position of the
picture.
Color Temp.
Warm N/A Recall Warm Color Temperature
from EEPROM.
Cool N/A Recall Cool Color Temperature
from EEPROM.
User / Red Red Gain from Digital-register.

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8
User / Green Green Gain Digital-register.
User / Blue Blue Gain from Digital-register.
Input signal
select
Analog
N/A Select the analog signal input
Digital N/A Select the digital signal input
OSD Setup
H. Position
Adjust the horizontal position of
the OSD.
V. Position
Adjust the vertical position of the
OSD.
OSD Timeout Adjust the OSD timeout.
Language
English N/A Set OSD display language to
English.
Deutsch N/A Set OSD display language to
German.
Français N/A Set OSD display language to
French.
Español N/A Set OSD display language to
Spain.
Italiano N/A Set OSD display language to
Italian.
简体中文 N/A Set OSD display language to
Simplified Chinese.
Information Information N/A
Show the resolution, H/V
frequency and input port of current
input timing.
Reset
Yes N/A
Clear each old status of
Auto-configuration and set the
color temperature to Cool.
No N/A Do not execute reset, return to
main menu.
Exit N/A N/A Exit OSD

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4. Input/Output Specification
4.1 Input Signal Connector
Analog connector
DVI-D connector
Pin No. Description Pin No. Description
1. TMDS data 2－13. TMDS data 3＋
2. TMDS data 2＋14. ＋5V Power
3. TMDS data 2/4 Shield 15. GND
4. TMDS data 4－16. Hot Plug Detect
5. TMDS data 4＋17. TMDS data 0－
6. DDC Clock 18. TMDS data 0＋
7. DDC Data 19. TMDS data 0/5 Shield
8. Analog Vertical Sync 20. TMDS data 5－
9. TMDS data 1－21. TMDS data 5＋
10. TMDS data 1＋22. TMDS Clock Shield
11. TMDS data 1/3 Shield 23. TMDS Clock +
12. TMDS data 3－24. TMDS Clock －
24 - Pin Color Display Signal Cable
Pin No. Description Pin No. Description
1. Red Video 9. +5V
2. Green Video 10. Detect Cable
3. Blue Video 11. Ground
4. Ground 12. DDC-Serial Data
5. Ground 13. H-Sync
6. Red Ground 14. V-Sync
7. Green Ground 15. DDC-Serial Clock
8. Blue Ground
VGA connector layout
1
5
6
10
11
15

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4.2 Factory Preset Display Modes：
Standard Resolution Horizontal
Frequency
Vertical
Frequency
Dos-mode
720 × 400
31.47kHz
70.0Hz
VGA
640 × 480
31.47kHz
60.0Hz
640 × 480
37.50kHz
75.0Hz
SVGA
800 × 600
37.879kHz
60.0Hz
800 × 600
46.875kHz
75.0Hz
XGA
1024 × 768
48.363kHz
60.0Hz
1024 × 768
56.476kHz
70.0Hz
1024 × 768
60.021kHz
75.0Hz
SXGA
1280 × 1024
64.000kHz
60.0Hz
1280 × 1024
80.000kHz
75.0Hz
WXGA
1440 × 900
55.935kHz
59.8Hz
4.3 Power Supply Requirements
A/C Line voltage range 100 V ~ 240 V
A/C Line frequency range 50 ±3Hz, 60 ±3Hz
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 No advance effects (no loss of information or defect)
with a maximum of 1 half-wave missing per second
DC output Voltage 5VDC ± 5％; 12VDC± 5％
CURRENT 1.5Amp (5V) ；2 Amp (12V)
4.4 Panel Specification
4.4.1 Display Characteristics

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4.4.2 Optical Characteristics

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5. Block Diagram
5.1 Monitor Exploded View

AOC 193FW (+)
13
5.2 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

AOC 193FW (+)
14
1) MCU initializes.
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
messages 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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5.3 Electrical Block Diagram
5.3.1 Main Board
MCU
MTV512 MV 44PIN-PLCC
(U601)
TSU56AK-LF
(Include ADC, OSD)
(U401)
EEPROM
AT24C16N
(U602)
D-Sub
Connector
(CN301)
EEPROM
M24C02
(U301)
H sync
V sync
RGB
DB15_SDA,
DB15_SCL
EPR_SDA
EPR_SCL
LCD Interface
(CN503)
DVI
Connector
(CN302)
EEPROM
M24C02
(U302)
SDA,
SCL
RGB
CLK+
CLK-
Crystal
X601
24Mhz
Crystal
X601
14.318Mhz
Key Board
CN602

AOC 193FW (+)
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5.3.2 Inverter/Power Board
EMI filter
Bridge
Rectifier
and Filter
Start Circuit: R903、
R904
PWM
Control IC
Transformer
Feed
back
circuit
Rectifier
diodes
AC input
5V
12V
ON/OFF Control
PWM
Control IC
Feedback
Circuit
OSC and
Output
Circuit
DC Convert
Circuit
MOSFET
Over Voltage
Protect
Lamp
ON/OFF
DIM
CN201
PWM
DC-to-DC IC
Over
Voltage
Protect

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6. Schematic
6.1 Main Board
VAA3
VCC12V
B4
2.POWER
onPanel_5V/3.3V
onBACKLITE
AdjBACKLITE
VCC3.3
VCC1.8
VAA1
VAA2
VAA3
VAA4
VCC5V
VCC12V
VLCD
VCPU
VLCD
VAA4VAA3
VCC12V
B3
6.MCU
onBACKLITE
onPANEL_5V/3.3V
SDA
INT
CSZ
DDC_DAT
ST_DET1
SCL
HWRESET
DDC_CLK
Volume
VCC5V
VCC12V
VCPU
RXD
TXD
AD0
AD1
AD2
AD3
DDC_WPDVI_DET
DDCCI_SEL
VCC5V
VAA2
VAA4
VCPU
B5
5.PANEL INTERFACE
VLCD
PB[0..9]
PA[0..9]
VCC3.3
B1
3.INPUT
RIN
GIN
BIN
VSYNC
GNDR
GNDG
GNDB
ST_DET1 HSYNC
SOGDDC_CLK
DDC_DAT
R+
R-
G-
G+
B+
B-
CLK+
CLK-
TXD
RXD
DDC_WP
DVI_DET
DDCCI_SEL
VCC5V
PA[0..9]
PB[0..9]
VCC1.8
B2
4.SCALER
RIN
GIN
SOG
BIN
GNDR
GNDG
GNDB
HSYNC
VSYNC
R+
R-
G-
G+
B+
B-
CLK+
CLK-
CSZ
SCL
SDA
HWRESET
INT
Volume
AdjBACKLITE
PA[0..9]
PB[0..9]
VCC1.8
VCC3.3
VAA1
VAA2
VAA3
VAA4
AD0
AD1
AD2
AD3
VAA1
TOP B
TSU56AK FOR MYSON512 SWITCH
B
1 6Wednesday , October 06, 2004
Title
Size Document Number Rev
Date: Sheet of
VAA1
VCPU
VLCD
VCC1.8
VCC3.3
VAA2
TSU56AK SCHEMATIC

AOC 193FW (+)
19
R214
NC
FB201
NC
TO-263
VCPU 6
+
C215
47uF/16V
DIM R201 4.7K£[ 1/16W
R208
10K£[ 1/16W
FB202
600 OHM
R212 4.7K£[ 1/16W
VCC1.8 4
Q204
PMBS3904
CE
B
VCC12V
VCPU
C207
0.1uF
C214
0.1uF
C201
0.1uF
VLCD 5
Q202
PMBS3904
CE
B
+C208
10uF/16V
onPanel_5V/3.3V6
VCC12V
D201 SS14
C203
0.1uF
VCC5V+
C
B E
C216
0.1uF
C212
0.1uF
VCC3.3 4
VLCD
VCC3.3
VCC12V
VCC3.3
R206
10K£[ 1/16W R210
NC
GND
+
C218
47uF/25V
C206
1uF/25V
VCC5V
U202
AIC1084-33M
3
1
2
VIN
ADJ
VOUT
GND
R204
10K£[ 1/16W
VAA4 4
R209
0£[ 1/16W
H1
SCREW3.2RM
1 2
3
4
5
6 7
8
9
1 2 3
4
5
6 7 8
9
GND
+
C202
220uF/25V
U201
AZ1117D-1.8
3 2
1
VI VO
GND
VCC5V+
+C204
220uF/25V
VAA3 4
Brightness
R202
10K£[ 1/16W
GND
R203
1K£[ 1/16W
VCC5V
C210
0.1uF
VCC5V
VCC5V+
C219
0.1uF/16V
POWER B
TSU56AK FOR MYSON512 SWICH
B
2 6Wednesday , October 06, 2004
Title
Size Document Number Rev
Date: Sheet of
H4
SCREW3.2RM
1
2 3
4
5
6
7
8
9
1 2 3
4
5
6 7 8
9
C
B E
VAA2 4
VCC12V
2004/09/05 ADD
TOUCH PANEL
POWER
VAA1
VAA4
+
C211
47uF/16V
Q201
PMBS3904
CE
B
C217
0.1uF
VCC5V
ON_OFFGND
VCC5V
C205
0.1uF
Q203
AO3401
PITCH 2.0
CN202
CONN
1
2
R211
10K£[ 1/16W
SOT-252
VCC5V
VCPU
R205 4.7K£[ 1/16W
D202
GS1D
R207 4.7K£[ 1/16W
VAA1 4
VCC5V
CN201
CONN
2
4
6
8
10
12
1
3
5
7
9
11
VCC1.8
VCC12V
H2
SCREW3.2RM
1
2
3
4
5
6
7 8
9
1 2 3
4
5
6 7 8
9
GND
VCC12V 6
VAA2
VCC5V
VCC5V
VCC5V 3,4,6
VAA3
GND
R213
NC
R215
51K£[ 1/16W
onBACKLITE 6
AdjBACKLITE4

AOC 193FW (+)
20
C310 0.047uF
R350 10£[ 1/16W
PC5V C302
NC
SOG 4
C323
0.1uF
4/2/2004-Add W/P control by MCU
R340
0£[ 1/16W
D305
BAV70
3
1 2
GIN 4
D326
BAV70
3
1 2
C309 0.047uF
DDC_CLK6
VGA_CON
D322
TZMC5V6-GS08 NC
R334
NC
C315
0.1uF
FB302 0£[ 1/16W
4/2/2004-Add R329,R330
Q301
PMBS3904
CE
BDDCCI_SEL 6
D309
BAV99
3
1 2
R338
10K£[ 1/16W
D319
TZMC5V6-GS08
VCC5V
R306 68£[ 1/16W
R327
75£[ 1/16W
C303
NC
4/2/2004-Add D324 Solution
D320
TZMC5V6-GS08
C306 0.047uF BIN 4
R+ 4
R343 10£[ 1/16W
R345 10£[ 1/16W
R310 1K£[ 1/16W
D303
BAV99
3
1 2
R330NC
GNDG 4
DVIDDC_5V
R335
4.7K£[ 1/16W
operating
voltage-2.5v-5.5v
VCC5V
R316 100£[ 1/16W
R333
NC
R301 33£[ 1/16W
VCC5V
R346 10£[ 1/16W G+ 4
operating
voltage-2.5v-5.5v
U302
M24C02WMN6
1
2
3
45
6
7
8A0
A1
A2
GNDSDA
SCL
WP
VCC
PC5V
D301
BAV99
3
1 2
C324
0.1uF
R329NC
C307 0.001uF
R349 10£[ 1/16W
D323
TZMC5V6-GS08 NC
R344 10£[ 1/16W
R319 100£[ 1/16W
ST_DET1 6
2004/09/05
ADD ESD
Solution
DVI_HPD
R320 100£[ 1/16W
C318
0.1uF
VCC5V
CN301
DB15
1
6
2
7
3
8
4
9
5
11
12
13
14
15 10
16
17
D317
TZMC5V6-GS08
C311
47pF
R323
10K£[ 1/16W
D310
BAV99
3
1 2
D321
TZMC5V6-GS08
DVI5V
R326
75£[ 1/16W
R309 100£[ 1/16W
HSYNC 4
VCC5V
R339 4.7K£[ 1/16W
R314
2.2K£[ 1/16W
R342 NC
VSYNC 4
TXD 6
DSUBDDC_5V
CLK_DDC2
C304 0.047uF
D314
LL5232B 5.6V 5%
C319
0.1uF
R- 4
GNDB 4
C305 0.047uF
U303
74VHC4053
12
11
2
1
54
6
13
10
9
14
15
3
7
8
16
0A
SA
0B
1B
0C ZC
INH
1A
SB
SC
ZA
ZB
1C
VEE
GND
VCC
D316
LL5232B 5.6V 5%
C320
0.1uF
R312 100£[ 1/16W
VCC5V
D318
TZMC5V6-GS08
DDC_DAT 6
DSUBDDC_5V
D324
BAV99/NC
3
1 2
FB304 430 OHM
C325
0.1uF
R336 4.7K£[ 1/16W
CLK+ 4
RIN 4
DVI5V
D315
LL5232B 5.6V 5%
D307
BAV99
3
1 2
R313
2.2K£[ 1/16W
INPUT B
TSU56AK FOR MYSON512 SWITCH
C
3 6Wednesday, October 06, 2004
Title
Size Document Number Rev
Date: Sheet of
DVIDDC_5V
C301
NC
VCC5V
C322
0.1uF
DDC_WP 6
C314
0.1uF
DDC_CLK 6
D308
BAV99
3
1 2
B+ 4
R303 33£[ 1/16W
CLK_DDC
GNDR 4
B- 4
VCC5V
R321
10K£[ 1/16W
R325
75£[ 1/16W
CLK- 4
C313
0.1uF
DAT_DDC
D313
BAV99
3
1
2
R348 10£[ 1/16W
FB303 0£[ 1/16W
VCC5V
CN302
JACK NC
1
2
3
4
5
6
7
8
25
28
9
10
11
12
13
14
15
16
26
29
17
18
19
20
21
22
23
24
27
31
32
DAT2-
DAT2+
2/4shield
DAT4-
DAT4+
DDC SCL
DDC SDA
VSYNC
R
HSYNC
DAT1-
DAT1+
1/3shield
DAT3-
DAT3+
+5V
SYNC GND
HPD
G
RGB GND
DAT0-
DAT0+
0/5shield
DAT5-
DAT5+
clk shield
clk+
clk-
B
31 32
C321
0.1uF
D304
BAV70
3
1
2
D312
BAV99
3
1 2
R315 100£[ 1/16W
DDC_DAT6
G- 4
HSI
R318
10K£[ 1/16W
R347 10£[ 1/16W
RXD 6
R304 470£[ 1/16W
R317
10K£[ 1/16W
2004/08/19 ADD
U301
M24C02WMN6
1
2
3
45
6
7
8A0
A1
A2
GNDSDA
SCL
WP
VCC
D311
BAV99
3
1
2
R305 68£[ 1/16W
R324
10K£[ 1/16W
R302 33£[ 1/16W
DAT_DDC2
R337 4.7K£[ 1/16W
C312
220pF
C308 0.047uF
8/9/2004-Add DVI
CABLE Detect
R341 NC
FB301 0£[ 1/16W
R331
10K£[ 1/16W
DVI_DET 6
C316
0.1uF
VSI
D302
BAV99
3
1 2
R311 1K£[ 1/16W
C317
0.1uF
D325
MLL5232B 5.6V
R307 68£[ 1/16W
8/9/2004-Add DDC/CI
Solution
R332 1K£[ 1/16W
R308
10K£[ 1/16W
D306
BAV99
3
1 2