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
The LCD MONITOR will contain a main board, a power board, an audio 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.
PWPC board
(Include: adapter, inverter)
AC-IN
100V-240V
Monitor Block
CCFL Drive.
Main Board
Keyboard
Flat Panel and
CCFL backlight
RS232 Connector
For white balance
adjustment in factory
mode
Video signal DDC
HOST Computer
4
19" LCD Color Monitor AOC 197P+
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
1 Power Button & Indicator 4 - / Brightness
2 Menu / Enter 5 Auto config / Exit
3 + / Contrast
/Power Button & Indicator:
Press this button to turn the monitor ON or OFF, And display the monitor’s state.
- Power Indicator:
- Green — Full Power Mode
- Orange — Active-off Mode
- MENU / ENTER :
Activate OSD menu when OSD is OFF or activate/de-activate adjustment function when OSD is ON or Exit OSD
menu when in Volume Adjust OSD status.
- +/ Contrast:
Activates the volume control when the OSD is OFF or navigate through adjustment icons when OSD is ON or
adjust a function when function is activated.
- - / Brightness:
Activates the volume control when the OSD is OFF or navigate through adjustment icons when OSD is ON or
adjust a function when function is activated.
- Auto config / 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 for 2 seconds to activate the Auto Adjustment function.
The Auto Adjustment function is used to set the HPos, VPos, Clock and Focus.
5
19" LCD Color Monitor AOC 197P+
3.3 Adjusting the Picture
· 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.
Main Menu
Item
Luminance
Image Setup
Image
Position
Color Temp.
Auto
Adjustment
OSD Setup
Main Menu
Icon
Sub Menu
Item
Contrast
Brightness
Focus
Clock
H. Position
V. Position
Warm N/A Recall Warm Color Temperature from EEPROM.
Cool N/A Recall Cool Color Temperature from EEPROM.
sRGB N/A Recall sRGB Temperature from EEPROM.
User / Red
User / Green
User / Blue
Yes N/A Auto adjusting H/V position, focus, phase.
No N/A Back to main OSD.
H. Position
V. Position
OSD Timeout
Sub Menu
Icon
Description
Contrast from Digital-register.
Backlight Adjustment
Adjust Picture Phase to reduce Horizontal-Line noise
Adjust picture Clock to reduce Vertical-Line noise.
Adjust the horizontal position of the picture.
Adjust the vertical position of the picture.
Red Gain from Digital-register.
Green Gain Digital-register.
Blue Gain from Digital-register.
Adjust the horizontal position of the OSD.
Adjust the vertical position of the OSD.
Adjust the OSD timeout.
Language
Information
Reset
Exit
Language N/A Set OSD language.
Information N/A
Yes N/A Clear each old status of Auto-configuration .
No N/A Do not execute reset, return to main menu.
N/A N/A Exit OSD
Show the resolution, H/V frequency and input port of current
input timing.
1 TMDS Data 2- 13 TMDS Data 3+
2 TMDS Data 2+ 14 +5V Power
3 TMDS Data 2/4 Shield 15 Ground(for+5V)
4 TMDS Data 4- 16 Hot Plug Detect
5 TMDS Data 4+ 17 TMDS Data 06 DDC Clock 18 TMDS Data 0+
7 DDC Data 19 TMDS Data 0/5 Shield
8 N.C. 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 -
Signal Name
24 - Pin Color Display Signal Cable
Pin No.
Signal Name
7
19" LCD Color Monitor AOC 197P+
4.2 Factory Preset Display Modes
Standard
Dos-mode 720 x 400
VGA 640 x 480
VGA 640 x 480 37.5 75
SVGA 800 x 600 37.879 60
SVGA 800 x 600 46.875 75
XGA 1024 x 768 48.363 60
XGA 1024 x 768 56.476 70
XGA 1024 x 768 60.02 75
XGA 1024 x 768 48.78 60
XGA 1024 x 768 60.241 75
SXGA 1280 x 1024 64 60
SXGA 1280 x 1024 80 75
Resolution
4.3 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 Volt age
CURRENT
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)
Horizontal Vertical
Frequency (kHz) Frequency (Hz)
31.47 70
31.47 60
8
19" LCD Color Monitor AOC 197P+
5 Panel Specification
5.1 Display Characteristics
5.2 Optical Characteristics
9
19" LCD Color Monitor AOC 197P+
5.3 Parameter guide line for CCFL Inverter
1.TFT LCD Module:
2.Back Light Unit:
10
19" LCD Color Monitor AOC 197P+
6. Block Diagram
6.1 Software Flow Chat
1
2
N
4
5
Y
6
7
Y
N
N
3
18
9
10
Y
N
N
12
Y
14
19
N
11
13
15
17
N
Y
N
Y
16
Y
11
19" LCD Color Monitor AOC 197P+
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 AUT O 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?
12
19" LCD Color Monitor AOC 197P+
6.2 Electric Block Diagram
6.2.1 Main Board
FLASH MEMORY
PM25LV512
(U402)
H sync
V sync
RGB
D-Sub
Connector
(CN405)
LCD Interface
(CN101)
Scalar TSUMO56J
(Include: MCU, ADC, OSD etc)
(U401)
RGB
EEPROM
24LC16B
(U403)
DCLK+
DCLK-
DVID
Connector
(CN406)
EEPROM
M24C02
(U404)
EEPROM
M24C02
(U405)
13
19" LCD Color Monitor AOC 197P+
6.2.2 Inverter / Power Board
AC input
EMI filter
Start Circuit: R905、R906、
R907、R908、R909、R910
Lamp
OSC and
Output
Circuit
Feedback
Circuit
Bridge
Rectifier
and Filter
PWM
Control IC
DC Convert
Circuit
Over Voltage
Protect
Transformer
PWM
Control IC
Rectifier
diode
MOSFET
PWM
Over
Voltage
Protect
12V
ON/OFF
ON/OFF Control
DIM
5V
14
19" LCD Color Monitor AOC 197P+
7. Schematic
7.1 Main Board
15
19" LCD Color Monitor AOC 197P+
16
19" LCD Color Monitor AOC 197P+
17
19" LCD Color Monitor AOC 197P+
18
19" LCD Color Monitor AOC 197P+
19
19" LCD Color Monitor AOC 197P+
7.2 Power Board
1
+
BD901
2A 800V
3
R900
330K 1/8W
2
-
4
2
3
L902
L
1
4
2
3
L901
L
1
4
C909 0.47uF/250V
R901
330K 1/8W
R902
330K 1/8W
3
12
CN901
SOCKET
C902
0.001uF/ 250V
C901
0.001uF/ 250V
12
t
T2.5A/250V
F901
NR901
5 ohm/8A
1
2
0.1uF/50V
GND1
1
GND
HS3 D920
HEAT SIN K
+
C912
C907
100uF/450V
IC901
LD7575
R911
100K 1/10W
1
GND
C916
0.1uF/50V
7
穝
470PF/25V
GND2
1
2
HEAT SINK
8
HV
LD7575
N.C
RT1CS
C914
HS4 Q900
R905
10K 1/8W
OUT
GND
COMP
4
2
T901
4
C905
0.0033uF/250V
C900
0.0022uF/250V
IC902
PC123FY 2 4P
O
2
O
1
43
IC921
KIA431
O
O
R909
100K 2W
C910
1500pF/1KV
D901
UF4003PT
+
C911
D910
LL4148WP
R912
10 1/8W
10K 1/10W
R913
1K 1/10W
C915
22uF/50V
R915
D911
NC
NC
N.C ZD901
RLZ27B
12
6
VCC
5
3
C913
220pF/50V
D900
BA159GPT
R910
7R5 1/8W
Q900
FQPF8N60C
1
32
R916
0.43 2W
Q910
1
NC
32
12
11
10
86
7
9
12
R954
47 1/8W
R955
47 1/8W
R956
47 1/8W
R951
R952
47 1/8W
R953
47 1/8W
47 1/8W
3
1
3
1
D922
3A/60V
C920
0.001uF/ 500V
D920
SBT150-10LS
2
2
N.C D921
FMW-2156
C921
0.001uF/ 500V
R922
470 1/4W
R925
1K 1/10W
C928
0.1uF/50V
R928
1K 1/4W
ZD921
RLZ13B
12
D915
R927
100 1/10W
+
C922
680uF/25V
+
1000uF/16V
LL4148WP
蔼跋
19mm,ㄏノ13x16size
L921
+
C923
+
C924
680uF/25V
680uF/25V
C926
+
C932
470uF/16V
ZD922
RLZ5.1B
12
D916
LL4148WP
R923
10K 1/10W
C929
0.1uF/ 50V
R930
100 1/10W
RJ901
0 1/8W
3.5UH
L922
R924
3.6K 1/10W 1%
R929
2.4K 1/10W 1%
+
470UF/25V
3.5UH
C925
+
C927
470UF/16V
R926
33K 1/10W 1%
RJ902
0 1/8W
R931
10K 1/8W
CN902
CONNECTOR
F902
0 1/8W
1
2
3
4
5
6
7
8
9
10
J901
TIN COATED
+12V
ZD920
TPSMP9 1A-E3 DO-220AA
12
F903
0 1/8W
ON/OFF
+5V
C931
0.1uF/50V
C930
0.1uF/50V
AOC (Top Victory) Electronics Co., Ltd.
Title
Size Document NumberRev
Custom
Date:Sheet
audio 12V
DIM
PWPC1742HDE2P(715G1823-1)
Monday, May 29, 2006
+5V
J902
TIN COATED
J903
TIN COATED
J904
TIN COATED
J905
TIN COATED
J906
TIN COATED
J907
TIN COATED
J908
TIN COATED
J909
TIN COATED
J910
TIN COATED
J911
TIN COATED
11
of
A
20
19" LCD Color Monitor AOC 197P+
RJ801
0 1/8W
+12V
ON/OFF
AOC (Top Victory) Electronics Co., Ltd.
Title
Size Doc um ent N um berRev
Date:Sheet
R803
10K 1/10W
N.C R806
470 1/8W
+5V
N.C R838
0 1/8W
DIM
R808
470K 1/8W
C803
0.01UF/50V
J811
TIN COATED
J812
TIN COATED
J818
TIN COATED
J823
TIN COATED
2. FOR 17" 4 LAMPS INVERTER
PWPC1742HDE1
Monday, May 29, 2006
300K 1/8W
PMBS3904
J814
TIN COATED
J819
TIN COATED
RJ802
0 1/8W
R802
Q801
1
N.C C801
0.1uF/50V
R811
150K 1/10W
1
32
C804
2.2uF/25V
J815
TIN COATED
J820
TIN COATED
R812
10K 1/10W
RJ803
R804
10K 1/8W
R809
1M 1/10W
J816
TIN COATED
J821
TIN COATED
of
ZD801
RLZ5.6B
RJ804
0 1/8W
PMBS3904
C805
1000PF/50V
A
0 1/10W
32
Q802
PMBS3904
11
R805
470 1/8W
Q803
1
R810
R813
1M 1/10W
J817
TIN COATED
J822
TIN COATED
穝糤箂ン
C811
470UF/25V
32
VCC
R807
22 1/8W
100K 1/10W
R814
56K 1/10W
C820
470UF/25V
C828,C829
+
C806
1UF/25V
+
N.C C828
0.1uF/50V
AM9945
10 1/10W
Q805
R842
N.C C829
0.1uF/50V
R818
15 1/8W
C812
N.C R839
1500PF/50V
33K 1/8W
8
6
D1N7D1N
S1N1G1N2S2P3G2P
IC801
1
DRV1
2
VDDA
3
TIMER
4
DIM
5
ISEN
6
VSEN
7
OVPT
NC18NC2
OZ9938
R828
C822
N.C R840
1500PF/50V
33K 1/8W
1000P/50V
D2P5D2P
4
PGND
DRV2
GNDA
CT
SSTCMP
LCT
ENA
15 1/8W
8
S1N1G1N2S2P3G2P
N.C C814
16
15
14
13
12
11
10
9
N.C C815
1000P/50V
6
D1N7D1N
R819
15 1/8W
C813
1500PF/50V
R837
10 1/10W
R829
C823
D2P5D2P
4
15 1/8W
1500PF/50V
Q806
AM9945
PT801
80GL17T-36-DN
5
3
4
18
15K 1/10W
C830
100PF/50V
1
R815
R816
100K 1/10W
C808
C807
0.01UF/50V
80GL19T-36-DN
5
3
4
18
C832
7
R820
2
D801
BAV70
3
R817
1M 1/10W
C809
6800PF/50V
PT802
R830
15K 1/10W
100PF/50V
1
3
36K 1/10W 1%
0.047UF/50V
D803
BAV70
7
2
C816
10PF/3KV
R821
100K 1/10W
C831
N.C R 844 39K 1/ 10W
C810
560PF/50V
C825
10PF/3KV
R831
100K 1/10W
C817
3PF/3KV
R822
3M / 1/2W
C818
270PF/50V
R827
3.6K 1/10W 1%
R841
R826
C819
0.022UF/ 25V
300 1/10W 1%
390 1/10W 1%
100PF/50V
N.C R823
75K 1/10W
1Mohm brust frequency:400HZ
C826
3PF/3KV
C827
270PF/50V
C833
100PF/50V
N.C R833
75K 1/10W
R832
3M / 1/2W
R834
3.6K 1/10W 1%
R836
1K 1/10W
2
3
1
D802
BAV99
R825
560 1/10W
17" R841 =390ohm
19" R841 = 300ohm
R843
1K 1/10W
3
D804
BAV99
R835
560 1/10W
2
1
C835
1UF/25V
C837
1UF/25V
1UF/25V
C838
C836
1UF/25V
CN801
2
1
33G8021-2D-U
CN802
2
1
33G8021-2D-U
CN803
1
2
33G8021-2D-U
CN804
1
2
33G8021-2D-U
21
19" LCD Color Monitor AOC 197P+
8. PCB Layout
8.1 Main Board
22
19" LCD Color Monitor AOC 197P+
23
19" LCD Color Monitor AOC 197P+
24
19" LCD Color Monitor AOC 197P+
8.2 Power Board
25
19" LCD Color Monitor AOC 197P+
26
19" LCD Color Monitor AOC 197P+
27
19" LCD Color Monitor AOC 197P+
8.3 Key Board
8.4 Audio Board
28
19" LCD Color Monitor AOC 197P+
9. Maintainability
9.1 Equipments and Tools Requirement
1. Voltmeter.
2. Oscilloscope.
3. Pattern Generator.
4. DDC Tool with an IBM Compatible Computer.
5. Alignment Tool.
6. LCD Color Analyzer.
7. Service Manual.
8. User Manual.
29
19" LCD Color Monitor AOC 197P+
9.2 Trouble Shooting
9.2.1 Main Board
1. NO SCREEN APPEAR
No power
Press power key and look
if the picture is normal
Please reinsert and make sure
the AC of 100-240 is no rmal
Approximately 30 minutes should be allowed for warm up before proceeding White-Balance adju stment.
1. How to do the Chroma-7120 MEM. Channel setting
A. Reference to chroma 7120 user guide
B. Use “ SC” key and “ NEXT” key to modify x, y, Y value and use “ID” key to modify the
TEXT description Following is the procedure to do white-balance adjust
2. Setting the color temp. you want
A. MEM.CHANNEL 3 (7800 color):
7800 color temp. parameter is x = 296 ±20, y = 311 ±20, Y = 180 cd/m
B. MEM.CHANNEL 4 (6500 color):
6500 color temp. parameter is x = 313±20, y = 329 ±20, Y =180 cd/m2
3. Into factory mode of 197P+
Turn on power, press the MENU button, pull out the power cord, and then plug the power cord. Then the fact ory
OSD will be at the left top of the panel.
4. Bias adjustment:
2 ,
Set the Contrast
to 50; Adjust the Brightness to 90.
5. Gain adjustment:
Move cursor to “-F-” and press MENU key
A. Adjust C2 (7800) color-temperature
1. Switch the Chroma-7120 to RGB-Mode (with press “MODE” button)
2. Switch the MEM. Channel to Channel 3 (with up or down arrow on chroma 7120)
2
3. The LCD-indicator on chroma 7120 will show x = 296 ±20, y = 311 ±20, Y =180 cd/m
4. Adjust the RED of color1 on factory window until chroma 7120 indicator reached the value R=100
5. Adjust the GREEN of color1 on factory window until chroma 7120 indicator reached the value G=100
6. Adjust the BLUE of color1 on factory window until chroma 7120 indicator reached the value B=100
7. Repeat above procedure (item 4,5,6) until chroma 7120 RGB value meet the tolerance =100±5
B. Adjust C1 (6500) color-temperature
1. Switch the chroma-7120 to RGB-Mode (with press “MODE” button)
2. Switch the MEM.channel to Channel 4(with up or down arrow on chroma 7120)
2
3. The LCD-indicator on chroma 7120 will show x = 313 ±20, y = 329 ±20, Y = 180 cd/m
4. Adjust the RED of color3 on factory window until chroma 7120 indicator reached the value R=100
5. Adjust the GREEN of color3 on factory window until chroma 7120 indicator reached the value G=100
6. Adjust the BLUE of color3 on factory window until chroma 7120 indicator reached the value B=100
7. Repeat above procedure (item 4,5,6) until chroma 7120 RGB value meet the tolerance =100±5
C. Turn the Power-button off to quit from factory mode.
H40G 19N61528A ID LABEL
H40G 58161547B AOC LOGO LABEL
H41G780061511A WARRANTY CARD
H44G3965615 3A CARTON
H45G 87 1 6 R PE BAG FOR MONITOR
H45G 87 4 3 R PE BAG FOR BASE
H45G 87 4 H R PE BAG FOR BASE
H52G6025 16 18 INSULATE SHEET
H70G200761520A CD MANUAL
Q15G8313 1 AC SOCKET BRACKET
Q15G8342 N 1 MAIN FRAME
Q33G4985 GM 1L KEY BUTTON
Q33G4986 1 1C POWER LENS
Q34G1871 GM AB REAR COVER
Q34G1872 GMB1B BEZEL
Q41G7800615B31 QSG
Q44G3965 3EPE EPE(L)
Q44G3965 4EPE EPE(R)
Q44G3965 5 U TYPE SHEET
37
19" LCD Color Monitor AOC 197P+
Q45G 88606 14 R PE BAG
Q45G 88621 29 R PE RING
Q52G6025 11999 INSULATE SHEET
Q85G 740 2 1 SHIELD
CN202 33G802414C H 2*7PIN DUAL ROW RIGHT A
CN201 88G 30210K PHONE JACK
715G1819 1 KEY BOARD PCB
CN801 33G8021 2E U WAFER
CN802 33G8021 2E U WAFER
CN803 33G8021 2E U WAFER
CN804 33G8021 2E U WAFER
40G 45762420A ID LABEL
IC902 56G 139 3A PC123Y22FZOF
NR901 61G 58080 WT RST NTCR 8 OHM
R916 61G152M438 64 RST MOFR 0.43 OHM +-5%
C909 63G107K474 HS X2 CAP 0.47UF K 275VAC
C816 65G 3J1206ET H 12PF 5% SL 3KV TDK
C825 65G 3J1206ET H 12PF 5% SL 3KV TDK
C817 65G 3J3096ET H 3PF,J,3KV,Z5P
C826 65G 3J3096ET H 3PF,J,3KV,Z5P
C900 65G306M2222BP 2200PF +-20% 400VAC
C905 65G306M3322BP 3300PF 20%
C907 67G315Z10115H ELCAP 100UF +-20% 450V
L902 73G 174 64 H LINE FILTER
L901 73G 174 76 L CHOKE COIL LI TAI LF-00
L921 73G 253 91 S CHOKE COIL
L922 73G 253 91 S CHOKE COIL
T901 80GL17T 33 N POWER X'FMR
PT801 80GL17T 36 DN XFMR FOR POWER DARFON
PT802 80GL17T 36 DN XFMR FOR POWER DARFON
CN901 87G 501 32 S AC SOCKET
CN902 95G8014 12 42 HARNESS