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
1
24" LCD Color Monitor AOC 2436Sa
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 might 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.)
2
24" LCD Color Monitor AOC 2436Sa
Revision List
Version Date Revision History Remark
A00 June.-04-2010 Initial release TKAAABNB6WA1UNE
3
24" LCD Color Monitor AOC 2436Sa
1. Monitor Specification
model name 2436Sa
Driving system TFT Color LCD
Viewable Image Size 60.9 cm diagonal
LCD Panel
Resolution
Physical
Characteristics
Environmental
Pixel pitch 0.2768mm(H) x 0.2768mm(V)
Video R, G, B Analog lnterface & Digital Interface
Separate Sync. H/V TTL
Display Color 16.7M Colors
Dot Clock 148.5 MHz
Horizontal scan range 30 kHz - 80 kHz
Horizontal scan Size(Maximum) 531.36mm
Vertical scan range 55 Hz - 75 Hz
Vertical scan Size(Maximum) 298.89mm
Optimal preset resolution 1920 x 1080 (60 Hz)
Plug & Play VESA DDC2B/CI
Input Connector D-Sub 15pin
Input Video Signal Analog: 0.7Vp-p(standard), 75 OHM
Power Source 100-240V~, 50/60Hz
Power Consumption
USB Downstream port (A type ) To USB device, loading < 100mA
off timer 0~24hours Select timing to turn off the monitor.
Speakers 2W x 2
Connector Type 15-pin Mini D-Sub
Signal Cable Type Detachable
Dimensions & Weight:
Temperature:
Humidity:
Altitude:
Typical < 49 W
Standby < 1 W
Height (with base) 425.47mm
Width 582.14mm
Depth 206mm
Weight (monitor only) 5.5kg
Weight (with packaging)7.3 kg
Operating 0° to 40°
Non-Operating -25°to 55°
Operating 10% to 85% (non-condensing)
Non-Operating 5% to 93% (non-condensing)
Operating 0~ 12,000 ft (3,658 m)
Non-Operating 0~ 40,000 ft (12,192 m )
4
24" LCD Color Monitor AOC 2436Sa
2. LCD Monitor Description
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.
(Include: adapter, inverter)
Power board
AC-IN
100V-240V
Monitor Block Diagram
CCFL Driver
Main Board
Keyboard
USB board
Flat Panel and
CCFL backlight
HOST Computer
RS232 Connector
For white balance
adjustment in factory
mode
Video signal DDC
5
24" LCD Color Monitor AOC 2436Sa
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
PowerPress to turn on or turn off the monitor.
(4 : 3 or wide) / Up Press key to change the screen aspect ratio between standard 4:3 format or Wide
format.
Auto / Down Auto configure hot key: When the OSD is closed, press Auto button to do auto configure.
Notes : When Eco mode is not set as “Standard”, Contrast and Brightness can not be adjusted; When DCR is set as
“On”, Contrast, Brightness, Eco mode and Gamma can not be adjusted.
M236H1-L01 is a 23.6” TFT Liquid Crystal Display module with 4 CCFL Backlight unit and 30 pins
2ch-LVDS interface. This module supports 1920 x 1080 Full HD mode and can display up to 16.7M colors.
The inverter module for Backlight is not built in.
5.2 Optical Characteristics
9
24" LCD Color Monitor AOC 2436Sa
5.3 Electrical Characteristics
1.TFT LCD Module:
2.Back Light Unit:
10
24" LCD Color Monitor AOC 2436Sa
6. Block Diagram
6.1 Software Flow Chart
N
10
12
14
1
Y
2
N
4
5
Y
6
7
9
Y
N
N
Y
N
Y
11
13
15
3
8
N
Y
N
16
Y
18
17
N
19
Y
11
24" LCD Color Monitor AOC 2436Sa
REMARK:
1) MCU initialize.
2) Is the EEprom blank?
3) Program the EEprom by default values.
4) Get the PWM value of brightness from EEprom.
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 EEprom.Turn on the LED and set it to green color. Scalar initialize.
10) In standby mode?
11) Update the lifetime of back light.
12) Check the analog port, are they’re 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
24" LCD Color Monitor AOC 2436Sa
6.2 Electrical Block Diagram
6.2.1 Scalar Board
FLASH MEMORY
EN25F20-100GCP
(U402)
Crystal 14.31818MHz
(X401)
Scalar TSUMU18ER-LF-1
(Include :MCU,ADC,OSD etc)
H sync
V sync
RGB
D-Sub
Connector
(CN101)
VGA_SDA,
VGA_SCL
EEPROM
M24C02
(U405)
(U401)
LCD Interface
(CN403)
Key Control
Interface
(CN409)
13
24" LCD Color Monitor AOC 2436Sa
A
6.2.2 Inverter / Power Board
C input
Lamp
EMI filter
Rectifier,Filter
(R904,R905)
PWM Control IC
Output
Circuit
Bridge
Start Circuit
LD7576
(IC901)
Transformer
Transformer
(PT801)
(T901)
Power Switch
(Q901)
Photocoupler
(IC903)
(Q805,Q806)
Rectifier diodes
16V
5V
Regulator
(IC904)
MOSFET
16V
+5V
Feedback
Circuit
Audio Power Amplifier
APA2069JITUL
(IC601)
PWM Control IC
ta9687GN
(IC801)
ON/OFF
5V
DIM
PID
CN601(Phone Jack)
CN602
14
24" LCD Color Monitor AOC 2436Sa
7. Schematic
7.1 Main Board
715G3244 1
SST
Eon
SST
010A
020A
Eon
020
CMVCC17
CMVCC7
According to MST's
request, reserve another
RST circuit.
Check PT801 have the output of square wave at short time
NG
OK
Check resonant wave of PT801
NG
OK
Change IC801
Check PT801
Check C819,C820,C821,C822
Check the output of PT801
NG
OK
Check connecter & lamp, feedback and protect circuit
Change PT801
32
24" LCD Color Monitor AOC 2436Sa
9.2.3 Key Board
OSD is unstable or not working
Is Keypad board connecting normally?
NG
Connect Keypad Board
Is Button Switch normally?
OK
NG
Replace Button Switch
Is Keypad board normally?
OK
NG
Replace Keypad Board
OK
Check main board
33
24" LCD Color Monitor AOC 2436Sa
10. White- Balance, Luminance Adjustment
Approximately 30 minutes should be allowed for warm up before proceeding White-Balance adjustment.
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 (6500K color):
6500K color temp. parameter is x = 313 ±30, y = 329 ±30, Y =210 cd/m2
B. MEM.CHANNEL 4 (7300K color):
7300K color temp. parameter is x = 302 ±30, y = 318 ±30, Y = 180 cd/m
C. MEM.CHANNEL 9 (9300K color):
9300K color temp. parameter is x = 283 ±30, y = 297 ±30, Y =170 cd/m2
D. MEM.CHANNEL 10 (SRGB color):
SRGB color temp. parameter is x = 313 ±30, y = 329 ±30, Y =170 cd/m2
2 ,
3. Enter into factory mode
Turn off the power, then press ∧ key,∨ key and press the Power button at the same time, the next, press the
Menu button,the factory OSD will be at the left top of the panel.
4. Bias adjustment:
Set the Contrast
to 50; Adjust the Brightness to 90.
5. Gain adjustment:
Move cursor to “-F-” and press MENU key
A. Adjust Warm (6500K) 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)
3. The LCD-indicator on chroma 7120 will show x = 313 ±30, y = 329 ±30, Y = 210 cd/m
2
4. Adjust the RED on factory window until chroma 7120 indicator reached the value R=100
5. Adjust the GREEN on factory window until chroma 7120 indicator reached the value G=100
6. Adjust the BLUE 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 Normal (7300K) 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 = 302 ±30, y = 318 ±30, Y =180 cd/m
4. Adjust the RED on factory window until chroma 7120 indicator reached the value R=100
5. Adjust the GREEN on factory window until chroma 7120 indicator reached the value G=100
6. Adjust the BLUE 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. Adjust Cool (9300K) color-temperature
34
24" LCD Color Monitor AOC 2436Sa
1. Switch the chroma-7120 to RGB-Mode (with press “MODE” button)
2. Switch the MEM.channel to Channel 9(with up or down arrow on chroma 7120)
3. The LCD-indicator on chroma 7120 will show x = 283±30, y = 297 ±30, Y =170 cd/m
4. Adjust the RED on factory window until chroma 7120 indicator reached the value R=100
5. Adjust the GREEN on factory window until chroma 7120 indicator reached the value G=100
6. Adjust the BLUE 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
D. Adjust SRGB color-temperature
1. Switch the chroma-7120 to RGB-Mode (with press “MODE” button)
2. Switch the MEM.channel to Channel 10(with up or down arrow on chroma 7120)
3. The LCD-indicator on chroma 7120 will show x = 313±30, y = 329 ±30, Y =170 cd/m
4. Adjust the RED on factory window until chroma 7120 indicator reached the value R=100
5. Adjust the GREEN on factory window until chroma 7120 indicator reached the value G=100
6. Adjust the BLUE 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
E. Turn the Power-button off to quit from factory mode.
2
2
35
24" LCD Color Monitor AOC 2436Sa
11. Monitor Exploded View
36
24" LCD Color Monitor AOC 2436Sa
12. BOM List
Note: The parts information listed below are for reference only, and are subject to change without notice. Please go to
http://cs.tpv.com.cn/hello1.asp for the latest information.
TKAAABNB6WA1UNE
Location
040G 58162435A P/N LABEL FOR MANUAL PE BAG 050G 600 1 W WHITE STRAP (1G004991) 052G 1186 SMALL TAPE 052G 1208 A ALUMINIUM TAPE 052G 1211 B Conductive Tape 85mm *40mm *0.09mm
E07801 078G0020 2 V SPEAKER 4 OHM 2 W 430/230mm 40X20mm
E08904 089G 173 56 4B AUDIO CABLE
E08905 089G 175 8 C USB CABLE A+B 1.8M
E08902 089G 715HAAE01 SIGNAL CABLE
E08901 089G404A15N HL AC POWER CORD 1500mm
E08907 095G179J30NE16 FFC CABLE 30PIN P1.0MM 210MM
E09508 095G8014 5XH09 HARNESS 5P(PLUG)-5P(2501) 200MM
E09503 095G8014 7TE05 HARNESS 7P-6P 350MM
0D1G1730 6120 SCREW 0D1G1730 8120 SCREW 0M1G 130 6120 SCREW M3X6 705GH934026 24"LCD STAND-BASE ASS'Y 750GLU240H1212N000 PANEL M240HW01 V200 SZ AUO
A15G1265402 Main Frame-2436V A34G1063AEDA9S0100 REAR COVER 2436V
A34G1938BBLA1B0130 BEZEL 2436V
A85G0140201 AC Shield H26G 800504 2A barcode H40G 24N61522A 2436Sa ID LABEL H40G 58161569A USB LABEL H40G 583615 6A Win7 gold EPEAT EPA LABEL H40G 58361526A 2436Sa sliver carton label
H41G780061586B QSG
H44GD027102 EPS
H44GD027202 EPS
H44GD027615 7A 2436Sa CARTON H45G 77 6 PE PACKING H45G 87 1 20 EPE COVER H70G2010615 4A 2436Sa CD MANUAL
KEPC9HAB KEY BOARD
PWPCAK41AHD3 POWER BOARD Q45G 76 28 H A PE BAG FOR MANUAL Q45G 76 28V13 A PE BAG Q50G 4 10 TIE (Y1900221) Q52G 1185 99 big carton tape for aoc
USB9HA3 USB BOARD
USB9HA4 USB BOARD
0Q1G1040 10120 SCREW
A34G1064AED 1S0100 Stand-Front
A34G1065ABJ 1S0100 Stand-Back
Part No. Description Remark
37
24" LCD Color Monitor AOC 2436Sa
A34G1066AED 1S0130 BASE A37G0108 2 HINGE H01G6006 1 Screw
756GHACB A2003 MAIN BOARD-CBPC9ABA1H3
SMTCA-U402 100GAMAK003W11 MCU ASS'Y-056G1133137
CN409 033G3802 7B Y W WAFER
CN404 033G3802 9B Y W WAFER
CN403 033G801930F CH JS CONNECTOR
040G 45762412B CBPC LABEL
R480 061G152M22964L RST MOFR 2.2ohm +-5% 2WS
CN101 088G 35315F XH D-SUB 15PIN VERTICAL CONN WITH SCREW
GND1 009G6005 1 GROUND TERMINAL
CN602 033G3802 4 WAFER PH-4
CN804 033G8021 2E L CONNECTOR
CN803 033G8021 2E L CONNECTOR
CN802 033G8021 2E L CONNECTOR
CN801 033G8021 2E L CONNECTOR
040G 45762412B CBPC LABEL
IC903 056G 139 7 1 IC EL817MA M-TYPE
NR901 061G 58809MEN
R946 061G152M561 64 SY RST MOFR 560 OHM +-5% 2WS FUTABA
R947 061G152M561 64 SY RST MOFR 560 OHM +-5% 2WS FUTABA
C904 063G107K2246S1 X2 CAP 0.22UF K 275VAC
C903 063G107K224AUM CAP X2 0.22uF 10% 305V
C822 065G 3J5606ET CAP CER 56PF J 3KV
C821 065G 3J5606ET CAP CER 56PF J 3KV
C820 065G 3J5606ET CAP CER 56PF J 3KV
C819 065G 3J5606ET CAP CER 56PF J 3KV
C817 065G 6J2096ET 2PF 5% SL 6KV
C902 065G305M1022BP Y2 1000PF M 250VAC Y5P
C901 065G305M1022BP Y2 1000PF M 250VAC Y5P
C921 065G306M1022BP 1000PF Y1.CAP
C900 065G306M3322BP 3300PF 20%
C804 067G215A1024KV EC 1000uF 25V 12.5*20mm
C918 067G215D6814KV
C917 067G215D6814KV
C939 067G215S1023KV
C934 067G215S1024KV
C915 067G215S4713KV
C905 067G315Z12115K
L904 073G 253 91 L CHOKE BY LI TA
L905 073G 253 91 L CHOKE BY LI TA
L903 073G 253 91 L CHOKE BY LI TA
CN901 087G 501 32 DL AC SOCKET DIP 3PIN+2PIN GROUND
CN601 088G 30214K DC
D907 093G3006 1 1 31DQ06FC3 NIHON INTER
CN902 095G 82013WE03 harness 13p-9p 200mm
RST NTCR 8OHM +-20% 4A XIANZHENG
CAP 105℃ 680uF M 25V
CAP 105℃ 680uF M 25V
EC CAP 105℃ 1000UF M 16V
EC 105℃ CAP 1000UF M 25V
EC 105℃ CAP 470UF M 16V
CAP 105℃ 120UF M 450V
PHONE JACK 5PIN +开口向下弹片
38
24" LCD Color Monitor AOC 2436Sa
705GQ857026 Q901 ASS'Y
705GQ893039 D908 ASS'Y
705GQ893040 D906 ASS'Y
PWAK41AHD3SMT POWER BOARD FOR SMT