This document was ed by and they confirmed that they have the permission to share it. If you are author or own the copyright of this book, please report to us by using this report form. Report 2z6p3t
is s et to
M enu H-Pos ition
You can adjust the horizontal position of the OSD.
M enu V-Pos ition
You can adjust the vertical position of the OSD.
2. OSD Adjustment (SETUP& R E SE T)
2. OSD Adjustment (SETUP& R ESET) M enu R es et
D escription Use this function to restore the visual quality and color settings to the factory defaults. •
Lang uag e PC.
M ag icR eturn
M ag icE co
The selected language is only applied to the product OSD. This setting does not affect the other functions of the
The function is available in Windows7 system.The monitor can not be recognized when it si turned off.To recognize it,you must turn it on. •
2. OSD Adjustment (SETUP& R ESET) M enu
D escription
Off Timer On/Off
You can turn the Off Timer on or off. •
Off Timer S etting
Turns the power off automatically when the configured time is reached.
C us tomized K ey
You can set the function of the Customized Key to one of the following. • PC signals <MagicBright> - <MagicAngle> - <MagicEco> -
• AV signals :
You can set the function of the Customized Key by selecting <SETUP&RESET> -
Auto S ource
•
PC /AV M ode
Set to PC when connected to a PC. Set to AV when connected to an AV device. This function does not analog mode.
Dis play Time
The OSD automatically disappears if no action is taken by the . You can determine the time to wait before the OSD is hidden. • <5 sec> - <10 sec> - <20 sec> - <200 sec>
M enu Trans parency
You can select the transparency of the OSD. •
2. OSD Adjustment (I NFOR M ATI ON)
M enu
D es cription
INFOR M ATION
Shows the frequency and resolution set on the PC.
O S D Lock M enu
OS D Lock & UnLock
D es cription After pus hing the "M E NU" button more than 5 seconds, O S D function is locked (unlocked). ※ You can als o adjust the brightness and contras t of the monitor with the O S D adjustment locking feature
2. OSD Adjustment (Factory M ode) M enu
Factory M ode
D escription
To enter the Service Function, set the Brightness /Contrast to 0 and press and hold the ENTER /SOURCE key for 5 seconds.
3. C ircuit Description (Product Structure) 1. Part S ee
P roduct S pecifications.
2. Mai n Boar d Par t Receives external PC analog signals, and then outputs the video signals to the using a Scaler and also outputs the same signals as external input.
3. LED DRI VER LED
DRIVER 4. Function B utton
Transfers the input signals where the Function button is used to the main board and displays the LE D .
3. C ircuit Description (New Part) *. Scaler(MSTR) SE979LMRD-LF Use a type of scaler with an embedded MCU core. -. Detailed Specifications On-Chip Microcontroller On-Chip OSD Controller LVDS/RSDS Transmitters 128-QFP Package / 3.3V/1.8V suppliers
3. C ircuit Description ( Part)
3. C ircuit Description ( Part) * PROTECTION*
LAMP(Inverter) PROTECION
=> The protection is activated if there is no because the lamp connector is disconnected or the lamp is cracked. => The over voltage protection starts as a lamp protection if the output voltage of the inverter transformer is high.
Power Protection
=> All protection (OVP/O) operates in Auto Recovery mode. When the is stopped temporarily due to a protection issue, it powers the on again to resume the operation after the problem is cleared. However, as an exception, in the case of a thermal protection issue, the can only operate normally if the power is turned off and is fully discharged and turned on again. This is controlled by a function designed in the power IC.
3. C ircuit Description (B lock Diag ram)
3. C ircuit Description (Scaler Part) BX 2231/BX 24331/BX 2431 LED Driver
979
RD-LF
3. C ircuit Description (Power Flow C hart)
S I3443B DV
+5V_PANE L PANE L TS UM W 88M DT3 Pin14 Pull up B L_E N Pull up AC 2DC _C TR L Pull up B L_ADJ_PWM Pull up C HK _HDM I Pull up
+5V_M AIN
B L_ADJ_ANALOG Pull up B D200
HDM I 1_5V (HDM I 2_5V)
+5V_ADP E DID_PR OTE C T pull up
+5V_E E PR OM D431 (D421)
DDC _LINE _C TR L Pull up DS UB DDC pull up AT24C 02 HDM I 1DDC pull up
DS UB _5V ZD100
HDM I 2DDC pull up
3. C ircuit Description (Power Flow C hart) Key P ull up P ANE L_EN Pull up WR _PR OTE C T Pull M C L/M DA Pull up up S -24C S 08AFJ
+3.3V S -1172B 33
F_PR OTE C T Pull up M X25L4005AM 2C S E 979LM R D-LF Pin44 P ull up S E 979LM R D-LF Pin27/35/53/92/98 B D651
+5V_M AIN
+3.3V_D
S E 979LM R D-LF Pin7/13/74/105/116
+3.3V_DIODE C HK _DS UB Pull up DS UB E S D PR OTE C T HDM I 1E S D PR OTE C T HDM I 2E S D PR OTE C T S E 979LM R D-LF Pin56
+1.8V S -1172B 18 B D671
+1.8V_D
S E 979LM R D-LF Pin5/24/75/88/106
3. C ircuit Description (C ircuit Diagram) HDM I Part
S caler : S E979LM R D
HDM I Part
Audio Part
3. C ircuit Description (C ircuit Diagram)
Function C onnector
Analog Part
3. C ircuit Description (C ircuit Diagram)
LED Driver Part
3. C ircuit Description (M ain PBA) LVDS LAMP Scaler IC Flash memory EEPROM
HDMI 1
HDMI2
Analog
3. C ircuit Description (M ain PBA) No
Block
비고
Description
1
Scaler IC300
Besides the ADC,LVDS,and scaling part,an MCU is embedded as well . All of them are integrated into one chip.
SE979LMRD-LF(BX2431)
2
Flash Memory IC200
Stores the MCU program embedded in the scaler. It is of a flash type and rewritable.
F25L04PA
3
IC402
Stores the OSD and various timing values.
24CS08
4
IC102
The memory to which analog DDC data is input
24C02
5
IC103
The memory to which HDMI 1 DDC data is input
24C02
6
IC104
The memory to which HDMI 2 DDC data is input
24C02
5
Regulator IC601/IC602
An IC that receives DC voltage inputs. It is used in circuits that stabilize the DC voltage .
S-1172B18-U5T1G S-1172B33-U5T1G
3. C ircuit Description (Adapter) S MPS Part LINE FILTE R ,X -C AP , Y-C AP
P O W E RTR ANS FO R M E R , D IO D E ,IND UC TO R , C apacitor
FE T S witchingB LOC K
InputFilterB LOC K
R eg ulator 12V out
12V out
Cont r ol Ci r cui t
P HO TO C O UP LE R , Ci r cui t
TL430
D C/A C INV ERTER M A IN B OA RD
4. Assembly and Disassembly Caution :
1. Make sure to turn off the monitor before starting the disassembly. 2. Never use metal tools other than the jig provided when disassembling the product. 3. For the disassembly, carefully follow the steps given below. 4. The jig for opening the back cover: BH81-00001A
Des cription 1 、 Remove the stand body
2. ① Turn the monitor over and insert your hands into the top of the monitor at the center and separate the front cover in the direction of the arrow as shown in the figure. ② Separate the sides of the front cover up to the directed line as shown in the figure.
Picture Des cription
4. Assembly and Disassembly Des cription 3. Turn the monitor over again to remove the back cover.
4. Dis connect LVDS , INVER TOR and FUNC TION cable. And then R emove S HIE LD_C OVER .
Picture Des cription
4. Assembly and Disassembly Des cription 5. R emove LC D P anel.
Picture Des cription
4. Assembly and Disassembly Des cription 6. R emove 2 screws.
7. R emove 3 screws and remove B racket S upport.
Picture Des cription
4. Assembly and Disassembly Des cription 8. R emoveM ain P C B from S HIE LD -C O VE R .
Picture Des cription
5. Troubleshooting
Notes:
1. Before troubleshooting, s etup the P C ’s dis play as below. - R es olution: 1920*1080 - H-frequency: 67.5 kHz - V-frequency: 60 Hz 2. If no picture appears, make sure the power cord is correctly connected. 3. C heck the following circuits . - No raster appears : Function P BA, M ain P B A - 5V develop but no screen: M ain P B A - 5V does not develop:IC 604 4. If you pus h and hold the "(E nter/S ource)" button for more than 5 seconds , the monitor automatically returns to the factory pres et.
5. Troubleshooting No power Symptom
: -. When turning on the Power button after connecting the power, the LED at the front of the monitor does not operate. Major Checkpoints: -. Check the IC604 power fuse and IC604 output power. -. Check the connections for the CN601 and the Main board. -. Check the main board LED Driver part and check also whether there is any abnormal output at other output terminals.
C N901
IC 602
IC 601
5. Troubleshooting No power C heck connection of Function Ass’y
W hen P in 2 , 3 , 4 of C N601 is 0V, D oes proper D C 12V appear at P in 1of C N601 s eparately?
NO
C hange another adapter or check power cord have already connect to AC power or not
YE S W hen P in 2 of IC 604 is D C 12V, D oes proper D C 5V appear at P in 3 of IC 604?
NO
C heck IC 604 and related circuit.
YE S W hen P in 4 of IC 601 is DC 5V, D oes proper DC 3.3V appear at P in 5 of IC 601?
NO
C heck IC 601 and related circuit.
YE S W hen P in 4 of IC 602 is D C 5V, D oes proper D C 1.8V appear at P in 5 of IC 602? YES
R eplace main board.
NO
C heck IC 602 and related circuit.
5. Troubleshooting The C ircuit diag ram when the power not turn on
5. Troubleshooting The C ircuit diag ram when the power not turn on
5. Troubleshooting No video (Analog ) Symptom : -. Though the LED power turns on, the screen is blank when connecting the VGA cable. Major Checkpoints: -. Check the D-SUB connection. -. Check whether the LVDS cable is connected correctly to the . -. Check whether the lamp connector of the is connected correctly to the Mainboard.
C N400
IC 300 X401
5. Troubleshooting No video (Analog ) C heck the s ignal cables and the connections .
Is X401 os cillating correctly?
1
NO
R eplace or check related circuit.
YE S 2
Do the R GB input appear at R 106 , R 110 , R 113,?
NO
C heck Input part
YE S D oes the Hs ync , 3 V sync input appear at pin 66,67 of IC 400, res pectively?
NO
C heck IC 400 and related circuit.
YE S D o output s ignals appear at pin 8 to 30 of C N400?
NO
C heck C N400 and related circuit.
YE S There are D C 5V at pin 1,2, and 3 of C N400? YE S R eplace LC D
NO C heck +5V_P anel and B L_E N s ignal.
5. Troubleshooting The C ircuit diag ram when no video (Analog )
5. Troubleshooting The C ircuit diag ram when no video (Analog )
5. Troubleshooting No video (HDMI) Symptom : -. Though the LED power turns on, the screen is blank when connecting the HDMI cable. Major Checkpoints: -. Check the HDMI connection. -. Check whether the LVDS cable is connected correctly to the . -. Check whether the lamp connector of the is connected correctly to the LED Driver.
C N400
IC 300 X401
5. Troubleshooting No video (HDM I) C heck the s ignal cables and the connections .
Is X401 os cillating correctly?
1
2
YE S Do the HDM I input appear at R 171 to R 176 and R 241 to R 246? YE S D o output s ignals appear at pin 8 to 30 of C N400?
NO
NO
NO
R eplace or check related circuit.
C heck Input part
C heck C N400 and related circuit.
YE S There are D C 5V at pin 1,2, and 3 of C N400?
NO C heck +5V_P anel and B L_E N s ignal.
YE S R eplace LC D
Caution : Make sure to disconnect the power before working on the Main board.
5. Troubleshooting The C ircuit diag ram when no video (HDM I)
5. Troubleshooting The C ircuit diag ram when no video (Analog )
5. Troubleshooting *. Service Function OSD
Information
Select Auto Select Pixel Shift Country
Scaler Vender Micom version Micom checksum
5. Troubleshooting *. To move next step. Press (+) key.
5. Troubleshooting *. To select off/on. Press (-) key.
5. Troubleshooting *. Replace After replacing the , select the item and then hold down the Menu button for five (5) seconds. The Ch. No. of the will increase. Then, on time and cycle number will be set to 0.
This number will be changed.
6. How to execute code 1. E nter the DDC EDID data when the AD board is replaced. 2. the DDC input prog ram and the DDC file that corres ponds to the model from the Quality Department of S ams ung and ins tall it us ing a jig as s hown in the fig ure below, and then enter the data.
C N703
6. How to execute code (DDC ) 1
3
2 4
1. C lick the Open icon 2. S elect Three E DID 3. S elect one DDC file , do it three times . 4.C lick Next
6. How to execute code (DDC ) 5: E nter the serial number and pres s the E nter key.
5
6. How to execute code (M C U code) 1. Options Checking. -. Manufacture : MSTAR -. Device Type :TSUM16xxx -. Communication Port : DSUB15 (Analog) -. External Memory : PMC25LV020
6. How to execute code (M C U code) 2. After click the 'LoadFile' button , choose MCU code.
3. Select the true S/W .
6. How to execute code (M C U code)
4. ‘Auto Program' button choice.
6. How to execute code (M C U code)
5. After the Program and completed, execute hard power off/on.
7. etc. (After replacing M ain PBA) You have to E D ID input (Analog and HD M I) Firmware install – M IC O M S /W input(use D D C manager) P C Auto C olor Adjust -.select language “E nglish” in O S D , then hold down E nter key for 5 seconds Factory R eset -.setting to C ontrast and B rightness ‘0’. -.P us h the E nter more than 5 seconds -.select R eset.