Thursday, November 30, 2017

Loewe - Auro 59502, Xemix 59501 - DVD player – SMPS circuit diagram (Schematic) and function details – using power control IC MC44603P

Mc44603 and STP3N60(FET) controlled SMPS power supply function descriptions, IC pin connections, circuit diagram [schematic] – working principles details – The power supply (SMPS) used with Loewe DVD player is selected for reference.
Current mode power supply
Function description of the current mode power supply
MOSFET 7125 is used as a power switch controlled by the controller IC 7110. When the switch is closed, energy is transferred from the mains into the transformer. This energy is then supplied to the load when the switch is opened. By control of the switched-on time, the energy transferred in each cycle is regulated so that the output voltages are independent of load or input voltage variations. The controlling device MC44603P is an integrated pulse width modulator. A clock signal initiates power pulses at a fixed frequency. The termination of each output pulse occurs when an analogue of the conductor current reaches a threshold established by the error signal. In this way the error signal actually controls the peak conductor current on cycle-by-cycle basis.
General description of MC44603
The MC44603 is an enhanced high performance controller that is specifically designed for Off-line and dc-to dc converter applications. This device has the unique ability of automatically changing operating modes if the converter output is overloaded., unloaded, or shorted. The MC44603 has several distinguishing features when compared to conventional SMPS controllers. These features consist of a fold back facility for
overload protection, a standby mode when the converter output is slightly loaded, and demagnetization detection for reduced switching stresses on transistor and diodes, and a high current totem pole output ideally suited for driving a power MOSFET. It can also be used for driving a bipolar transistor in low power converters. It is optimized to operate in discontinuous mode but can also operate in continuous mode. Its advanced design allows use in current mode or voltage mode control applications.
MC44603P [Block diagram & pin connections of MC44603]
Pin function descriptions
Operating description
The input voltage Vcc(pin 1) is monitored by a comparator with hysteresis, enabling the circuit at 14.5V and disabling the circuit below 7.5V. The error amplifier compares a voltage Vfb(pin 14) related to the output voltage of the power supply, with an internal 2.5V reference. The current sense comparator compares the output of the error amplifier with the switch current Isense (pin 7) of the power supply. The output of the current sense comparator resets a latch, which is set every cycle by the oscillator. The output stage is a totem pole, capable of driving a MOSFET directly.
Start-up sequence
t1: Charging the capacitor at Vcc
C2129 will be charged via R3123 and R3134, C2133 and C2111 via R3129. The output is switched off during t1.
t2: Charging of output capacitors
When the input voltage of the IC exceeds 14.5V, the circuit is enabled and starts to produce output pulses. The current consumption of the circuit increases to about 17mA, depending on the external loads of the IC. At first, the capacitor at the Vcc pin will discharge because the primary auxiliary voltage, coming from winding 7-9 is below the Vcc voltage. At some moment during t2, the primary auxiliary voltage reaches the same level as Vcc. The Vcc voltage is now determinate by this primary auxiliary voltage.
t3: regulation
The output voltage of the power supply is in regulation
t4: overload
When the output is shortened, the supply voltage of the circuit will decrease and after some time drop below the lower threshold voltage. At that moment, the output will be disabled and the process of charging the Vcc capacitor starts again. If the output is still shorted at the next t2 phase, the complete start-and stop sequence will repeat. The power supply comes in a hiccup mode.
Regulation
The oscillator voltage ramps up and down between V1 and V2.
The voltage at the current sense terminal is compared every cycle with the output of the error amplifier Vcomp. The output is switched off when the current sense level exceeds the level at the output of the error amplifier.
1. Time ON phase : A drain current will flow from the positive supply at pin 1 of the transformer through the transformer's primary winding, the MOSFET and Rsense to ground. As the positive voltage at pin 1 of the transformer is constant, the current will increase linearly and create a ramp dependent on the mains voltage and the inductance of the primary winding. A certain amount of energy is stored in the transformer in the form of a magnetic field. The polarity of the voltages at the secondary windings is such that the diodes are non-conducting.
2. TimeDIODE phase : When the MOSFET is switched off, energy is no longer supplied to the transformer. The inductance of the transformer now tries to maintain the current which has been flowing through it at a constant level. The polarity of the voltage from the transformer therefore becomes reversed. This results in a current flow through the transformer’s secondary winding via the diodes, electrolytic capacitors and the load. This current is also ramp shaped but decreasing.
3. TimeDEAD phase : when the stored energy has been supplied to the load, the current in the secondary windings stops flowing. At this point the drain voltage of the MOSFET will drop to the voltage of C2121 with a ringing caused by the Drain-Source capacitance with the primary inductance.
The oscillator will start a next cyclus which consists of the described three phases. The time of the different phases depends on the mains voltage and the load.
TimeDEAD is maximum at an input of 400VDC and minimum load, it will be zero at an input of 100VDC and overload.
Input circuit
The input circuit consists of a lightning protection circuit and an EMI filter.
The lightning protection comprises R3120, gas arrestor 1125 and R3124. The EMI filter is formed by C2120, L5120, C2125 and C2126. It prevents inflow of noises into the mains.
Primary rectifier/smoothing circuit
The AC input is rectified by Rectifier Bridge 6120 and smoothed into C2121. The voltage over C2121 is approximately 300V. It can vary from 100V to 390V.
Start circuit and Vcc supply
This circuit is formed by R3123, R3134, C2129, D6129, R3129, R3111, C2133 and C2111.  When the power plug is connected to the mains voltage, the stabilized voltage over D6129(24V) will charge C2133 via
R3129. When the voltage reaches 14.5V across C2111, the control circuit of IC7110 is turned on and the regulation starts.
During regulation, Vcc of IC7110 will be supplied by the rectified voltage from winding 7-9 via R3135, D6132 and C2133.
Control circuit
The control circuit exists of IC7110, C2102, 2104, 2107, 2109, 2110, R3102, 3103, 3104, 3107, 3108, 3109 and 3110. The frequency of the oscillator is defined by C2102 and R3110.
Power switch circuit
This circuit comprises MOSFET 7125, Rsense 3126, 3127 and 3128, R3125 , C2127, L5125, R3112 and R3113. R3125 is a pull-down resistor to remove static charges from the gate of the MOSFET.
Regulation circuit
The regulation circuit comprises opto-coupler 7200 which isolates the error signal from the control IC on the primary side and a reference component 7201. The TL431 (7201) can be represented by two components:
* a very stable and accurate reference diode
* a high gain amplifier
TL431 will conduct from cathode to anode when the reference is higher than the internal reference voltage of about 2.5V. If the reference voltage is lower, the cathode current is almost zero.
The cathode current flows through the LED of the opto-coupler.
The collector current of the opto-coupler flows through R3106, producing an error voltage, connected to voltage feedback pin 14 of IC7110.
Demagnetization
The auxiliary winding (7-9) voltage is used to detect magnetic saturation of the transformer core and connected via R3101 to pin 8 of IC7110. During the demagnetization phase, the output will be disabled.
Overvoltage protection circuit
This circuit consist of D6114, C2114, R3115 and R3116.
When the regulation circuit is interrupted due to an error in the control loop, the regulated output voltage will increase (overvoltage). This overvoltage is sensed on the primary winding 7-9.
When an overvoltage longer than 2.0 (s is detected, the output is disabled until VCC is removed and then re-applied. The power supply will come in a hiccup mode as long as the error in the control loop is present.
Secondary rectifier/smoothing circuit
There are 5 rectifier/smoothing circuits on the secondary side. Each voltage depends on the number of windings of the transformer.
The +5Vstby power supply is derived from the +12Vstby by voltage regulator 7233, C2233 and L5233.
The -5V voltage is regulated by voltage regulator 7259 and will be switched off via D6256, T7256 and T7255 during standby (control signal STAND BY is high). When jumper 4250 is mounted instead of this circuit, a supply voltage -8Vstby will be present at pin 9 of connector 0205.
The +5V power supply is derived from +6Vstby by the loader up circuit formed by MOSFET 7236, reference component 7237, R3236, R3237 and C2239. This voltage will be switched off during STAND BY via T7235.
The 3V3 power supply is regulated by the control loop (7201, 7200, 7110) of the switched mode PSU.
Loewe Auro 59502, Loewe Xemix 59501 - SMPS circuit diagram and PWB
Click on the pictures to magnify

Wednesday, November 29, 2017

NXP TDA9351/53/61/63 XXX SERIES – Color TV – Memory IC replacement, IC Pin voltages and functions, Service mode and adjustments, default data values, Full schematic and more….

TDA9351, TDA8370, TDA9353, OM8370 – IC default data and functional description.  Schematic (full): Used ICs – TDA9341, CD4052, AT24C08, AN7522, TDA2003, [BSC25 N0832 / BSC25 T1010A / BSC24 01N4014K Flyback Transformer], [D1651 / TT2190 – Horizontal Output Transistor], LA78040(Vertical scan output IC), [21-inch-2SC5287/ 29-inch-2AC5297 – SMPS switching transistor]
REPLACEMENT OF MEMORY IC
1. MEMORY IC.
This TV uses memory IC. In the memory IC are memorized data for correctly operating the video and deflection circuits.  When replacing memory IC, be sure to use IC written with the initial value of data.
2. PROCEDURE FOR REPLACING MEMORY IC
(1) Power off
Switch the power off and unplug the power cord from AC outlet.
(2) Replace IC
Be sure to use memory IC written with the initial data values.
(3) Power On
Plug the power cord into the AC outlet and switch the power On.
(4) Check and set system default value:
1) Press “MENU” key followed by digits '6''4''8' and '3'. then Press “TEST” key on the Remote control unit for factory used.
2) The red “M”or”factory” will be displayed on the screen, repeat this and it will changed as follow:
normal-M(factory)-BUS open-normal..
3) Press digital key, (Mkey) and corresponding on-screen display will be appeared.
4) Check the setting value of the SYSTEM default value of Table below. If the value is different, select items by [CH+]/[CH-] keys and set value by [VOL+]/[VOL-] keys.
5) Press “STANDBY” key again and return to the normal screen.
SERVICE ADJUSTMENT
B1 POWER SUPPLY
1. Receive normal colour bar signal.
2. Connect DC voltmeter to VD524- and isolated ground.
3. Adjust potentiometer in power unit to get the voltage as 110V ±1.0V for 21 inch hereinafter, FOCUS ADJUSTMENT
1. Receive a crosshatch signal.
2. While watching the screen, adjust the FOCUS VR to make the vertical and horizontal lines as fine and sharp as possible.
BUS CONTROL ADJUSTMENT
TDA9351/9353: To enter BUS control mode, Press “MENU” key followed by digits '6''4''8' and '3'. Then press digit Press “0” to “9“ key, (Mkey) and corresponding on-screen display will be appeared.
TDA8370: To enter BUS control mode, Press “MENU” key followed by digits '6''4''8' and '3'. then Press “TEST” key on the Remote control unit twice for factory used(or press digits '6''4''8' and '3' twice.). and then press digit Press “0” to “9“ key, (Mkey) and corresponding on-screen display will be appeared.
On TV screen “TEST” will be indicated, this means entered bus control mode.
And press following key, each function will be available.
Remote Hand Unit keys
Geometrical adjustment
MENU8 (9351)/servise 1(8370)
Receive PAL standard Complete pattern signal.
Adjustment steps
a) Adjust V. SLOPE, to the center horizontal line just appeare from half bottom shadow.
b) Adjust V. SIZE, to get 90% of vertical picture contents would be displayed on CRT.
c) Adjust V. SHIFT, the center horizontal line correspond to CRT vertical center.
d) Adjust H.SHIFT, to get the picture horizontal center correspond to CRT horizontal center.
Receive NTSC signal and repeat above.
AGC Adjustment.
MENU7 (9351)/servise 2(8370)
Receive 60dBμ(1mV)VH colour bar pattern signal,adjust AGC value(voltage from high to low),to noise reduce gradually and just disappeared point.
CRTcut off and white balance adjustment.
MENU9 (9351)/B W BALANCE(8370)
Receive white signal.
a) CRT cut off adjustment.
1. Select “SC”, then automatically vertical scan will be stopped.
2. Adjust SCREEN control on Flyback transformer to get the darkest single horizontal line (red, green, or blue, sometimes shows more yellow, more purple or more white).
b) White balance adjustment.
1. Select RD/BD menu.
2. Adjust RD/BD to get colour temperature as x=281, y=311
c) Sub-Brightness adjustment. (Use stair case signal)
1. Select SB menu.
2. Adjust SB to get the darkest step being cutoff.
DEFAULT DATA SETTING VALUES
AV OPTION:MENU1→AV CFG;
O =TV→AV;1=TV→AV1→AV2;2=TV→AV1→AV2→S-VIDEO;3=TV→AV1→AV2→S-VIDEO→YUV;
5 = TV→AV→S-VIDEO;6= TV→AV→S-VIDEO→YUV;7= TV→AV→YUV;8=TV→EURO;
9 =TV→AV→EURO
OM8370 – White balance
Note
1. The function of pin 20, 28, 29, 31, 32, 35 and 44 is dependent on the IC version (mono intercarrier FM demodulator /QSS IF amplifier and East-West output or not) and on some software control bits. The valid combinations are given in table 1. [Below]
2. the vertical guard function can be controlled via pin 49 or pin 50. the selection is made by means of the IVG bit in subaddress 2BH.
Note
1. When additional (external) selectivity is required for FM-PLL system pin 32 can be used as sound IF input.
This function is selected by means of SIF bit in subaddress 28H.
2. the reference output signal is only available for the CMB1/CMB0 setting of 0/1. for the other settings this pin is a switch output(see also 5 table 67). [below]
Test point waveforms
IC pin voltages
Full circuit diagram / Schematic and PWB
Click on the pictures to magnify

AOC F19L Wide screen 18.5 inch LCD monitor – AOC2436VW - schematic

715G2852-3-4 and 715G2852-2-11 power board schematic
Used ICs: AM9945N-T1-PF, TL4941DR, AZC199-04S, AT24C02BN-SH-T, TSUMU58EHL-LF-1, N24C04-WMN6TP, LD7575A PS, 2SK2645-54MR(FET)

Click on the pictures to zoom in
SMPS (Power and Backlight5 inverter board) schematic

AOC2236VWA – LCD monitor circuit diagram – 7155G2892 Power board schematic

Used ICs: AZC199-04S, AT24C02BN-SH-T, LD7576, FMA07N65GX, TSUMU58EHL-LF-1, MPS10091, P8008HV

715G2892-1-3 – SMPS Schematic
715G2892-power board inverter section schematic

Sunday, November 26, 2017

Samsung HT C553 – Region code setting, Initialization, SMPS and power amplifier circuit diagram - 5.1CH Digital Home Theater System

Buyer-Region Code Setting Method
The inserting method of Region Code after replacing the Main PBA
[Reference]
- When replacing the Main PBA and System Micom should be inserted the region code.
- The set will not work properly if you don't insert the region code.
- The region code is inserted by the remote control.
1. Press the “AUX” button on the remote control
2. Press the "TUNER MEMORY" button on the remote control upto 4~5 seconds.
3. After step (2), you can see “TEST” on the VFD.
4. When you see “TEST” on VFD, Insert number “4”, “6” to start Region Code setting mode.
5. After step (4), you can see “- -” on the VFD.
Insert the Region Code, of corresponding model with “0 ~ 9” buttons on the remote control.
6. After step (5), you can see “15 USA” on the VFD.
It means that currently System Micom program is installed by USA specification
7. Turn the Power off.
In case of System Micom and EEPROM problem, you can apply to this.
For example, during Updating program of System Micom, if Updating fail is happened, it is impossible to turn on the system from stand-by status.
The system will keep the stand-by status continuously, and the touch-key function will never work.
In this case, you have to change System Micom, and set up the Buyer Region code again.
In case of EEPROM, you don't need to care about it.
After set-up the Region code, System Micom will store the information of the region code to EEPROM automatically.
SMPS schematic [circuit diagram]
Power amplifier circuit diagram [schematic]
Click on the schematics to zoom in
DVD flash Initialization & Update
1. Prepare a DISC-CD or DVD or USB that contains ‘C550WWB.ROM’ file for Update.
2. Play the DISC or USB, then ‘Updating’ will appear on the screen, then Power will go out and on.
3. Then DISC-TRAY will open, then remove the DISC or USB, making the Unit as ‘NO DISC’ state.
4. Press ‘STOP’ button of Main Unit for more than 5 seconds, Display Indicator shows ‘INITIALIZE’ then Power goes out.
Checking out MICOM & MPEG flash Version
1. On Root state, Select ‘Set up’.
2. Press “Enter” and move Support.
3. Press “Enter”.
4. Check product information: “SW ver” on TV Display and “Micom SW Ver” on Front ASS’y VFD.
MICOM, MPEG Initialization & Update
Micom initial
In no Disc condition, press ‘STOP’ button of Main Unit more than 5 seconds, VF Display will happen to INIT and M int. Then Initialization complete.
 Micom Update
1. Prepare or Make a DISC-CD or DVD or USB that contains “C550WWM.SSP’ file for update.
2. Play the USB, then “updating” will appear on the screen, then Power will go out after showing ‘complete’ on the screen.
3. Press “Power” key and Press ‘Stop’ button of the remote control more than 5 seconds in No Disc.
SMPS Protection
The Condition of Power Protection Active.
1. Voltage of SMPS’s +, - PVDD (+30V, -30V) is higher or lower than Standards Normal Condition Voltage Range: PVDD (+30V, -30V): about +30V, -30V
2. Over-current occurs to FET (Over-output or Output short)
3. FET’s temperature exceed 150°C.
4. No supply voltage on GATE DRIVER
AMP Pre-Inspection relating to Power Protection
If you think, there are problems at the AMP PCB, you can check the pcb without disassemble the set.

Samsung HTZ210 – Initialization, update, full schematic with waveform display – Connector pin voltages - Digital Home Theater System

Samsung HT-Z210 DIGITAL HOME THEATER SYSTEM- Full circuit diagram, Initialization procedure, connector pin voltages
Used ICs: KA5Q1265RF (power control), ES7108S (HDMI), CS5345, LA73054, LC87F5CC8A, ES8391SCC, PS9829B, TAS5152 (power amp IC), BTEM39B2SB 9 (Bluetooth)  
 Always unplug the unit’s AC power cord from the AC power source before attempting to: (a) Remove or reinstall any component or assembly, (b) Disconnect an electrical plug or connector, (c) Connect a test component in parallel with an electrolytic capacitor.
 Some components are raised above the printed circuit board for safety. An insulation tube or tape is sometimes used. The internal wiring may be clamped to prevent contact with thermally hot components. Reinstall all such elements to their original position.
 After servicing, always check that the screws, components and wiring have been correctly reinstalled.  Make sure that the portion around the serviced part has not been damaged.
 Check the insulation between the blades of the AC plug and accessible conductive parts (examples: metal panels, input terminals and earphone jacks).
 Insulation Checking Procedure 
Disconnect the power cord from the AC source and turn the power switch ON.
Connect an insulation resistance meter (500V) to the blades of the AC plug.
The insulation resistance between each blade of the AC plug and accessible conductive parts (see above) should be greater than 1 megohm.
 Never defeat any of the B+ voltage interlocks. Do not apply AC power to the unit (or any of its assemblies) unless all solid-state heat sinks are correctly installed.
 Always connect a test instrument’s ground lead to the instrument chassis ground before connecting the positive lead; always remove the instrument’s ground lead last.
Operation of Power Block Protection Circuit.  The Condition of Power Protection Active.
1. Voltage of SMPS’s PVDD (+34.5V, J3) is higher or lower than Standards.  Normal Condition Voltage Range: PVDD (+34.5V, J3): about +34.5V
2. Over-current occurs to AMP IC. (Over-output or Output short)
3. AMP IC’s temperature exceeds 150°C.
4. No supply voltage on GATE DRIVER.
Power Protection
1. OTW: Active, IC’s inner temperature exceeds over 150°C.  (Under 2.7V, Protection Circuit wills Active)
2. TAS5352 3TH PIN: Shout down.  (Under 2.7V, Protection Circuit wills Active)
Initialization & Upgrade Methods
MICOM Initialization & Update
 MICOM Initial
In STANDBY condition, press “STOP” button of Main Unit more than 5 seconds, STANDBY RED LED will turn off and turn on again. Then Initialization complete.
MICOM Update
1. At Bottom side of Main Unit, Connecting 6 pin cable.
2. Wire to Update connector-look like an oval hole then update start.
 Required Equipment
Computer, Rom Writer, Connecting Cable, Update Program.
Update is available Only OTP type MICOM.
Circuit diagram (Schematic)
Connector pin voltages
DVD flash Initialization & Update
 Checking out MICOM & MPEG flash Version
1. Open DISC-TRAY, Press "MENU" button on the Remote Control.
2. Press "8", "9", "5" one by one, then press “ENTER”.
DVD flash Initialization & Update (firmware)
1. Prepare or Making DISC-CD or DVD or USB that contains HEX file for Update.
2. Play the DISC or USB, then ‘Updating’ will appear on the screen, then Power will go out and on.
3. Then DISC-TRAY will OPEN, then remove DISC or USB, making Unit ‘NO DISC’ state.
4. Press ‘STOP’ button of Main Unit more than 5 seconds, Display Indicator shows ‘INITIALIZE’ then Power goes out.
5. Initialization complete

Toshiba 50L4333D – How to enter service mode, hotel mode, How to update the software, power board schematic and more …

Toshiba 50L4333D(G), (F),50L4331D(G),50L4337D(G), (F)
Many electrical and mechanical parts in this chassis have special safety-related characteristics.
These characteristics are often passed unnoticed by a visual inspection and the protection afforded by them cannot necessarily be obtained by using replacement components rated for higher voltage, wattage, etc. Replacement parts which have these special safety characteristics are identified in this manual and its supplements; electrical components having such features are identified by the international hazard symbols on the schematic diagram and the parts list.
Before replacing any of these components, read the parts list in this manual carefully. The use of substitute replacement parts which do not have the same safety characteristics as specified
in the parts list may create electrical shock, fire, or other hazards.

ENTERING SERVICE MODE
Press the MUTE button once on Remote Control.
TV mode changes as follows. Un-Mute => Mute
Press button again and keep pressing, ((Sound Mute is canceled): While pressing the button, press “P”/ “->” button on TV control panel. (Enter Service Mode)
The following key entry during display of adjustment menu provides special functions.
TEST SIGNAL SELECTION
While displaying the adjustment menu, every pressing of “” button on the Remote Control changes the built-in test patterns on screen as described below.  When a pattern is changed at the time of an ATV display, it can display only for a moment.
While displaying the adjustment menu, press the “P-UP” button to cycle through the adjustment items.
ADJUSTING THE DATA
While displaying the adjustment menu, press the VOLUME +/– button to change the value of data in the range from 00H to FFH. The variable range depends on the adjusting item.
Press the [Exit] button on Remote.
ENTERING HOTEL MODE MENU
Hotel Mode Menu should be shown by the following operation.
Press any button on TV to activate Touch Sensor. White LED will light up.
DISPLAY OF HOTEL MODE MENU
- The Graphic Design and color of Hotel Mode Menu is the same as the User menu.  (Small differences which do not affect to operation will be acceptable)
- The language will follow the “Menu Language” setting in the menu.
OPERATING HOTEL MODE MENU
- To enable Hotel Mode, use the ◄/► arrow keys while “Hotel Mode” item is highlighted to select “On”.
Once Hotel Mode is on, the Hotel Mode settings will be enabled for adjusting.
- Use ▲ and ▼ buttons to access the hotel mode settings.
Use ◄/► buttons to change the settings.
- Press Exit when finished adjusting the settings.

Power board circuit diagram [Schematic]
MAIN BOARD EXCHANGE
When Main board is exchanged, the Application SW (Firrmware) and Model Setting need to be updated.
Updating of Software and Model Setting
1. Copy the Application SW (Firmware) file and the Model Setting file to the root of the USB mass storage device.
2. Unplug TV, and then Insert the USB mass storage device to the USB slot of the TV.
3. Plug TV. [Software updating starts].  (If Software updating does not start and the front LED lights red, then press [Power] key on Remote Control to start Software updating)
4. After updating complete, unplug TV and remove the USB mass storage device
5. Plug TV, then check the updating by using self check screen.
6. Update to the newest SW. [This model can be updated from aerial or network to the newest Software.]
Confirmation of Software updating
Check the TV Model and Model Info by using self check screen.
1. Press SETUP on Remote Control.
2. Select “Get Help” >> “System Information”
3. Press “3” “5” “7” “4”
Self check screen is displayed.

AOC 2251 TFT color LCD monitor – How to enter service mode – white balance adjustments

Main board part number: 715G4810M01BRA004L
Take care during handling the LCD module with back-light 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.)
BM215WF4-TJC1 is a Color Active Matrix Liquid Crystal Display with an integral Light Emitting Diode (LED) backlight system. The matrix employs a-Si Thin Film Transistor as the active element. It is a transmissive type display operating in the normally white mode. It has a 21.5 inch diagonally measured active display area with Full HD resolution (1080 vertical by 1920 horizontal pixel array) Each pixel is divided into Red, Green and Blue sub-pixels or dots which are arranged in vertical stripes. Gray scale or the brightness of the sub-pixel color is determined with a 8-bit gray scale signal for each dot, thus, presenting a palette of more than 16,7M colors with Advanced-FRC(Frame Rate Control). It has been designed to apply the interface method that enables low power, high speed, low EMI. FPD Link or compatible must be used as a LVDS(Low Voltage Differential Signaling) chip. It is intended to support applications where thin thickness, wide viewing angle, low power are critical factors and graphic
displays are important. In combination with the vertical arrangement of the sub-pixels, the BM215WF4-TJC1 characteristics provide an excellent flat panel display for office automation products such as monitors
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.)
White- Balance, Luminance Adjustment
Approximately 30 minutes should be allowed for warm up before proceeding white balance adjustment.
How to setting MEM channel you can reference to chroma 7120 user guide or simpl use “SC” key and “NEXT” Key to modify xyY 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 Warm (6500K): Warm color temp. Parameter is x = 313 ±30, y = 329 ±30
B. MEM.CHANNEL 4 Normal (7300K): Normal color temp. Parameter is x = 301 ±30, y = 317 ±30
C. MEM.CHANNEL 9 Cool (9300K): Cool color temp. Parameter is x = 283 ±30, y = 297 ±30
D. MEM.CHANNEL 10 (sRGB color): sRGB color temp. Parameter is x = 313 ±30, y = 329 ±30
Enter into the factory mode (Service mode]
Turn off the power, press two direction keys and turn the power on. Then press the “MENU” button. The factory OSD will appear. [Service mode]
4. 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
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 reachedthe 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±2
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)
3. The LCD-indicator on chroma 7120 will show x = 301 ±30, y = 317 ±30
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 reachedthe 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±2
Adjust Cool (9300K) color-temperature
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
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±2
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
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 reachedthe 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±2
E. Turn the Power-button off to quit from factory mode.