MEMOREX MT-1137 HOW TO ENTER SERVICE MODE - - POWER - DEFLECTION - SCHEMATIC

HOW TO ENTER SERVICE MODE - MEMOREX MT-1137 - POWER - DEFLECTION - SCHEMATIC

SERVICE MODE
This unit provided with the following SERVICE MODES so you can repair, examine and adjust easily. 
To enter the Service Mode, press both set key and remote control key for more than 1 second.
KEY OPERATIONS IN SERVICE MODE

CLICK ON THE PICTURES TO ZOOM IN

CONFIRMATION OF HOURS USED

POWER ON total hours can be checked on the screen. Total hours are displayed in 16 system of notation.

Set the VOLUME to minimum.

Press both VOL. DOWN button on the set and Channel button (6)on the remote control for more than 1 second.

After the confirmation of using hours, turn off the power.

WHEN REPLACING EEPROM (MEMORY) IC

If a service repair is undertaken where it has been required to change the MEMORY IC, the following steps should be taken to ensure correct data settings while making reference to TABLE.

1. Enter DATA SET mode by setting VOLUME to minimum.
2. Press both VOL. DOWN button on the set and Channel button (6) on the remote control for more than 1 second.  ADDRESS and DATA should appear.
3. ADDRESS is now selected and should "blink". Using the SET + or - keys on the remote, step through the ADDRESS until required ADDRESS to be changed is reached.
4. Press ENTER to select DATA. When DATA is selected, it will "blink"
5. Again, step through the DATA using SET + or - until required DATA value has been selected.
6. Pressing ENTER will take you back to ADDRESS for further selection if necessary.
7. Repeat steps 3 to 6 until all data has been checked.

Check if the fixed values of the each adjustment items are set correctly referring below.

SMPS SCHEMATIC

DEFLECTION SCHEMATIC

SERVICE MODE AND ADJUSTMENTS - HAIER 21F7A - MEMOREX MT2024SM

SERVICE MODE AND ADJUSTMENTS - HAIER 21F7A - MEMOREX MT2024SM

SERVICE MODE

Specific operation: use remote controller

• Press “MUTE”--> “CALL” --> “-\--“ --> “CALL” -->UTE”  buttons in sequence to enter into factory mode. 
• Press [Program+] / [Program-] to select items and press [VOLUME+] / [VOLUME-] key , to  make data adjustment of  corresponding factory menus.
• Press “EXIT” key to exit factory mode.

Geometrical adjustment: Receive PAL standard complete pattern signal.

Adjustment steps：

a)  Adjust VSL, to the center horizontal line just appears from half  bottom shadow .

b)  Adjust VAM, to get 92% of  vertical picture contents would be displayed on CRT .

c)  Adjust VSH, the center horizontal line corresponds to CRT vertical center.

d)  Adjust SCL, to the linearity of  P card  field is in proper condition.

e)  Adjust HSH, to get the picture horizontal center correspond to CRT horizontal center.

Receive NTSC signal and repeat above adjustment.

AGC  Adjustment

Receive 60dBμ (1mV) VH color bar pattern signal.

Select TOP item.

Adjust value, to noise reduce gradually and just disappeared point.

CRT cut off and white balance adjustment

a)  CRT cut off  adjustment

1.  Select item VG2B, then adjust value to 32.

2.  PRESS “0” key , when  the screen  shows”VG2” adjust  the SCREEN control on Fly back  transformer [LOT] to make the screen show alternating f lashing characters of “INSIDE HIGH  INSIDE LOW”.

b)  White balance adjustment

1.  Receive a Black and White pattern.

2.  Adjust WRP , WRG , WRB items to get color temperature 9300K ±3 JND.

IC VOLTAGES

CLICK ON THE TABLE TO ENLARGE

MEMOREX MT2271 - (SERIES-A) - SCHEMATIC [CIRCUIT DIAGRAMS] - POWER - DEFLECTION - CHROMA - MICON - AUDIO - UNIVERSAL REMOTE CONTROL CODES

MEMOREX MT2271 - (Series-A) - SCHEMATIC [Circuit Diagrams] - Power - Deflection - Chroma - MICON - Audio - Universal Remote Control Codes

POWER

DEFLECTION

CHROMA

{Click on Schematics to Zoom In}

MICON

AUDIO

Universal Remote Control Set-up Codes

With GE universal remote: 0004 0009 0049 0051 0135 0031 0000 0268 0310 0001 {000, 001, 004, 006, 009, 031, 046, 049, 051, 082, 083, 135, 162, 268, 310 }

With RCA RCR 311W REMOTE: 1004, 1006, 1013, 1019, 1047, 1054, 1163, 1167, 1205, 1207, 1213, 1230

With RCA RCR 312W REMOTE: 10154, 10463, 10150, 10178, 10016

With 6 in 1 universal remote: 014,022,062,095,096

MEMOREX MT2271SM HOW TO ENTER SERVICE MODE - ADJUSTMENTS - MEMOREX MT2271SM (A-SERIES) - UNIVERSAL REMOTE CONTROL SET-UP CODES

HOW TO ENTER SERVICE MODE - ADJUSTMENTS - MEMOREX MT2271SM (A-Series) - Universal Remote Control Set-up Codes

ON-SCREEN DISPLAY ADJUSTMENT

• In the condition of NO indication on the screen.
• Press the VOL. DOWN button on the set and the Channel button (9) on the remote control for more than 1 second to appear the adjustment mode on the screen.

• Use the Channel UP/DOWN button or Channel button (0-9) on the remote control to select the options.
• Press the MENU button on the remote control to end the adjustments.

FUNCTIONS

RF-AGC DELAY

1. Receive an 60dB monoscope pattern.
2. Connect the digital voltmeter to TP001 (R606).
3. Activate the adjustment mode display and press the channel button (02) on the remote control to select "RF AGC DELAY".
4. Press the VOL. UP/DOWN button on the remote control until the digital voltmeter is 2.65 ±0.05V.

CUT-OFF

Adjust the unit to the following settings.

• R.DRIVE=73, B.DRIVE=61, R.BIAS=88, G.BIAS=74, B.BIAS=73, BRIGHTNESS=124, CONTRAST=100
• Place the set with Aging Test for more than 15 minutes.
• Activate the adjustment mode display and press the channel button (01) on the remote control to select "CUT OFF".
• Adjust the Screen Volume until a dim raster is obtained.

WHITE BALANCE

NOTE: Adjust after performing CUT OFF adjustment.

1. Place the set with Aging Test for more than 10 minutes.
2. Receive the color bar pattern.
3. Using the remote control set the brightness and contrast to normal position.
4. Activate the adjustment mode display and press the channel button (10) on the remote control to select "R.BIAS".
5. Using the VOL. UP/DOWN button on the remote control, adjust the R.BIAS.
6. Press the CH. UP/DOWN button on the remote control to select the "R.DRIVE", "B.DRIVE", "G.BIAS" or "B.BIAS".
7. Using the VOL. UP/DOWN button on the remote control, adjust the R.DRIVE, B.DRIVE, G.BIAS or B.BIAS.
8. Perform the above adjustments 6 and 7 until the white color is looked like a white.

SUB TINT / SUB COLOR

1. Receive the color bar pattern. (RF Input)
2. Connect the oscilloscope toTP023.
3. Activate the adjustment mode display and press the channel button (16) on the remote control to select "TINT".
4. Press the VOL. UP/DOWN button on the remote control until the section "A" becomes as straight line.
5. Connect the oscilloscope to TP- 022.
6. Press the CH DOWN button once to set to "COLOR" mode.
7. Press the VOL. UP/DOWN button on the remote control until the red color level is adjusted to 110% of the white level
8. Receive the color bar pattern. (Audio Video Input)
9. Press the TV/AV button on the remote control to set to the AV mode. Then perform the above adjustments.

Universal remote control set-up codes

With GE remote control: 1091 0004 0009 0049 0051 0135 0031 0000 0268 0310 0001 {000, 001, 004, 006, 009, 031, 046, 049, 051, 082, 083,

135, 162, 268, 310}

RCA RCR 311W: 1004, 1006, 1013, 1019, 1047, 1054, 1163, 1167, 1205, 1207, 1213, 1230

RCA RCR 312W: 10154, 10463, 10150, 10178, 10016

6-IN-1 Universal remote: 014,022,062,095,096

MEMOREX MT-1098 - POWER CONTROL [SMPS] - FA7610CP (POWER CONTROL)SCHEMATIC - [UNIVERSAL REMOTE CONTROL SETUP CODES]

MEMOREX MT-1098 - POWER CONTROL [SMPS] - FA7610CP (Power control)Schematic - [Universal Remote control Setup Codes]

POWER SCHEMATIC

Click on Schematic to Zoom In

Set-up codes

GE universal remote: 000, 001, 004, 006, 009, 031, 046, 049, 051, 082, 083, 135, 162, 268, 310 {0004 0009 0049 0051 0135 0031 0000 0268 0310 0001}

RCA RCR 311W: 1004, 1006, 1013, 1019, 1047, 1054, 1163, 1167, 1205, 1207, 1213, 1230

RCA RCR 312W: 10154, 10463, 10150, 10178, 10016

6 in 1 Super remote: 014,022,062,095,096

Comcast on demand remote control: 0154, 0250, 0463, 0150, 0178, 0179, 0016

Philips SRP-3004 remote control: 1800.

TV POWER SUPPLY SCHEMATIC (CIRCUIT DIAGRAM) _ MEMOREX MVD1402 FLAT SCREEN TV_ [PC817C_QHS-30184A]

TV POWER SUPPLY SCHEMATIC (Circuit Diagram) _ MEMOREX MVD1402 FLAT SCREEN TV_ [PC817C_QHS-30184A]

POWER SUPPLY_SCHEMATIC

CLICK ON THE SCHEMATIC TO ZOOM

STP 5MC50FP - BASED SMPS POWER SUPPLY [TV-MEMOREX MT1137] _ SCHEMATIC

STP 5MC50FP - BASED SMPS POWER SUPPLY [TV-MEMOREX MT1137] _ SCHEMATIC - (Circuit Diagram)

SMPS SCHEMATIC

CLICK ON THE SCHEMATIC TO MAGNIFY

NOTE: If FET is found defective, check and replace all the components [marked here], before replacing it with a new one.  Check all the solder terminals at power supply section circuit, for any loose soldering terminals.  It is advised to re-solder all the suspected solder terminals by applying a little more solder, without making any solder bridge short in between adjacent solder terminals.  Replace (Q501 – KTC3198 – Buffer) too, even if it shows no defect on testing.

DURABAND - DBVT1341 Series A & MEMOREX [SERVICE MODE]

TO ENTER SERVICE MODE


The unit provides with the following Service Modes, so you can repair, examine and adjust easily.

• Unplug the AC cord till lost all clock time.  
• Press and Hold "Vol-" button on the front panel of the TV & remote control unit simultaneously. 
• The both pressing of set key and the remote control key will not be possible if clock has been set.

CONFIRMATION OF HOURS USED

1. Set the Volume to Minimum.
2. While holding down Volume button on the front cabinet, press key [6] on the remote control simultaneously.  
3. After confirming of using hours, turn Off Power.

DISPLAY Window.

 INIT  00  83 => INITIAL SETTING CONTENT OF ,MEMORY IC.

POWER ON   0010 => POWER ON TOTAL HOURS.

PLAY/RECORD => PLAY/RECORD TOTAL HOURS.

 [16*16*16*thousand digit value] +  [ 16*16*hundreds digit value] + [16* tens digit value] + [ones digit value]

SET KEY => REMOTE KEY  =>  OPERATIONS.

Volume Minimum => 0 => Releasing of V-Chip password.

Vol min => 1 = Initialization of factory ( Do not use this for normal service).

Vol min => 2 => Horizontal position of OSD.

Vol min => 3 => Adjust the PG shifter automatically.

Vol min => 4 => Adjust the PG sifter manually.

Vol min => 5 => Adjusting the tracking to center position.

Vol min => 6 => Power On total hours and Play|Record total hours displayed on the screen.

Vol min => 8 => Writing of EEPROM initial data. (do not use this for normal service).

Vol min => 9 => Display of adjustment menu on screen.

METHOD  =>    OPERATIONS

Method:  Press the ATR button on the remote control for more than 2 seconds during PLAY.

Operation:  Adjusting the tracking to center position.

Method: make a short circuit between the test points of "Service" and Ground"

Operation:  The EOT | BOT | REEL SENSOR do not work at this moment.

 MEMOREX & DURABAND - DBTV 1341 _ SERVICE MODE & ADJUSTMENTS

TO ENTER SERVICE MODE

• Unplug AC till lost actual clock time.  
• Press & Hold [Volume ( - ) button on the 'TV' and on the remote control simultaneously.
• The both pressing of the set key remote control key will not possible if clock has been set.   Unplug the AC cord and allow at least 5 seconds before Power On

Set key	Remocon key	Operations
	0	Releasing V-Chip password
	1	Initialization of the Factory.  Do not use this for the normal servicing.
	2	Horizontal position adjustment of OSD
	3	Adjust the PG shifter automatically.
	4	Adjust the PG shifter manually.
Vol ( --) Min For all	5	Adjusting of tracking to center position.
	6	Power On Total Hours.
	8	Writing of EEPROM initial data.
	9	Display of the adjustment Menu on screen.

Method	Operations
Press the ATR button on the remote control for more than 2 seconds during ‘Play’.	Adjusting the Tracking to the center position.
Make the short circuit between the test point of Service and GND	The EOT | BOT | Reel sensor do not work at this moment.