1. Manuals
  2. Brands
  3. Memorex Manuals
  4. TV
  5. MT-1192
  6. Service manual

Memorex MT1192 Service Manual

19” color television
Hide thumbs Also See for MT1192:
Table of Contents

Advertisement

Quick Links

Download this manual
Service Manual
MT1192
19" Color Television
THIS SERVICE MANUAL IS FOR MT1192 SUFFIX A , B ,
C, D AND E CRT USAGE
SUFFIX A
V451
5721- 015ST51N
(51GGD95X)
DY501
4993-118
SUFFIX B
SUFFIX C
5721- 51CN020T
5721-028TT48N
(510UEB22DY)
(A48LRH93X (W))
4993-060
4993-122
SUFFIX D
SUFFIX E
5721- 029NT48N
5721- 031ZT48N
(A48LSD095X)
(A48LGS30X)
4993-119
4993-123

Advertisement

Table of Contents
loading

Related Manuals for Memorex MT1192

Summary of Contents for Memorex MT1192

  • Page 1 Service Manual MT1192 19” Color Television THIS SERVICE MANUAL IS FOR MT1192 SUFFIX A , B , C, D AND E CRT USAGE SUFFIX A SUFFIX B SUFFIX C SUFFIX D SUFFIX E V451 5721- 015ST51N 5721- 51CN020T 5721-028TT48N 5721- 029NT48N...

  • Page 2: Specifications

    FEATURES On-screen graphics guide you through setup features and operations Automatic programming of channels allows easy selection of stations available in your viewing area Sleep timer programs the TV to turn itself off at a preset time One day timer programs the TV to come on once at a preset time Weekly timer programs the TV to come on at a preset time every day 26 button infrared remote control allows remote operation VHF/UHF/CATV tuning allows reception of standard broadcasts or cable TV channels...
  • Page 3 METHOD OF RECALL V-BLOCK PASS NUMBER The TV set with effective serial number as below is using IC101 5654-TA87C-B2. The caution as below is note of method how to recall the V-Block Pass Number by service remote control. CAUTION: In case user forgets the V-Block Pass Number, can recall using the Service Remote Control.

  • Page 4: Important Service Safety Information

    IMPORTANT SERVICE SAFETY INFORMATION Operation of receiver outside of cabinet or with back removed involves PROTECT YOUR CUSTOMER a shock hazard. Work on these models should only be performed by 1. Inspect all lead dress to make certain that leads are not pinched those who are thoroughly familiar with precautions necessary when or that hardware is not lodged between the chassis and other working on high voltage equipment.

  • Page 5: Adjustment Mode

    ( ADJUSTMENT BY REMOTE CONTROL ) ADJUSTMENT MODE The following adjustment items can be performed from menus by Remote Control as shown below : NOTE: The button combination and position on the Remote Control to select the adjustment items is given on page 4. 1.

  • Page 6: Remote Control Layout

    REMOTE CONTROL LAYOUT VIDEO V I D E O V I D E O - 4 -...
  • Page 7 IC, TRANSISTOR AND CRT COMPLEMENT INTEGRATED CIRCUITS IC101 TA87C-B2 Microcomputer (Please refer effective serial number at page 1-1.) IC101 TA87C-B6 Microcomputer (Please refer effective serial number at page 1-1.) IC102 CAT24CO4 EEPROM IC601 STR30130 IC301 TA1268N IF/Video/Chroma/Deflection IC671 NJ7805LD Voltage Regulator and Reset IC311 NJ7809FA Voltage Regulator IC701 TLP651...

  • Page 8: Sub Tint Adjustment

    INSTALLATION AND SERVICE INSTRUCTION CAUTION: Use an isolation transformer when performing any service on this chassis. SHUTDOWN CIRCUIT: When the high voltage rises, there are simultaneous voltage increase developed at termi- nal 5 of the Horizontal Output Transformer (T671) and applied to pin 29 of IC301. If excessive high voltage is produced, the increased voltage developed exceeds the rating of zener diode D552 causing the Horizontal Oscil- lator to stop functioning and the high voltage system to shut down.

  • Page 9: Color Purity Adjustment

    SOUND IF ADJUSTMENT Connect TV Test Pattern Generator (NTSC signal, 70dB u, channel 2) to EXT. Antenna Terminal (TE1) through TV Channel Signal Generator. (Standard modulation is 400Hz at 25kHz deviation for sound signal. Connect positive lead of DC Digital Voltmeter to TP7 and negative lead to TP4. Adjust T203 so that the DC Digital Voltmeter reading is 4.0V.
  • Page 10 STATIC CONVERGENCE ADJUSTMENT (Refer to Fig. 3 and 4) IMPORTANT: Before proceeding, make sure the location of the convergence magnet assembly on the neck of the CRT is as shown in Fig. 3. The rear edge of this assembly must be positioned 65 mm from the tip of the CRT base. If not properly positioned, convergence adjustment may be difficult, if not impossible.

  • Page 11: Focus Adjustment

    GREEN GREEN WEDGE B BLUE BLUE GREEN BLUE WEDGE C GREEN BLUE WEDGE A BLUE GREEN WEDGE A DEFLECTION YOKE REAR VIEW DEFLECTION YOKE REAR VIEW BLUE GREEN GREEN GREEN WEDGE B WEDGE B BLUE BLUE BLUE GREEN WEDGE C BLUE GREEN GREEN...
  • Page 12 HORIZONTAL PHASE ADJUSTMENT Connect TV Test pattern Generator (NTSC signal 70dB u, Monoscope Pattern) to EXT. Antenna Terminal (TE1) through TV Channel Generator. (NOTE: For steps 2, 3 and 4 below, refer to page 3 for Adjustment By Remote Control Method). Go to Adjustment Mode (2) by remote control.
  • Page 13 VIDEO IN ADJUSTMENT Connect Pattern Generator (1Vp-p, Color Bar Pattern) to video jack (J701). Connect positive lead of Oscilloscope probe 1 to R703 and negative lead of Oscilloscope to TP4 to detect video in signal. Connect positive lead of Oscilloscope probe 2 to TP10 and negative lead of Oscilloscope to TP4. Select Video Mode by remote control.

  • Page 14: Test Point

    TEST POINT - 12 -...

  • Page 15: Operation Condition

    VOLTAGE CHART (all in volts) OPERATION CONDITION: TINT, BRIGHT and COLOR CONTROL ......CENTER CONTRAST ..............MAXIMUM COLOR BAR SIGNAL IC101 TERMINAL No Volt TERMINAL No Volt TERMINAL No Volt TERMINAL No Volt TERMINAL No Volt IC102 TERMINAL No Volt IC301 TERMINAL No Volt...
  • Page 16 CHASSIS WAVEFORM WF-1 1.0Vp-p(H) WF-2 9.7Vp-p(H) WF-3 50.0Vp-p(V) WF-4 2.4Vp-p(V) WF-5 27.4Vp-p(H) WF-6 21.0Vp-p(H) WF-7 27.0Vp-p(V) WF-8 195.0Vp-p(H) WF-9 0.75Vp-p(H) NOTES: WAVEFORMS SHOWN WERE PRODUCED USING A PATTERN GENERETOR WITH ITS CONTROL SET TO PRODUCE A COLOR BAR SIGNAL AND A WIDEBAND OSCILLOSCOPE WITH LOW CAPACITY PROBE TO PREVENT LOADING.
  • Page 17 WIRING DIAGRAM - 15 -...

  • Page 18: Exploded View

    EXPLODED VIEW - 16 -...
  • Page 19 P.C. BOARDS PCB-1 NOTE MAIN P.C. BOARD X X X X MT1132/MT1133 X X X X MT1192 PCB-2 CRT SOCKET P.C. BOARD - 17 -...

  • Page 20: Schematic Diagram

    SCHEMATIC DIAGRAM UHF/VHF 75ohm - 18 -...

  • Page 21: General Unit Parts List

    Ref No. Part No. Description Ref No. Part No. Description GENERAL UNIT PARTS LIST MISCELLANEOUS 1532-26001 Window V451 5721-51CN020T CRT;(510UEB22(DY)) SUFFIX B 1662-79801 Push Button V451 5721-028TT48N CRT;(A48LRH93X) SUFFIX C 2132-412 Wedge Deflection Yoke;SPACER(x3) V451 5721-029NT48N CRT;(A48LSD095X) SUFFIX D 2133-334 Protector;BUTTON V451 5721-031ZT48N...
  • Page 22 Ref No. Part No. Description Ref No. Part No. Description CAPACITORS CAPACITORS C304 V5369-S04FZ103 0.01 uF +80%-20% 25V Semiconductor C561 5361-S46BK102 1000 pF +-10% 2 kV Ceramic; SUFFIX A C305 5345-105-50 1 uF +-20% 50V Electrolytic C561 5361-S46BK681 680 pF +-10% 2 kV Ceramic; SUFFIX C C306 5354-104K1HM 0.1 uF +-10% 50V Mylar...
  • Page 23 Ref No. Part No. Description Ref No. Part No. Description RESISTORS RESISTORS 5135-221J50P 220 ohm +-5% 1/2W Carbon R218 V5133-R010J102 1 k ohm +-5% 1/8W Carbon V5133-R010J103 10 k ohm +-5% 1/8W Carbon R220 V5133-R010J102 1 k ohm +-5% 1/8W Carbon V5133-R010J184 180 k ohm +-5% 1/8W Carbon R301...
  • Page 24 Ref No. Part No. Description Ref No. Part No. Description RESISTORS RESISTORS R509 5135-1R8J50P 1.8 ohm +-5% 1/2W Carbon R708 V5133-R010J153 15 k ohm +-5% 1/8W Carbon R510 V5133-R010J562 5.6 k ohm +-5% 1/8W Carbon R709 V5133-R010J154 150 k ohm +-5% 1/8W Carbon R515 5134-222J25P 2.2 k ohm +-5% 1/4W Carbon...
  • Page 25 Ref No. Part No. Description Ref No. Part No. Description TRANSISTORS DIODES Q801 5613-2785(F) Transistor, 2SC2785(F) D701 5632-1F4-E Diode, 1F4 Q802 5613-2120(O) Transistor, 2SC2120(O) D702 5636-1N4148M Diode,1N4148M Q803 5611-950(O) Transistor, 2SA950(O) D703 5636-1N4148M Diode,1N4148M D801 5636-1N4148M Diode,1N4148M INTEGRATED CIRCUITS D802 5636-1N4148M Diode,1N4148M COILS AND TRANSFORMERS...
  • Page 26 Ref No. Part No. Description Ref No. Part No. Description COILS AND TRANSFORMERS TRANSISTORS SF201 5679-01501450 Surface Acoustic Wave Filter Q451 5613-1573A(R) Transistor, 2SC1573A(R) 4363-01201 Antenna Coupler;(ANT) Q452 5613-1573A(R) Transistor, 2SC1573A(R) TH601 5192-01101 Posistor Q453 5613-1573A(R) Transistor, 2SC1573A(R) 6119-15501 VHF/UHF/CATV Tuner Assembly MISCELLANEOUS X101 5691-S2401802...

  • Page 27: Energy Star

    MT1192 19'' Color Television Owner's Manual ® As an NERGY Partner, MEMCORP has ® determined that this product meets the NERGY guidelines for energy efficiency.

  • Page 28: Power Connection

    BEFORE YOU OPERATE YOUR NEW TELEVISION To get the most from your new color television, read and follow this Owner's Manual carefully. INSTALLATION GUIDELINES Place your TV in a room with adequate ventilation. Keep your TV set away from sources of direct heat, such as heat registers or direct sunlight.
  • Page 29 FEATURES On-screen graphics guide you through setup features and operations Automatic programming of channels allows easy selection of stations available in your viewing area Sleep timer programs the TV to turn itself off at a preset time One day timer programs the TV to come on once at a preset time Weekly timer programs the TV to come on at a preset time every day 26-button infrared remote control allows remote operation VHF/UHF/CATV tuning allows reception of standard broadcasts or cable TV channels...

  • Page 30: Location Of Controls

    LOCATION OF CONTROLS POWER SWITCH CHANNEL (UP) BUTTON CHANNEL (DOWN) BUTTON VOLUME (UP) BUTTON VOLUME (DOWN) BUTTON REMOTE CONTROL SENSOR AUDIO IN (PUT) JACK VIDEO IN (PUT) JACK VHF / UHF EXT. ANT. JACK (REAR OF SET)

  • Page 31: Remote Control

    REMOTE CONTROL...

  • Page 33: Antenna Connections

    ANTENNA CONNECTIONS If you are using an indoor or outdoor antenna (antennas no included) follow the instructions below that correspond to your antenna system. If you are using a cable television service (CATV), refer to CATV connections. Combination VHF/UHF Antenna (Single 75 ohm cable or 300 ohm twin-lead wire) 7 5 ohm Connect...
  • Page 34 Some cable companies offer "premium pay" channels in which the signal is scrambled. Descrambling these signals for normal viewing requires the use of a descrambler device which is generally provided by the cable company. The illustrations below show how to connect these types of converter/descrambler devices with the TV's VHF antenna jack.
  • Page 35 NEVER CONNECT THE AC CORD PLUG TO OTHER THAN THE SPECIFIED VOLTAGE. input...

  • Page 36: Selecting A Language

    SELECTING A LANGUAGE The menu screen that appears when you press the MENU button can be programmed to appear in English, French, or Spanish. Follow the directions below to program the menu screen to appear in a language other than the one that is now on-screen when you press the MENU button.

  • Page 37: Setting The Clock

    SETTING THE CLOCK Press the MENU button twice to bring up the menu screen and select CLOCK SET CLOCK SET. TUE 1 : 35 AM EXIT CLOCK SET SUN - - : - - AM EXIT [MENU] MOVE [+] / [-] ADJUST Press the MENU button to go to the [MENU]...

  • Page 38: Programming Channels

    PROGRAMMING CHANNELS With automatic programming, the TV automatically places every channel you receive in its memory, allowing you to scan through those channels when you press the CHANNEL (Up/Down) buttons. With manual programming, you tell the TV what channels you want to scan through when you press the CHANNEL (Up/Down) buttons.

  • Page 39: Adding/Deleting Channels

    ADDING/DELETING CHANNELS Manual Programming Press the CHANNEL (Up or Down) Press the MENU button to bring up the button or Number buttons to select the menu screen. channel you want to add to or delete from the TV's memory. MENU TUE 1 : 35PM CLOCK SET PROGRAM TIMER...

  • Page 40: Setting The Timers

    SETTING THE TIMERS You can program your TV to turn on a specific channel at a preset time once (one day timer) or at the same time every day or every week (weekly timer). You also can program your TV to turn itself off after a specified amount of time (Sleep timer). ONE DAY TIMER One Day Timer ON TIME...
  • Page 41 Weekly Timer Use the + or – button to select the hour you want the timer to come on, Press the MENU button to bring up the then press the MENU button. Use the menu screen. + or – button to select the minute(s) you want the timer to come on, then MENU TUE 1 : 35PM...
  • Page 42 Sleep Timer Press the SLEEP button until the desired sleep time (10, 20, 30, 40, 50, Press the SLEEP button to bring up the 60, 70, 80 or 90 minutes) appears on- sleep timer screen. screen. The timer will begin counting down to zero, and the on-screen display will disappear.

  • Page 43: Adjusting The Picture

    ADJUSTING THE PICTURE Press the MENU button to bring up the Use the + or – button to adjust the menu screen. picture. The bar scale at the bottom of screen shows level MENU TUE 1 : 35PM adjustment. CLOCK SET Press the MENU button until the PROGRAM TIMER V-BLOCK SET...

  • Page 44: Closed Caption Mode

    3190 – P17 CLOSED CAPTION MODE Close caption mode allows you to read the Press the TV/CAP(tion)/Text button words of a broadcast on-screen while you until CAPTION or TEXT – whichever are hearing them. you want – appears in the lower right corner of the screen.

  • Page 45: Cable Tv Operation

    CABLE TV OPERATION Press the MENU button to bring up the main menu screen. Use the + or – button to highlight CH PROGRAM, then press the MENU button to select it. Press the MENU button until CABLE appears to the right of AIR/CABLE. On CATV (Cable Television) systems, programs are brought into the home on VHF channels 2–13, mid-band channels A–I, super band channels J–W, hyper band channels AA–CCC, ultra band channels W+30–W+84 and sub midband channels (5A, A5–A1).
  • Page 46 SETTING V-BLOCK V-Block allow users to program their TV set to automatically block an incoming program that contains a particular level of violence, sexual content and strong language . User can easily block program based on the age based ratings, the content based ratings, or a combination of the two.
  • Page 47 SETTING MPAA RATING (CHANGE RATING-1) Go to menu display item no. 6 of Press the + or - button until any rating SETTING V-BLOCK. appears beside MPAA RATING. V-BLOCK SET V-BLOCK SET V-BLOCK MPAA RATING PG-13 CHANGE RATING TV RATING TV-PG-DLSV CHANGE NUMBER 0000...

  • Page 48: Setting Mpaa Rating

    SETTING TV RATING-1 (CHANGE RATING-2) Press the + or - button until any rating Go to menu display item no. 2 of SETTING MPAA RATING. appears beside TV RATING. Press the MENU button. V-BLOCK SET Content-based Rating can be selected MPAA RATING PG-13 TV RATING...
  • Page 49 Table 1 indicates the only valid combinations of age and content based ratings with an "X" in the appropriate boxes. For example, TV-14-S,V is a valid rating, as is TV- 14. However, TV-14-FV is not a valid rating. Age-based Rating TV-Y TV-Y7 TV-G...
  • Page 50 For example : If user chooses to block any program with TV-PG-V rating, all entries in that column are automatically blocked as shown in table 2. At the same time it will cause no blocking of any program with D, L, S rating. Similarly, the same will happen if user chooses to block other rating such as D, L or S.

  • Page 51: Change Number

    CHANGING A PASS NUMBER Go to menu display item no. 4 of Use the number buttons [0] ~ [9] to SETTING V-BLOCK. input a pass number you want. V-BLOCK SET V-BLOCK SET V-BLOCK V-BLOCK CHANGE RATING CHANGE RATING CHANGE NUMBER 0000 CHANGE NUMBER 1234...
  • Page 52 SETTING OPTION RATING (CHANGE RATING-3) This setting is use to receive data service for Canadian English Language Rating System in accordance with EIA-744-A Standard. Use the + or - button to highlight the Go to menu display item no. 2 of rating you want to select.
  • Page 53 SETTING LOADING Go to menu display item no. 8 of Press the + or - button until ON SETTING OPTION RATING. appears beside LOADING then press the MENU button. V-BLOCK SET Press the MENU button to exit. MPAA RATING PG-13 TV RATING TV-PG-DLSV OPTION RATING ON...

  • Page 54: Before Requesting Service

    BEFORE REQUESTING SERVICE BEFORE REQUESTING SERVICE Before requesting service, check the following list of problems and solutions. You may be able to solve the problem yourself. PROBLEM SOLUTION No Power Make sure the unit is plugged in. Unplug the unit from the electrical outlet for 60 seconds. Then plug it in and turn it on again.

Table of Contents