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Instruction Manual
Service Manual
MT1130C
13" Color Television
THIS SERVICE MANUAL IS FOR MT1130C SUFFIX A , B ,
C AND D CRT USAGE
SUFFIX A
V451
5721-014ST37N
(37GDA86X)
DY501
4993-117
VOLUME
DOWN UP
REMOTE SENSOR
SUFFIX B
SUFFIX C
5721-37CN030T
5721-026TT37N
(370KSB22(SYB))
(A34JFQ90X)
4993-052
4993-110
CHANNEL
POWER
DOWN UP
SUFFIX D
5721-030ZT37N
(A34JXV70X)
4993-124
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Table of Contents
Related Manuals for Memorex MT1130C
Summary of Contents for Memorex MT1130C
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Page 1: Service Manual
MT1130C 13” Color Television CHANNEL POWER VOLUME DOWN UP DOWN UP REMOTE SENSOR THIS SERVICE MANUAL IS FOR MT1130C SUFFIX A , B , C AND D CRT USAGE SUFFIX A SUFFIX B SUFFIX C SUFFIX D V451 5721-014ST37N 5721-37CN030T... -
Page 2: 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 3: Remote Control Layout
REMOTE CONTROL LAYOUT VIDEO VIDEO METHOD OF RECALL V-BLOCK PASS NUMBER If user forgets the V-Block Pass Number, call recall by the Service Remote Control or User Remote Control. 1. If use the Service Remote Control, at the Pass Number entry menu, while holding down [SHIFT] button and press the [Q.REV] button repeatedly four times. - Page 4 IC, TRANSISTOR AND CRT COMPLEMENT INTEGRATED CIRCUITS IC101 TA87C-B6 Microcomputer IC501 AN5512 Vertical Deflection Output IC102 CAT24CO4 EEPROM IC601 STR30130 IC301 TA1268N IF/Video/Chroma/Deflection IC671 NJ7805LD Voltage Regulator and Reset IC311 NJ7809FA Voltage Regulator TRANSISTORS Q101 DTC143ZS Vertical Synchronizing Q452 2SC1473A(R) Blue Color Driver Q102 2SC945(P) Horizontal Synchronizing...
- Page 5 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 terminal 6 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 Oscillator to stop functioning and the high voltage system to shut down.
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Page 6: 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. 2. Connect positive lead of DC Digital Voltmeter to TP7 and negative lead to TP9. 3. - Page 7 STATIC CONVERGENCE ADJUSTMENT ( Refer to Figure 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 Figure 3. The rear edge of this assembly must be positioned 65 mm from the tip of the CRT base.
- Page 8 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 9 HORIZONTAL PHASE ADJUSTMENT Connect TV Test pattern Generator (NTSC signal 70dB u, Monoscope Pattern) to Antenna T erminal (TE) 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.
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Page 10: Test Point
TEST POINT - 11 -... - Page 11 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...
- Page 12 CHASSIS WAVEFORM - 13 -...
- Page 13 SCHEMATIC DIAGRAM PCB1 MAIN 4551-2011601D PCB2 CRT TP16 R142 1/4W VOUT R456 RX101 2.7k 1/4W REMOTE SU451 C180 SENSOR R454 R455 V451 100p B TP13 2.7k 1/4W 2.7k 1/4W TP15 TP14 Q451 Q452 Q453 R146 1 k R128 1473A (R) 1473A (R) 1473A (R) 2.2k...