Service Manual MT1130C 13” Color Television VOLUME CHANNEL DOWN UP DOWN UP POWER 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 (37GDA86X) 5721-37CN030T (370KSB22(SYB)) 5721-026TT37N (A34JFQ90X) 5721-030ZT37N (A34JXV70X) DY501 4993-117 4993-052 4993-110 4993-124
( 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. Press the SHIFT + ADJ. MODE buttons on the Remote Control simultaneously to bring up the adjustment mode menu screens shown below. 2. From the menu screen, press the + or - button on the Remote Control to select the item to be adjusted. 3.
REMOTE CONTROL LAYOUT 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. 2.
IC, TRANSISTOR AND CRT COMPLEMENT INTEGRATED CIRCUITS IC101 TA87C-B6 IC102 CAT24CO4 IC301 TA1268N IC311 NJ7809FA Microcomputer EEPROM IF/Video/Chroma/Deflection Voltage Regulator IC501 AN5512 IC601 STR30130 IC671 NJ7805LD Vertical Deflection Output AVR Voltage Regulator and Reset Vertical Synchronizing Horizontal Synchronizing SD Signal Buffer SIF Signal Buffer Video Buffer Amplifier Video Out Service Mode Switching Red Color Driver Q452 2SC1473A(R) Q453 2SC1473A(R) Q551 2SC1473A(R) Q552 2SD 1 877 Q601
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.
SOUND IF ADJUSTMENT 1. 2. 3. 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 TP9. Adjust T203 so that the DC Digital Voltmeter reading is 4.0V. COLOR PURITY ADJUSTMENT For best results, it is recommended that the purity adjustment be made in the final receiver location.
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. If not properly positioned, convergence adjustment may be difficult, if not impossible. 1. Apply dot or crosshatch pattern from Dot/Bar Generator to receiver.
GREEN RED BLUE GREEN BLUE RED WEDGE B RED GREEN BLUE WEDGE C RED GREEN BLUE WEDGE A DEFLECTION YOKE REAR VIEW (A) GREEN BLUE RED BLUE GREEN RED RED BLUE GREEN WEDGE A DEFLECTION YOKE REAR VIEW (C) GREEN RED BLUE WEDGE B WEDGE B BLUE GREEN RED WEDGE C BLUE GREEN RED RED GREEN BLUE (B) DEFLECTION YOKE REAR VIEW BLUE RED GREEN (D) WEDGE A DEFLECTION YOKE REAR VIEW Fig.
HORIZONTAL PHASE ADJUSTMENT 1. 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). 2. Go to Adjustment Mode (2) by remote control. 3. Select H. PHASE from Adjustment Mode (2) menu screen. 4. Adjust H. PHASE level (by using + or - button on remote control) so that horizontal reading of test pattern becomes the same value.
TEST POINT - 11 -
VOLTAGE CHART ( all in volts ) OPERATION CONDITION : IC101 IC102 IC301 IC311 IC501 IC601 IC671 Q101 Q102 Q173 Q301 Q302 Q303 Q351 Q451 Q452 TERMINAL No Volt TERMINAL No Volt TERMINAL No Volt TERMINAL No Volt TERMINAL No Volt TERMINAL No Volt TERMINAL No Volt TERMINAL No Volt TERMINAL No Volt TERMINAL No Volt TERMINAL No Volt TERMINAL No Volt TERMINAL No Volt TERMINAL No Volt TERMINAL No Volt TERMINAL No Volt B Volt 0.1 -0.7 -0.1 3.9 1.5 1.6 0.0 2.5 2.3 1 4.9 11 0.0 21 0.0 31 2.1 41 0.7 1 0.0 1 0.
CHASSIS WAVEFORM - 13 -
SCHEMATIC DIAGRAM PCB2 CRT C130 100p 31 30 C556 10 /50V R555 15k 32 CONTRAST TINT C451 470p B C455 1000p /500V D681 1F4-E 26 R192 1k 27 28 3 9V 1 2 IN Q551 2SC1473A (R) R558 330 D607 1SS133 IC311 NJ7809FA VOLTAGE REGULATOR R559 330 WF-9 C557 680p /500V R804 10k D559 RD9R1ES2 C553 0.01 ZF C554 100 /16V Q552 2SD1877 ! ! TE 1 C803 2200p R802 10k D802 1SS133 Q801 2SC945 (P) R810 2.2 C805 0.1 C682 2200 /6.3V 6 C681 0.
