Durabrand DBTV2500 WAVEFORMS

61 0.5V 20µs/div

WAVEFORMS

0.5V 20µs/div

200mV 5ms/div

0.5V 2ms/div

200mV 20µs/div

9200mV 20µs/div

0.5V 5ms/div

11 1V 20µs/div

12 1V 20µs/div

1V 20µs/div13

820V 20µs/div3200mV 20µs/div

14 0.5V 5ms/div

15 20V 20µs/div

H-1

NOTE: The following waveforms were measured at the point of the corresponding

balloon number in the schematic diagram.

Contents

Main SERVICE MANUAL COLOR TELEVISION RECEIVER DBTV2500 Page 6. AVOID AN X-RAY1. KEEP THE NOTICES IMPORTANT 5. TAKE CARE TO DEAL WITH THE CATHODE-RAY TUBE HOW TO ORDER PARTS SERVICING NOTICES ON CHECKING 2. AVOID AN ELECTRIC SHOCK CONTENTS A2-1 Page Page Page Page 1. REMOVAL OF ANODE CAP DISASSEMBLY INSTRUCTIONS 2. REMOVAL OF DEFLECTION YOKE SERVICE MODE LIST CONFIRMATION OF USING HOURS INIT 00 83 0010 CRT ON NOTE FOR THE REPLACING OF MEMORY IC 1.BEFORE MAKING ELECTRICAL ADJUSTMENTS 2. BASIC ADJUSTMENTS Page 3. PURITY AND CONVERGENCE ADJUSTMENTS MAJOR COMPONENTS LOCATION GUIDE BLOCK DIAGRAM E-1 E-2 R515 J801 PRINTED CIRCUIT BOARDS MAIN/CRT (INSERTED PARTS) SOLDER SIDE 6.3A125V F-1 F-2 PRINTED CIRCUIT BOARDS MAIN/CRT (CHIP MOUNTED PARTS) SOLDER SIDE F-3 F-4 MICON/TUNER SCHEMATIC DIAGRAM R101 NXC0032-010010 NOTE: TUNER VIDEO SIGNAL CAUTION: DIGITAL TRANSISTOR CHROMA SCHEMATIC DIAGRAM G-3 G-4 CAUTION: DIGITAL TRANSISTOR 10 DEFLECTION/CRT SCHEMATIC DIAGRAM 2 G-5 27.0 19 POWER SCHEMATIC DIAGRAM G-8G-7 AUDIO SIGNAL SOUND SCHEMATIC DIAGRAM G-10G-9 MICON/TUNER WAVEFORMS CHROMA DEFLECTION/CRT SOUND WAVEFORMS MECHANICAL EXPLODED VIEW MECHANICAL REPLACEMENT PARTS LIST REF. NO. PART NO. DESCRIPTION J1-1 ELECTRICAL REPLACEMENT PARTS LIST REF. NO. PART NO. DESCRIPTION REF. NO. PART NO. DESCRIPTION RESISTORS DIODES J2-1 CAPACITORS DIODES ELECTRICAL REPLACEMENT PARTS LIST REF. NO. PART NO. DESCRIPTION MISCELLANEOUS J2-2