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DBTV2500 service manual
1
1
31
31
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31 pages, 1.09 Mb
SER
VICE MANU
AL
Design and specifications are subject to change without notice.
COLOR TELEVISION
RECEIVER
ORIGINAL
MFR’S VERSION B
DBTV2500
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