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Durabrand DBTV1301 User Manual

Durabrand DBTV1301
69 pages
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SERVICE MANUAL
DBTV1301
Design and specifications are subject to change without notice.
COLOR TELEVISION RECEIVER
ORIGINAL
MFR'S VERSION B
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Durabrand DBTV1301 Specifications

General IconGeneral
BrandDurabrand
ModelDBTV1301
CategoryCRT TV
LanguageEnglish

Summary

ELECTRICAL REPLACEMENT PARTS LIST

SERVICING NOTICES ON CHECKING

Avoid Electric Shock

Be aware of high voltage parts and avoid electric shock.

Use Designated Parts

Use parts with specific safety characters for replacement.

Original Part Placement

Ensure parts and wiring are returned to original positions.

Cathode-Ray Tube Handling

Handle CRT with care to prevent injury.

X-Ray Safety Precautions

Proper repair of HV circuits prevents X-ray emission.

Post-Servicing Safety Check

Verify connections, insulation, and safety after repairs.

DISASSEMBLY INSTRUCTIONS

Removal of Anode Cap

Step-by-step guide for safely removing the anode cap.

Removal and Installation of Flat Package IC

Procedures for removing and installing flat package ICs.

SERVICE MODE LIST

WHEN REPLACING EEPROM (MEMORY) IC

ADDRESS and DATA Adjustment

Navigate and modify address/data for EEPROM replacement.

ELECTRICAL ADJUSTMENTS

Before Making Adjustments

Precautions and tool requirements before performing adjustments.

RF AGC DELAY Adjustment

Adjust RF AGC DELAY to a specific voltage level.

CUT OFF Adjustment

Adjust CUT OFF settings for optimal raster.

FOCUS Adjustment

Adjust Focus Volume for a distinct picture.

WHITE BALANCE Adjustment

Adjust R.BIAS, R.DRIVE, B.DRIVE, G.BIAS, B.BIAS for white balance.

SUB TINT/SUB COLOR Adjustment

Adjust tint and color center for proper color reproduction.

HORIZONTAL PHASE Adjustment

Adjust H.PHAS to minimize scan shift.

VERTICAL SIZE Adjustment

Adjust V.SIZE to set overscan within ±10%.

PURITY AND CONVERGENCE ADJUSTMENTS

Static Convergence (Rough Adjustment)

Perform initial static convergence using magnets and yoke.

Purity Adjustment

Adjust purity magnets and deflection yoke for correct color centering.

Static Convergence

Fine-tune static convergence using 4 and 6 pole magnets.

Dynamic Convergence

Adjust dynamic convergence by moving the deflection yoke and inserting wedges.

BLOCK DIAGRAM

MICON/TUNER SCHEMATIC DIAGRAM

CHROMA SCHEMATIC DIAGRAM

POWER SCHEMATIC DIAGRAM

DEFLECTION/CRT SCHEMATIC DIAGRAM

SOUND/AV SCHEMATIC DIAGRAM

WAVEFORMS

MECHANICAL EXPLODED VIEW

MECHANICAL REPLACEMENT PARTS LIST

ELECTRICAL REPLACEMENT PARTS LIST

Resistors and Diodes

Lists replacement resistor and diode part numbers.

ICs and Transistors

Lists replacement ICs and transistor part numbers.

Capacitors, Coils, and Transformers

Lists replacement capacitor, coil, and transformer part numbers.

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