Daewoo DVN-14F6N User Manual

Service Manual
TV/VCR IN ONE BOARD
CHASSIS : CN-140
NTSC-M SYSTEM
MODEL : DVN-14F6N
DVN-20F6N
DAEWOO ELECTRONICS CO., LTD.
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✔ Caution
: In this Manual, some parts can be changed for improving, their
performance without notice in the parts list. So, if you need the
latest parts information,please refer to PPL(Parts Price List) in
Service Information Center (http://svc.dwe.co.kr).

Daewoo DVN-14F6N Specifications

General

Brand	Daewoo
Model	DVN-14F6N
Category	TV VCR Combo
Language	English

Summary

Safety Check after Servicing

Safety Tests and Precautions

Details on insulation, dielectric strength, clearance, and leakage current tests.

IMPORTANT SERVICE NOTES

Service Precautions and Notices

X-RAY, general safety, product safety, and service notes for technicians.

GENERAL ADJUSTMENT

Key Adjustment Procedures

Guides for vertical height, focus, RF AGC, HV check, X-ray protection, and white balance.

CONVERGENCE ADJUSTMENTS

Center and Circumference Convergence

Procedures for adjusting screen center and circumference convergence.

LEADLESS(CHIP) INSTRUCTION

Leadless Component Handling

Steps for replacing leadless components: prep, removal, and installation.

CLEANING AND LUBRICATION OF DECK MECHANISM

Deck Mechanism Maintenance

MECHANICAL DISASSEMBLY(DECK)

General removal view

MECHANICAL ADJUSTMENTS

Tape Transport System Alignment

Procedures and flowchart for tape path alignment.

ELECTRICAL ADJUSTMENTS

Servo and Playback Adjustments

Procedures for servo X-path, P2/P3, and playback phase adjustments.

Audio Adjustments

Video Noise Reduction

Procedures for reducing Y and Color noise in the video signal.

Power circuit (Power supply circuit)

Power Circuit Overview and Operation

DEFLECTION CIRCUIT

u-COM CIRCUITS.

CHANNEL SELECTION AND MEMORY

SERVO/SYSCON CIRCUIT OPERATION

Servo/Syscon Circuit Operation Details

NORMAL AUDIO CIRCUIT OPERATION

VIDEO CIRCUIT OPERATION

Important ICs Operation

IY03 (LA7411) IC Details

IY02 (LC89960) IC Details

IY01 (LA7423A) IC Details

IN05(BA6209) IC Details

IN03 (MC4558C) IC Details

I503(TC4066BP) IC Details

I301(TA8445K) IC Details

IU01 (BA7790LS) IC Details

IN01 (Syscon : TMP91C642AN-3178) Pin Operation

TROUBLESHOOTING

Troubleshooting by Unit

Guides for power supply, vertical/horizontal, servo, video, and audio unit issues.

ELECTRICAL PARTS LIST

Component Coding and Parts Lists