LG ACC55R - User Manual

WIRELESS DVD RECEIVER
SERVICE MANUAL
MODEL : LH-W551TB
LHS-55TBC, LHS-55TBS,
LHS-55TBW,
ACC55T, ACC55R
MODEL : LH-W551TB LHS-55TBC, LHS-55TBS, LHS-55TBW, ACC55T, ACC55R
SERVICE MANUAL

Summary

SECTION 1. GENERAL

Servicing Precautions

Notes for transport, storage, and repair of the pick-up unit, emphasizing care and avoiding damage.

ESD PRECAUTIONS

SPECIFICATIONS

SECTION 2. AUDIO PART

Audio Troubleshooting Guide

Flowchart to diagnose and resolve audio-related issues in the DVD receiver.

BLOCK DIAGRAM

POWER SCHEMATIC DIAGRAM_1

POWER SCHEMATIC DIAGRAM_2

MICOM SCHEMATIC DIAGRAM

FRONT SCHEMATIC DIAGRAM

DSP&AMP SCHEMATIC DIAGRAM

I;O SCHEMATIC DIAGRAM

MAIN;DVD P.C. BOARD DIAGRAM (TOP VIEW)

MAIN;DVD P.C. BOARD DIAGRAM (BOTTOM VIEW)

SMPS P.C. BOARD

AMP P.C. BOARD

SECTION 3. DVD & AMP PART

System Operation Flow

Step-by-step process flow from power on to disc playback initiation.

Test & debug flow

System operation flow (Continued)

AUDIO µ-COM Circuit(DVD & AMP)

DETAILS AND WAVEFORMS ON SYSTEM TEST AND DEBUGGING

ES6698 FD Main Clock Waveform (27 MHz)

Oscilloscope waveform showing the 27MHz main clock signal of the ES6698FD chip.

ES6698 FD Reset Signal Waveform

Oscilloscope waveform illustrating the high-active reset signal for the ES6698FD chip.

SDRAM CLOCK

ES6698 FD SDRAM Clock Waveform (27 MHz)

TRAY OPEN;CLOSE SIGNAL

Tray Open;Close Waveform

Tray Close Waveform

DISC TYPE JUDGEMENT WAVEFORMS

Disc Type Judgement Waveform (DVD)

Disc Type Judgement Waveform (DVD - Part 2)

FOCUS ON WAVEFORMS

Focus Waveform (DVD)

Focus Waveform (CD)

ES6698 FD VIDEO OUTPUT WAVEFORMS

ES6698 FD Composite Video Output Waveform

ES6698 FD Y-Signal Video Output Waveform

AUDIO OUTPUT FROM PWM IC

Audio L;R Output Waveform (PWM IC)

Audio Related Signals Waveform

DVD & AMP WAVEFORMS

DVD PART SCHEMATIC DIAGRAMS

DVD MPEG & DSP Schematic Diagram

Detailed circuit diagram for the DVD MPEG and DSP sections.

RF & SERVO SCHEMATIC DIAGRAM

USB CONTROLLER SCHEMATIC DIAGRAM

AMP SCHEMATIC DIAGRAM ( 5 TOOL )

AMP SCHEMATIC DIAGRAM ( 7 TOOL )

SECTION 4. EXPLODED VIEWS

DECK MECHANISM EXPLODED VIEW

SECTION 5. SPEAKER SECTION

Center Speaker Exploded View

MODEL: TRANSMITTER (ACC55 T)

MODEL: RECEIVER(ACC55 R)

< REFERENCE >

5-1. TRANSMITTER(TX) ELECTRICAL

Details regarding the electrical aspects of the transmitter module.

5-1-3. TX MODULE SCHEMATIC DIAGRAM_1

5-1-4. TX MODULE SCHEMATIC DIAGRAM_2

5-1-5. TX MODULE SCHEMATIC DIAGRAM_3

5-1-7. TX MODULE PRINTED CIRCUITED DIAGRAM(UPPER SIDE)

5-1-8. TX MODULE PRINTED CIRCUITED DIAGRAM(LOWER SIDE)

5-2. RECEIVER(RX) ELECTRICAL

5-2-1. RX MODULE BLOCK DIAGRAM

Block diagram illustrating the functional components of the receiver module.

5-2-2. RX MODULE SCHEMATIC DIAGRAM_1

5-2-3. RX MODULE SCHEMATIC DIAGRAM_2

5-2-4. RX MODULE SCHEMATIC DIAGRAM_3

5-2-5. RX AMP SCHEMATIC DIAGRAM_1

5-2-6. RX AMP SCHEMATIC DIAGRAM_2

5-2-7. RX AMP SCHEMATIC DIAGRAM_3

5-2-8. RX MODULE + AMP SCHEMATIC DIAGRAM

5-2-9. RX SMPS(POWER) SCHEMATIC DIAGRAM

5-2-10. RX MODULE PRINTED CIRCUITED DIAGRAM(UPPER SIDE)

5-2-11. RX MODULE PRINTED CIRCUITED DIAGRAM(LOWER SIDE)

5-2-12. AMP PRINTED CIRCUITED DIAGRAM(UPPER SIDE)

5-2-14. RX SMPS(POWER) PRINTED CIRCUITED DIAGRAM(COMPONENT SIDE)

LG ACC55R Specifications

General

Brand	LG
Model	ACC55R
Category	Receiver
Language	English