LG ACC-55-R, ACC-55-T, LHW-551-TB Service 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

1-1

[CONTENTS]

SECTION 1. GENERAL

• SERVICING PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

• ESD PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4

• SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-5

SECTION 2. AUDIO PART

• AUDIO TROUBLESHOOTING GUIDE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

• WIRING DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4

• BLOCK DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6

• SCHEMATIC DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8

• PRINTED CIRCUIT DIARGAMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-22

SECTION 3. DVD & AMP PART

• ELECTRICAL TROUBLESHOOTING GUIDE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-1

• DVD PART SCHEMATIC DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-22

SECTION 4. EXPLODED VIEWS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-1

SECTION 5. SPEAKER PART . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-1

SECTION 6. REPLACEMENT PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-1

1-2

SERVICING PRECAUTIONS

NOTES REGARDING HANDLING OF THE PICK-UP

1. Notes for transport and storage

1) The pick-up should always be left in its conductive bag until immediately prior to use.

2) The pick-up should never be subjected to external pressure or impact.

2. Repair notes

1) The pick-up incorporates a strong magnet, and so should never be brought close to magnetic materials.

2) The pick-up should always be handled correctly and carefully, taking care to avoid external pressure and
impact. If it is subjected to strong pressure or impact, the result may be an operational malfunction and/or
damage to the printed-circuit board.

3) Each and every pick-up is already individually adjusted to a high degree of precision, and for that reason
the adjustment point and installation screws should absolutely never be touched.

4) Laser beams may damage the eyes!
Absolutely never permit laser beams to enter the eyes!
Also NEVER switch ON the power to the laser output part (lens, etc.) of the pick-up if it is damaged.

5) Cleaning the lens surface
If there is dust on the lens surface, the dust should be cleaned away by using an air bush (such as used
for camera lens). The lens is held by a delicate spring. When cleaning the lens surface, therefore, a cot­ton swab should be used, taking care not to distort this.

6) Never attempt to disassemble the pick-up.
Spring by excess pressure. If the lens is extremely dirty, apply isopropyl alcohol to the cotton swab.
(Do not use any other liquid cleaners, because they will damage the lens.) Take care not to use too much
of this alcohol on the swab, and do not allow the alcohol to get inside the pick-up.

Storage in conductive bag

Drop impact

NEVER look directly at the laser beam, and don’t let
contact fingers or other exposed skin.

Magnet

How to hold the pick-up

Conductive Sheet

Cotton swab

Pressure

Pressure

SECTION 1. GENERAL

1-3

NOTES REGARDING COMPACT DISC PLAYER REPAIRS

1. Preparations

1) Compact disc players incorporate a great many ICs as well as the pick-up (laser diode). These components
are sensitive to, and easily affected by, static electricity. If such static electricity is high voltage, components
can be damaged, and for that reason components should be handled with care.

2) The pick-up is composed of many optical components and other high-precision components. Care must be
taken, therefore, to avoid repair or storage where the temperature of humidity is high, where strong magnet­ism is present, or where there is excessive dust.

2. Notes for repair

1) Before replacing a component part, first disconnect the power supply lead wire from the unit

2) All equipment, measuring instruments and tools must be grounded.

3) The workbench should be covered with a conductive sheet and grounded.
When removing the laser pick-up from its conductive bag, do not place the pick-up on the bag. (This is
because there is the possibility of damage by static electricity.)

4) To prevent AC leakage, the metal part of the soldering iron should be grounded.

5) Workers should be grounded by an armband (1M Ω)

6) Care should be taken not to permit the laser pick-up to come in contact with clothing, in order to prevent
static electricity changes in the clothing to escape from the armband.

7) The laser beam from the pick-up should NEVER be directly facing the eyes or bare skin.

Resistor
(1 Mohm)

Conductive
Sheet

Resistor
(1 Mohm)

Armband

1-4

ESD PRECAUTIONS

Electrostatically Sensitive Devices (ESD)

Some semiconductor (solid state) devices can be damaged easily by static electricity. Such components
commonly are called Electrostatically Sensitive Devices (ESD). Examples of typical ESD devices are integrated
circuits and some field-effect transistors and semiconductor chip components. The following techniques should
be used to help reduce the incidence of component damage caused by static electricity.

1. Immediately before handling any semiconductor component or semiconductor-equipped assembly, drain off

any electrostatic charge on your body by touching a known earth ground. Alternatively, obtain and wear a
commercially available discharging wrist strap device, which should be removed for potential shock reasons
prior to applying power to the unit under test.

2. After removing an electrical assembly equipped with ESD devices, place the assembly on a conductive surface

such as aluminum foil, to prevent electrostatic charge buildup or exposure of the assembly.

3. Use only a grounded-tip soldering iron to solder or unsolder ESD devices.

4. Use only an anti-static solder removal device. Some solder removal devices not classified as "anti-static" can

generate electrical charges sufficient to damage ESD devices.

5. Do not use freon-propelled chemicals. These can generate electrical charges sufficient to damage ESD

devices.

6. Do not remove a replacement ESD device from its protective package until immediately before you are

ready to install it. (Most replacement ESD devices are packaged with leads electrically shorted together by
conductive foam, aluminum foil or comparable conductive materials).

7. Immediately before removing the protective material from the leads of a replacement ESD device, touch the

protective material to the chassis or circuit assembly into which the device will by installed.

CAUTION : BE SURE NO POWER IS APPLIED TO THE CHASSIS OR CIRCUIT, AND OBSERVE ALL OTHER

SAFETY PRECAUTIONS.

8. Minimize bodily motions when handing unpackaged replacement ESD devices. (Otherwise harmless motion

such as the brushing together of your clothes fabric or the lifting of your foot from a carpeted floor can gener­ate static electricity sufficient to damage an ESD device).

CAUTION. GRAPHIC SYMBOLS

THE LIGHTNING FLASH WITH APROWHEAD SYMBOL. WITHIN AN EQUILATERAL TRIANGLE, IS
INTENDED TO ALERT THE SERVICE PERSONNEL TO THE PRESENCE OF UNINSULATED
“DANGEROUS VOLTAGE” THAT MAY BE OF SUFFICIENT MAGNITUDE TO CONSTITUTE ARISK OF
ELECTRIC SHOCK.

THE EXCLAMATION POINTWITHIN AN EQUILATERAL TRIANGLE IS INTENDED TO ALERT THE
SERVICE PERSONNEL TO THE PRESENCE OF IMPORTANT SAFETY INFORMATION IN SERVICE
LITERATURE.

1-5

GENERAL

Power supply Refer to main label
Power consumption Refer to main label
Weight 3.9 kg
External dimensions (W x H x D) 430 x 54 x 350 mm
Operating conditions Temperature: 5°C to 35°C, Operation status: Horizontal
Operating humidity 5% to 85%

CD/DVD

Laser Semiconductor laser, wavelength 650 nm
Signal system PAL 625/50, NTSC 525/60
Frequency response (audio) 200 Hz to 20 kHz
Signal-to-noise ratio (audio) More than 75 dB (1 kHz, NOP, 20 kHz LPF/A-Filter)
Dynamic range (audio) More than 70 dB
Harmonic distortion (audio) 0.5 % (1 kHz, at 12W position) (20 kHz LPF/A-Filter)

VIDEO

Video input 1.0 V (p-p), 75 Ω, negative sync., RCA jack x 1
Video output 1.0 V (p-p), 75 Ω, negative sync., RCA jack x 1
S-video output (Y) 1.0 V (p-p), 75 Ω, negative sync., Mini DIN 4-pin x 1

(C) 0.3 V (p-p), 75 Ω

Component Video output (Y) 1.0 V (p-p), 75 Ω, negative sync., RCA jack x 1

(Pb)/(Pr) 0.7 V (p-p), 75 Ω, RCA jack x 1

TUNER
FM

Tuning Range 87.5 - 108.0 MHz or 65.0 - 74.0 MHz, 87.5 - 108.0 MHz
Intermediate Frequency 10.7 MHz
Signal-to Noise Ratio 60 dB (Mono)
Frequency Response 140 - 10,000 Hz

AM [MW]

Tuning Range 522 - 1,620 kHz or 520 - 1,720 kHz
Intermediate Frequency 450 kHz

AMPLIFIER

Stereo mode 70W + 70W (8Ω at 1 kHz, THD 10 %)
Surround mode Front: 70W + 70W (THD 10 %)

Center*: 70W
Surround*: 70W + 70W (8Ω at 1 kHz, THD 10 %)

Subwoofer*: 150W (4Ω at 30 Hz, THD 10 %)
Input AV IN
Outputs S-VIDEO, MONITOR, PHONES: (32 Ω, 10.V)

WIRELESS TX (ACC25T) Transmission Output : 2.4GHz, Power Supply : DC 7V
WIRELESS RX (ACC25R) Reception Output : 2.4GHz, Amplifier : 70W + 70W (8Ω, THD 0.1 %)

SPEAKERS

Front Speaker Center Speaker Subwoofer Wireless Speaker
Type 1 Way 2 Speaker 1 Way 2 Speaker 1 Way 1 Speaker 1 Way 2 Speaker
Impedance 8 Ω 8 Ω 4 Ω 8 Ω
Frequency Response

150 - 20000 Hz 150 - 20000 Hz 40 - 1500 Hz 150 - 20000 Hz
Sound Pressure Level

86 dB/W (1m) 86 dB/W (1m) 82 dB/W (1m) 86 dB/W (1m)
Rated Input Power 70W 70W 150W 70W
Max. Input Power 140W 140W 300W 140W
Net Dimensions 280x1200x280 mm 500x83x90 mm 195x402x360 mm 280x1200x280 mm
Net Weight 2.38 kg 0.71 kg 6.2 kg 2.38 kg

(* Depending on the sound mode

settings and the source, there
may be no sound output.)

SPECIFICATIONS

2-1

SECTION 2. AUDIO PART

AUDIO TROUBLESHOOTING GUIDE

1. POWER SUPPLY CIRCUIT

2-2

2. FRONT CIRCUIT (1/2)

PIN3
PIN4
PIN9

CN902 CN902

: -32.4 VKK
: -27.5 FL­: -23.7 FL+

: +5.0

2-3

3. FRONT CIRCUIT (2/2)

2-4 2-5

WIRING DIAGRAM

WIRELESS

PN801

CN350

OPTICALINSCART

JACK

MAIN PCB

PDM01 PDM03

23PIN 11PIN 24PIN 23PIN

OPTION

SW

AV1,2

COMPONENT

MONITOR OUT

S-VIDEO OUT

PN103

TUNER

PN104

SPEAKER TERMINAL

30PIN

PN302

AMP PCB

PN105

PN902 PN303

14PIN 14PIN

5PIN

6PIN

MIC

JACK

MIC

JACK

CN001

NOTES) Warning

NOTES) Parts that are shaded are critical
NOTES) With respect to risk of fire or
NOTES) electricial shock.

MIC&USB PCB

USB JACK

MD

PN005

PN002

PN001

SMPS PCB

VFD

FRONT

FRONT

PCB

PCB

H/P JACK

2-6 2-7

BLOCK DIAGRAM

Optical

Tuner

AV1

AV2

(option)

Monitor Out

S-AV

Component

Scart

(option)

USB Port

MIC

Wireless

L
R
V

L
R
V

G
B
R

L
R
L
R
G
B
R
8
16
V

MIC1
MIC2

7V

Tuner-L/R

AV1-L/R
AV2-L/R

SCART-L/R

SCART-ID
SCART-FB

(A)(T_CE,T_DO,T_DI,T_CLK,T_RDS_DATA,T_RDS,CLK)

Audio s/w

Bu 4052

CTL-A/B
AV1-CVBS
AV2-CVBS
Monitor out
SCART-CVBS out

C
Y

ALC

BA 3308

MIC1_DET(A)
MIC2_DET(A)

(B)

Slide

S/W

VIDEO-SW

Mixing

+

P

(R) ,Pr(R)

b

(A)

Video S/W
NJM 2279
out
(CVBS-S/W)

DVD-CVBS

Y
Y(G)

USB Controller

CS 5340

ADC

/RST-AD

ADC

CS 5340

Fs = 48kHz

Fx

/RST-AD

SW1, SW2,MUTE1

(A)

Video

S/W

NJM2279

(Y-S/W)

ALRCK,ABCK
MCLK,AMDAT

(A)

SPDI
F

AD-DATA
AD-BCK
AD-LRCK

(A)

C

YY

DVD BLOCK

CVBS

MUTE

TR Mute

Mic Volume : OSD CTL

SS

T

DIT

CS 8406

(slave)

8406_SDI,8406_SDO
8406_CLK,8406_CE
8406_RST,8406_INT

(A)

SPDIF

(ES 6698)

OPTION

12.288MHz

LRCK
BCK

ADAT 0,1,2,3
(FL/R,RL/R,C/SW)

AUDIO MICOM

LC876B48

(PIN MAP )

FRONT

PS 9818

(PWM)

(A) HP_DET

STA510A

AMP IC

AM

(A)

FAN1_CTL
FAN2_CTL

PDN
TH_W

FAN1

FAN2

H/P

OPTION

2-8 2-9

SCHEMATIC DIAGRAMS

1. POWER SCHEMATIC DIAGRAM_1

A B C D E F G H I J K L M N O P Q R ST

NOTES) Warning

NOTES) Parts that are shaded are critical
NOTES) With respect to risk of fire or
NOTES) electricial shock.

2-10 2-11

2. POWER SCHEMATIC DIAGRAM_2

A B C D E F G H I J K L M N O P Q R ST

2-12 2-13

3. MICOM SCHEMATIC DIAGRAM

A B C D E F G H I J K L M N O P Q R ST

2-14 2-15

4. FRONT SCHEMATIC DIAGRAM

A B C D E F G H I J K L M N O P Q R ST

2-16 2-17

5. DSP& SCHEMATIC DIAGRAM

A B C D E F G H I J K L M N O P Q R ST

2-18 2-19

6. I/O SCHEMATIC DIAGRAM

A B C D E F G H I J K L M N O P Q R ST

2-20 2-21

7. MAIN MIC SCHEMATIC DIAGRAM

A B C D E F G H I J K L M N O P Q R ST

2-22 2-23

PRINTED CIRCUIT BOARD DIAGRAMS

1. MAIN/DVD P.C. BOARD DIAGRAM ( TOP VIEW )

2-24 2-25

2. MAIN/DVD P.C. BOARD DIAGRAM ( BOTTOM VIEW )

6870R7505AC

2-26 2-27

3. FRONT MIC P.C. BOARD

6870R7507AA

2-28 2-29

4. SMPS P.C. BOARD

LOCATION GUIDE

NOTES) Warning

NOTES) Parts that are shaded are critical
NOTES) With respect to risk of fire or
NOTES) electricial shock.

5. MIC P.C. BOARD

( 5 TOOL )

LOCATION GUIDE

NOTES) Warning

NOTES) Parts that are shaded are critical
NOTES) With respect to risk of fire or
NOTES) electricial shock.

( 7 TOOL )

( TOP VIEW )

( BOTTOM VIEW )

2-30 2-31

6. AMP P.C. BOARD

( TOP VIEW ) ( BOTTOM VIEW )

3-1

ELECTRICAL TROUBLESHOOTING GUIDE

1. System operation flow

SECTION 3. DVD & AMP PART

Power On

1. 8082 initializes SERVO, DSP & RISC registers

2. Write RISC code to SDRAM

3. Reset RISC

Show LOGO

Yes

SLED Moves to Inner Position

1. Judge whether have disc and disc type

2. Jump to related disc reading procedure

Tray Closed?

No

Tray Close to Closed position

SLED at Inner

Side?

No

Recieve

OPEN/ CLOSE

Key?

Yes

No

1. Execute Pressed Key & IR Key

2. Systemoperati on Routi ne Loop

1. Stop Playback & Open Tray

2. Display tray open message & LOGO

No

Receive

CLOSE Key?

Yes

3-2

2. Test & debug flow

TEST

Check the

AC Vol tage

Power PCBA (110V

or 220V)

Yes

Switch on the Power PCBA

Is the

DC Voltage

outputs OK? (-44V, -22V,

-26.5V, ±12V, 5.6V, 3.3V,
5V, 7V, 8V)

Yes

Are 3.3V and 5V DC

outputs normal on main

PCBA?

Yes

Update
FLASH

successfully?

No

No

No

No

Check the POWER PART

Check the POWER PART

Check the regulators or diode.

1. Check 27MHz system clock.

2. Check systemreset circuit.

3. Check FLASH R/Wenable signal PRD,
RWR.

4. Check FLASH Memory related circuit.

Yes

Replace FLASH

A

3-3

A

, 115.

3-4

B

1.

2.

3-5

C

ES6698.

ES6698.

ES6698.

3-6

D

3-7

E

PWM IC

received correct data

stream?

Normal

PWM IC out?(IC301)

Check Digital Amp circuit
(IC701, IC702, IC703, IC704)

Check connection between
IC300 ABCK, ALRCK,
ASDAT

Check the related circuit of
PWM.(Check Audio out
Pins52, 54, 55, 59,62, 68

3-8

3. AUDIO µ-COM Circuit(DVD & AMP)

YES

Does CD/DVD appear
at FLD?

Does AV1, TV Audio, AV1 opt.
and FM 87.5 appear at FLD

OK

Does Loading appear
at FLD?

POWER ON

YES NO

YES

Does no Disc or Time
appear at FLD?

NO YES

NO

NO

NO

NO

NO

NO

Does it appear DVD Error
at FLD?

Refer to SMPS.

Refer to oscillator Circuit.

Check IC101 Reset
Waveform.

Check 3.3V line.

Check Power section
Circuit.

NO

Check power part of Main
B/D.

Check oscillator of X101.

Check if IC101 Pin80
is high.

Check if IC101 Pin32, 51,
80 are high(5V).

Check if IC101 Pin96
is high.

Replace IC101.

NO

NO

Check if DVD an Audio
Micom Insert is OK.

Check Power.

YES

Check DVD Module.

YES

Check SMPS.

YES YES

YES

YES

YES

YES

YES

3-9

DETAILS AND WAVEFORMS ON SYSTEM TEST AND DEBUGGING

1. SYSTEM 27MHz CLOCK,RESET,FLASH R/W SIGNAL

1) ES6698FD main clock is at 27MHz(X501)

3.8V, 27MHz

FIG 1-1

2) ES6698FD reset is high active.

PWR_CTL(SYSTEM µ-COM)
IC501 PIN83)

5.2VA

Power Cord in

M_RESET(IC501 PIN 207)

URST(IC501 PIN 188)

FIG 1-2

3-10

2. SDRAM CLOCK

1) ES6698FD main clock is at 27MHz(X501)

(IC503 PIN 38)

DCLK = 93MHz, Vp-p=2.2, Vmax=2.7V

FIG 2-1

3) Flash R/W enable signal during download(Downloading)

FRD(IC500 PIN 28)

FWR(IC500 PIN 11)

FIG 1-4

3-11

3. TRAY OPEN/CLOSE SIGNAL

1) Tray open/close waveform

OPEN((PDM03 PIN7)

CLOSE(PDM03 PIN8)
TROPEN(IC402 PIN 4)

TRCLOSE(IC402 PIN 5)

FIG 3-1

2) Tray close waveform

OPEN((PDM03 PIN7)
CLOSE(PDM03 PIN8)

TROPEN(IC402 PIN 4)

TRCLOSE(IC402 PIN 5)

FIG 3-2

3-12

4. SLED CONTROL RELATED SIGNAL (NO DISC CONDITION)

FMSO(2.0V/1.4V/1.0V)
(IC501 PIN 19)

STBY(5V) – (IC401 PIN 50)

SL+(4.7V/3.6V/1.9V)
(IC404 PIN 12)

SL-(5.3V/3.7V/2.5V)
(IC404 PIN 11)

FIG 4-1

3) Tray open waveform

OPEN(PDM03 PIN7)

CLOSE(PDM03 PIN8)
TROPEN(IC402 PIN 4)

TRCLOSE(IC402 PIN 5)

FIG 3-3

3-13

5. LENS CONTROL RELATED SIGNAL(NO DISC CONDITION)

FOSO(1.5V/1.4V/1.3V)
(IC501 PIN 12)

F+(4.0V/3.6V/3.2V)
(IC404 PIN 14)

F-(4.0V/3.6V/3.2V)
(IC404 PIN 13)

FIG 5-1

6. LASER POWER CONTROL RELATED SIGNAL(NO DISC CONDITION)

MDI1(0V/180mV)
(IC401 PIN 26)

LD01(5.0V//3.5V)
IC401 PIN 20)

LD02(5.0V/3.6V)
(IC401 PIN 21)

FIG 6-1

3-14

F+(IC404 PIN 14)

FE(IC401 PIN 40)

RFL(IC401 PIN 19)

FIG 7-2 (DVD)

7. DISC TYPE JUDGEMENT WAVEFORMS

F+(IC404 PIN 14)

FE(IC401 PIN 40)

RFL(IC401 PIN 19)

FIG 7-1 (DVD)

3-15

F+(IC404 PIN 14)

FE(IC401 PIN 40)

RFL(IC401 PIN 19)

FIG 7-3 (CD)

F+(IC404 PIN 14)

FE(IC401 PIN 40)

RFL(IC401 PIN 19)

FIG 7-4 (CD)

3-16

FE(IC401 PIN 40)

FOSO(IC501 PIN12)

F+(IC404 PIN 14)

F-(IC404 PIN 13)

FIG 8-2 (CD)

8. FOCUS ON WAVEFORMS

FE(IC401 PIN 40)

FOSO(IC501 PIN12)
F+(IC404 PIN 14)

F-(IC404 PIN 13)

FIG 8-1 (DVD)

3-17

9. SPINDLE CONTROL WAVEFORMS (NO DISC CONDITION)

DMSO(1.4V/1.8V)
(IC501 PIN 18)

SP-(3.6V/2.4V)
(IC404 PIN 18)

SP+(3.6V/4.8V)
(IC404 PIN 17)

FIG 9-1

10. TRACKING CONTROL RELATED SIGNAL(System checking)

TE(IC401 PIN 39)

TRSO(IC501 PIN 13)

T-(IC404 PIN 16)

T+(IC404 PIN 15)

FIG 10-1(DVD)

3-18

11. RF WAVEFORM

RFOP(2.3V/1.1V)
(IC401 PIN 55)

RFON(0.8V/2.0V)
(IC401 PIN 57)

FIG 11-1

TE(IC401 PIN 39)

TRSO(IC501 PIN 13)

T-(IC404 PIN 16)

T+(IC404 PIN 15)

FIG 10-2(CD)

3-19

12. ES6698FD VIDEO OUTPUT WAVEFORMS

1) Full colorbar signal(COMPOSIT)

(IC501 PIN 110)

FIG 12-1

2) Y

(IC501 PIN 113)

FIG 12-2

3-20

1) Audio L/R

FIG 13-1

13. AUDIO OUTPUT FROM PWM IC

(IC301 PIN 68, 49)

2) Audio related Signal

ASDAT0(IC501 PIN 117)

ABCK(IC501 PIN 123)

ALRCK(IC501 PIN 116)

ASDATA3

FIG 13-2

3-21

1)

• R310 → TP301
or
R311 TP302

2)

• R320 → TP311
or
R321 TP312

3)

• R312 → TP303
or
R313 TP304

4)

• R318 → TP307
or
R319 TP308

5)

• R314 → TP305
or
R315 TP304

6)

• R318 → TP309
or
R319 TP310

14. DVD & AMP WAVEFORMS

A B C D E F G H I J K L M N O P Q R ST

3-22 3-23

DVD PART SCHEMATIC DIAGRAMS

1. DVD MPEG & DSP SCHEMATIC DIAGRAM

A B C D E F G H I J K L M N O P Q R ST

3-24 3-25

2. RF & SERVO SCHEMATIC DIAGRAM

3. FRONT MIC SCHEMATIC DIAGRAM(KARAOKE MODEL ONLY)

A B C D E F G H I J K L M N O P Q R ST

3-26 3-27

3-28 3-29

4. USB CONTROLLER SCHEMATIC DIAGRAM

A B C D E F G H I J K L M N O P Q R ST

5. AMP SCHEMATIC DIAGRAM ( 5TOOL )

A B C D E F G H I J K L M N O P Q R ST

3-30 3-31

6. AMP SCHEMATIC DIAGRAM ( 7TOOL )

A B C D E F G H I J K L M N O P Q R ST

3-32 3-33

• CABINET AND MAIN FRAME SECTION

4-1 4-2

SECTION 4. EXPLODED VIEWS

OPTIONAL PART

NOTES) THE EXCLAMATION POINT WITHIN AN

EQUILATERAL TRIANGLE IS INTENDED
TO ALERT THE SERVICE PERSONNEL
TO THE PRESENCE OF IMPORTANT
SAFETY INFORMATION IN SERVICE
LITERATURE.

452

JACK OPTION

A53

274

A50

452

283

A26

275

463

A46

463

463

463

250

463

463

A43

279

261

261

463

465

A45

A47

300

A44

261

• DECK MECHANISM EXPLODED VIEW

4-3 4-4

012

019

A26

013

017

439

014

435

015

018

015B

015A

012

440

016

030

001

002

A01

003

A02

020

432

012A

026

A03

036

439

025

010

024

431

435

012A

021

430

035A

035

4-5

• Packing Accessory Section

827

MICRO PHONE

826

FILTER(CIRC)

808

BATTERY

900

REMOCON

803

PACKING, CASING

OPTIONAL PART

811

PLUG ASS'Y 1WAY(YELLOW)

824

ANTENNA LOOP(AM)

825

ANTENNA (FM)

INSTRUCTION ASSEMBLY

801

828

AC ADAPTOR

PACKING, CASING

803

804

BAG

802

BOX

5-1

SECTION 5. SPEAKER SECTION

• CENTER SPEAKER

MODEL : LHS-55TBC

A70

752

750

751

754

OPTIONAL
PARTS
LHS-75TBC
XHS-75TBS
ONLY

752

752

755

753

758

757

751

5-2

• FRONT/REAR SPEAKER

MODEL : LHS-55TBS

A80

854

A80A

863

862

850

851

OPTIONAL
PARTS
LHS-75TBS
XHS-75TBS
ONLY

852

853

855

857

856

850

858

851

859

860

861

864

865

867

866

5-3

• SUB WOOFER SPEAKER

MODEL : LHS-55TBW

953

954

952

951

A90

956

950

5-4

• MODEL : TRANSMITTER (ACC55T)

A300

380

(With LENS)

382

A80M

A80S

384

480

5-5

• MODEL : RECEIVER(ACC55R)

394

398

A330

390

*NSP

492

A81A

A81M

392

*NSP

A81S

396

491

5-6

< REFERENCE >

5-1. TRANSMITTER(TX) ELECTRICAL

5-1-1. TX MODULE BLOCK DIAGRAM

IA8

(BASEBAND IC)

3.3V

2

I C

ANT

TX ON

uPG2214

RX ON

RF IN(CH)

(SWITCH IC)

RX

AL2212

TX

(RF IC)

(EEPROM)

AT24C64AN

2

I C

OSC(44MHz)

RF OUT

(FILTER)

MFG22B2450

2.8V 3.3V

3.3V
POWER POWER

5-7

5-1-2. TX SUB BLOCK DIAGRAM

TX MODULE

LED SWITCH

AUDIO IN

POWER - 7V REGULATOR - 5V

OP AMP

AUDIO

DVD

5-8

5-1-3. TX MODULE SCHEMATIC DIAGRAM_1

5-9

5-1-4. TX MODULE SCHEMATIC DIAGRAM_2

5-10

5-1-5. TX MODULE SCHEMATIC DIAGRAM_3

5-11

5-1-6. TX SUB SCHEMATIC DIAGRAM

5-12

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

5-13

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

5-14

5-1-9. TX PRINTED CIRCUITED DIAGRAM

5-15

5-2. RECEIVER(RX) ELECTRICAL

5-2-1. RX MODULE BLOCK DIAGRAM

SMPS

I2S(AUDIO OUT) POWER CONTROL

SWITCH

LED AMP

IA8

(BASEBAND IC)

RX

I2C

POWER

3.3V

(EEPROM)

AT24C64AN

ANT

RF IN

(RF IC)

AL2212

2.8V I2C 3.3V

POWER OSC(44MHz)

5-16

5-2-2. RX MODULE SCHEMATIC DIAGRAM_1

5-17

5-2-3. RX MODULE SCHEMATIC DIAGRAM_2

5-18

5-2-4. RX MODULE SCHEMATIC DIAGRAM_3

5-19

+

5-2-5. RX AMP SCHEMATIC DIAGRAM_1

CHB-

L1 15UH

1 2

RADIAL13.5DIA

1 2

1234567891011

123456789

RADIAL13.5DIA

L3 15UH

R5100000-1210

5%

C17

OUTPUT

C19

R

100NF

X7

C18

680PF

NPO

1000PF

R
X7

NPO

C41

NC

C27

1000PF

ChassisG nd

FILM

C23

470NF

R
X7

6.2

5%

EIA1210

R8

R7100000-1210

C26

6.2

R

100NF

X7

5%

EIA1210

5%

C21

100NF

R6

CHA+

NPO

R

C28

100NF

X7

L4 15UH

1 2

RADIAL13.5DIA

R

C25

680PF

X7

12

J1

101112

1000PF

NPO

C13

100NF

5%

R
X7

C15

CHB+

L2 15UH

1 2

RADIAL13.5DIA

R

680PF

X7

NPO

C40

NC

C2

1000PF

NPO

R

C6

100NF

X7

R

R2

6.2
EIA1210

C1

100NF

X7

R1100000-1210

5%

C12

ChassisG nd

FILM

C8

470NF

R

C11

100NF

X7

R3

6.2

5%

5%

EIA1210

R

C9

680PF

X7

R4100000-1210

R

VCC2N

VREG2

50VDC

PGND2N

INRB

DDX2B

C14 100NF

PGND2P

INRA

313233

DDX2A

VCC2P

INLB

DDX1B

X7

OUTPR

INLA

DDX1A

OUTPR

TWARN

282930

TWARN

OUTNL

FAULT

27

FAULT

C16 1uF

OUTNL

TRI-STATE

25

26

E

TRISTAT

EAPD

VCC1N

PWRDN

+

50VDC

C10 1uF

C5 1000UF

4V
+3

2345678910111213141516171819

OUTNR

OUTNR

U1

VSIG GNDREF

36 1

VSIG

35

X7R

EIA0805

C42

100NF

34

100NF

X7R

VREG2

C43

EIA0805

VREG1

50VDC

PGND1N

CONFIG

24

4V
+3

23

3.3V

C20 100NF

PGND1P

VL

22

VCC1P

VREG1

C44

R
X7

OUTPL

VREG1

21

C45 100NF

100NF

20

EIA0805
X7R

X7R

EIA0805

OUTPL

GNDR1

NC

GNDREF

DDX-2102

HeatSink

03

ChassisG nd

R9

220

0000-06

5-20

5-2-6. RX AMP SCHEMATIC DIAGRAM_2

+34V+3.3V

123

4

J2

R11

10K

03

0000-06

C39

10nF

3

U3

1

89

KIA-7029

SOT-

Out

GND

2

Vcc

4

3

U2

TO-252-

BA33BC0FP

POWER

C35

22uF

10V

EIA3528_B

+

C36

Y5V

100NF

EIA0603

Vout

3

D

NC

GN

2

Vin

1

C38

100UF

16V

100UF-ELEC-16V-RADIAL

+

+3.3V

+3.3V

3

R13NS0000-060

03

R12NS0000-06

LRCLK

SDI_12

MCLK

BICLK

03

R24NS0000-06

03

R23NS0000-06

03

R22NS0000-06

3

R21NS0000-060

SDA

RESET

SCL

+5V

C37

Y5V

100NF

EIA0603

**Note: R20 can be

05

R2000000-08

replaced w ith an

EIA0805 ferr ite bead

if needed fo r EMI**

SDATA

123456789

J3

LRCK

MCLK

BICLK

SCL

SDA RESET

RESET

10

5-21

5-2-7. RX AMP SCHEMATIC DIAGRAM_3

PWDN

C48

100NF

E

FAULT

26

FAULT

DDX1B

TRISTAT

24

25

TRISTATE

OCDETECT

DDX2A

DDX2B

TWARN

27

28

GND

TWARN

U4

SA

DDX1A

123456789

EAPD

23

EAPD

RESET

22

DDX3A

SCL

21

DDX3B

SDA

20

Y5V

+3.3V

C47

22UF

10VDC

+

C46

100NF

Y5V

17

18

19

VDD

VDD

PWDN

GND

PLL_FILTER

XTI

1011121314 15

EIA0603

EIA3528_B

EIA0603

16

GND

BICKI

GNDA

VDDA

BICLK

SDI_12 LRCKI

LRCLK

DDX-2001

VDDA

C31

+

C29

Y5V

100NF

22UF

10VDC

GNDA

EIA0603

EIA3528_A

EIA0603

100PF

NPO

EIA0603

EIA0603

1200PF

X7R

NPO

C33

C32

C34

220PF

3

R10

3.40K

0000-060

PLL

DDX1A

DDX1B

DDX2A

DDX2B

RESET

SCL

SDA

PLL

MCLK

GNDA

VDDA

SDI_12

12

L5

EIA0805

600 ohm@100mhz

C30

+3.3V

12

L6

600 ohm@100mhz

Y5V

100NF

EIA0603

EIA0805

5-22

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

5-23

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

5-24

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

5-25

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

5-26

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

5-27

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