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SERVICE MANUAL

DVD/CD & KARAOKE RECEIVER SERVICE MANUAL
MODELS : LH-T550,1,2,3TB [ Speakers: LHS-55TBC, LHS-55TBS, LHS-55TBW ] MODELS : LH-T750,1,2,3TB [ Speakers: LHS-75TBC, LHS-75TBS, LHS-75TBW ] MODELS : XH-TK550X [ Speakers: XHS-75TBC, XHS-75TBS, XHS-75TBW ] MODELS : XH-TK750X [ Speakers: XHS-75TBC, XHS-75TBS, XHS-75TBW ]

MODELS : LH-T550,1,2,3TB/XH-TK550X/LH-T750,1,2,3TB/XH-TK750X

P/NO : 3829RGP018A

APRIL, 2005 Printed in Korea

LH-T550,1,2,3TB/XH-TK550X

LH-T750,1,2,3TB/XH-TK750X

[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

1-1

SECTION 1. GENERAL
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.

Storage in conductive bag

Drop 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.

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

Pressure Magnet
Pressure

How to hold the pick-up Cotton swab

Conductive Sheet
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.

1-2

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 ) 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. Armband

Resistor (1 Mohm) Resistor (1 Mohm) Conductive Sheet

1-3

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 A RISK OF ELECTRIC SHOCK.

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

1-4

SPECIFICATIONS
GENERAL Power supply Power consumption Mass External dimensions (W x H x D) Operating conditions Temperature: Operating humidity CD/DVD Laser Signal system Frequency response (audio) Signal-to-noise ratio (audio) Dynamic range (audio) Harmonic distortion (audio) VIDEO Video input Video output S-video output Component Video output TUNER FM Tuning Range Intermediate Frequency Signal-to Noise Ratio Frequency Response AM [MW] Tuning Range Intermediate Frequency 87.5 - 108.0 MHz or 65.0 - 74.0 MHz, 87.5 - 108.0 MHz 10.7 MHz 60 dB (Mono) 140 - 10,000 Hz 522 - 1,620 kHz or 520 - 1,720 kHz 450 kHz 1.0 V (p-p), 75 , negative sync., RCA jack x 1/ SCART (TO TV) 1.0 V (p-p), 75 , negative sync., RCA jack x 1/ SCART (TO TV) (Y) 1.0 V (p-p), 75 , negative sync., Mini DIN 4-pin x 1 (C) 0.3 V (p-p), 75 (Y) 1.0 V (p-p), 75 , negative sync., RCA jack x 1 (Pb)/(Pr) 0.7 V (p-p), 75 , RCA jack x 1 Semiconductor laser, wavelength 650 nm PAL 625/50, NTSC 525/60 200 Hz to 20 kHz More than 75 dB (1 kHz, NOP, 20 kHz LPF/A-Filter) More than 70 dB 0.5 % (1 kHz, at 12W position) (20 kHz LPF/A-Filter) Refer to main label Refer to main label 3.9 kg 430 x 54 x 350 mm 5°C to 35°C, Operation status: Horizontal 5% to 85%

AMPLIFIER(LH-T550,1,2,3TB/XH-TK550X) Stereo mode Surround mode
(* Depending on the sound mode settings and the source, there may be no sound output.)

70W + 70W (8 at 1 kHz, THD 10 %) Front: 70W + 70W (THD 10 %) Centre*: 70W Surround*: 70W + 70W (8 at 1 kHz, THD 10 %) Subwoofer*: 150W (4 at 30 Hz, THD 10 %)

SPEAKERS Satellite Speaker (LHS-55TBS/XHS-55TBS) 1 Way 2 Speaker 8 150 - 20,000 Hz 86 dB/W (1m) 70 W 140 W 280 x 1200 x 280 mm 2.38kg Centre speaker (LHS-55TBC/XHS-55TBC) 1 Way 2 Speaker 8 150 - 20,000 Hz 86 dB/W (1m) 70 W 140 W 500 x 83 x 90 mm 0.71kg 1-5 Passive Subwoofer (LHS-55TBW/XHS-55TBW) 1 Way 1 Speaker 4 40 - 1,500 Hz 82 dB/W (1m) 150 W 300 W 195 x 402 x 360 mm 6.2kg

Type Impedance Frequency Response Sound Pressure Level Rated Input Power Max. Input Power Net Dimensions(WxHxD) Net Weight

AMPLIFIER(LH-T750,1,2,3TB/XH-TK750X) Stereo mode Surround mode
(* Depending on the sound mode settings and the source, there may be no sound output.)

100W + 100W (6 at 1 kHz, THD 10 %) Front: 100W + 100W (THD 10 %) Centre*: 100W Surround*: 100W + 100W (6 at 1 kHz, THD 10 %) Subwoofer*: 200W (4 at 30 Hz, THD 10 %)

SPEAKERS Satellite Speaker (LHS-75TBS/XHS-75TBS) 1 Way 3 Speaker 6 150 - 20,000 Hz 86 dB/W (1m) 100 W 200 W 280 x 1200 x 280 mm 2.5kg Centre speaker (LHS-75TBC/XHS-75TBC) 1 Way 3 Speaker 6 150 - 20,000 Hz 86 dB/W (1m) 100 W 200 W 500 x 83 x 90 mm 0.84kg Passive Subwoofer (LHS-75TBW/XHS-75TBW) 1 Way 1 Speaker 4 40 - 1,500 Hz 82 dB/W (1m) 200 W 400 W 240 x 450 x 390 mm 9.18kg

Type Impedance Frequency Response Sound Pressure Level Rated Input Power Max. Input Power Net Dimensions(WxHxD) Net Weight

1-6

SECTION 2. AUDIO PART
AUDIO TROUBLESHOOTING GUIDE
1. POWER SUPPLY CIRCUIT

2-1

2. FRONT CIRCUIT (1/2)

CN902

CN902

PIN3 PIN4 PIN9

: -32.4 VKK : -27.5 FL: -23.7 FL+ : +5.0

2-2

3. FRONT CIRCUIT (2/2)

2-3

WIRING DIAGRAM

WIRELESS OPTICAL IN SCART JACK OPTION SW AV1,2 COMPONENT MONITOR OUT S-VIDEO OUT TUNER PN105 PN302

SPEAKER TERMINAL

MAIN PCB
PDM01 PN801 23PIN CN350 11PIN 24PIN 23PIN PN902 14PIN PDM03 PN103 PN104

30PIN

AMP PCB

PN303 14PIN

5PIN

6PIN

MD

SMPS PCB

MIC JACK MIC JACK CN001 USB JACK

PN002

PN001 VFD

FRONT PCB

MIC&USB PCB
PN005

H/P JACK

2-4

2-5

BLOCK DIAGRAM

Optical Tuner

Tuner-L/R
(A)(T_CE,T_DO,T_DI,T_CLK,T_RDS_DATA,T_RDS,CLK)

SPDI F ADC CS 5340 Fs = 48kHz Fx AD-DATA AD-BCK AD-LRCK

12.288MHz

+ AV1
L R V

AV1-L/R AV2-L/R

Audio s/w Bu 4052

DIT CS 8406 (slave)

/RST-AD AV2
(option) Monitor Out L R V

CTL-A/B (B) AV1-CVBS AV2-CVBS Monitor out SCART-CVBS out C Y SCART-L/R

(A)

LRCK PS 9818 BCK (PWM) ADAT 0,1,2,3 (FL/R,RL/R,C/SW ) 8406_SDI,8406_SD O (A) 8406_CLK,8406_CE 8406_RST,8406_IN AUDIO MICOM T
LC876B48 (PIN MAP )

H/P
(A) HP_DET

S-AV
G Component B R L

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

SW1, SW2,MUTE1 (A) C

STA510A AMP IC

SPDIF

AM

PDN TH_W

Scart
(option)

R L R G B R 8 16 V

Slide S/W Pb(R) ,Pr(R) VIDEO-SW (A)

Y Y(G)

Video S/W NJM2279 (Y-S/W)

Y

Y

DVD BLOCK
CVB S MUTE TR Mute
FAN2

(ES 6698)
FAN1 OPTION

SCART-ID SCART-FB USB Controller
Mic Volume : OSD CTL (A)

USB Port MIC MIC1 MIC2 Wireless 7V ALC BA 3308
MIC1_DET(A) Mixing MIC2_DET(A)

CS 5340 ADC

ALRCK,ABCK MCLK,AMDAT (A)

SS T

FAN1_CTL FAN2_CTL

OPTION FRONT

/RST-AD

2-6

2-7

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

S

T

2-8

2-9

2. POWER SCHEMATIC DIAGRAM_2

A

B

C

D

E

F

G

H

I

J

K

L

M

N

O

P

Q

R

S

T

2-10

2-11

3. MICOM SCHEMATIC DIAGRAM

A

B

C

D

E

F

G

H

I

J

K

L

M

N

O

P

Q

R

S

T

2-12

2-13

4. FRONT SCHEMATIC DIAGRAM

A

B

C

D

E

F

G

H

I

J

K

L

M

N

O

P

Q

R

S

T

2-14

2-15

5. DSP& SCHEMATIC DIAGRAM

A

B

C

D

E

F

G

H

I

J

K

L

M

N

O

P

Q

R

S

T

2-16

2-17

6. I/O SCHEMATIC DIAGRAM

A

B

C

D

E

F

G

H

I

J

K

L

M

N

O

P

Q

R

S

T

2-18

2-19

7. MAIN MIC SCHEMATIC DIAGRAM

A

B

C

D

E

F

G

H

I

J

K

L

M

N

O

P

Q

R

S

T

2-20

2-21

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

2-22

2-23

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

2-24

2-25

3. FRONT P.C. BOARD

2-26

2-27

4. SMPS P.C. BOARD
( 5 TOOL )
LOCATION GUIDE

5. MIC P.C. BOARD
( TOP VIEW )

( 7 TOOL )
LOCATION GUIDE

( BOTTOM VIEW )

2-28

2-29

6. AMP P.C. BOARD
( 5 TOOL ) ( TOP VIEW ) ( 7 TOOL ) ( TOP VIEW )

( BOTTOM VIEW )

( BOTTOM VIEW )

2-30

2-31

SECTION 3. DVD & AMP PART
ELECTRICAL TROUBLESHOOTING GUIDE
1. System operation flow
Power On

1. 8082 initializes SERVO, DSP & RISC registers 2. Write RISC code to SDRAM 3. Reset RISC

Show LOGO

Yes

Tray Closed? No

Tray Close to Closed position

SLED at Inner Side? No

Yes

SLED Moves to Inner Position

1. Judge whether have disc and disc type 2. Jump to related disc reading procedure

Recieve OPEN/ CLOSE Key? 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

3-1

2. Test & debug flow

TEST

Check the AC Vol tage Power PCBA (110V or 220V) Yes

No

Check the POWER PART

Switch on the Power PCBA

Is the DC Voltage outputs OK? (-44V, -22V, -26.5V, ±12V, 5.6V, 3.3V, 5V, 7V, 8V) Yes

No

Check the POWER PART

Is 3.3V and 5V DC outputs normal on main PCBA? Yes

No Check the regulators or diode.

Update FLASH successfully? Yes

No

1. Check 27MHz system clock. 2. Check systemreset circuit. 3. Check FLASH R/Wenable signal PRD, RWR. 4. Check FLASH Memory related circuit.

Replace FLASH A

3-2

A

, 115.

3-3

B

3-4

C

ES6698.

ES6698.

ES6698.

3-5

D

3-6

E

PWM IC received correct data stream?

Check connection between IC300 ABCK, ALRCK, ASDAT

Normal PWM IC out?(IC301)

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

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

3-7

3. AUDIO µ-COM Circuit(DVD & AMP)

POWER ON

Does CD/DVD appear at FLD? YES Does Loading appear at FLD? YES Does no Dise or Time appear at FLD? YES Check if DVD an Audio Micom Insert is OK. YES

NO

Does CD/DVD appear at FLD? YES

NO OK

NO

Does it appear DVD Error at FLD? YES

NO

NO

Check power part of Main B/D. YES

NO Refer to SMPS.

NO Check oscillator of X101. YES NO Check if IC101 Pin80 is high. YES NO Check IC101 Reset Waveform. Refer to oscillator Circuit.

Check Power. YES

Check DVD Module.

Check SMPS.

Check if IC101 Pin32, 51, NO 80 are high(5V). YES Check if IC101 Pin96 is high. YES NO

Check 3.3V line.

Check Power section Circuit.

Replace IC101.

3-8

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.
Power Cord in

5.2VA

PWR_CTL(SYSTEM µ-COM) IC501 PIN83) M_RESET(IC501 PIN 207)

URST(IC501 PIN 188)

FIG 1-2

3-9

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

FRD(IC500 PIN 28)

FWR(IC500 PIN 11)

FIG 1-4

2. SDRAM CLOCK 1) ES6698FD main clock is at 27MHz(X501)
DCLK = 93MHz, Vp-p=2.2, Vmax=2.7V

(IC503 PIN 38)

FIG 2-1

3-10

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

3-11

3) Tray open waveform

OPEN(PDM03 PIN7)

CLOSE(PDM03 PIN8) TROPEN(IC402 PIN 4)

TRCLOSE(IC402 PIN 5)

FIG 3-3

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

3-12

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

3-13

7. DISC TYPE JUDGEMENT WAVEFORMS

F+(IC404 PIN 14)

FE(IC401 PIN 40)

RFL(IC401 PIN 19)

FIG 7-1 (DVD)

F+(IC404 PIN 14)

FE(IC401 PIN 40)

RFL(IC401 PIN 19)

FIG 7-2 (DVD)

3-14

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)

3-15

8. FOCUS ON WAVEFORMS

FE(IC401 PIN 40)

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

F-(IC404 PIN 13)

FIG 8-1 (DVD)

FE(IC401 PIN 40)

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

F-(IC404 PIN 13)

FIG 8-2 (CD)

3-16

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)

3-17

TE(IC401 PIN 39)

TRSO(IC501 PIN 13)

T-(IC404 PIN 16)

T+(IC404 PIN 15)

FIG 10-2(CD)

11. RF WAVEFORM

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

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

FIG 11-1

3-18

12. ES6698FD VIDEO OUTPUT WAVEFORMS 1) Full colorbar signal(COMPOSIT)

(IC501 PIN 110)

FIG 12-1

2) Y

(IC501 PIN 113)

FIG 12-2

3-19

13. AUDIO OUTPUT FROM PWM IC 1) Audio L/R

(IC301 PIN 68, 49)

FIG 13-1

2) Audio related Signal

ASDATA3

ASDAT0(IC501 PIN 117)

ABCK(IC501 PIN 123)

ALRCK(IC501 PIN 116)

FIG 13-2

3-20

14. DVD & AMP WAVEFORMS 1) 2)

· R310 TP301 or R311 TP302

· R320 TP311 or R321 TP312

3)

4)

· R312 TP303 or R313 TP304

· R318 TP307 or R319 TP308

5)

6)

· R314 TP305 or R315 TP304

· R318 TP309 or R319 TP310

3-21

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

S

T

3-22

3-23

2. RF & SERVO SCHEMATIC DIAGRAM

A

B

C

D

E

F

G

H

I

J

K

L

M

N

O

P

Q

R

S

T

3-24

3-25

3. FRONT MIC SCHEMATIC DIAGRAM

A

B

C

D

E

F

G

H

I

J

K

L

M

N

O

P

Q

R

S

T

3-26

3-27

4. USB CONTROLLER SCHEMATIC DIAGRAM

A

B

C

D

E

F

G

H

I

J

K

L

M

N

O

P

Q

R

S

T

3-28

3-29

5. AMP SCHEMATIC DIAGRAM ( 5TOOL )

A

B

C

D

E

F

G

H

I

J

K

L

M

N

O

P

Q

R

S

T

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

S

T

3-32

3-33

SECTION 4. EXPLODED VIEWS
· CABINET AND MAIN FRAME SECTION
OPTIONAL PART
463 463

463

A26
463 452 274 283 250 463 452

A53 A50

275 463

A46
463

A43
465

A45
279

A47
261 300

261

A44
261

4-1

4-2

· DECK MECHANISM EXPLODED VIEW

A26 439

018

001 002 003

A01

014 013

A02

020 017

012

435
015B

015
015A

019 440 012 016 032 432 030
012A

026

010 024 025 036 431 435

012A

A03

021 430

035A

035 439

4-3

4-4

· Packing Accessory Section
OPTIONAL PART

811 PLUG ASS'Y 1WAY(YELLOW) 827 MICRO PHONE

826 FILTER(CIRC)

824 ANTENNA LOOP(AM) 825 ANTENNA (FM)

808 BATTERY 801 INSTRUCTION ASSEMBLY 900 REMOCON 828 AC ADAPTOR

804 BAG 803 PACKING, CASING 803 PACKING, CASING

802 BOX

4-5

SECTION 5. SPEAKER SECTION
· CENTER SPEAKER
MODEL : LHS-55TBC, XHS-55TBC, LHS-75TBC, XHS-75TBC

A70

758 752 754 755

752 757 751

OPTIONAL PARTS LHS-75TBC/XHS-75TBC ONLY

753

752 750

751

5-1

· FRONT/REAR SPEAKER
MODEL : LHS-55TBS, XHS-55TBS, LHS-75TBS, XHS-75TBS
A80A A80
854 862 863

852

864

853 861 858

865

851

867

850

OPTIONAL PARTS LHS-75TBS XHS-75TBS ONLY
855 860 856 851 850 857 859 866

5-2

· SUB WOOFER SPEAKER
MODEL : LHS-55TBW/XHS-55TBW

A90
953

954

952

956 951

950

5-3

· SUB WOOFER SPEAKER
MODEL : LHS-75TBW/XHS-75TBW

955

A90
956

959

958

954 953 957 950 952

951

5-4