LG ACC-75-T, LHSW-75, LHSW-75-TAC, LHSW-75-TAF, LHW-750 Service manual

WIRELESS DVD RECEIVER SYSTEM
SERVICE MANUAL
MODEL : LH-W750,1,2,3TA
LHS-W75TAC, LHS-W75TAF, LHS-W75TAL, LHS-W75TAR, LHS-W75TAW , ACC75T
MODEL : LH-W750,1,2,3TA LHS-W75TAC, LHS-W75TAF, LHS-W75TAL, LHS-W75TAR, LHS-W75TAW, ACC75T
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 dont 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 ALLOTHER
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 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 , negative sync., RCA jack x 1/ SCART (TO TV) Video output 1.0 V (p-p), 75 , negative sync., RCA jack x 1/ SCART (TO TV) S-video output (Y) 1.0 V (p-p), 75 , negative sync., Mini DIN 4-pin x 1
(C) 0.3 V (p-p), 75
Component Video output (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
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 100W + 100W (6at 1 kHz, THD 10 %) Surround mode Front: 100W + 100W (THD 10 %)
Center*: 100W Surround*: 100W + 100W (6at 1 kHz, THD 10 %)
Subwoofer*: 200W (4at 30 Hz, THD 10 %) Input AV1, OPTICAL AUDIO, MIC Jack(Ø3.5mm) Output S-VIDEO, MONITOR, PHONRD : (32, 10.V)
TRANSMITTER Transmission Output : 2.4GHz, Power Supply : DC 7V
Reception Output : 2.4GHz
SPEAKERS
Front Speaker Centre speaker Subwoofer Wireless Speaker Type 1 Way 2 Speaker 1 Way 2 Speaker 1 Way 1 Speaker 1 Way 2 Speaker Impedance 6 6 Ω 4 Ω 6 Ω Frequency Response
150 - 20,000 Hz 150 - 20,000 Hz 40 - 1,500 Hz 150 - 20,000 Hz Sound Pressure Level
86 dB/W (1m) 86 dB/W (1m) 82 dB/W (1m) 86 dB/W (1m) Rated Input Power 100 W 100 W 200 W 100 W Max. Input Power 200 W 200 W 400 W 200 W Net Dimensions(WxHxD)
270 x 1190 x 270 mm 500 x 83 x 105 mm 300 x 440 x 410 mm 270 x 1190 x 270 mm Net Weight 2.9kg 1.2kg 8.5kg 2.9kg
(* 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
L R V
L R V
G B R
Tuner-L/R
AV1-L/R AV2-L/R
SCART-L/R
(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
(B)
+
Video S/W NJM 2279 out (CVBS-S/W)
ADC
CS 5340
Fs = 48kHz
DVD-CVBS
AD-DATA AD-BCK AD-LRCK
Fx
/RST-AD
(A)
SW1, SW2,MUTE1
(A)
SPDIF 12.288MHz
DIT
CS 8406
(slave)
ADAT 0,1,2,3 (FL/R,RL/R,
C/SW)
8406_SDI,8406_SDO 8406_CLK,8406_CE 8406_RST,8406_INT
(A)
C
SPDIF
LRCK BCK
AUDIO MICOM
LC876B48
(PIN MAP)
PS 9818
(PWM)
(A) HP_DET
STA510A
AMP IC
AM
H/P
PDN TH_W
Scart
(option)
USB Port
MIC
Wireless
L R L R G B R 8 16 V
MIC1 MIC2
7V
SCART-ID SCART-FB
ALC
BA 3308
MIC1_DET(A) MIC2_DET(A)
Slide
S/W
VIDEO-SW
Mixing
P
(R) ,Pr(R)
b
(A)
Y Y(G)
USB Controller
CS 5340
ADC
/RST-AD
Video
S/W
NJM2279
(Y-S/W)
ALRCK,ABCK MCLK,AMDAT
(A)
YY
DVD BLOCK
CVBS
(ES 6698)
MUTE
TR Mute
Mic Volume : OSD CTL
SS
T
OPTION
FRONT
(A)
FAN1
FAN2
FAN1_CTL FAN2_CTL
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 )
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. JACK 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
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
026
A26
013
017
439
014
435
015
A03
018
015B
015A
012
440
036
016
030
439
025
001
002
003
432
021
A01
431
435
035A
024
035
A02
020
430
010
012A
012A
NSP : Non SVC Parts
LOCA. NO. PART NO. DESCRIPTION SPECIFICATION REMARKS
A26 6721RJ0870E DECK ASSEMBLY,AUDIO HOME THEATER LH-TK750/550/250 A01 4861R-0016B CLAMP ASSEMBLY DISC DP7 - SH A02 3041R-T001A BASE ASSEMBLY MAIN DP-9T-ESS A03 3041R-T001B BASE ASSEMBLY SLED DP-9T-DI -ESS-SAMSUNG 001 3300R-0547A PLATE CLAMP NSP 002 5016H-1016B MAGNET CLAMP(LDM-R608,10*5,1*1.5T) NSP 003 4860R-0021A CLAMP UPPER DP7 NSP 010 6850R-JW14B CABLE,FLAT P=1.0 FFC UL2896(0.035X0.7) 23 012 5040R-0083A RUBBER DVD DP-6, DP-8 FRONT RIGHT 20 012A 5040R-0110A RUBBER DVD REAR DP8 RIGHT 20 OTHER BL 013 4400R-0006B BELT DECK/MECHA DP2-5, DP7C,DP7A OT 014 4470R-0154A GEAR DECK/MECHA DP8 PULLEY MOLD 015 4681R-A015A MOTOR ASSEMBLY DECK/MECHA LOADING DP-9 SH 015A 4680R-E008A MOTOR(MECH) FEEDING RF-300EA-1D390 MABUCHI NSP 015B 4560R-0008A PULLEY MOTOR 016 6871R-9294A PWB(PCB) ASSEMBLY,TOTAL DP-9C LOADING 017 4470R-0176A GEAR DVD DP-9 LOADING MOLD 018 4974R-0067A GUIDE DVD DP-9C UP/DOWN MOLD 019 3210R-M008A FRAME DP-9C UP/DOWN MOLD 020 3040R-M066A BASE MAIN DP-9T MOLD NSP 021 4681R-B009B MOTOR ASSEMBLY DECK/MECHA DP9 FEEDING 024 4470R-0179A GEAR DVD DP-9 PINION MOLD 025 4470R-0178A GEAR DVD DP-9 MIDDLE MOLD 026 3390R-0033A TRAY DVD DP-9T(9T-SLIM) DISK MOLD 030 4470R-0180A GEAR DVD DP-9 RACK MOLD 035 6871R-9295B PWB(PCB) ASSEMBLY,TOTAL DP-9T FEEDING 035A 6850R-GK22Y CABLE,FLAT P=1.0 FFC UL2896(0.05X0.65) 11 036 4370R-0136A SHAFT DVD PU, DR-02 SUS-420J2 OTHER 430 1SZZR-0064B SCREW,DRAWING + 1 D1.7 L7.0 SWCH18A/BZN DP8 431 1SZZR-0062A SCREW,DRAWING + 1 D1.7 L4.5 SWCH18A/NI DP8 P 432 1SZZR-0072A SCREW,DRAWING + 1 D1.7 L4.5 SWRCH18A/FZY DP8 435 1SZZR-0011A SCREW,DRAWING MACHINE 439 1SZZR-0075A SCREW,DRAWING + 1 D1.7 L10.0 SWRCH18A/FZW DP 440 1SZZH-1007B SCREW,DRAWING
+ D2.0 6MM SWRCH16A/ZNBK 4MM 1
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-75TAC
A700
754
754
758
757
750
751
755
756
755
755
751
754
5-2
FRONT SPEAKER
MODEL : LHS-75TAF
A800
850
852
851
858
853
857
859
854
855
856
850
882
883
881
885
886
884
893
A800A
887
888
889
890
891
892
894
5-4
REAR SPEAKER
MODEL : LHS-75TAL/R
A800WL A800WR
852
850
851
860
859
853
858
857
854
855
856
A801WL
A801WR
883
882
850
881A
A80SEN
A80SML
A80LAM
A80RAM
899
PWRCRD
884A
889
890
893
898
888A
894
887A
895
891
896
892
897
5-6
SUB WOOFER SPEAKER
MODEL : LHS-75ATW
A900
953
950
954
955
961
952
956
951
957
5-7
TRANSMITTER
MODEL : ACC75T
A300
380
(With LENS)
382
A80M
A80S
384
480
5-8
WIRElESS PART
1. SMPS SCHEMATIC DIAGRAM
GND
P-SENS
+3.3V
ST-BY
213
4
CN901
10K
R917
220UF/10V
C932
D903
C922
1SS133
3
1000UF/10V
IC922
21
KIA78R33
D922
F903
4
R922
SB140
ICP-N20
N20(0.8A)
470
T901
EER3534
VT-759TA
0.47/50
C920
2.2K R919
GND
+33V
1
2
CN902
W905
TIN_WIRE
1/50V
3.3K C910
R918
LHS-W75TA_SMPS
10K
15K R931
1000UF/50V
C933
N.C
L923
1
2
IC902
KIA7805
TIN_WIRE
3
C923
10/50V
C925 D902
1000UF/50V
D923
(10A/200V)
FFPF10U20S
L921
20uH
633-088D
C915
471/1KV
10
R915
R920
200
R945
1.2K
R944
18K
R943
470
R941
Q901
KRC102M
12K
R921
1/50V
C941
4.7K R942
Q902
KRC102M
IC941
KA431
10
R912
EG1MGF-R1
BEAD
FB901
LF902
Q903
KRC103M
1
DRAIN
GND
2
VT-759TA
R916
D901
C918
561/1KV(F)
3.3K/2W
1SS133
IC901
D912
EG1MGF-R1
1/50V
C926
3
FB VCC 4
FSCQ1265RT
SYNC
D913
EG1MGF-R1
C913
C924
ZD903
5
CM902
47uF/100V
47uF/50V
18V/1W
435D
0.1uF/275V
R925
10K_1W
D914
EG1MGF-R1
332(M)
C916
470
R924
N.C C914
W902
TIN_WIRE
C901
C902
N.C
ZD902
N.C
C912
331/400V
331/400V
ZD901
223(M)
43
PC910
LTV817
21
N.C
C917
F901
FH901
LF901
VT-759TA
CM901
R900
0.1uF(XCAP)
VR901
1.5M(1/2W)
FUSE_HOLD
SVC681D-10A
FH902
T3.15L_250V
FUSE_HOLD
PN903
P-CORD
W901
1
2
1
2
1 2
TIN_WIRE
AC100-240V/50,60Hz
PN904
N.C
56K/2W
R911
D911
103/630V
C911
270K
R926
D926
1N4004
TH901
BD901
5ohm
GBL-06
600V/4A
C934
C904
100uF/450V
331/400V
C903
331/400V
5-9
WIRElESS PART
2. TX SCHEMATIC DIAGRAM
0
0 11
11
111
76543
+3.3V
+3.3V
+3.3V
IC102
BLUE LED PORT
RED LED PORT
+5V
47/16
C103
1
2
GND
VOUT
VIN
XB1117P501FR
3
Q102
KTA1273
213
JK101
DC_JACK
SDATA0
MCLK
2.2K R151
22K
R150
220/10
C102
8.2V
ZD101
NAME
MODEL
XHS-W759TA
ID2ID1IDO
1
11
00
MODEL ID
1
00
00
0
11
0000
2
NO.
SCLK
4.7M R137
D104
1SS133
Q101
LRCK
KRC103S
1/50
C101
IC101
XC6203E332PR
RED LED PORT
BLUE LED PORT
MCLK
SDATA0
LRCK
SCLK
HB1M-102J
FB104
RESET
+3.3V
3
VOUT
VIN
GND
1
2
+3.3V
N.C
N.C
N.C
R121
R119
R120
HB1M-102J
FB105
FB103
HB1M-102J
1K
40 39 38 37 36 35 34 33 32 31 30 29 28 27
1K
R183
R182
2625242322
J06
J07
GPA1/AUD_LRCK
GPA0/AUD_SCLK
DGND
J00
J11
J10
J05
TDO
J01
TCK
J02
TMS
JTAG_RST
J03
J04
TDI
J21
RESET
J36
AGND
J15
VCC33
J20
AGND
J37
VCC33
J39
AGND
1K
470
R181
R184
212019181716151413
J08
J09
J24
J25
J26
J27
J28
GPB1/SPK_ID1
GPB0/SPK_ID0
GPB2/SPK_ID2
GPA2/AUD_DATA
GPA3/AUD_MCLK
GPB4/MODEL_ID1
GPB3/MODEL_ID0
GPA7/SPDIF_OUT
GPA6/SPDIF_IN
IC103
LG-VISION.WTR0501
HB1M-102J
FB106
10K R108
104
C132
1K
R109
104
C131
10K R125
10K
R126
10K R127
J31
J30
J29
GPB7/LED1
GPB6/LED0
GPB5/MODEL_ID2
CN101 : 10 PIN CONNECTOR
CN103 : 16 PIN CONNECTOR
CN102 : 14 PIN CONNECTOR
Note.
N.C
D105
12
J32
J33
J34
GPB9/CH_ID0
GPB10/PWR_SENS
GPB8/PWR_CTRL0
22K
R100
3.3V ZD102
10K R101
104
C133
11
J35
GPB11/CH_ID1
DGND
J19
10
SCL
J12
987
SDA
J13
USBDMINUS
J23
USBDPLUS
J22
6
J16
GPA8_REMOTE_CONTROLLER
543
J17
NO_CONNECT
DGND
J14
J18
EXT_UXTALIN
2
J38
EEPROM_ENB
1
SW101
TACT_S/W
10K
R116
TX_SCHEMATIC
ACC75T/ACC75TK
LRCK
SCLK SDATA0
BLUE LED PORT
RED LED PORT
Q104
KRC103S
FB102
HB1M-102J
R172
R170
R173
R171
R129
C112
R141
22K
104
18K
FB107
10/16
C119
104 C118
180
R106
HB1M-102J
3.3K
R180
Q105
KRA103S
Q103
2SC2412KR
103
150
R179
22K
R135
2.2P
22K
C116
R133
22K
R130
104
C113
1K1K
R148
18K
R142
101
C108
FB108
HB1M-102J
47
R138
1
BR
2
LD102
SAB5370
3
(DUAL LED)
C162
1
OUTPUT1
2
1-
3
1+
4
VCC
IC108
5
2+
6
2-
OUTPUT2
R147
101
C109
N.C
W103
N.C
W102
RESET
SWITCH
10/16 C104
104
C194
10K
10K
10K
1SS133
D101
10K
MCLK
10K
R158
19181716152019181716151413
20
FMT1
FMT0
MODE1
MODE2
IC110
PCM1803
1V
2V
R
L
IN
IN
REF
REF
V
V
1
2
4
3
HB1M-102J
FB101
1K
R139
OUTPUT4
14
4-
13
4+
12
150
R155
VEE
11
3+
10
TLC274
3-
9
OUTPUT3
87
2.2P
22K
C117
R134
22K
R131
22K
R132
104
104
C114
C115
!K
R145
18K
18K
R143
R144
101
C110
FB110
FB109
HB1M-102J
HB1M-102J
FB111
21354
JK102
FL+
FL-
FR-
FR+
GND
10K
R159
CC
10/16
4.7/16
OSR
V
104
104
104
103
R136
HB1M-102J
104
C168
DD
V
SCKI
AGND
PDWN
1K
R185
C170
C169
C165
C166
C120
C161
22K
1K
R146
101 C111
10/16
C167
1110
12
BCK
DOUT
DGND
FSYNC
LRCK
TEST
98765
104 C179
10/16 C164
DVD RECEIVER
SPEAKER OUTPUT
FROM
5-10
WIRElESS PART
3. RX SCHEMATIC DIAGRAM
2
3
L_CH SPK.
C239
104(M)
SPK+
CN208
104104
C243C244
5.6 R230
1
2
N.C.
N.C.
VSIG
VREG2
3635343332
104
C232
104
C231
SPK-
213
3-2P_3.96mm
104 104
C261 C260
5.6 R229
C240
104(M)
474(M)
C255
1
L201
15uH
4
20/3216
R228
331
C237
N.C
W202
W207
TIN_WIRE
N.C
W204
TIN_WIRE
C212
100/50
98765
10
OUT1B
GND2A
OUT2A
VCC2A
STA328
SDI_12
XTI
GNDA
VDDA
30
29282726252423
104
C254
0
R290
C280
22/16
FB201
BEAD
12.288MHz
RESET
3.3K
R271
CN201
P-SENS
11
VCC1B
PLL_FILTER
3.3K
R217
272
C222
272
C282
SWITCH
213
GND
TIN_WIRE
W203
224
C213
100/50
C236
12
N.C.
GND1A
GND1B
GND
SDA
SCL
221
C221
220
R275
BEAD
FB203
N.C
R210
N.C R209
1K
R208
TIN_WIRE
W206
TIN_WIRE
W205
3.3V
ZD201
2.2K
R202
BEAD
FB207
21
3
N.C
IC202
100/16
C201
104
C266
4
4P_2.5mm
+3.3V
ST-BY
W201
224
C235
4
3
N.C.
GND2B
OUT2B
VCC2B
IC203
BICLKI
LRCKI
GND3
VDD3
31
104 BEAD
FB211
C233
BCK
DATA0
LRCK
+3.3V
2
3
VCC1A
RESET 22
Q201
2SC2412KR
N.C
4
R201
CONFIG 212019 18
C202
R_CH SPK.
N.C
C241
N.C
R231
1716151413
OUT1A
GNDCLEAN
VREG1
VDD3
R276
BEADBEAD FB215FB213
R205
C203
3.3/50
W250
N.C
N.C
GNDSUB
0
N.C
R277
104
104
R206
10K
D201
SPK+
CN206
N.C
W208
C288
C225
SDA1 SCL1
BEAD FB218
RESET
N.C
1SS133
TIN_WIRE
SPK-
213
N.C
N.C N.C
C263 C262
N.C N.C
C246 C245
N.C
N.C
C242
R232
R233
N.C
C256
1
N.C
L202
4
N.C
C238
N.C
C290
1
2
4
3
N.C.
N.C.
N.C.
GND2A
GND2B
OUT2B
VCC2B
N.C
IC204
SDI_12
BICLKI
LRCKI
GND3
VSIG
VDD3
VREG2
31
30
3635343332
N.C
104
N.C
N.C
C234
C298
C297
FB212
N.C
C299
N.C
N.C
FB217
+3.3V
FB202
N.C
N.C
N.C
R298
R297
R299
470
R219
100
R214
100
R212
100
R213
P-SENS
+3.3V
N.C
N.C
C287
C289
98765
11
10
12
GND1B
OUT1B
VCC1B
OUT2A
VCC2A
XTI
GND
PLL_FILTER
GNDA
VDDA
29282726252423
N.C
R295
N.C
C296
N.C
C283
N.C
N.C
C295
R291
N.C
C281
N.C
FB204
N.C
FB216
N.C
FB214
N.C
R296
N.C
C294
GND1A
SDA
CN204
C286
SCL
+32.5V
GND
1
2
N.C
N.C.
VCC1A
CONFIG
RESET
212019 18
22
N.C
R294
12.288MHz
C214
OUT1A
R261
SDA2 SCL2
N.C
2P_3.96mm
1000/50
1716151413
GNDSUB
GNDCLEAN
VREG1
VDD3
R292
N.C
R260
N.C
N.C
N.C
N.C
P-SENS
ONLY RIGHT CHANNEL CHIP
N.C
+3.3V
C291
R293
C292
C293
+3.3V
FB206
ST-BY ST-BY
LHS-W75TA_RX
1:2_1CHANNEL_OUTPUT
Dual_LED
LD401
(LD501)
BR
1
2
3
(CN501)
LED PCB
213
3P_2mm_ANGLE
CN401
213
CN203
3P_2mm
RED_LED
10
BLUE_LED
R235
+3.3V
Q203
KRA103S
Q204
KRC103S
82
PIN_HEARDER
SW203
10K
10K
R249
R244
N.C
N.C
R278
R279
10K
R280
R282
N.C
R281
R234
N.C
Q205
10K
R283
2SC2412KR
3.3K
R250
+3.3V
SDA SCL
SDA2
SCL2
N.C
N.C
R252
R253
J07
GPA1/AUD_LRCK
DGND
JTAG_RST
RESET
AGND
VCC33
AGND
VCC33
AGND
J08
GPA2/AUD_DATA
GPA7/SPDIF_OUT
GPA6/SPDIF_IN
212019181716151413
J09
J24
J25
J26
J27
J28
GPB4/SDA2
GPB3/SCL2
GPB1/SPK_ID1
GPB0/SPK_ID0
GPB2/SPK_ID2
GPA3/AUD_MCLK
IC201
LG-VISION.WTR0501
2625242322
J06
GPA0/AUD_SCLK
J00
100
R258
BEAD
BEAD
FB221
BEAD
FB219
J11
J10
J05
TDO
J01
TCK
J02
TMS
J03
104
J04
C253
3.3V
ZD202
C200
TDI
10K
R257
J21
J36
J15
J20
J37
J39
40 39 38 37 36 35 34 33 32 31 30 29 28 27
104
C252
100/16
N.C
BEAD
BEAD
R200
FB226
FB225
470
R236
J31
J30
J29
J32
J33
GPB9/N.C
GPB5/N.C
GPB7/LED1
GPB6/LED0
GPB8/PWR_CTRL0
CN211 : 16 PIN CONNECTOR
CN210 : 14 PIN CONNECTOR
CN209 : 10 PIN CONNECTOR
Note.
P-SENS
104
104
104
11
12
J34
J35
GPB11/N.C
GPB10/PWR_SENS
J19
DGND
J12
SCL1
J13
SDA1
J23
USBDMINUS
J22
USBDPLUS
J16
GPA8/MONO PARALLEL MODE
J17
NO_CONNECT
J14
DGND
J18
EXT_UXTALIN
J38
EEPROM_ENB
C257
C249
C250
100
100
10
R237
R238
987
N.C
R264
6
543
2
1
10K
R207
1SS133
1SS133
D278
D277
5-11
WIRElESS PART
4. SMPS P.C. BOARD DIAGRAM
LOCATION GUIDE
5-12
WIRElESS PART
5. TX P.C. BOARD DIAGRAM
(TOP VIEW)
(BOTTOM VIEW)
5-13
WIRElESS PART
6. RX P.C. BOARD DIAGRAM
(TOP VIEW)
(BOTTOM VIEW)
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