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SERVICE MANUAL
DVD/CD RECEIVER SERVICE MANUAL
MODEL : HT303SD(SH32SD-S/SH32SD-W)
MODEL : HT303SD(SH32SD-S/SH32SD-W)
P/NO : AFN31640743 JANUARY, 2007
[CONTENTS]
SECTION 1. GENERAL
· SERVICING PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2 · ESD PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4 · SERVICE INFORMATION FOR EEPROM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5 · SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-7
SECTION 2. AUDIO PART
· AUDIO TROUBLESHOOTING GUIDE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1 · WIRING DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4 · BLOCK DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6 · CIRCUIT DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8 · PRINTED CIRCUIT DIARGAMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-22
SECTION 3. DVD & AMP PART
· ELECTRICAL TROUBLESHOOTING GUIDE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1 · DVD & AMP CIRCUIT DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-24
SECTION 4. EXPLODED VIEWS SECTION 5. SPEAKER PART
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 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 allow contact with 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 lens.
Pressure Magnet
Pressure
How to hold the pick-up Cotton swab
Conductive Sheet
6) Never attempt to disassemble the pick-up. Spring has 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 or 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
SERVICE INFORMATION FOR EEPROM (DVD PART)
POWER ON
DVD LOGO Status (NO Disk status)
DETECT NEW EEPROM (OPTION EDIT SCREEN) NAME HEX 48 55 23 FF 22 05 FC 31 4D 00 00 00 00 00 00 00
Remote control Pause key-->1-->4-->7-->2 in order.
Press number 0~9, Press charater A~F (1~6 for a while)
Use arrow key ( ) to move to appropriate position and make changes
OPT OPT OPT OPT OPT OPT OPT OPT OPT OPT OPT OPT OPT OPT OPT OPT
1 2 3 4 5 6 7 8 9 A B C D E F G
Press pause key once
Change will be applied when power OFF-->ON.
1-5
SERVICE INFORMATION FOR EEPROM (AMP PART)
POWER ON
FLD no disc status
Remote control `2' + Front `STOP' push same timing during 5s
DETECT NEW EEPROM (OPTION EDIT SCREEN) NAME OPT 1 OPT 2 OPT 3 OPT 4 OPT 5 HEX 86 C2 10 00 00
FLD `OP-0....
Use arrow key ( ) move to appropriate position and make changes
Press ENTER key once
FLD `write ok' or `up ok'
Remote control `2' + Front `STOP' push same timing
FLD display E2P CLR or EP CLR
Auto power off
1-6
SPECIFICATIONS
GENERAL Power supply Power consumption Net Weight External dimensions (W x H x D) Operating conditions Operating humidity CD/DVD Laser Signal system Frequency response (audio) Signal-to-noise ratio (audio) Dynamic range (audio) Harmonic distortion (audio) VIDEO Video output COMPONENT VIDEO OUT Refer to main label Refer to main label 2.4 kg 360 x 63 x 307 mm Temperature: 5°C to 35°C, Operation status: Horizontal 5% to 85%
Semiconductor laser, wavelength 650 nm PAL 625/50, NTSC 525/60 160 Hz to 18 kHz More than 75 dB (1 kHz, NOP -6 dB, 20 kHz LPF/A-Filter) More than 70 dB 0.5 % (1 kHz, at 1W position) (20 kHz LPF)
1.0 V (p-p), 75 , negative sync./ SCART (TO TV) (Y) 1.0 V (p-p), 75 ohms, negative sync, RCA jack x 1 (Pb)/(Pr) 0.7 V (p-p), 75 ohms, RCA jack x 1
TUNER FM Tuning Range Intermediate Frequency Signal-to Noise Ratio Frequency Response AM [MW] Tuning Range Intermediate Frequency AMPLIFIER Stereo mode Surround mode
(* Depending on the sound mode settings and the source, there may be no sound output.)
87.5 - 108.0 MHz or 65.0 - 74.0 MHz, 87.5 - 108.0 MHz 10.7 MHz 60 dB (Mono) 160 - 8,000 Hz 522 - 1,620 kHz or 520 - 1,720 kHz 450 kHz
Inputs SPEAKERS
45W + 45W (Rated Output Power 30W, 4at 1 kHz, THD 10 %) Front: 45W + 45W (Rated Output Power 30W, THD 10 %) Centre*: 45W Surround*: 45W + 45W (Rated Output Power 30W, 4at 1 kHz, THD 10 %) Subwoofer*: 75W (Rated Output Power 60W, 8at 30 Hz, THD 10 %) AUX IN, MIC
Front/Center/Rear Speaker Type Impedance Frequency Response Sound Pressure Level Rated Input Power Max. Input Power Net Dimensions (W x H x D) Net Weight (SH32SD-S) 1 Way1 Speaker 4 160 - 20,000 84 dB/W (1m) 45 W 90 W 98 x 101 x 105 mm 0.52kg
Passive Subwoofer (SH32SD-W) 1 Way1 Speaker 8 Hz 65 - 1,500 Hz 87 dB/W (1m) 75 W 150 W 181 x 351 x 278 mm 3.4kg
1-7
SECTION 2. AUDIO PART
AUDIO TROUBLESHOOTING GUIDE
1. Power Supply Circuit
Insert power cord. Yes
Does red power led turn on? Yes Turn power on.
No
Check power plug and power supply circuit.
No Is power on?
Check power supply circuit.
Yes
Does red power led turn on?
No
Check laser circuit.
Yes
Check focus circuit.
Check disc.
No Does it play?
Check tracking servo circuit.
Yes
Does it output audio? Yes OK
No
Check audio circuit.
2-1
2. Front circuit (1/2)
Power on.
No Red LED turn off?
Check if PN1301 is ok? Yes
No
Reconnect it.(Refer to notice *1)
Yes
Is the Digitron on correctly? Yes
No
Check if the front power is ok?(*2)
No
Refer to SMPS part.
Yes
Check if all buttons are ok? Yes
NO
1
Check if the remote control is ok? Yes Front B/D ok.
No
2
Check if RM301 is ok?
Check pattern and resoldering
2-2
3. Front circuit (2/2)
1
Check if the power part of the front is ok? Yes
No
Refer to power(SMPS).
Check if R345~R350 ok? Yes
No
Refer to MICOM circuit.
Replace R345 ~ R350.
2
Check if the power part of the front is ok?
No
Refer to power(SMPS).
Yes
Check if the remote control waveform of PN3101 pin11 is ok? No
Yes
Refer to MICOM circuit.
Check if RM301 voltage is ok(5V)?
No
Yes
Resolder or Replace RM301.
Check RM circuit
2-3
WIRING DIAGRAM
061026
2-4
2-5
BLOCK DIAGRAM
061026
2-6
2-7
CIRCUIT DIAGRAMS
1. SMPS(POWER) CIRCUIT DIAGRAM
IMPORTANT SAFETY NOTICE WHEN SERVICING THIS CHASSIS, UNDER NO CIRCUMSTANCES SHOULD THE ORIGINAL DESIGN BE MODIFIED OR ALTERED WITHOUT PERMISSION FROM THE LG CORPORA TION. ALL COMPONENTS SHOULD BE REPLACED ONLY WITH TYPES IDENTICAL TO THOSE IN THE ORIGINAL CIR- CUIT. NOTE : SPECIAL COMPONENTS ARE SHADED ON THE 1. Shaded( ) parts are critical for safety. Replace only SCHEMATIC FOR EASY IDENTIFICATION. with specified part number. THIS CIRCUIT DIAGRAM MAY OCCASIONALLY DIFFER FROM THE ACTUAL CIRCUIT USED. THIS WAY, 2. Voltages are DC-measured with a digital voltmeter IMPLEMENTATION OF THE LATEST SAFETY AND during Play mode. PERFORMANCE IMPROVEMENT CHANGES INTO THE SET IS NOT DELAYED UNTIL THE NEW SERVICE LITERATURE IS PRINTED.
NOTE) NOTE) NOTE) NOTE) NOTES) NOTES)
Warning Parts that are shaded are critical With respect to risk of fire or electricial shock. Symbol denotes AC ground. Symbol denotes DC chassis ground.
061026
2-8
2-9
2. µ-COM(MAIN) CIRCUIT DIAGRAM
061026
2-10
2-11
3. MOTOR & SERVO CIRCUIT DIAGRAM
061026
2-12
2-13
4. I/O CIRCUIT DIAGRAM
061026
2-14
2-15
5. MIC CIRCUIT DIAGRAM
061026
2-16
2-17
6. FRONT JACK CIRCUIT DIAGRAM
061026
2-18
2-19
7. FRONT CIRCUIT DIAGRAM(WITH RDS)
061026
2-20
2-21
8. FRONT CIRCUIT DIAGRAM(WITHOUT RDS)
061026
2-22
2-23
PRINTED CIRCUIT BOARD DIAGRAMS
1. MAIN P.C. BOARD DIAGRAM ( TOP VIEW )
2-24
2-25
2. MAIN P.C. BOARD DIAGRAM ( BOTTOM VIEW )
2-26
2-27
3. SMPS P.C. BOARD
NOTE: Warning Parts that are shaded are critical with respect to risk of fire or electrical shock.
2-28
2-29
4. FRONT JACK P.C BOARD
5. FRONT P.C. BOARD(WITH RDS)
6. FRONT P.C. BOARD(WITHOUT RDS)
2-30
2-31
SECTION 3. DVD & AMP PART
ELECTRICAL TROUBLESHOOTING GUIDE
1. System operation flow
POWER ON.
1. 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 SLED moves to inner position.
Yes
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. System operation routine 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 voltage Power PCBA (110V or 220V). Yes Switch on the Power PCBA.
No
Check the POWER PART.
Are the DC Voltage outputs OK? (12V, 5.6V, 3.5V, 5V,7V, 34V). Yes
No
Check the POWER PART.
Are 3.5V and 5V DC outputs normal on main PCBA? Yes Update FLASH successfully?
No
Check the regulators or diode.
No
1. Check 2. Check 3. Check 4. Check
27MHz system clock. system reset circuit. FLASH R/W enable signal PRD, RWR. FLASH Memory related circuit.
Yes Replace FLASH. A
3-2
A
Power On.
Show LOGO?
Flash Memory operates properly?
Check connection lines between FLASH & ES8380 and the FLASH access time whether is suitable or not.
SDRAM works properly?
Check connection lines between SDRAM(IC502) & ES8380 and the SDRAM is damaged.
ES8380 VIDEO outputs properly?
Check the related circuit of ES8380 IC501 Pins133, 134, 137, 138, 139, 140.
Check AV cable connection to TV set.
Does Tray move inside when it is not at closed position?
Normal OPEN_SW, CLOSE_SW signal?
Check the load OPEN & CLOSE switch.
Normal IN_SW & OUT_SW signal?
Check the Tray control IO pins on ES8380.
Normal LOAD+ & LOADsignal?
Check the Tray control MOTOR & SERVO circuit IC401.
B
Check AV cable connection between main PCBA and loader. (MECHA)
3-3
B
Does the SLED move to inner side when it is at outer position?
No
Motor Driver DRV_MUTE pin is high? Yes
No
Check the connection line of DRV_MUTE.
Yes Motor Driver DRV_MUTE pin is High? Yes SLED+ and SLED- output properly? Yes Do not put in disc and close tray. Check the cable connection with MECHA. No Check the related circuit of SLEGN.
No
Check the amp circuit on motor driver.
Optical Lens has movements for searching Focus?
Proper Focus outputs to motor dricer? Yes
No
Check Focus connection on ES8381 and motor driver.
Yes Proper F+ & F- outputs? No Check the amp circuit on motor driver.
Yes C Check cable connection with pick-up head.
3-4
C
Laser turns on when reading disc?
No
DVDLD or CDLD output property? Yes Collector voltage of power transistor is OK? (Q405, Q406) Yes Check cable connection between transistor output and pick-up head.
No
Check the laser power circuit on ES8380 and connecting to power transistor.(Q405, Q406).
Yes
No
Check the related circuit on laser power transistor.
Put disc in?
No
Laser off.
Yes
Disc ID is correct?
No
Proper RF signal on ES8380.
No
Check the related circuit on ES8380 RF signal.
Yes Yes Check the RF connection between IP9009 and ES8380.
Does spindle rotate?
No
Proper SPINDLE signal on ES8380. Yes
No
Check the SPINDLE related circuit on ES8380.
Yes SPNP SPNN output properly? Yes D Check the cable connection between spindle and main PCB. No Check the spindle control amp circuit of motor driver.
3-5
D
Focus on ok?
No
Proper signals on A, B, C, D of ES8380. Yes
No
Check connections between ES8380 and pick-up head.
Yes Proper CD-DVDCT signal on ES8380. Yes Check CD_DVDCT connection between IP9009 and ES8380. No Check the related circuit on ES8380 CD-DVDCT.
Track On OK?
Proper CD-DVDCT signal on ES8380. Yes
No
Check the related circuit on ES8380.
Yes
Proper TRACK signal on ES8380. Yes TR+ & TRoutput properly?
No
Check the TRACK connection on ES8380 and motor driver.
No
Check the tracking control amp circuit on motor driver.
Yes Check cable connection on pick-up head.
Disc Playback?
No
Check RF signal waveform.
Yes
E
3-6
E
Normal Audio output when disc playback?
PWM IC received correct data stream?
Check connection between IC701 BCK, LRCK, ADATAO.
Normal PWM IC out?(IC701).
Check the related circuit of PWM.(Check Audio out Pins 54, 55, 58, 59, 61, 62, 67, 68, 70, 71, 74, 75.
Check Digital Amp circuit (IC702, IC703).
TEST END.
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 Disc or Time appear at FLD? YES Check if DVD an audio micom insert is OK. YES
NO
Does AUX, SCART, OPT and FM 87.5 appear at FLD. NO
YES 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 Pin41 is high. YES NO Check IC101 reset waveform. Refer to oscillator circuit.
Check Power. YES
Check DVD Module.
Check SMPS.
Check if IC101 Pin15, 16, 47 are high(5V). YES Check if IC101 Pin1 is high. YES
NO Check 3.3V line.
NO
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) ES8380 main clock is at 27MHz(X501)
3.8V, 27MHz
FIG 1-1
2) ES8380 reset is high active.
Power Cord in
5.2VA
PWR_CTL(SYSTEM µ-COM) (IC101 PIN2) DVD_RESET(IC101 PIN 41)
MRST#(IC501 PIN 203)
FIG 1-2
3-9
3) Flash R/W enable signal during download(Downloading)
FRD(IC503 PIN 28)
FWR(IC503 PIN 11)
FIG 1-4
2. SDRAM CLOCK 1) ES8380 main clock is at 27MHz(X501)
DCLK = 93MHz, Vp-p=2.2, Vmax=2.7V
(IC502 PIN 38)
FIG 2-1
3-10
3. TRAY OPEN/CLOSE SIGNAL 1) Tray open/close waveform
OPENSW(P401 PIN3)
CLOSESW(P401 PIN4) OPEN(IC401 PIN 1)
CLOSE(IC401 PIN 2)
FIG 3-1
2) Tray close waveform
OPENSW(P401 PIN3) CLOSESW(P401 PIN4)
OPEN(IC401 PIN 1)
CLOSE(IC401 PIN 2)
FIG 3-2
3-11
3) Tray open waveform
OPENSW(P401 PIN3)
CLOSESW(P401 PIN4) OPEN(IC401 PIN 1)
CLOSE(IC401 PIN 2)
FIG 3-3
4. SLED CONTROL RELATED SIGNAL (NO DISC CONDITION)
SLO(2.0V/1.4V/1.0V) (IC501 PIN 173) DRV_MUTE(5V) (IC401 PIN 21)
SLED+(4.7V/3.6V/1.9V) (IC401 PIN 17)
SLED-(5.3V/3.7V/2.5V) (IC401 PIN 18)
FIG 4-1
3-12
5. LENS CONTROL RELATED SIGNAL(NO DISC CONDITION)
FOO(1.5V/1.4V/1.3V) (IC501 PIN 172)
F+(4.0V/3.6V/3.2V) (IC401 PIN 13)
F-(4.0V/3.6V/3.2V) (IC401 PIN 14)
FIG 5-1
6. LASER POWER CONTROL RELATED SIGNAL(NO DISC CONDITION)
DVD MDI(0V/180mV) (IC501 PIN 152) DVDLDO501(5.0V//3.5V) (IC501 PIN 149)
CDLDO(5.0V/3.6V) (IC501 PIN 150)
FIG 6-1
3-13
7. DISC TYPE JUDGEMENT WAVEFORMS
F+(IC401 PIN 13)
CD_DVDCT(IC501 PIN 133)
RF(IC501 PIN 160)
FIG 7-1 (DVD)
F+(IC401 PIN 13)
CD_DVDCT(IC501 PIN 133)
RF(IC501 PIN 160)
FIG 7-2 (DVD)
3-14
F+(IC401 PIN 13)
CD_DVDCT(IC501 PIN 133)
RF(IC501 PIN 160)
FIG 7-3 (CD)
F+(IC401 PIN 13)
CD_DVDCT(IC501 PIN 133)
RF(IC501 PIN 160)
FIG 7-4 (CD)
3-15
8. FOCUS ON WAVEFORMS
CD_DVDCT(IC501 PIN 133)
FOO(IC501 PIN172) F+(IC401 PIN 13)
F-(IC401 PIN 14)
FIG 8-1 (DVD)
CD_DVDCT(IC501 PIN 133)
FOO(IC501 PIN172) F+(IC401 PIN 13)
F-(IC401 PIN 14)
FIG 8-2 (CD)
3-16
9. SPINDLE CONTROL WAVEFORMS (NO DISC CONDITION)
SPINO(1.4V/1.8V) (IC501 PIN 171) SP-(3.6V/2.4V) (IC501 PIN 156)
SP+(3.6V/4.8V) (IC501 PIN 155)
FIG 9-1
10. TRACKING CONTROL RELATED SIGNAL(System checking)
CD_DVDCT(IC501 PIN 133)
TRO(IC501 PIN 174)
TR-(IC401 PIN 12)
TR+(IC401 PIN 11)
FIG 10-1(DVD)
3-17
CD_DVDCT(IC501 PIN 133)
TRO(IC501 PIN 174)
TR-(IC401 PIN 12)
TR+(IC401 PIN 11)
FIG 10-2(CD)
11. ES8380 VIDEO OUTPUT WAVEFORMS 1) Full colorbar signal(COMPOSIT)
(IC501 PIN 110)
FIG 11-1
3-18
2) Y
(IC501 PIN 113)
FIG 11-2
12. AUDIO OUTPUT FROM PWM IC 1) Audio L/R
(IC701 PIN 1, 7)
FIG 12-1
3-19
2) Audio related Signal
ASDATA3
ADATA0(IC501 PIN 118)
BCK(IC501 PIN 124)
LRCK(IC501 PIN 117)
FIG 12-2
3-20
13. DVD & AMP WAVEFORMS 1) 2)
· R620 TP611 or R621 TP612
· R618 TP609 or R619 TP610
3)
4)
· R612 TP603 or R613 TP604
· R610 TP601 or R611 TP602
5)
6)
· R614 TP605 or R615 TP606
· R616 TP607 or R617 TP608
3-21
DVD & AMP CIRCUIT DIAGRAM
1. MPEG CIRCUIT DIAGRAM
061026
3-23
3-24
2. DSP & AMP CIRCUIT DIAGRAM
061026
3-25
3-26
SECTION 4. EXPLODED VIEWS
462
· CABINET AND MAIN FRAME SECTION
463 A26 275
A B
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.
465
D
A50 A43 273
283 463
A B
D
463 250
P3502
273
C
MA
IN
C
280
CABLE1 463 465
SM PS
A46 473
279
A47
300
A44
261 260
Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes
4-1
4-2
LGE Internal Use Only
· DECK MECHANISM EXPLODED VIEW(DP-10T)
A26 439 018
001 002 003
A01
014 013
A02
020 017
012
435
015B
015
015A
019 016 440 432 012 030 010
012A
026
439 024 025 036 431 435
012A
A03
021
430
4-3
4-4
· PACKING ACCESSORY SECTION
824 ANTENNA LOOP(AM)
808 BATTERY
825 ANTENNA (FM)
900 REMOCON
801 INSTRUCTION ASSEMBLY
804 BAG 803 PACKING, CASING 803 PACKING, CASING
802 BOX
4-5
SECTION 5. SPEAKER SECTION
· FRONT/CENTER/REAR SPEAKER (SH32SD-S)
A80FR F.R CASE Assembly A80FL F.L CASE Assembly A80 A81 A82 A83 A84 F.R SPK F.L SPK CENTER SPK R.R SPK R.L SPK WIRE80 F.R SPK WIRE81 F.L SPK WIRE82 CENTER SPK WIRE83 R.R SPK WIRE84 R.L SPK A80C CENTER Assembly 852 A80SR R.R Assembly A80SL R.L Assembly
850 853
851
5-1
4. LHS-96SB
· PASSIVE SUBWOOFER SPEAKER (SH32SD-W)
A90
951
WIRE90
953
952 950
954
5-2